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  • Life and Medical Sciences  (3,916)
  • Analytical Chemistry and Spectroscopy  (2,202)
  • Geophysics  (1,900)
  • Deutschland
  • Fisheries
  • 2005-2009  (761)
  • 1995-1999  (7,357)
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Year
  • 1
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    Developments in Petrophysics (1997)
    London : The Geological Society
    Details
    Keywords: Petrophysik ; Geophysics ; Petroleum - Geology ; Petroleum engineering ; Rocks
    Description / Table of Contents: P. D. Jackson, D. G. Gunn, R. C. Flint, D. Beamish, P. I. Meldrum, M. A. Lovell, P. K. Harvey, and A. Peyton: A non-contacting resistivity imaging method for characterizing whole round core while in its liner / Geological Society, London, Special Publications, 122:1-10, doi:10.1144/GSL.SP.1997.122.01.01 --- D. J. Prosser, A. Hurst, and M. R. Wilson: One-man-operable probe permeameters / Geological Society, London, Special Publications, 122:11-18, doi:10.1144/GSL.SP.1997.122.01.02 --- S. R. McDougall, A. B. Dixit, and K. S. Sorbie: Network analogues of wettability at the pore scale / Geological Society, London, Special Publications, 122:19-35, doi:10.1144/GSL.SP.1997.122.01.03 --- S. Pugliese and N. Petford: Pore-structure visualization in microdioritic enclaves / Geological Society, London, Special Publications, 122:37-46, doi:10.1144/GSL.SP.1997.122.01.04 --- Paul B. Basan, Ben D. Lowden, Peter R. Whattler, and John J. Attard: Pore-size data in petrophysics: a perspective on the measurement of pore geometry / Geological Society, London, Special Publications, 122:47-67, doi:10.1144/GSL.SP.1997.122.01.05 --- M. S. King, A. Shakeel, and N. A. Chaudhry: Acoustic wave propagation and permeability in sandstones with systems of aligned cracks / Geological Society, London, Special Publications, 122:69-85, doi:10.1144/GSL.SP.1997.122.01.06 --- Shiyu Xu, Just Doorenbos, Sue Raikes, and Roy White: A simple but powerful model for simulating elastic wave velocities in clastic Silicate rocks / Geological Society, London, Special Publications, 122:87-105, doi:10.1144/GSL.SP.1997.122.01.07 --- T. Apuani, M. S. King, C. Butenuth, and M. H. De Freitas: Measurements of the relationship between Sonic wave velocities and tensile strength in Anisotropic rock / Geological Society, London, Special Publications, 122:107-119, doi:10.1144/GSL.SP.1997.122.01.08 --- C. McCann, J. Sothcott, and S. B. Assefa: Prediction of petrophysical properties from seismic quality factor measurements / Geological Society, London, Special Publications, 122:121-130, doi:10.1144/GSL.SP.1997.122.01.09 --- Y. F. Sun and D. Goldberg: Estimation of aspect-ratio changes with pressure from seismic velocities / Geological Society, London, Special Publications, 122:131-139, doi:10.1144/GSL.SP.1997.122.01.10 --- P. K. Harvey, M. A. Lovell, J. C. Lofts, P. A. Pezard, and J. F. Bristow: Petrophysical estimation from downhole Mineralogy logs / Geological Society, London, Special Publications, 122:141-157, doi:10.1144/GSL.SP.1997.122.01.11 --- Paul F. Worthington: Petrophysical estimation of permeability as a function of scale / Geological Society, London, Special Publications, 122:159-168, doi:10.1144/GSL.SP.1997.122.01.12 --- C. A. Gonçalves, P. K. Harvey, and M. A. Lovell: Prediction of petrophysical parameter logs using a multilayer backpropagation neural network / Geological Society, London, Special Publications, 122:169-180, doi:10.1144/GSL.SP.1997.122.01.13 --- Brian P. Moss: The partitioning of petrophysical data: a review / Geological Society, London, Special Publications, 122:181-252, doi:10.1144/GSL.SP.1997.122.01.14 --- A. Revil, P. A. Pezard, and M. Darot: Electrical conductivity, spontaneous potential and ionic diffusion in porous media / Geological Society, London, Special Publications, 122:253-275, doi:10.1144/GSL.SP.1997.122.01.15 --- Brígida Ramati P. Da Rocha and Tarek M. Habashy: Fractal Geometry, porosity and complex resistivity: from rough pore interfaces to hand specimens / Geological Society, London, Special Publications, 122:277-286, doi:10.1144/GSL.SP.1997.122.01.16 --- Brígida Ramati P. Da Rocha and Tarek M. Habashy: Fractal Geometry, porosity and complex resistivity: from hand specimen to field data / Geological Society, London, Special Publications, 122:287-297, doi:10.1144/GSL.SP.1997.122.01.17 --- M. Ben Clennell: Tortuosity: a guide through the maze / Geological Society, London, Special Publications, 122:299-344, doi:10.1144/GSL.SP.1997.122.01.18 --- J. C. Lofts, J. Bedford, H. Boulton, J. A. van Doorn, and P. Jeffreys: Feature recognition and the interpretation of images acquired from horizontal wellbores / Geological Society, London, Special Publications, 122:345-365, doi:10.1144/GSL.SP.1997.122.01.19 --- D. Goldberg and Y. F. Sun: Scattering attenuation as a function of depth in the Upper Oceanic Crust / Geological Society, London, Special Publications, 122:367-375, doi:10.1144/GSL.SP.1997.122.01.20 --- N. Passas, C. Butenuth, and M. H. De Freitas: An application of the Moiré Method to a study of local strains during rock failure in tension / Geological Society, London, Special Publications, 122:377-388, doi:10.1144/GSL.SP.1997.122.01.21
    Pages: Online-Ressource (VII, 393 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1897799810
    URL: http://sp.lyellcollection.org/content/122/1
    Language: English
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  • 2
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    GEOSTAR: a GEophysical and Oceanographic STation for Abyssal Research (2008)
    Elsevier
    Details
    Publication Date: 2017-04-04
    Description: The GEOSTAR is a technological and scientific project aimed at the realisation of an autonomous benthic observatory able to perform long-term, continuous and integrated geophysical and environmental measurements in deep seafloors. The observatory is conceived to be a node of existing and future geophysical monitoring networks, making possible their extension offshore. The GEOSTAR observatory prototype hosts sensors for seismic, geomagnetic, gravimetric, geochemical and oceanographic researches up to abyssal depths (4000 m). The first 1-year scientific mission is foreseen within the end of the millennium in the abyssal plain (3400 m) of the Southern Tyrrhenian Sea, where key information about the geodynamics and oceanography of the whole Mediterranean basin can be acquired.
    Description: Published
    Description: 175-183
    Description: JCR Journal
    Description: reserved
    Keywords: Seafloor observatories ; Geophysics ; Water geochemistry ; Physical oceanography ; 03. Hydrosphere::03.01. General::03.01.08. Instruments and techniques ; 03. Hydrosphere::03.02. Hydrology::03.02.04. Measurements and monitoring ; 03. Hydrosphere::03.02. Hydrology::03.02.07. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
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    Interactive Exhibits for Geophysical Education: Uncovering the Secrets of the Earth (2008)
    WSEAS
    Details
    Publication Date: 2017-04-04
    Description: The Educational & Outreach Group of the Istituto Nazionale di Geofisica e Vulcanologia (INGV, Rome, Italy) designed a portable museum to bring on the road educational activities focused on the understanding of geomagnetism, plate tectonics, seismology and seismic hazard. Here the main experiments, models and exhibits which have been successfully installed in Genoa for the Science Festival (2003, 2004) and in Rome (2005) with enthusiastic audience participation are shown.
    Description: Published
    Description: 375-381
    Description: 5.8. TTC - Formazione e informazione
    Description: N/A or not JCR
    Description: open
    Keywords: Geophysics ; education ; geomagnetism ; plate tectonics ; seismology ; portable museum ; 05. General::05.03. Educational, History of Science, Public Issues::05.03.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
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    Earth-prints Open Archive (2005)
    Details
    Publication Date: 2017-04-03
    Description: Geophysics Open archive. Free access to worldwide scientists during search and submission process. Earth-Prints is an open archive created and maintained by Istituto Nazionale di Geofisica e Vulcanologia with the collaboration of Programma Nazionale Ricerche in Antartide. It is maintained by CILEA .
    Description: Unpublished
    Description: Rome, Italy
    Description: open
    Keywords: Open Access ; Geophysics ; 05. General::05.03. Educational, History of Science, Public Issues::05.03.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Oral presentation
    Format: 4779008 bytes
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  • 5
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    Geosystemics (2009)
    WSEAS Press
    Details
    Publication Date: 2017-04-04
    Description: For Geosystemics we define the science that studies the Earth system from a holistic point of view. Earth is thus considered as a whole and unique far-from-the equilibrium complex system, formed by numerous different parts (sub-systems), which do not act independently but interact each other continuously. Most interactions are nonlinear, so that we can usually say that “resultant is more than the sum of the parts”. Interactions are not only in terms of contrasts but, and mostly, cooperative and mutual organizations. We will see some aspects and properties of this approach with a few examples.
    Description: Published
    Description: Cambridge, UK, February 24-26, 2009
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: open
    Keywords: Geosystemics ; Earth system ; Nonlinear Analysis ; Entropy ; Geophysics ; 03. Hydrosphere::03.03. Physical::03.03.01. Air/water/earth interactions ; 05. General::05.05. Mathematical geophysics::05.05.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 6
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    A multidisciplinary approach to the evaluation of the mechanism that triggered the Cerda landslide (Sicily, Italy) (2005)
    Elsevier
    Details
    Publication Date: 2020-03-02
    Description: The present paper describes a multidisciplinary approach to the evaluation of a seismically triggered landslide that occurred in the Cerda area (Italy) on September 6, 2002, about 1 h after an earthquake took place in the south Tyrrhenian Sea. The study was focused on an analysis of the role of the seismic input in triggering the landslide, in view of the evidence that no other mass movement was recorded in the adjacent areas despite geological and geomorphological spatial homogeneity. The studied area is located on a slope of the western flank of the Fiume Imera Settentrionale (Northern Sicily), which is made up of clayey–arenitic rocks. The slope inclines gently but is not uniform due to fluvial, gravitative, and rainwash processes. Field data dealing with global positioning system (GPS), geology, geomorphology, geophysics (vertical electrical sounding, or VES), and geochemistry (soil gas fluxes and composition) were acquired and analysed in order to investigate the cause–effect relationships between the earthquake and the mass movement. The GPS survey allowed us to map the ground failures that have also been classified on the basis of their kinematical meaning (i.e., compressive, distensive, or transcurrent structures). The geological analysis revealed outcropping rocks and tectonic structures. The geomorphologic survey highlighted the presence of preexisting landslide bodies. The geophysical survey detected a buried surface located at a depth of about 100 m . Finally, the geochemical survey showed that the gas released from the displaced mass came from a shallow depth and was not related to any active fault system. The abovementioned information allowed us to interpret the landslide event as a partial reactivation of a preexisting landslide body that was triggered by the earthquake.
    Description: Ministero dell’Istruzione, dell’Universita` e della Ricerca (MIUR), Cofinanziamento Progetti di Ricerca di Rilevante Interesse Nazionale (COFIN PRIN) 2002 Project "Valutazione dell’Erosione del Suolo in Ambiente Mediterraneo"
    Description: Published
    Description: 101–116
    Description: partially_open
    Keywords: Landslide ; Earthquake ; Geochemistry ; Geophysics ; GPS ; Triggering mechanism ; 04. Solid Earth::04.04. Geology::04.04.03. Geomorphology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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    Format: 539 bytes
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  • 7
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    La pêche maritime sénégalaise (2007)
    Details
    Publication Date: 2021-01-30
    Description: Ministère de l'économie et des Finances
    Description: Published
    Description: Pêche artisanale, pêche industrielle,pêche maritime,pêche sardinière, produits halieutiques,Transformation,
    Keywords: Fisheries ; Fishery products ; Marine fish ; Fisheries ; Artisanal fishing ; Fishery products
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 8
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    Manuel de Cogestion des pecheries : théories et études de cas au Japon, auxPhilippines et au Sénégal (2007)
    Details
    Publication Date: 2021-01-30
    Description: pêcherie; gestion des ressources; cymbium; poulpe; crevette
    Keywords: Fisheries ; Fishery management ; Biodiversity ; Fishery resources ; Biodiversity ; Fisheries ; Fishery management ; Fishery resources ; Bait fishing
    Repository Name: AquaDocs
    Type: Working Paper
    Format: 2371081 bytes
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    Format: 27
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  • 9
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    Stratégies de communication globale du programme Girmac (2008)
    Programme Gestion Intégrée des Ressources Marines et Côtières, Dakar (Senegal)
    Details
    Publication Date: 2021-05-19
    Description: Fondée sur l'intégration des principes et démarqhes des sciences de l'information et de la communication avec ceux du marketing social et relationnel, la stratégie de communicaton du Programme Girmac se décline sous la forme d'une vision globale, des objectifs généraux, des cibles ainsi que des activités et outils spécifiques de communication
    Description: Published
    Description: Girmac. strategie de communication
    Keywords: Marine environment ; Communication ; Fisheries ; Communication ; Information scientists ; Communication systems ; Marine environment ; Fisheries ; Canoe fisheries
    Repository Name: AquaDocs
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  • 10
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    Estado de explotación del recurso besugo (Epigonus crassicaudus) en Chile (2007)
    Pontificia Universidad Católica de Valparaíso
    Details
    Publication Date: 2021-05-19
    Description: The exploitation status of cardinalfish (Epigonus crassicaudus) yielded in Chile between 33° to 41°S was analyzed. An indirect assessment was performed between 1997 and 2003 through size-structured model with a transition matrix defining the changes among sizes. The model was calibrated using size structures, official landings, catch-per-unit of effort (CPUE) taken from commercial fishing logbooks and standardized by generalized linear models (GLM). After 7 years of an intense fishery activity, we concluded that the cardinalfish resource in Chile is on the recruitment overfishing limit. On 2003, the spawning biomass with respect to the virginal spawning biomass is close to 40%. The biological references points (BRP) based on spawning per recruit biomass (SPR) support this assesment because the fishing mortality level on 2003 (Fact) was very close to fishing mortality level of 40% of SRP at virginal value (F40%).
    Description: Published
    Description: Besugo, Cardinalfish
    Keywords: Fisheries ; Stock assessment ; Exploitation ; Fisheries ; Stock assessment
    Repository Name: AquaDocs
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  • 11
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    The impact generated on Sea Turtles by Fisheries in the Southwestern Atlantic Ocean (2009)
    WWF Programa Marino para Latinoamérica y el Caribe
    Details
    Publication Date: 2021-05-19
    Description: This document, which is directed at the fishing sector, researchers, conservationists and fishery administrators, was developed by researchers who are members of the Specialists Group for Marine Turtle Research and conservation in the Southwestern Atlantic Ocean (SWA) in response to the urgent need to evaluate the impact generated on sea turtles by fisheries. Historically, sea turtle conservation efforts have focused almost exclusively on the protection of nesting beaches. Nevertheless, over the last decade, research has proved incidental mortality as a result of fishing activities to be one of the greatest threats to these animals. This type of interaction is not only problematic for turtles, but also generates financial losses for fishermen and businesses. In spite of the efforts that are currently underway, researchers still do not have a detailed understanding of the impact that bycatch produces on sea turtle populations in the SWA. We have a long way to go before its effects can be minimized. Further research is needed regarding the biology and ecology of the various turtle species as well as the effective application of mitigation measures. The life cycles of sea turtles are long and complex. Turtles occupy various ecosystems (nesting beaches, coastal, neritic and oceanic zones, as well as pelagic and demersal areas) throughout their lifetimes, transcending various Exclusive Economic Zones and International Waters. The five species that inhabit the SWA region perform vast feeding and reproductive migrations, traveling through areas where many different fishing fleets operate. Therefore, sea turtles in the SWA interact with virtually all fisheries. These circumstances make it necessary to carry out biological, fishing related and conservation studies on a regional level. The efficiency of the existing international and national legal instruments has yet to be determined, in terms of their effectiveness in protecting sea turtles. In some cases, legislation that is specifically related to the interaction between fisheries and turtles does exist, such as those laws requiring the mandatory use of turtle excluding devices (TEDs). There are also explicit bans on sea turtle capture. Nevertheless, none of these regulations prevent sea turtle bycatch. Although some regional legal instruments are needed, these and the existing legislation will only be effective if they are accompanied by a broader range of permanent education and control measures, to achieve the commitment of all the parties involved. The ecosystem approach is gaining popularity among fishery administration organizations. Research and conservation efforts should also be moving in that direction. A regional and international effort is required in order to compile information regarding the bycatch produced by the various types of fisheries and fleets operating in the area. The enormous increase in fishing pressure that these fleets are exerting in this area has not been accompanied by an increase in information regarding the bycatch of species that have no commercial value. Pelagic longlining is one of the fishing methods, which must be most closely monitored, due to the high levels of bycatch that it produces, as well its ample distribution throughout the region, and the high level of fishing effort that it accounts for. Coastal trawlers and gillnetters must also be considered critical players, because they too produce a large rate of bycatch. These are the three types of fisheries that are most broadly distributed throughout the region, accounting for the majority of the fishing effort. Most of the institutions that work toward sea turtle conservation in the area have only begun to address the issue of bycatch over the last decade. This timeframe is reflected in the scope and quantity of the available publications, as well as the progress of activities directed at mitigating this problem. All of the institutions that have been mentioned in this report have made the gathering of information regarding interaction between sea turtles and fisheries one of their top priorities. Some institutions are even developing working programs for monitoring fisheries and testing mitigation measures. Many of these institutions have managed to develop adequate relationships with fishermen, ship owners and administrators. Nevertheless, limited access to funding is an obstacle to the development and testing of mitigation measures. The SWA network, which is a very valuable instrument that was created in 2003, has allowed the region’s institutions and researchers to exchange information and share their experience, in addition to lending each other support in carrying out joint activities, thus strengthening sea turtle conservation efforts. The capacity demonstrated so far by the region’s researchers and institutions, testifies to their ability to continue to make progress in knowledge generation and tests of bycatch mitigation measures.
    Description: Published
    Keywords: Fisheries ; Ecology ; Fishing gear ; Fisheries ; Ecology ; Fishing gear
    Repository Name: AquaDocs
    Type: Book
    Format: 71 pp
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  • 12
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    Boletín Estadístico Pesquero 2008 (2009)
    MGAP | DINARA
    Details
    Publication Date: 2021-01-30
    Description: A partir de la firma del Proyecto de Gestión Pesquera DINARA-FAO (UTF/URU/025/URU), en septiembre de 2007, se comenzó a conformar una Unidad de Economía Pesquera. Sus objetivos se focalizaron en fortalecer la capacidad de recolección y análisis estadístico de la información socio-económica del sector. En el 2008 esta Unidad compiló y realizó un análisis de la información comprendida entre los años 2002 y 2007, reanudando luego de varios años esta publicación histórica. La misma fue un éxito en todo sentido, especialmente para consulta de los diferentes actores del sector. La aceptación y receptividad que ha tenido dicha publicación nos motiva y obliga a continuar en esta línea, rumbo a la obtención de un producto de valor y utilidad, basado exclusivamente en información oficial nacional. Este año retomamos la serie anual poniendo nuevamente a disposición de todos información actualizada, completa y de calidad que estamos seguros será nuevamente de gran beneficio para el sector público como privado, así como de interés para el público en general.
    Description: Published
    Keywords: Fisheries ; Trade ; Fishery statistics ; Fisheries ; Trade
    Repository Name: AquaDocs
    Type: Book
    Format: 48
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  • 13
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    Seychelles fisheries country profile : 1990-1994. (2006)
    Victoria: Seychelles Fishing Authority
    Details
    Publication Date: 2021-05-19
    Description: Seychelles is composed of over 100 islands with a land area of approximately 455 km², centred close to 4°30'S and 55°30'E. The combined coastline is approximately 600 km long, the oceanic shelf totals about 50 000 km² and the Exclusive Economic Zone (EEZ) is over 1 370 000 km². The total population (1994 census) stands at just under 74 000. in 1994, the population registered a growth rate of 2.2%. The GDP (1994) was SR 2373.8 million, fisheries representing 4.8% of this sum. Licensing agreements for foreign fishing activities provided a yearly revenue of SR8 million. Port Victoria is seen as a prime centre for tuna fishing operations in the Indian Ocean. In the artisanal fishery just under 900 persons are working. The largest contributor to catch by vessel type are the traditional whaler vessels representing 47.8% of the total catch. Over 66.3% of the catch is by the handline method. Carangidae representing 24% and Lutjanidae 19% of total landings. There are six specific objectives to the fisheries sector policy, which aims as resource development and maximisation of potential benefits. Nearshore fishery resources are considered to be heavily exploited, however opportunities exist around the distant islands and in deeper waters off the Mahe plateau shelf. Aquaculture of molluscs and prawns is being developed and carried out. The main constraints to development are seen as the lack of skilled manpower and foreign exchange.
    Description: Published
    Keywords: Country profile ; Fisheries ; Seychelles ; Statistics ; Fisheries ; Fishery statistics
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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    Fisheries Science Collaborations: The Critical Role of the Community (2005)
    Details
    Publication Date: 2021-05-19
    Description: The present paper is based on a collation of information, through both a literature review and an internet search, on North American programs that involve some kind of scientific collaboration between fishers and fisheries scientists. It identifies four basic models of such collaboration and offers examples of collaborative activities that seem to fit into each of them. The first model defers to the expertise of the scientist for all major decisions and creates a strong programmatic distinction between what is science, and shall be done by scientists, and what are other, related activities that can be carried out by others. Various kinds of tagging programs, fisher advisory boards, at-sea research collaboration and many other activities fit this model. The second model, traditional ecological knowledge, recognizes that fishers have available to them a unique, local knowledge of the resource that can make a supplementary contribution to fisheries science. Several government, community and environmental groups are engaged in finding, recording and using this knowledge....
    Description: Unpublished
    Keywords: Mariculture ; Fisheries
    Repository Name: AquaDocs
    Type: Conference Material , Non-Refereed , Paper
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  • 15
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    Plan de acción nacional para la conservación de condrictios en las pesquerías uruguayas. (PAN - Condrictios Uruguay) (2008)
    DINARA
    Details
    Publication Date: 2021-05-19
    Description: Durante las últimas décadas se ha observado un incremento de la captura (descartada y retenida) de condrictios en las pesquerías artesanales e industriales, conjuntamente con un rápido crecimiento de las pesquerías no reguladas, lo cual ha ocasionado una disminución en muchas poblaciones de este grupo de peces en todos los mares del mundo. La sobrepesca y los elevados niveles de mortalidad ocasionados por la captura incidental, asi como la degradación y contaminación de áreas costeras donde se ubican las zonas de alimentación, reproducción y cría para muchas especies de condrictios, han colocado a este grupo de peces en una situación difícil. Estos hechos, combinados con el bajo potencial reproductivo y la estrategia de vida de la mayoría de las especies de condríctios, no permiten una recuperación de las poblaciones, cuando las mismas se ven enfrentadas a períodos de sobreexplotación. En las aguas de Uruguay ocurren aproximadamente 100 especies de condrictios, muchas de las cuales son capturadas por diferentes pesquerias, tanto de forma incidental como dirigida. Debido a la preocupación a nivel internacional sobre la sustentabilidad de las pesquerías de tiburones, la FAO en 1998 realizó una consulta internacional a expertos y desarrolló un “Plan de Acción Internacional para la Conservación y el Manejo de los Tiburones” (PAI - Tiburones), el cual fue adoptado en 1999. El objetivo del PAI - Tiburones es asegurar la conservación, el manejo y el uso sustentable a largo plazo de los tiburones. Al hacer referencia a “tiburones”, se incluyen a todos los condrictios (tiburones, batoideos y quimeras). Este documento se divide en dos Capítulos y cuatro Anexos. El primer capítulo incluye los objetivos del PAN - Condrictios Uruguay y las medidas propuestas para alcanzar los mismos. El segundo capítulo contiene un diagnóstico general de los condrictios, las pesquerías y el marco jurídico. Como anexos se incluyen una lista de especies de condrictios citadas para Uruguay junto a su status en las listas rojas de la UICN, una reseña biológica de las especies consideradas prioritaras, una lista de abreviaturas, y listas de instituciones y personas que participaron de las reuniones desarrolladas durante el proceso de elaboración del PAN – Condrictios Uruguay. Las medidas propuestas por el PAN - Condrictios Uruguay se deberán aplicar a todas las pesquerías efectuadas por buques de bandera uruguaya, incluso los que operan fuera de la zona económica exclusiva de Uruguay.
    Description: Published
    Description: chondrichthyan, legal norm
    Keywords: M42 ; Fisheries ; Fisheries ; Conservation
    Repository Name: AquaDocs
    Type: Book
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  • 16
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    Plan de acción nacional para reducir la captura incidental de aves marinas en las pesquerías uruguayas (2008)
    DINARA
    Details
    Publication Date: 2021-05-19
    Description: La captura incidental en pesquerías comerciales ha sido identificada como una de las principales amenazas para la conservación de este grupo de aves, siendo los albatros (familia: Diomedeidae) y los petreles (familia: Procellariidae) las especies más afectadas. Debido a que los albatros y petreles presentan una gran longevidad y una baja fecundidad, pocas crías y un lento desarrollo, sus poblaciones son muy sensibles al aumento en la tasa de mortalidad causado por la captura incidental en las pesquerías. Anualmente son capturadas y muertas miles de aves marinas en las pesquerías comerciales que operan con diferentes configuraciones de palangre alrededor del mundo. Este arte, entre otras causas, está contribuyendo al descenso de varias poblaciones de albatros y preteles, configurando un claro riesgo de extinción de estas especies, si se permite que las tendencias actuales persistan. Las pesquerías de arrastre también interactúan con las aves marinas provocando la mortalidad de las mismas en un importante número. Otras pesquerías que capturan aves marinas son las que operan con redes de enmalle, redes de cerco y poteras. Respondiendo a la necesidad de reducir la mortalidad de aves marinas la Organización de las Naciones Unidas para la Agricultura y la Alimentación (FAO) desarrolló un Plan de Acción Internacional para Reducir la Captura Incidental de Aves Marinas en las Pesquerías de Palangre, el cual propicia la elaboración de Planes de Acción Nacionales en cada uno de sus países miembros. El objetivo del Plan de Acción Nacional – Aves Marinas de Uruguay es presentar un marco general que permita instrumentar medidas para la reducción de la captura incidental de aves marinas en todas las pesquerías de Uruguay.
    Description: Published
    Description: seabirds
    Keywords: M42 ; Fisheries ; Catching methods ; Fisheries
    Repository Name: AquaDocs
    Type: Book
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    El impacto generado por las pesquerías en las tortugas marinas en el Océano Atlántico Sud Occidental (2009)
    WWF Programa Marino para Latinoamérica y el Caribe
    Details
    Publication Date: 2021-05-19
    Description: Este documento, dirigido al sector pesquero, investigadores, conservacionistas y administradores de las pesquerías, surge como respuesta de investigadores pertenecientes al Grupo de Especialistas en Investigación y Conservación de Tortugas Marinas en el Atlántico Sud Occidental (ASO) a la urgente necesidad de evaluar el impacto de las pesquerías sobre las tortugas marinas. Históricamente, los esfuerzos referidos a la conservación de las tortugas marinas se han dirigido casi exclusivamente a proteger las playas de anidación. Sin embargo en la última década se ha podido comprobar que una de las mayores amenazas es la mortalidad incidental causada por las pesquerías. Esta interacción no implica únicamente un problema para las tortugas, sino que también genera pérdidas económicas para los pescadores y las empresas.
    Description: This document, which is directed at the fishing sector, researchers, conservationists and fishery administrators, was developed by researchers who are members of the Specialists Group for Marine Turtle Research and Conservation in the Southwestern Atlantic Ocean (SWA) in response to the urgent need to evaluate the impact generated on sea turtles by fisheries. Historically, sea turtle conservation efforts have focused almost exclusively on the protection of nesting beaches. Nevertheless, over the last decade, research has proved incidental mortality as a result of fishing activities to be one of the greatest threats to these animals. This type of interaction is not only problematic for turtles, but also generates financial losses for fishermen and businesses.
    Description: Cont. fotografías
    Description: Published
    Description: Sea Turtle, keeping
    Keywords: Fisheries ; Ecology ; Fishing gear ; Fisheries ; Ecology ; Fishing gear
    Repository Name: AquaDocs
    Type: Book
    Format: 71
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    Report of the meeting: Third Meeting of the Preparatory Committee For the Preparation of the Partnership Conference: Mauritius, 01 November 1999 (2005)
    ACOPS
    Details
    Publication Date: 2021-01-30
    Description: Dr Sebek introduced the ACOPS report which sums up the activities undertaken since the last Preparatory Committee meeting all of which are detailed in Annex V. In particular, Dr Sebek said that several strategic partnerships were being forged in order that certain components of the work programme, as agreed at the First Preparatory Committee Meeting in Nairobi in February, could start as soon as possible. A good example of such a policy, in the field of root cause analyses was the anticipated co-operation with UNESCO.
    Description: Published
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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    Interaction of Marine Turtles with Fisheries in the Mediterranean (2005)
    UNEP; Regional Activity Centre for Specially Protected Areas (RAC/SPA)
    Details
    Publication Date: 2021-05-19
    Description: At present, the impact of accidental catch on sea turtle populations is one of the most urgent problems that must be solved to ensure the survival of all these species worldwide. In the Mediterranean, too, all marine turtle species are affected by fishing activities, in particular the loggerhead (Caretta caretta) and the green (Chelonia mydas) turtles, which are more common than the others and are the only ones breeding in this sea. Since the Mediterranean populations of both species seem to be genetically isolated from the Atlantic ones (Bowen et al., 1992; Bowen et al., 1993; Laurent et al., 1993), fishing-induced mortality probably cannot be counterbalanced by immigration. This implies that the survival of the Mediterranean populations of these species depends to a great extent on the conservation effort that the Mediterranean countries carry on in the near future to reduce accidental mortality.
    Description: Unpublished
    Keywords: Marine turtles ; Fisheries
    Repository Name: AquaDocs
    Type: Working Paper , Non-Refereed
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    Un estudio de histamina en Dorado MAHI-MAHI Coryphaena hippurus y su relación con la calidad de producto de la pesca ecuatoriana (2009)
    INP (Ecuador)
    Details
    Publication Date: 2021-05-19
    Description: El presente trabajo llama la atención a las recientes epidemias de intoxicación histamínicas reportadas en los Estados Unidos, debido al consumo del dorado (Coryphaena hippurus) o Mahi-Mah, contaminado. Esto dió como resultado la prohición de las importaciones de esta especie, proveniente de varios países entre ellos el Ecuador, y siendo el dorado una especie de relativa importancia económica en este país, dicha prohibición ha preocupado al sector pesquero. Los estudios llevados a cabo muestran claramente la susceptibilidad de esta especie a desarrollar histamina. Esto se debe principalmente a la temperatura a la que está expuesta, pues la demora antes de enhielar el pescado es la etapa crítica. Los resultados muestran un aumento exponencial de los niveles de histamina, en ciertos casos después de tan solo 9 horas de almacenaje a temperaturas ambientales entre 25-30°C. Los niveles de histamina en pescado muestreado en el mercado local fueron tan altos como 250 mg/100g de muestra. Se demuestra que el problema se debe fundamentalmente al mal manejo de la captura por parte de la flota artesanal, y la subsecuente falta de infraestructura adecuada para conservarla, es decir, no se enfría el pescado. Sin embargo, el estudio muestra que una reducción de la temperatura del pescado de solo 15° menos, podría dar como resultado un producto de mayor calidad. En el presente trabajo se hacen recomendaciones para establecer un nivel máximo permitido para la exportación de 10 mg%, y se comparan dos métodos rápidos de análisis.
    Description: Published
    Keywords: Fisheries ; Histamines ; Quality control ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution
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    Un estudio de la factibilidad del uso de trampas para peces como un nuevo método de pesca en las Islas Galápagos (2009)
    INP (Ecuador)
    Details
    Publication Date: 2021-05-19
    Description: 153 experimental sets were made with stackable Antillean fish traps in depths of 5 to 30 m in the waters around the Galápagos Island (Ecuador), between Octobre and April 1983. 1,885 fish were caught of 18 species mainly of the families Pomadasyidae, Acanthuridae, Sparidae and Serranidae. The mean catch rate was 5,5 Kg per lift or 0,4 Kg.h-1, and the mean weight of the fish caught was 0,45 Kg. The optimum set duration was found to be between 2 and 18 hours (possibly indicating a high rate of escape). This study took place during the period of the ”El Niño”, when catches of fish in this area generally were low, and it is not known what effect this had. The catches were good compared with other shallow areas, but the fishes caught were mainly of medium quality. It is thought that significant increases in the quantity and quality of the catch could be obtained with commercial traps in deeper areas, but the efficient use of these would require new vessels and equipment, and the resulting increase in fishing effort could lead to overfishing of the most acceptable species of reef fish. Hence the development of fishery using fish traps is not recommended for Galápagos. A study of the biology of the fish caught was carried out. A bibliography of references on fish traps and their use was compiled and is included.
    Description: Published
    Keywords: Fisheries ; Trap fishing ; Fisheries ; Catch statistics ; Trap fishing
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    Type: Journal Contribution
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    Emptying the Ocean: The threatened fisheries of West Africa (2005)
    Details
    Publication Date: 2021-05-19
    Description: The coastal waters of West Africa are among the world's richest fishing grounds ... for the time being. Droughts have ravaged the hinterland and as a result people have steadily moved towards the shores of Senegal and Mauritania. At the same time the international fishing industry seems intent on exploiting West African waters to a greater and greater extent. Nicolien Zuijdgeest and photographer Bas Beentjes visited the region and found that the sustainability of fisheries is being seriously threatened.
    Description: Published
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Non-Refereed , Article
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    Gestion des Peches, de la Biodiversite et de L’environnement au Gabon (2005)
    Fishbase
    Details
    Publication Date: 2021-05-19
    Description: Le Gabon est situé en Afrique centrale avec une façade atlantique . Il est limité au Nord par le Cameroun, au Nord-ouest par la Guinée Equatoriale, à l’Est et au Sud par le Congo. La zone économique exclusive (ZEE) a une surface de 213.000 Km². elle est plus vaste que celle de Sao-Tomé et Principé, pays insulaire voisin (160.000 Km²). La façade maritime à une longueur de 750 Km , de Coccobeach à Ndindi. La largeur moyenne du plateau continental est de 60 Km, soit une surface à peu-près de 40.600 Km² de la côte à l’isobathe de 200 mètres. Ce plateau se termine par un talus peu abrupt, d’une longueur de 750 Km et d’une superficie de 11.200 Km² entre 200 et 800 mètres de profondeur....
    Description: Unpublished
    Keywords: Biodiversity ; Environments ; Fisheries
    Repository Name: AquaDocs
    Type: Working Paper , Non-Refereed
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    Biodiversity, Trade, And The Fishing Sector Case Study: West Africa (2005)
    Details
    Publication Date: 2021-05-19
    Description: In 1997, IUCN-The World Conservation Union, with the financial support of the German Federal Ministry for Economic Co-operation and Development, initiated a project to examine the relationship between the Convention on Biological Diversity (CBD) and the rules of international trade–those administered by the World Trade Organisation (WTO), in particular. The project was motivated by a widely shared concern that the aims of the CBD, which are essentially to conserve and equitably distribute the benefits of the environment, might be undermined by the WTO, which aims at the liberalisation of trade. Liberalised trade has the potential to integrate economies, regionally and globally, in mutually beneficial ways. But some observers are concerned that it may do so at a cost of impairing the environment and amplifying disparities in wealth, much of which, in poorer nations, is disproportionately represented in endowments of natural resources. Other commentators have claimed to locate synergistic potential, suggesting, for example, that trade law’s anti-subsidy disciplines might be conscripted into the campaign against environmental abuses such as overfishing.
    Keywords: Biodiversity ; International trade ; Fisheries
    Repository Name: AquaDocs
    Type: Conference Material , Non-Refereed , Paper
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    Marine biological research in Mozambique: past, present and future (2005)
    Royal Academy of Sciences
    Details
    Publication Date: 2021-05-19
    Description: This synopsis describes the development of marine biological research, including fisheries, in Mozambique. With around 3000 km of coastline, the living resources of the sea playa major role in the Mozambican society, mainly as a source of protein and income for the population, and of foreign revenue through exports. In the first years, after independence, in 1975, research activities in marine sciences were limited and mainly concentrated to fisheries through cooperation with Norway and the Soviet Union. A new era for biology started in 1985 when the Faculty of Biology at Universidade Eduardo Mondlane was re-opened. A 5yr curriculum towards a licentiate degree was introduced with a strong marine profile. Since the 1990s, a very dynamic de-velopment in Mozambican marine biological research has occurred. Several academic degrees in marine biology from universities abroad were obtained, and local expertise developed; building vital institutions and enrolling in advanced research activities.
    Description: Published
    Keywords: Marine biology ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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    Feeding partitioning among tuna taken in surface and mid-water layers: the case of yellowfin (Thunnus albacares) and bigeye (T. obesus) in the Western Tropical Indian Ocean (2006)
    WIOMSA
    Details
    Publication Date: 2021-05-19
    Description: The trophic relations of two apex predators, yellowfin and bigeye tuna (Thunnus albacares and T. obesus), and their prey were investigated in the western tropical Indian Ocean. The contents of 173 non-empty stomachs were analysed from specimens caught with longlines and purse seine during scientific and fishing cruises. Diet data were processed by occurrence, by number, and by wet weight and a comparison of diets between surface and deep swimmers made. Crustaceans were the almost exclusive food source of surface-swimming bigeye tuna, with the stomatopod (Natosquilla investigatoris) being the sole prey item recorded in this category. The diet of deep-swimming yellowfin tuna was balanced between epipelagic fish, crustaceans and cephalopods. Bigeye tuna fed predominantly on cephalopods and mesopelagic fish (Scopelarchidae and Paralepididae), for which this predator appeared to be the most active chaser. The diet of the two predators reflects their ability to catch the prey, and their vertical distribution.
    Description: Published
    Description: Natosquilla investigatoris; Thunnus albacares; T. obesus; Feeding ecology; Vertical habitat
    Keywords: Tuna ; Fisheries ; Diets ; Tuna fisheries ; Analysis
    Repository Name: AquaDocs
    Type: Journal Contribution , Non-Refereed , Article
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    Different property rights regimes in the Lake Victoria multiple species fishery (2006)
    Details
    Publication Date: 2021-05-19
    Description: Greater ecosystem complexity is recognized by studying a two species predator-prey model under two property rights regimes: free entry and a system such as individual quotas which execute an economically optimal solution. A bottom-up management experiment is discussed in the context of Lake Victoria fisheries.
    Description: Published
    Keywords: Predators ; Resource management ; Fisheries ; Freshwater fish ; Predators ; Resource management
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 71093 bytes
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    Résultats généraux des pêches maritimes 2005 (2008)
    Details
    Publication Date: 2021-01-30
    Description: This document presents the Senegalese maritime fishing statistics in 2005 with the catch from the artisanal fisheries, the industrial fisheries as well as exports and the value of commercial coating.The document also informs on the number of estimated canoes , the estimated number of fishermen, consumption of fresh fish product and processed products. The document also shows fisheries statistics by marine areas.
    Description: Ministère de l'Economie Maritime, Direction des Pêches Maritimes, Dakar (Sénégal)
    Description: Published
    Description: statistique, pêche artisanale, pêche industrielle, commercialisation, pêche maritime, pêche par espéce
    Keywords: Demersal fisheries ; Fisheries ; Marine fisheries ; Pelagic fisheries ; Commercial fishing ; Artisanal fishing ; Cephalopod fisheries ; Demersal fisheries ; Fisheries ; Fishery statistics ; Fishing vessels statistics ; Marine fisheries ; Mollusc fisheries ; Pelagic fisheries ; Shrimp fisheries
    Repository Name: AquaDocs
    Type: Report
    Format: 110
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    Rapport national sur l'état de l'environnement marin et côtier (2009)
    Details
    Publication Date: 2021-01-30
    Description: Le domaine maritime sénégalais s’étend de 18°00 N, -20°00 W, -16°30 E, 12°15 S ; la presqu’île du Cap-Vert située entre 14°30 N et 15°00 N le divise en deux zones aux caractéristiques topographiques distinctes. Au nord, le plateau continental est peu étendu vers le large et orienté Nord-Nord/Est. Au sud de la presqu’île, le plateau s’élargit et le talus continental est orienté nord-sud. L’embouchure du fleuve Sénégal au Sénégal au Nord de la presqu’île du Cap-Vert et celles de la Gambie et de la Casamance au Sud constituent également un trait marquant de cette région. Les travaux réalisés au Sénégal en océanographie ont montré : - l’existence de deux saisons marines aux caractéristiques très différentes qui se succèdent : une saison chaude de juillet à octobre et une saison froide de décembre à mai. Ces deux saisons sont séparées par des périodes de transition. Pendant la saison froide, les alizés (vent de secteur nord-ouest à nord-est) s’établissent et engendrent à la côte une résurgence d’eau profonde (upwelling) vers la surface ; - la mise en évidence de systèmes de grands courants aux caractéristiques différentes : le courant des Canaries et le contre courant équatorial ; - la description de trois grandes houles au large du Sénégal : o la houle de Nord-Nord ouest qui a lieu toute l’année o la houle de Sud-Sud ouest apparaissant pendant l’hivernage o la houle d’ouest possible aux environs du mois de novembre. Le littoral sénégalais représente une zone d’intérêt stratégique à la fois sur le plan démographique, économique et environnemental. Les milieux naturels, dans un état de conservation relativement préservé, produisent des ressources vitales pour les 11 millions d’habitants peuplant le Sénégal. L’économie nationale sénégalaise est très dépendante de ces ressources côtières et marines qui constituent les principales recettes en devises, qu’il s’agisse de pêche ou de tourisme. L’analyse de la situation et des tendances montre que la zone côtière fait l’objet de pressions diversifiées et de plus en plus lourdes. Ces pressions se traduisent souvent par des conflits d’intérêts entre les différents secteurs et par des impacts qui génèrent une dégradation de l’environnement et des conditions de vie des populations. Cette évolution risque ainsi de compromettre les potentialités de développement offertes par les 700 Km de littoral sénégalais. La pression démographique se développe préférentiellement sur la zone côtière qui accueille déjà près de 60% des habitants, notamment dans les centres urbains et les capitale, toutes situées en bord de mer, et qui continuent à recevoir des populations en provenance de l’intérieur, réfugiés climatiques ou économiques, ou simplement jeunesse attirée par les « lumières de la ville ». Cet exode, à l’origine de dysfonctionnements des systèmes de production ruraux qui manquent peu à peu de main d’oeuvre, contribue à son tour à générer des perturbations au niveau des centres urbains où la misère se substitue parfois à la pauvreté.
    Description: Les besoins en matériaux de construction consécutifs à cette évolution démographique entraînent des prélèvements massifs de sable sur les plages qui ont à leur tour des conséquences négatives sur l’érosion et la protection du littoral. La fragilisation des cordons dunaires augmente ainsi les risques d’inondations des terres, la ville de Saint Louis étant particulièrement vulnérable à cet égard. Les besoins en développement ont conduit à la réalisation d’infrastructures le long du littoral. Ces constructions, qui tiennent trop rarement compte des contraintes environnementales, ont entraîné des répercussions structurelles sur l’équilibre de la zone côtière. Ainsi, les barrages anti-sel, tel le barrage de Diama sur le fleuve Sénégal, ont entraîné des répercussions sur le fonctionnement de certains écosystèmes côtiers. En condamnant les influences des apports d’eau douce ils appauvrissent les milieux situés en aval, stérilisant peu à peu des zones riches en ressources ainsi que les économies et les cultures qui en dépendent. Le ralentissement des courants et la baisse de salinité en amont du barrage favorisent l’apparition de certaines plantes envahissantes, telles que la bilharziose ou le paludisme. Les effectifs de poissons dépendant de milieux à salinité variable sont directement affectés, expliquant par exemple une chute de près de 70% des captures dans le bas delta du Sénégal. Les besoins du développement se traduisent également par l’amélioration ou la création d’axes routiers qui, dans la majorité des cas, longent la zone côtière. Ces ouvrages entraînent des impacts directs sur l’environnement, tels la destruction des mangroves là où les routes barrent l’écoulement des marées (exemple de la route Samba Dia – Djifère. Les systèmes de production traditionnels sont en règle générale peu préparés à faire face à des circuits de commercialisation organisés à une échelle régionale ou internationale, où à des technologies plus performantes, et éprouvent des difficultés à maintenir un contrôle sur leur terroir. Faute de pouvoir opérer une métamorphose rapide de leur système de production, le risque existe de voir peu à peu disparaître des savoir-faire d’une grande valeur dans la gestion même de ces territoires et de leurs ressources et , plus généralement, des cultures qui leur sont associées. Le développement industriel exerce des impacts potentiels ou réels de grande magnitude sur la zone côtière et marine. Les secteurs les plus significatifs à cet égard sont le tourisme et les hydrocarbures. Concernant le premier, les infrastructures, principalement orientées vers le tourisme balnéaire, sont en grande majorité installées à proximité directe de la zone côtière. L’absence quasi généralisée d’études d’impacts approfondies et indépendantes a conduit à de nombreux échecs. Ainsi, la plupart des projets ont été pensés et réalisés sans tenir suffisamment compte des contextes socio-économiques, culturels et environnementaux dans lesquels ils s’insèrent. Certaines réalisations ont été planifiées sur des secteurs soumis à une forte érosion littorale, compromettant de façon irrémédiable non seulement les investissements mais l’utilisation ultérieure du site, comme cela s’est produit sur les plages au sud immédiat du Cap Skirring. Les questions relatives à la disponibilité en eau douce qui se posent de façon cruciale dans le Saloum par exemple, à la gestion des déchets et des eaux usées ne sont que rarement prises en considération de façon structurelle et durable, conduisant à la dégradation de l’environnement ou à des conflits avec les communautés locales qui nuisent à la qualité même du tourisme. L’exploration et l’exploitation des ressources en hydrocarbures représentent aussi un secteur d’intérêt stratégique avec une généralisation des prospections. Si la découverte de gisement d’intérêt commercial représente une opportunité majeure pour l’économie nationale, elle soulève néanmoins un certain nombre de questions au regard de l’environnement. En effet les des puits. Parmi ces risques nous pouvons citer les impacts des études sismiques sur les organismes marins, notamment poissons et cétacés, le rejet de fluides toxiques et déblais de forage, le déversement des eaux de production et les pollutions aiguës dues à des accidents intervenant pendant le forage, le stockage ou le transport. Le Sénégal en ce moment, en est au stade de la prospection. Toutefois, pour ce qui concerne le transport d’hydrocarbures, plus de 90 000 0000 de tonnes d’hydrocarbures transitent par les côtes sénégalaises. Les modèles de dérive des nappes élaborés par la Compagnie pétrolière Woodside en relation avec le champ de Chinguetti, actuellement en cours de production au large de la Mauritanie, montrent des probabilités d’impact sur les côtes allant du golfe d’Arguin jusqu’à Dakar, en cas d’accident. La surexploitation des ressources halieutiques constitue également un problème au niveau de l’environnement marin et côtier. En effet, si une partie de la fluctuation des biomasses peut s’expliquer par les changements du régime des upwellings, la baisse des captures s’explique par un effort de pêche excessif, que ce soit dans le sous-secteur industriel ou artisanal. A cette surcapacité vient s’ajouter la présence de flottes illicites non déclarées et non réglementées. L’utilisation de certains engins ou pratiques de pêche contribue à aggraver la situation : la pêche crevettière est à l’origine de prises accidentelles qui représentent jusqu’à 85 % du total des captures, incluant des espèces protégées comme les tortues marines, et qui sont rejetés à la mer . Les chaluts de fonds, qui vont pêcher jusqu’à 800 m de profondeur, ainsi que les dragues à coquillages entraînant des dégâts structurels sur les écosystèmes De plus l’influence des marchés à l’exportation exerce des pressions sélectives sur certaines espèces, les espèces démersales de poissons, céphalopodes étant les plus recherchées sur le marché. Les changements climatiques ont également des impacts négatifs sur l’environnement marin et côtier. On sait que l’élévation du niveau marin aura des répercussions directes sur les installations humaines littorales ainsi que sur les écosystèmes insulaires et côtiers. Des zones de mangroves entières qui ne disposent pas des conditions écologiques pour s’adapter peuvent disparaître, entraînant des risques accrus d’érosion et d’inondation. Ces mêmes risques se multiplient avec la fréquence accrue des épisodes météorologiques exceptionnels tels que les ondes de tempêtes capables de drosser les pirogues à la côte ou de provoquer la rupture de cordons dunaires. On sait par ailleurs que le réchauffement de la température des mers influe négativement sur la productivité des océans et la dynamique des courants tels que le courant profond originaire de l’antarctique et qui exporte vers le Sénégal et les autres pays de la sousrégion des sels nutritifs présents dans les upwellings. On observe également une diminution de la puissance des alizés qui pourrait avoir des répercussions directes sur la force des upwellings et donc sur la productivité des pêcheries et du milieu marin en général. La stratégie de réponse proposée combine une protection des zones côtières importantes et un reboisement des dunes littorales dans les secteurs de la côte nord et de la Flèche de Sangomar particulièrement menacés. L’évaluation économique de cette stratégie montre qu’elle est coûteuse mais nettement en deçà de la valeur économique des terres qu’elle sera amenée à protéger. Des efforts complémentaires devront cependant être faits pour évaluer le coût d’autres solutions de protection telles que le nourissement artificiel des plages. Par ailleurs, la stratégie envisagée ne répondant qu’à l’un des impacts des changements climatiques, à savoir les inondations, toute une série de mesures dites d’accompagnement ont été suggérées qui visent à diminuer la vulnérabilité en gérant mieux les ressources présentes dans la zone côtière, en développant les techniques de récupération des sols salés et en prenant des mesures législatives et institutionnelles appropriées. Enfin, il est très important de souligner que ces différentes mesures ne devraient être envisagées que dans un cadre plus global de gestion intégrée des zones côtières, seul à même d’assurer la participation de l’ensemble des acteurs concernés, l’éducation, la recherche et l’information environnementales mais aussi la cohérences et le suivi des mesures.
    Description: Ministère de l'Environnement, de la Protection de la Nature, des Bassins de Rétention et des Lacs Artificiels, Dakar (Sénégal)
    Description: Published
    Description: écosystéme marin; technique de pêche; filet; érosion côtière; pollution; pêche; flore; environnement; migration; pêcheur; oiseau d'eau; tortue marine; lamantin; requin; mammifére marin; réglementation; mangrove; écosystème; estuaire; delta
    Keywords: Deltas ; Ecosystems ; Marine environment ; Aquatic birds ; Fishermen ; Fisheries ; Mangroves ; Coastal erosion ; Flora ; Fishing nets ; Deltas ; Ecosystems ; Mangroves ; Coastal erosion ; Marine environment ; Marine mammals ; Shark fisheries ; Turtle fisheries ; Aquatic birds ; Fishermen ; Migrations ; Flora ; Fisheries ; Marine pollution ; Fishing nets ; Climatic changes
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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    Résultats généraux de la pêche maritime sénégalaise 2002 (2007)
    Details
    Publication Date: 2021-01-30
    Description: Published
    Description: pêche par espéce; crustacé
    Keywords: Fisheries ; Artisanal fishing ; Capture fishery economics ; Fisheries ; Fishery statistics
    Repository Name: AquaDocs
    Type: Report
    Format: 1546887 bytes
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    Format: 122
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    The Fisheries of Eritrea (2005)
    FAO
    Details
    Publication Date: 2021-01-30
    Description: Published
    Description: Eritrea
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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    From Farming to Fishing: Marine Resource Conservation (2009)
    Western Indian Ocean Marine Science Association
    Details
    Publication Date: 2021-05-19
    Description: This paper examines the arrival of a new group of fishermen on the Kenyan coast and what this has meant for the state of fishery resources. It reviews four subject areas: access and the number of fishermen; the fishermen’s identity; the choice of fishing gear; and the fishing grounds selected. Data were collected from a small number of fishing households in the villages of Uyombo and Takaungu in Kilifi District, using mainly qualitative research methods. Local households on the Kenyan coast face increasing pressure on land as well as on marine resources. The declining economic situation and greater pressure on land have made people turn to fishing as an income-generating activity. This group of fishermen is referred to as the ‘new’ generation of fishermen as they have been involved in fishing for only one or two generations (including the current one) in contrast to the ‘old’ generation from families who have been fishing or in fishingrelated activities for much longer. The old generation of fishermen and their households have also diversified their incomes, with many fishing households turning to farming, for example, with women and grown-up children involved in various activities. The new generation of fishermen, mainly of the Mijikenda population group, has often been blamed for the loss of traditional access regulations and for using harmful fishing gear. This paper discusses the new generation of fishermen and their identity as they perceive it and relates this to employment generation as a policy measure for marine conservation.
    Description: Published
    Description: Artisanal fisheries;household survey; income diversification; marine conservation,
    Keywords: Fisheries ; Fishery resources ; Fisheries ; Fishery resources
    Repository Name: AquaDocs
    Type: Journal Contribution
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    Rapport de la septième rencontre de travail IMROP/IEO pour l’étude des pêcheries de crustacés. (2005)
    IMROP/IEO
    Details
    Publication Date: 2021-05-19
    Description: Cette rencontre entre dans le cadre du programme conjoint de recherche sur les crustacés entre l’IMROP et l’IEO (Espagne)
    Description: Published
    Keywords: Captures ; Effort de pêche ; Length distribution ; Fishing effort ; CPUE ; Débarquement ; Landing ; Pêcheries ; Mauritanie ; Fisheries ; Accords de pêche ; UE ; Mauritania ; Crevettes ; Shrimps ; EU ; Distribution de taille ; Fishing fleet ; Fishing agreements ; Flottille de pêche ; Catches ; Crustacean fisheries
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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    Fish for Thought: Fisheries, International Trade and Sustainable Development (2005)
    International Centre for Trade and Sustainable Development (ICTSD) and IUCN-The World Conservation Union
    Details
    Publication Date: 2021-05-19
    Description: The Fisheries, International Trade, and Sustainable Development programme aims to inject both the sustainable development and natural resource management perspectives into the debate on trade and fisheries. The ultimate objective of the programme is to make international trade in fisheries supportive of sustainable development. The programme's main activity will be to convene a series of policy dialogues on fisheries, international trade, and sustainable development which will link processes and actors, and bring together all the different stakeholders' perspectives. Initially the programme aims to facilitate a process in which each stakeholder can move beyond the constraints inherent in his or her position, to enable all participants to step back from particular debates and stand-offs regarding fisheries, trade, and sustainable development-related issues such as subsidies, ecolabelling, or conservation measures. The dialogues, research, and information exchange process will seek to build common understanding and a baseline of shared information, and pave the way for participating stakeholders to seek solutions compatible with the aims of sustainable development by exploring ways to improve resource management while safeguarding the livelihoods of those who depend on fisheries, and ensuring economic growth for developing countries.
    Description: International Centre for Trade and Sustainable Development, IUCN — The World Conservation Union Publications Service Unit
    Description: Published
    Keywords: Sustainable development ; Fisheries ; International trade
    Repository Name: AquaDocs
    Type: Book Section , Non-Refereed
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    Ecological and fisheries development of Lake Manzalah (Egypt): hydrography and chemistry of Lake Manzalah (2006)
    Alexandria: National Institute of Oceanography and Fisheries
    Details
    Publication Date: 2021-05-19
    Description: This journal is published by the NIOF, Egypt
    Description: Lake Manzalah; the largest delta Lake in Egypt represents a dynamic system that has been undergoing continuous and pronounced changes since long times. In the last year’s this Lake faced drastic problems that retarded its environmental and fisheries development; the most serious one is the discharge of waste water. It is attempted in the present study to investigate the chemical characters of Lake Manzalah water during 2001-2002. Water temperature ranged from an average of 12.35oC in January and 29.14oC in July. Dissolved Oxygen, pH and total dissolved solids were found in ranges optimum for the living of marine and freshwater fish species. The average concentrations of nutrients lied in the following ranges: 1.24 to 4.89 μmol PO4 -3 l-1 , 5.08 to 28.73 μmol SiO4 -2 l-1 and 1.81 to 17.7 μ_mol NO3-1 l-1 The concentrations of phosphorus and nitrogen compounds were found to be relatively higher at the southern regions of the Lake near to the outlets of the drains.
    Description: NIOF
    Description: Published
    Keywords: Hydrography ; Water ; Chemistry ; Chemical composition ; Water content ; Environment ; Chemical composition ; Environments ; Water content ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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    Focus on the Marine fisheries Research Division (2005)
    Accra : Marine Fisheries Research Division
    Details
    Publication Date: 2021-05-19
    Description: Ministry of Food and Agriculture
    Description: Directorate of Fisheries
    Description: Published
    Description: Exploitation, Upwelling, Pelagic species, Demersal species, Atlantic Ocean
    Keywords: Fishery policy ; Marine environment ; Fisheries ; Exploitation
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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    Modelling the economics of ecosystem services: nutrient retention in wetlands and fisheries in Lake Victoria (2006)
    Details
    Publication Date: 2021-05-19
    Description: This paper models the effect of changes in wetlands yields within the freshwater fishery of (the Kenyan segment) of Lake Victoria. Specifically, it models the nutrient retention function of wetlands as a buffer against fertilizer run-off from agriculture, and the impact of nutrient loading on the fishery. Run-off from the watershed is among the major causes of eutrophication in the lake, along with atmospheric deposition and sewage and other organic discharges from domestic and industrial activities. The ecological component of the model captures the interactions between phosphorus loading, wetland area, water quality and fish stocks. Chlorophyll-a concentration is used as a proxy for phytoplankton density, and as a measure of nutrient enrichment. The impact of this on fish stocks is then estimated using using Ecopath. The economic component of the model then evaluates the effect of changes in stocks on performance in the fishery, given the regulatory regime in Kenya. We use the results to obtain an estimate of the value of the nutrient retention function of wetlands on the margins of the lake.
    Description: Published
    Keywords: Valuation of ecosystem services ; Ecological-economic interactions ; Fisheries ; Eutrophication ; Fishery resources ; Ecosystems ; Fishery resources ; Wetlands
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 302138 bytes
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    The industrial tuna fishing activity in the Western Indian Ocean: report for the year 2001 (2006)
    Victoria: Seychelles Fishing Authority | Victoria
    Details
    Publication Date: 2021-08-09
    Description: Published
    Description: Industrial tuna fishing
    Keywords: Tuna ; Fisheries ; Fishery economics ; Fishery industry ; Fishery statistics ; Tuna fisheries
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 1589602 bytes
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    African Fisheries: Major Trends and Diagnostic of the 20th Century. (2005)
    IIFET
    Details
    Publication Date: 2021-05-19
    Description: The marine fisheries production from African coastal countries, combined with that of freshwater production of the continent is estimated to be 6 millions metric tons, corresponding only 5 % of the total world production. Africa's contribution to fisheries products (1,5 %) is insignificant compared to that of world commerce which is around 44 millions tons. This deplorable situation is due to a certain number of problems which include s among others, the relative biogenic poverty of African waters, the exploitation of African waters by foreign vessels, the total lack of catches effected by the African vessels out of their regional boundaries, the lack of knowledge on the mastering of commercialisation and on veritable commercial politics of fisheries products, including quality assurance. In addition to this, the almost inexistence of the aquaculture in the sub-Saharan countries. This paper analyses the African fisheries in the whole continent and presents the general characters, notably its evolution, fisheries resources, valorisation and consumption of fisheries products. The global analysis made here accords a priority to markets as well as to the framework of contribution of these products and tries, at the end of the 20th century, to present some trends. Facing the globalisation phenomena, how will African fisheries producers be challenged in the new millennium? This continental level analysis brings out field application and some different development perspectives for both small scale and industrial fisheries sub-sectors.
    Description: Published
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: Proceedings Paper , Non-Refereed
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    Kenyan Exports of Nile Perch: impact of food safety standards on an export-oriented supply chain. (2006)
    Details
    Publication Date: 2021-05-19
    Description: Over the past decade, exports of fish and fishery products from developing countries have increased rapidly. However, one of the major challenges facing developing countries in seeking to maintain and expand their share of global markets is stricter food safety requirements in industrial countries. Kenyan exports of Nile perch to the European Union provide a notable example of efforts to comply with such requirements, overlaid with the necessity to overcome restrictions on trade relating to immediate food safety concerns. Although food safety requirements were evolving in their major markets, most notably the EU, most Kenyan exporters had made little attempt to upgrade their hygiene standards. Likewise, the legislative framework of food safety controls and facilities at landing sites remained largely unchanged. Both exporters and the Kenyan government were forced to take action when a series of restrictions were applied to exports by the EU over the period 1997 to 2000. Processors responded by upgrading their hygiene controls, although a number of facilities closed, reflecting significant costs of compliance within the context of excess capacity in the sector. Remaining facilities upgraded their hygiene controls and made efforts to diversify their export base away from the EU. Legislation and control mechanisms were also enhanced. Hygiene facilities at landing beaches were improved, but remain the major area of weakness. The Kenyan case illustrates the significant impact that stricter food safety requirements can have on export-oriented supply chains. It also demonstrates how such requirements can exacerbate existing pressures for restructuring and reform, while prevailing supply and capacity issues constrain the manner in which the supply chain is able to respond. In Kenya most of the concerted effort to comply with these requirements was stimulated by the sudden loss of market access in very much a “crisis management” mode of operation, illustrating the importance of responding to emerging food safety requirements in a proactive and effective manner. This paper - a product of the International Trade Department, Poverty Reduction and Economic Management Network - is part of a larger effort in the network to understand the challenges and opportunities facing developing countries associated with evolving international standards for food and other products.
    Description: Published
    Keywords: Development economics ; Private sector ; Public Policy Fishing Industry ; Environmental economics & policies ; Fisheries ; Agricultural Knowledge & Information Systems ; Agribusiness & Markets ; Coastal and marine resources ; Fishery management ; Fishery products ; Fishery resources ; Food availability ; Aquaculture development ; Aquaculture economics ; Fishery economics ; Fishery management ; Fishery products ; Food availability
    Repository Name: AquaDocs
    Type: Working Paper , Non-Refereed
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    Résultats généraux de la pêche maritime sénégalaise 2001 (2007)
    Details
    Publication Date: 2021-01-30
    Description: Published
    Description: pêche artisanale; pêche industrielle; pêche par espéce
    Keywords: Fishery oceanography ; Fisheries ; Fishery economics ; Fishery statistics ; Fishery oceanography ; Commercial fishing ; Artisanal fishing ; Fish catch statistics ; Fisheries
    Repository Name: AquaDocs
    Type: Report
    Format: 792055 bytes
    Format: application/pdf
    Format: 129 pp
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    Résultats généraux des pêches maritimes 2004 (2008)
    Details
    Publication Date: 2021-01-30
    Description: This document presents the Senegalese maritime fishing statistics in 2004 with the catch from the artisanal fisheries, the industrial fisheries as well as exports and the value of commercial coating.The document also informs on the number of estimated canoes , the estimated number of fishermen, consumption of fresh fish product and processed products. The document also shows fisheries statistics by marine areas.
    Description: Ministère de l'Economie Maritime et des Transports Maritimes Internationaux, Direction des Pêches Maritimes, Dakar (Sénégal)
    Description: Published
    Description: statistique, pêche artisanale, pêche industrielle, commercialisation, pêche maritime, pêche par espéce
    Keywords: Fisheries ; Demersal fisheries ; Marine fisheries ; Marine resources ; Marketing ; Coastal fisheries ; Pelagic fisheries ; Multispecies fisheries ; Artisanal fishing ; Fish catch statistics ; Fisheries ; Coastal fisheries ; Demersal fisheries ; Pelagic fisheries ; Marine fisheries ; Marine molluscs ; Marine resources ; Marketing ; Capture fishery economics ; Multispecies fisheries
    Repository Name: AquaDocs
    Type: Report
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    Résultats généraux des pêches maritimes 2006 (2008)
    Details
    Publication Date: 2021-01-30
    Description: This document presents the Senegalese maritime fishing statistics in 2006 with the catch from the artisanal fisheries, the industrial fisheries as well as exports and the value of commercial coating.The document also informs on the number of estimated canoes , the estimated number of fishermen, consumption of fresh fish product and processed products. The document also shows fisheries statistics by marine areas.
    Description: Ministère de l'Economie Maritime, Direction des Pêches Maritimes, Dakar (Sénégal)
    Description: Published
    Description: statistique, pêche artisanale, pêche industrielle, commercialisation, pêche maritime,
    Keywords: Fisheries ; Demersal fisheries ; Fishery data ; Marine fisheries ; Coastal fisheries ; Commercial fishing ; Cephalopod fisheries ; Coastal fisheries ; Demersal fisheries ; Fisheries ; Fish catch statistics ; Fishery economics ; Fishery industry ; Fishery data ; Fishery statistics ; Fishing vessels statistics ; Marine fisheries
    Repository Name: AquaDocs
    Type: Report
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    Résultats Généraux de la Pêche Maritime 2000 (2007)
    Details
    Publication Date: 2021-01-30
    Description: Published
    Description: pêche artisanale; pêche industrielle; pêche par espéce; Saint-Louis; Thiès; Louga; Dakar; Ziguinchor
    Keywords: Fishery products ; Fisheries ; Capture fishery economics ; Fishery economics ; Fishery statistics ; Fishery products ; Fisheries ; Artisanal fishing
    Repository Name: AquaDocs
    Type: Book
    Format: 950233 bytes
    Format: application/pdf
    Format: 131
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    The "public face" of the New England Regional Fishery Council : year 1 (2007)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-25
    Description: The first year of the New England Regional Fisheries Management Council has been marked by its experimental aura. Neither the Council nor the various sectors (representatives of the Federal and State agencies, members of the fishing industry, the public at large) were clear as to exactly what they were to do and how they were to do it--except in the broadest, most flexible (ambiguous?) terms. This created certain operational difficulties, and confusion for those whose livelihood was affected by the Council's operation. This latter group, particularly the fishermen, knew little of what went on, save in terms of the 'public facet of the Council--i.e., that portion of the Council's performance which occurred during the monthly meetings which were open to the public and which, supposedly, received public input at that time. This study defines that public face, deliberately avoiding the presentation of any data which was not accessible to the average audience participant, in an attempt to present some of the behavior which all participants demonstrated and which generated responses and reactions on the part of the other sectors. It uses standard anthropological techniques of data gathering and analysis to show the degree to which impression management on the part of all the actors operated in a systematic fashion to produce action, reaction, and counter-action. Particularly emphasized is the communication aspects.
    Description: Prepared with funds from the Pew Memorial Trust and by the Department of Commerce, NOAA Office of Sea Grant under Grant #04-7-158-44104, and the Marine Policy and Ocean Management Program of the Woods Hole Oceanographic Institution; and by sabbatical funding from the State University of New York.
    Keywords: Legislation ; Fisheries ; Sociocultural analysis
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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    Crustal accretion and evolution at slow and ultra-slow spreading mid-ocean ridges (2009)
    Massachusetts Institute of Technology and Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-25
    Description: Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 2001
    Description: Half of the ocean crust is formed at spreading centers with total opening rates less than 40 km/Myr. The objective of this Thesis is to investigate temporal variations in active ridge processes and crustal aging at slow-spreading centers by comparing axial crustal structure with that on conjugate flanks of the slow-spreading Mid-Atlantic Ridge (MAR) (full rate, 20 km/Myr) and the ultra-slow spreading Southwest Indian Ridge (SWIR) (full rate, 14 km/Myr). Seismic refraction data collected along the rift valley and flanking rift mountains of the OH-l segment (35°N) at the MAR show that the entire crustal section is constructed within a zone that is less than 5 km wide. Shallow-level hydrothermal circulation within the axial valley is suggested by the rift mountain seismic profiles, which show that the upper crust is 20% thinner and 16% faster along strike than zero-age crust. These effects probably result from fissure sealing within the extrusive crust. Deeper crustal velocities remain relatively constant at the segment midpoint within the first 2 Myr, but are reduced near the segment offsets presumably by faulting and fracturing associated with uplift out of the rift valley. A temporal variation in axial melt supply is suggested by a 15% difference in along-strike crustal thickness between the rift valley and rift mountains, with relatively less melt supplied today than 2 Ma. Crustal accretion at the SWIR appears to occur in a similar manner as at the MAR, although gravity and seismic data indicate that the average crustal thickness is 2-4 km less at the ultra-slow spreading SWIR. A 25 Myr record on both flanks of the ridge shows that seafloor spreading has been highly asymmetric through time, with 35% faster crustal accretion on the Antarctic (south) plate. A small-offset non-transform discontinuity between two ridge segments is just as stable as two neighboring transform discontinuities, although a single mantle Bouguer gravity anomaly centered over the non-transform offset indicates that this boundary does not significantly perturb underlying mantle flow. Off-axis magnetic anomalies are recorded with high fidelity despite the very low spreading rates and the absence of a basaltic upper crust in one area. The lower crust may be the dominant off-axis carrier of the magnetic signal, contrary to traditional models of crustal magnetic structure. Morphological and gravity data show evidence of asymmetric crustal accretion across the SWIR ridge axis, with slightly warmer mantle temperatures beneath the slower-spreading African (north) plate.
    Description: Funding was provided by the National Science Foundation through Contract No. OCE-9300450 and by the Joint Oceanographic Institutions through Subcontract No. JSC1-00.
    Keywords: Earth ; Crust ; Geophysics ; Maurice Ewing (Ship) Cruise EW96-08 ; Yokosuka (Ship) Cruise ; Kairei (Ship) Cruise ; Conrad (Ship) Cruise RC2709
    Repository Name: Woods Hole Open Access Server
    Type: Thesis
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    Applications of time series analysis to geophysical data (2007)
    Massachusetts Institute of Technology and Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-25
    Description: Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution June, 1980
    Description: This thesis consists of three papers applying the techniques of time series analysis to geophysical data. Surface wave dispersion along the Walvis Ridge, South Atlantic Ocean, is obtained by bandpass filtering the recorded seismogram in the frequency domain. The group velocity is anomalously low in the period range of 15-50 s, and formal inversion of the data indicates both crustal thickening to 12.5 km and low shear velocity (4.25-4.35 km/s) to depths of 40-50 km. The electromagnetic induction fields at a deep ocean site northeast of Hawaii were used to determine the electrical conductivity of the earth to 400 km depth. Singular value decomposition of the data matrix indicates three degrees of freedom, suggesting source field complications and a two dimensional conductive structure. Inversion of one of the principal terms in the response function shows an abrupt rise in electrical conductivity to 0.05 mho/m near 160 km with no resolvable decrease below this. A model study suggests that moving source fields influence the induction appreciably in the other principal response tunction. A set of piston cores from the northeast Atlantic Ocean are used to construct paleomagnetic time series covering the interval 25-127 kybp. Stratigraphic control is provided by counts of planktonic toraminifera, and empirical orthogonal function analysis shows a significant decrease in sedimentation rate at the interglaciai/glacial transition. The sediments are magnetically stable and reliable relative paleointensity measurements could be obtained. Spectral analysis of the directions reveals a predominant 10 ky periodicity and no dominant looping direction.
    Description: I was supported for the early parts of this work by a NSF Graduate Fellowship. The Walvis Ridge study was supported by the WHOI Education Office and the Defense Advanced Research Projects Agency. The induction study was funded by the NSF under grants OCE74-12730 and OCE77-8633, and by the WHOI Ocean Industries Program. The paleomagnetic study was supported by NSF contracts OCE77-82255 and ÖCE79-19258.
    Keywords: Geomagnetism ; Electromagnetic fields ; Marine sediments ; Paleomagnetism ; Geophysics ; Marine geophysics ; Atlantis II (Ship : 1963-) Cruise AII94
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    Detailed studies of the structure, tectonics, near bottom magnetic anomalies and microearthquake seismicity of the Mid-Atlantic Ridge near 37°N (2006)
    Massachusetts Institute of Technology and Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-25
    Description: Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September, 1975
    Description: The Mid-Atlantic Ridge is one of the most well known and yet poorly understood spreading centers in the world. A detailed investigation of the Mid-Atlantic Ridge crest near 37°N (FAMOUS) was conducted using a deeply towed instrument package. The objective was to study the detailed structure and spreading history of the Mid-Atlantic Ridge median valley, to explore the roles of volcanism and faulting in the evolution of oceanic crust, and to study the morphologic expression and structural history of the zone of crustal accretion. In addition, microearthquake surveys were conducted using arrays of free-floating hydrophones. The most recent expression of the accreting plate boundary in the Famous Rift is an alternating series of linear central volcanoes and depressions 1.5 km wide which lie within the inner floor. This lineament is marked by a sharp maximum in crustal magnetization only 2-3 km wide. Magnetic studies indicate that over 90% of the extrusive volcanism occurs within the rift inner floor, a zone 1 to 12 km wide, while volcanism is extremely rare in the rift mountains. Volcanoes created in the inner floor are transported out on, block faults, becoming a lasting part of the topography. Magnetic anomaly transition widths vary from 1 km to 8 km with time and appear to reflect a bi-stable median valley structure. The valley has either a wide inner floor and narrow terraces, in which case the volcanic zone is wide and magnetic anomalies are poorly recorded (wide transition widths); or it has a narrow inner floor and wide terraces, the volcanic zone is then narrow and anomalies are clearly recorded (narrow transition widths). The median valley of any ridge segment varies between these two structures with time. At present the. Famous Rift has a narrow inner floor and volcanic zone (1-3 km) while the south Famous Rift is at the opposite end of the cycle with a wide inner floor and volcanic zone (10-12 km). Over 95% of the large scale (〉2 km) relief of the median valley is accounted for by normal faults dipping toward the valley axis. Normal faulting along fault planes dipping away from the valley begins just past the outer walls of the valley. Outward facing normal faulting accounts for most of the decay of median valley relief in the rift mountains while crustal tilting accounts for less than 20%. The pattern of normal faulting creates a broad, undulating horst and graben relief. Volcanic features contribute little to the large scale relief, but contribute to the short wavelength (〈2km) roughness of the topography. Spreading in the Famous area is highly asymmetric with rates twice as high to the east as to the west. At 1.7 m.y.b.p. the sense of asymmetry reverses in direction with spreading faster to the west, resulting in a gross symmetry when averaged through time. The change in spreading asymmetry occurred in less than 0.15 m.y. Structural studies indicate that the asymmetric spreading is accomplished through asymmetric crustal extension as well as asymmetric crustal accretion. Spreading in the Famous area is 17° oblique. Even on a fine scale there is no indication of readjustment to an orthogonal plate boundary system. Spreading has been stably oblique for at least 6 m.y., even through a change in spreading direction. Magnetic studies reveal that the deep DSDP hole at site 332 was drilled into a magnetic polarity transition, and may have sampled rocks which recorded the earth i s field behavior during a reversal. The presence of negative polarity crust within the Brunhes normal epoch in the inner floor has been determined, and may be due to old crust left behind or recording of a geomagnetic field event. Crustal magnetization decays to lie of its initial value in less than 0.6 m.y. The rapid decay may be facillitated by very intense crustal fracturing observed in the inner floor. Microearthquake, magnetic and structural studies indicate that both the spreading and transform plate boundaries are very narrow (1-2 km) and well-defined for short periods, but migrate over zones 10-20 km wide through time.
    Keywords: Submarine geology ; Geophysics ; Geomorphology ; Plate tectonics ; Knorr (Ship : 1970-) Cruise KN31
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    The value of harmful algal bloom predictions to the nearshore commercial shellfish fishery in the Gulf of Maine (2008)
    Details
    Publication Date: 2022-05-25
    Description: Author Posting. © Elsevier B.V., 2008. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Harmful Algae 7 (2008): 772-781, doi:10.1016/j.hal.2008.03.002.
    Description: In this study, we develop a framework for measuring the value of harmful algal bloom (HAB) predictions. The framework captures the effects of both private and public responses to HABs. Using data from the New England nearshore commercial shellfish fishery and impact estimates for a large-scale HAB event in 2005, we illustrate how the potential value of HAB forecasts may be estimated. The results of our study suggest that the long-term value of a HAB prediction and tracking system for the Gulf of Maine is sensitive to the frequency of HAB events, the accuracy of predictions, the choice of HAB impact measures, and the effectiveness of public and private responses.
    Description: This paper is a result of research funded in part by the National Oceanic and Atmospheric Administration’s Coastal Ocean Program under award #NA04NOS4780270 to the Woods Hole Oceanographic Institution.
    Keywords: Harmful algal bloom (HAB) ; Red tide ; Fisheries ; Value of information ; Forecast ; Marine scientific research
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    Type: Preprint
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  • 50
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    Mission d'enquête sur les populations de lamantins du Fleuve Sénégal: note de synthèse (2008)
    Programme Gestion Intégrée des Ressources Marines et Côtières, Dakar (Senegal)
    Details
    Publication Date: 2021-05-19
    Description: Du 1er au 25 octobre 2006, une enquête auprés des pêcheurs du fleuve Sénégal a été conduite afin de recueillir des informations sur les populations de lamantins notamment entre Podor et Bakel. entre autres résultats, la mission a pu rencontré beaucoup de communautés de pêcheurs et observé le Trichechus senegalensis (nom scientifique de l'espéce). Nous reproduisons quasiment in extenso la note de synthèse que le Chef de mission a bien voulu mettre à la disposition des lecteurs de DIISO
    Description: Published
    Description: lamantin; Trichechus senegalensis
    Keywords: Fisheries ; Surveys ; Surveys ; Fisheries
    Repository Name: AquaDocs
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    Plan directeur de développement forestier pêche et aquaculture continentales (2009)
    Details
    Publication Date: 2021-05-19
    Description: FAO, Rome (Italie);Ministère du Développement et de l'Hydraulique, Dakar (Sénégal)
    Description: Published
    Description: Plan de développement; fôret; pêche; milieu continental; aquaculture; pisciculture ; bilan ; facteur climatique; facteur hydrologique ; facteur socio économique; population rurale; ressources naturelles; poisson d'eau douce; ressources naturelles; gestion de l'environnement; technique de pêche; commercialisation ; consommation; projet de développement
    Keywords: Natural resources ; Fisheries ; Aquaculture ; Marketing ; Development projects ; Forests ; Climatic data ; Hydrology ; Inland water environment ; Aquatic environment ; Development potential ; Fisheries ; Aquaculture ; Marketing ; Development projects ; Fish consumption ; Hydrology ; Inland water environment ; Aquatic environment ; Forests ; Socioeconomic aspects ; Climatic data ; Natural resources ; Freshwater
    Repository Name: AquaDocs
    Type: Book
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    Aquatic Sciences and Fisheries Abstracts (ASFA) (2008)
    UNESCO
    Details
    Publication Date: 2021-05-19
    Description: Supported by IOC/IODE
    Description: Document available in English
    Description: ASFA
    Keywords: Fisheries ; Aquatic sciences ; Fisheries ; Abstracts
    Repository Name: AquaDocs
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    MapTool version 2 : user’s manual (2006)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: MapTool is an interactive computer program for the display of common marine geophysical data. At present, the program displays isolines, color-filled contours, navigation tracklines, and navigated scalar values in a variety of styles. A variety of map projections are supported. This document describes the basic requirements for running the MapTool program, for creating various displays, and generating hard copy output. The supported data file formats are described. All of the options, displays, menus, and windows are documented.
    Description: Funding was provided by the Office of Naval Research under Grant N00014-90-J-1621.
    Keywords: Mapping ; Geophysics ; Digital display software
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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    Experiments in a rotating source-sink annulus (2006)
    Massachusetts Institute of Technology and Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution August, 1971
    Description: An experimental investigation of the different flow regimes in a rotating source-sink annulus is described. Both the steady and transient velocities are measured over a large range of Ekman Reynolds number and Rossby number. Differing probe configurations are used to investigate the corresponding motions in spatially separated regions of the annulus. The steady interior circulation field exhibits a strong dependence on the imposed flux values. The non-dimensional circulation increases with radius over a certain radial range for higher system Rossby number. The observed profile changes are related to the existence of an unstable Ekman layer at some inner radial position. The thickness of the observed Ekman layers is typically 85% of the theoretical scale height. For higher local Reynolds number (ReL), the thickness is generally much smaller. The width of the sidewall boundary layer adjacent to the sink increases with larger system Rossby number. Adjacent to the source, the radial boundary layer is wider than that at the sink wall. Observed oscillations are separable into three types. For ReL 〉 50, instability waves are observed in the Ekman layer flow. In the same Re range, inertial oscillations are detected in the interior region of the annulus. The observed inertial wave frequency at differing radial positions is explained by incorporating Doppler shift corrections and taking account of the steady circulation profiles. The radial wavelength of the inertial waves corresponds to the length of the Class A Ekman layer instabi1ity. For small values of Re and local Rossby number, an axisymmetric disturbance, with a characteristic frequency slightly greater than therotation rate, is observed at the outer radial positions.
    Keywords: Geophysics ; Fluid models
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    Type: Thesis
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    Geophysical fluid dynamics : notes on the 1960 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 60-46, series later renamed WHOI-.
    Description: National Science Foundation under Research Grant NSF 12556
    Keywords: Geophysics ; Fluid dynamics
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    Type: Technical Report
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    1982 summer study program in geophysical fluid dynamics : particle motions in fluids (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: The (Lagrangian) motion of a fluid particle was contrasted with the (Eulerian) flow past a fixed point in space during this twenty-fourth summer program in geophysical fluid dynamics at the Woods Hole Oceanographic Institution.
    Description: Office of Naval Research under Contract N00014-82-G-0079 and National Science Foundation Grant MCS-82-00450. Partial support from the Center for Analysis of Marine Systems (CAMS) at Woods Hole Oceanographic Institution.
    Keywords: Geophysics ; Fluid dynamics
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    The 1960 Summer Program of Theoretical Studies in Geophysical Fluid Dynamics (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 60-46, series later renamed WHOI-.
    Description: This ten-week work-study-discussion program is centered about a formal course called Geophysical Fluid Dynamics. Eight participants are selected from graduate and postgraduate applicants. In the discussions emphasis is placed on the formulation of tractable research problems in geophysics. The participants are encouraged to work on satisfactory problems thus formulated and to continue with their research after returning to their respective institutions.
    Description: National Science Foundation under Research Grant NSF 12556
    Keywords: Geophysics ; Fluid models ; Fluid dynamics
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    The 1959 Summer Program of Theoretical Studies in Geophysical Fluid Dynamics (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 59-53, series later renamed WHOI-.
    Description: This ten-week work-study-discussion program is centered about a formal course called Geophysical Fluid Dynamics. Eight participants are selected from graduate and postgraduate applicants. In the discussions emphasis is placed on the formulation of tractable research problems in geophysics. The participants are encouraged to work on satisfactory problems thus formulated and to continue with their research after returning to their respective institutions.
    Description: National Science Foundation under Research Grant NSF G-9125
    Keywords: Fluid dynamics ; Geophysics ; Fluid models
    Repository Name: Woods Hole Open Access Server
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    The New England fishing industry : a basis for management (2007)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Fish and fishermen appear to be in a serious decline in New England. The haddock are overfished, inshore herring stocks are depleted, yellowtail flounder and lobster are scarce. The popular image is of grizzled fishermen, their boats chipped, scarred, old-fashioned hulks of wood tied up two and three abreast along the rotting wharves and piers of New England's depressed port towns. In this research project, we wanted to determine the state of the New England fishing industry and to propose acceptable methods for the management of the fishery. During our early discussions with the fishing industry people, we mentioned that we were interested in limited effort programs as they might be applied to New England fishermen. We carefully, and probably tediously, explained the "theory of limited effort" and we were generally thought to be daft. We were told we had things backwards--that the fishing industry needed more fish, more men, more boats - and that the way to accomplish this was to get a 200-mile fishing limit and kick the foreigners out. One of these wishes has come true - in the spring of 1976, P.L. 94-265 established a 200-mile fishing zone off the United States, with regional management councils to make management plans and allocate the resources first to United States fishermen, with surpluses to foreign fishermen.
    Description: Prepared with funds from the Pew Memorial Trust and by the Department of Commerce, NOAA Office of Sea Grant under Grant #04-5-158-8 and Grant #04-6-158-44106, and the Institution's Marine Policy and Ocean Management Program.
    Keywords: Fisheries ; Management
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    Geophysical fluid dynamics : notes on the 1961 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference no. 61-39, series later renamed WHOI-.
    Description: National Science Foundation under Research Grant NSF G-16973
    Keywords: Geophysics ; Fluid models ; Fluid dynamics
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    Type: Technical Report
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    1980 summer study program in geophysical fluid dynamics : coherent features in geophysical flows (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Four principal lecturers shored the task of presenting the subject "Coherent Features in Geophysical Flows" to the participants of the twenty-second geophysical fluid dynamics summer program. Glenn Flierl introduced the topic and the Kortweg-de Vries equation via a model of finite amplitude motions on the beta plane. He extended the analysis to more complex flows in the ocean and the atmosphere and in the process treated motions of very large amplitude. Larry Redekopp's three lectures summarized an extensive body of the mathematical literature on coherent features. Andrew Ingersoll focussed on the many fascinating features in Jupiter's atmosphere. Joseph Keller supplemented an interesting summary of laboratory observations with suggestive models for treating the flows.
    Description: Office of Naval Research under Contract N00014-79-C-0671
    Keywords: Geophysics ; Fluid dynamics
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    Summer study program in geophysical fluid dynamics : dynamic differentation (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Those attending G.F.D. 1984 were introduced to the novel topic of Geological Fluid Mechanics by our Principal Lecturer, Herbert Huppert. He presented his studies both as a discipline with recent fascinating successes, and as a challenge to his listeners to further isolate mathematically tractable examples of these multi-component flows. Geological Fluid Mechanics has been the responsible process for the formation and modification of most of the geological objects studied today. The dynamics of fluid mixtures in magma chambers, the changing fluid boundary conditions and composition during selective crystallization of parts of the melt, and the separation of fluid fractions of different density and viscosity all represent areas in which quantitative theories are currently being tested. However, equally many areas, including convection mechanisms in the Earth's core and quantitative predictions for upper mantle motion, resist simplistic modeling.
    Description: Office of Naval Research under contract N00014-82-G-0079 and the National Science Foundation under Grant MCS-82-800450. Partial support acknowledged from the Center for Anatysis of Marine Systems (CAMS) at the Woods Hole Oceanographic Institution. CAMS is supported by The Exxon Foundation, Mobil Foundation, Inc., The Ambrose Monell Foundation, The R. R. Mellon Family Foundation., the Atlantic Richfield Foundation, and by an anonymous donor.
    Keywords: Geophysics ; Fluid dynamics
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    Summer study program in geophysical fluid dynamics : chaos (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: The explosive growth of dynamieal systems theory in the past two decades stems in large part from the realization that it is applicable to many natural phenomena. Indeed, much o f the theoretical development has been sparked by numerical and laboratory experiments which exhibit ordered sequences of behavior that call for a general framework of interpretation We have been fortunate this summer to have had in residence both pioneers and developers of dynamical systems theory and its applications to fluid mechanics. Several recent texts contain the basic principles that Ed Spiegel used as a springboard for five lectures in which he exposed us to elementary examples of bifurcation and chaos, to symmetry breaking, normal forms and temporal and spatial disorder, as well as to pertinent fluid mechanical and astrophysical phenomena. Yves Pomeau continued the development with an elegant summary of different types of intermittency . Stephan Fauve agree to write up his impressive seminars on phase instability and turbulence as an extension of the lecture series. Many of the remaining seminars introduced new concepts in the theory, some with specific examples, others via mathematical development, and still others through ways of interpreting the data that emerge from calculations and experiments. As an outstanding example of this, Albert Libchaber has demonstrated the fascinating correspondence between the frequencies observed in one of his recent fluid mechanics experiments and results from number theory relating the Fibonacci series to the golden mean.
    Description: Office of Naval Research under contract NO0014-82-6-0079 and the National Science Foundation under Grants MCS-82-000450 and DMS-85-04166.
    Keywords: Geophysics ; Fluid dynamics
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    Notes on the 1963 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 63-34, series later renamed WHOI-.
    Description: This year's lectures by Derek Moore form a detailed report of investigations on the fluid motion caused by the motion of a body in a homogeneous rotating fluid. The emphasis has been on the significance of the Taylor-Proudman theorem and the departure of the fluid from the behavior described by the Taylor-Proudman theorem. The plan was to probe deeply into one problem and thereby acquire information in a wider area of study of rotating fluids.
    Description: National Science Foundation under Research Grant NSF GE-15l8
    Keywords: Geophysics
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    Notes on the 1966 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 66-46, series later renamed WHOI-.
    Description: The lecturers, Drs. Howard, Stern and Veronis, have introduced the participants to several aspects of geophysical fluid dynamics at the frontiers of current research. Their choice of topic and its development was to serve, on one hand, a pedagogic function and, on the other, to suggest a variety of allied unsolved problems.
    Description: National Science Foundation
    Keywords: Geophysics
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    Notes on the 1965 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 65-51, series later renamed WHOI-.
    Description: National Science Foundation
    Keywords: Geophysics
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    Notes on the 1968 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 68-72, series later renamed WHOI-.
    Description: The general circulation of the oceans was the topic of concentration for the 1968 WHOI Summer Program in Geophysical Fluid Dynamics
    Description: National Science Foundation
    Keywords: Ocean circulation ; Geophysics ; Fluid models
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    Notes on the 1969 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 69-41, series later renamed WHOI-.
    Description: The principal theme of this eleventh Summer Program has been Astrophysical Fluid Dynamics. As in the past, we have explored the region of overlap in technique and theory of our summer theme and other aspects of Fluid Dynamics. An interesting example of this overlap is the application of the physics of salt-finger instability, a significant oceanographic process, to instabilities due to differential rotation in the sun, a critical problem in stellar evolution.
    Description: National Science Foundation
    Keywords: Geophysics ; Ocean circulation
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    Notes on the 1975 summer study program in geophysical fluid dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: The central topic of this seventeenth Geophysical Fluid Dynamics program was fluid motion in the earth's mantle and core. Our principal lecturer, Dan McKenzie, first addressed himself to the task of separating solid behavior of the mantle from fluid behavior. When the level of protest diminished Dan advanced to his numerical studies of mantle convection. The relationship of these numerical experiments and geophysical observables was impressive indeed for this first generation of mantle modeling. Intertwined seminars from P. Molnar, B. Parsons, J. Sclater and T. Atwater exposed us to data gathering and its rationale at the frontiers of geophysics. The fluid properties of the core may be less suspect than those of the mantle, but how and why the core fluid moves is still a mystery. Our associate principal lecturer, Fritz Busse, discussed the geomagnetic evidence for core motion. Then moving quickly to the more abstract problems of model geodynamos, Fritz described in five lectures his achievement of a first complete dynamic dynamo driven by convection.
    Description: National Science Foundation
    Keywords: Geophysics
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    Notes on the 1978 summer study program on dynamo models of geomagnetism in geophysical fluid dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: This was the twentieth Geophysical Fluid Dynamics program at Woods Hole. Stephen Childress of the Courant Institute was our principal lecturer. Dynamo theory, with all its interdisciplinary facets was our central theme. Geomagnetism and the solar magnetic cycle were brought closer to comprehension, yet none claimed a detailed predictive theory was near at hand. Perhaps J. Keller's lecture, entitled "Smooth equations for rough problems", best characterized the nature of these studies. Even then, the smooth equations are quite nonlinear, with Finite-amplitude magnetic solutions yet to be explored. Lectures intertwined with those of Childress exposed us to topics beside and outside his emphasis on a convective geodynamo.
    Description: Office of Naval Research under Contract N00014-78-G0072
    Keywords: Geophysics ; Fluid dynamics
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    Type: Technical Report
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    Enceladus' south polar sea (2007)
    Details
    Publication Date: 2022-05-26
    Description: Author Posting. © Elsevier B.V., 2007. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Icarus 189: 72-82, doi:10.1016/j.icarus.2007.01.010.
    Description: Recent observations of the south pole of Saturn’s moon Enceladus by the Cassini spacecraft have revealed an active world, powered by internal heat. In this paper, we propose that localized subsurface melting on Enceladus has produced an internal south polar sea. Evidence for this localized sea comes from the shape of Enceladus, which does not match a differentiated body at its current orbital position. We show that melting induced by the observed heat flow at the south pole produces a large enough pit to match the shape of Enceladus with a differentiated rock and ice interior. Numerical modeling of melting and ice flow shows that the sea produced beneath the south pole is stable against inflow of ductile ice from its surroundings for the duration of the heating. The shape modification due to melting also produces a negative degree-two gravity anomaly, which can reorient the spin axis of Enceladus in order to place the sea at the pole.
    Keywords: Enceladus ; Satellites ; Shapes ; Interiors ; Geophysics
    Repository Name: Woods Hole Open Access Server
    Type: Preprint
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    Notes on the 1967 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution (2008)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 67-54
    Description: In former years some of the research and seminars of the WHOI Geophysical Fluid Dynamics program was concerned with determining the interior structure and motions of stars and galaxies. This year we have focused our attention downward rather than upward and have attempted to learn some things about the earth's interior. Freeman Gilbert's lectures on the inverse problem in seismology discuss one aspect of the geophysicist's attempts to infer some things about the earth's interior from the evidence which is available at the surface. Paul Robert presented a survey of the difference attempts to attribute the earth's magnetic field to dynamo action. Willem Malkus, Raymond Hide and Stephen Childress supplemented Roberts' lectures with seminars. As students of our physical environment all of us were entertained and stimulated by this introduction to the netherworld.
    Description: National Science Foundation
    Keywords: Geophysics
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    The 1961 Summer Program of Theoretical Studies in Geophysical Fluid Dynamics (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 61-39, series later renamed WHOI-.
    Description: This ten-week work-study-discussion program was centered about a formal course called Geophysical Fluid Dynamics. Sixteen participants were selected from graduate and postgraduate applicants. In the discussions emphasis was placed on the formulation of tractable research problems in geophysics. The participants were encouraged to work on satisfactory problems thus formulated and to continue with their research after returning to their respective institutions.
    Description: National Science Foundation under Research Grant NSF G-16973
    Keywords: Geophysics ; Fluid models ; Fluid dynamics
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    Type: Technical Report
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    Notes on the 1962 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 62-33, series later renamed WHOI-.
    Description: National Science Foundation under Research Grant NSF22332
    Keywords: Geophysics ; Fluid dynamics
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    The 1962 Summer Program in Geophysical Fluid Dynamics (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 62-38, series later renamed WHOI-.
    Description: Includes the preprint "Mixing-length Analyses of Turbulent Thermal Convection at Arbitrary Prandtl Number" - R. Kraichnan (1962). N.Y.U. Research Report No. HSN-6.
    Description: National Science Foundation under Research Grant NSF22332
    Keywords: Geophysics ; Fluid dynamics
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    Lake Kivu expedition : geophysics, hydrography, sedimentology (preliminary report) (2008)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: In March 1971, seven members of the Woods Hole Oceanographic Institution were engaged in a multidisciplinary study of Lake Kivu. This expedition represents part of a long-range program concerned with the structural and hydrographical settings of the East African Rift Lakes and their relationships to the Red Sea and the Gulf of Aden Rifts. The program started in May 1963 with a geophysical study on Lake Malawi (von Herzen and Vacquier, 1967). Several expeditions of our Institution into the Red Sea and Gulf of Aden area in 1964, 1965 and 1966 (Degens and Ross, 1969) provided detailed geological information on the "northern" extension of the East African Rift. And finally our study of last year on Lake Tanganyika c1osed a major gap in the program; it allowed us to out1ine a model on the evolution of a rift which starts with (i) bulging of the earth's crust, (ii) block-faulting, (iii) volcanism and hydrothermal activity, and which has its final stage in (iv) sea floor spreading (Degens et al. 1971). In the case of Lake Tanganyika, only the second stage of this evolution series has been reached, i.e. block-faulting. In contrast, the Red Sea and the Gulf of Aden had already evolved to active sea floor spreading, almost 25 million years ago. Somewhere along the line between Lake Tanganyika and the Gulf of Aden must lie the "missing link" of this evolution series. Lake Kivu, almost 100 miles to the north of Lake Tanganyika is situated at the highest point of the Rift Valley and is surrounded by active volcanoes and geothermal springs. As recently as 1944, lava flows reached the lake shore. This lake was therefore, a natural choice to test our hypothesis on the origin and development of rifts. Furthermore, the occurrence of large quantities of dissolved gases, e.g., CO2 and methane, represented an interesting geochemical phenomenon worthwhile to investigate.
    Description: Supported by the National Science Foundation with Grants GA 19262, GB 20956, and GU 3927; grants from the Petroleum Research Fund of the American Chemical Society PRF#1943A2; and by private research funds of the Woods Hole Oceanographic Institution.
    Keywords: Geophysics ; Hydrography ; Sedimentology
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    Notes on the 1964 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 64-46, series later renamed WHOI-.
    Description: Two distinctive features of large-scale geophysical flows are that they are dominated by the earth's rotation and that they are turbulent. This year's lecture program was an exploration of recent achievements in the study of, first, the simplest examples of turbulence, and second, the rotational constraint.
    Description: National Science Foundation and Travelers' Research Center, Inc
    Keywords: Geophysics
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    Notes on the 1973 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Nonlinear wave interactions formed the theme of the fifteenth summer program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution. Owen Phillips was our principal lecturer on this subject, He chose to emphasize interactions among small numbers of discrete wave modes, including both internal and surface gravity waves in his discussions. His lectures provided a stimulating introduction to this important subject. Phillips' lectures were supplemented by a lecture by William Simmons on experiments with interacting internal waves, and a lecture by Carl Wunsch on internal waves in the ocean. Later in the summer, Wunsch gave us a lecture series on practical time-series analysis.
    Description: We thank the National Science Foundation for their continuing support.
    Keywords: Geophysics ; Fluid models
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    Notes on the 1972 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: The effect of gravity on fluids of varying density is of fundamental importance in natural flows. This subject formed the topic of concentration for the fourteenth summer program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution. We had the good fortune to hear Stewart Turner lecture on stratified flows just after he had completed the manuscript for his book on the subject. Turner chose to emphasize nonlinear and turbulent aspects of stratified flows and, therefore, had to give up the deductive approach in favor of treatments based on dimensional analysis and similarity arguments. This summary of the many experimental studies of these flows increased our awareness of the fascinating variety of phenomena in which stratification plays so vital a role.
    Description: Supported by the Division of Fluid Dynamics, Oceanography and Applied Mathematics of the Office of Naval Research.
    Keywords: Geophysics
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    Notes on the 1974 summer study program in geophysical fluid dynamics at the Woods Hole Oceanographic Institution (2009)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: This year the central topic was the general circulation of the oceans. Some of the basic ideas used in wind-driven and thermohaline studies were presented in the introductory course of lectures and simple models that have guided our thinking in the development of the topic were discussed. As part of the introductory lectures Peter Niiler developed a model of the mixed layer, exploring the reasoning and the parameterization behind the theories of this important boundary region at the surface of the ocean. Dennis Moore gave a careful account of transient flows in equatorial regions and showed how dynamical conditions on the eastern and western boundaries are satisfied by a superposition of planetary, Kelvin and Yanai waves. Peter Rhines concluded the series with a discussion of topographically induced low frequency motions. At the request of the students Joseph B. Keller gave a lecture on "Solution of Partial Differential Equations by Ray Theory".
    Description: National Science Foundation
    Keywords: Geophysics
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  • 81
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    Die Elementarschadenversicherung in der Bundesrepublik Deutschland als Element der finanziellen Risikovorsorge gegen Naturereignisse : Diskussion staatlicher Regulierungsoptionen am Fallbeispiel der Hochwasser 2002 unter Berücksichtigung versicherungswirtschaftlicher Präferenzen (Dissertation, Universität Hannover) (2006)
    Frankfurt am Main : Lang
    In:  Schriften zur politischen Ökonomik, evolutorische und ökologische Aspekte, No. 4
    Details
    Publication Date: 2006
    Keywords: Elementarschadenversicherung ; Natural disaster insurance ; Versicherungspflicht ; Mandatory insurance ; Katastrophenhilfe ; Emergency aid ; Marktversagen ; Market failure ; Überschwemmung ; Flood ; Theorie ; Theory ; Deutschland ; Germany ; Hochschulschrift ; Thesis ; Dissertation
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    BIBLIOGRAPHY FLOODS GERMANY
  • 82
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    Initiation of plate boundary slip in the Nankai Trough off the Muroto peninsula, southwest Japan (2005)
    In:  Geophys. Res. Lett., Taipei, EGS, vol. 32, no. 12, pp. 1474-1482, pp. L12306, (ISSN: 1340-4202)
    Details
    Publication Date: 2005
    Keywords: Subduction zone ; Plate tectonics ; decollement ; Geol. aspects ; Ocean Drilling Program ; GRL ; 0500 ; Computational ; Geophysics ; (3200, ; 3252, ; 7833) ; 0900 ; Exploration ; Geophysics ; 3000 ; Marine ; Geology ; and ; Geophysics ; 8000 ; Structural ; Geology ; 8100 ; Tectonophysics
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  • 83
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    Zusammenhang zwischen Klimawandel, Ozon und UV-Strahlung (2008)
    In:  Kappas, M. (Hrsg): Klimawandel und Hautkrebs, Interdisziplinäre Projektgruppe CLIMAderm, Stuttgart, ibidem-Verlag, 25-51
    Details
    Publication Date: 2008
    Keywords: Deutschland ; Umweltmedizin ; UV-Strahlung
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  • 84
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    Klimawandel und Gesundheit: Neuen Aeroallergenen auf der Spur (2009)
    In:  In: BfS/BfR/RKI/UBA (Hrsg.): Klimawandel und Gesundheit. UMID – UmweltMedizinischerInformationsDienst, Ausgabe 3 (Themenheft), Dezember 2009, 13-16
    Details
    Publication Date: 2009
    Description: Beispiele Ambrosia, Eichenprozessionsspinner KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Phänologie
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  • 85
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    Klimawandel: Ausbreitung von Ambrosien und die damit verbundenen Gesundheitsrisiken (2009)
    In:  In: BfS/BfR/RKI/UBA (Hrsg.): Klimawandel und Gesundheit. UMID – UmweltMedizinischerInformationsDienst, Ausgabe 3 (Themenheft), Dezember 2009, 17-20
    Details
    Publication Date: 2009
    Description: ausgedehnte Ambrosiaareale auch in der Lausitz und dem Berliner Raum KATASTER-BESCHREIBUNG: Neben Sensibilisierung gegen Ambrosia auch Kreuzreationen bei Sensibilisierung gegen Beifuß möglich KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Phänologie
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  • 86
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    Globale Klimaerwärmung und zunehmender Fernreiseverkehr - Ursachen für die Entstehung malariogener Potentiale in Mitteleuropa? Teil I (2006)
    In:  Der Mikrobiologe 16, 178-181
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    Publication Date: 2006
    Description: Autochthone Malaria in Deutschland, Historischer Abriss, Nachkriegsmalaria, Aktuelle malariaepidemiologische Situation KATASTER-BESCHREIBUNG: klimatische Bedingungen ermöglichen Ausreifung von Sporozoiten in heimischen Anophelesmücken, historisch erwiesen KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Infektionskrankheiten
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  • 87
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    Globale Klimaerwärmung und zunehmender Fernreiseverkehr - Ursachen für die Entstehung malariogener Potentiale in Mitteleuropa? Teil II (2006)
    In:  Der Mikrobiologe 16, 212-216
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    Publication Date: 2006
    Description: Herleitung einer Formel zur Berechnung der Plasmodium-Sporozoitenreifungszeit KATASTER-BESCHREIBUNG: Ausreifung von Pl. vivax- und Pl. falciparum-Sporozoiten im deutschen Raum möglich, Zustandekommen endemischer Malariaerregerübertragung bzw. Entstehung epidemiologisch wirksamer malariogener Potentiale dabei gebunden an das Vorhandensein von Gametozytenträgern und Überträgermücken KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Infektionskrankheiten
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  • 88
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    Changes in the seasonality of mortality in Germany from 1946 to 1995: the role of temperature (1998)
    In:  International Journal of Biometeorology 42, 84-88
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    Publication Date: 1998
    Description: Abnahme des thermischen Einflusses auf den saisonalen Verlauf der Mortalität KATASTER-BESCHREIBUNG: sich verbessernde Bedingungen im Gesundheitswesen und bei der Innenraumtemperatur bedingen Abnahme des thermischen Einflusses insb. für Mortalitätszunahme bei niedrigen Temperaturen KATASTER-DETAIL:
    Keywords: Deutschland ; 1946-1995 ; Umweltmedizin ; Temperatur
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  • 89
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    Die Auswirkungen des Klimawandels. Welche neuen Infektionskrankheiten und gesundheitlichen Probleme sind zu erwarten? (2009)
    In:  Bundesgesundheitsblatt 2009, 52, 699-714
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    Publication Date: 2009
    Description: einheimische und importierte  vektorassoziierte  Infektionen, Gastrointestinale  Infektionskrankheiten KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Infektionskrankheiten
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  • 90
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    Klimawandel in Deutschland. Vulnerabilität und Anpassungsstrategien klimasensitiver Systeme, Auswirkungen des Globalen Wandels und Anpassungsstrategien in ausgewählten klimasensitiven Systemen, Gesundheit (2005)
    In:  Climate Change, Vol. 08, Umweltbundesamt, Dessau, 122-136
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    Publication Date: 2005
    Keywords: Deutschland ; Umweltmedizin
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  • 91
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    Kosten des Klimawandels. Die Wirkung steigender Temperaturen auf Gesundheit und Leistungsfähigkeit. Eine Studie im Auftrag des WWF Deutschland Frankfurt (2007)
    In:  Institut für Weltwirtschaft, Kiel
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    Publication Date: 2007
    Description: Studie zu einer prognostizierten Anzahl von Tagen mit Wärme- und mit Kältestress, basierend auf Klimaszenarien für den Zeitraum 2071 bis 2100 KATASTER-BESCHREIBUNG: Prognose: größere Zahl an Todesfällen durch Hitze im Süden gegenüber dem Norden Deutschlands und zugleich größerer Rückgang der Todesfälle durch Kälte im Norden, Anstieg der Todesopferzahl durch zunehmende Hitze insgesamt größer als Rückgang der Opferzahl durch weniger Kälte KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Temperatur
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  • 92
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    Beeinflusst der Klimawandel das Auftreten von Haut- und Allergiekrankheiten in Deutschland? (2008)
    In:  JDDG - Journal der Deutschen Dermatologischen Gesellschaft, 2008, 6(8), 632-639
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    Publication Date: 2008
    Description: Klärung der Studienlage zum potentiellen Einfluss des Klimawandels auf die Prävalenz von Haut- und Allergieerkrankungen in Deutschland KATASTER-BESCHREIBUNG: klimabedingte Veränderungen vor allem bei allergischen Erkrankungen, Hautkrebs und einzelnen erregerbedingten Dermatosen KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Phänologie ; UV-Strahlung
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  • 93
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    GesundheitlicheAuswirkungen von klimabeeinflussten Luftverunreinigungen (2008)
    In:  In: Lozán, J.L.; Graßl, H.; Jendritzky, G.; Karbe, L.; Reise, K. (Hrsg.) Warnsignal Klima: Gesundheitsrisiken. Gefahren für Pflanzen, Tiere und Menschen.Wissenschaftliche Auswertungen, Hamburg, 121-125
    Details
    Publication Date: 2008
    Description: Fallbeispiel Sommer 2003 KATASTER-BESCHREIBUNG: Zunahme von Ozon in der Troposphäre bei stationären sommerlichen Hochdruckwetterlagen mit hohen Lufttemperaturen und intensiver Sonneneinstrahlung, indirekt Zunahme von Feinstaub bei Hitze (〉30°C) und Ozonbelastung (〉200 Mikrogramm pro Kubikmeter) KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Luftverunreinigungen
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  • 94
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    Klimawandel und Hautkrebs – Klimafolgenforschung in 21. Jahrhundert (2008)
    In:  Kappas, M. (Hrsg): Klimawandel und Hautkrebs, Interdisziplinäre Projektgruppe CLIMAderm, Stuttgart, ibidem-Verlag, 1-11
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    Publication Date: 2008
    Description: UV-Strahlungsbeeinflussende Faktoren Azimutwinkel, Bewölkung, Aerosole, stratosphärisches Ozon, biologische Wirkung in Abhängigkeit vom Hauttyp und Sensibilisierung (Jahreszeit) KATASTER-BESCHREIBUNG: Einfluss klimatischer Veränderungen auf die Häufigkeit von Hautkrebserkrankungen sehr wahrscheinlich, bei vermutlich hoher Bedeutung des (thermisch motivierten) Expositionsverhaltens KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; UV-Strahlung
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  • 95
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    Surveillance of vector-borne diseases in Germany: Trends and challenges in the view of disease emergence and climate change. (2008)
    In:  Parasitol Res, 103, 11-17
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    Publication Date: 2008
    Description: zeitliche Trends und geografische Ursprünge der Vektor-übertragenen Krankheiten in Deutschland im Hinblick auf Stärken der bestehenden Krankheitsüberwachung für Hantavirus Infektion (endemisch in Deutschland), Chikungunya-Fieber (vor kurzem Schwellenländer in Europa) und Dengue-Fieber (importiert aus tropischen Regionen) KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Deutschland ; 2001-2007 ; Umweltmedizin ; Infektionskrankheiten
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  • 96
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    Neue Krankheitserreger und ihre Überträger: Klimawandel könnte Gesundheitsgefahren in Deutschland zur Folge haben (2009)
    In:  In: BfS/BfR/RKI/UBA (Hrsg.): Klimawandel und Gesundheit. UMID – UmweltMedizinischerInformationsDienst, Ausgabe 3 (Themenheft), Dezember 2009, 21-23
    Details
    Publication Date: 2009
    Description: weltweite Verbreitung der Asiatischen Tigermücke Aedes albopictus innerhalb der letzten zwei Jahrzehnte im Zusammenhang mit Chikungunya-Ausbruch im Sommer 2007 in Italien KATASTER-BESCHREIBUNG: Transportwege der Globalisierung als wesentlicher Faktor neben Klimaänderungen KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Infektionskrankheiten
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  • 97
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    Solare UV-Strahlung im Zeichen des erwarteten Klimawandels (2009)
    In:  In: BfS/BfR/RKI/UBA (Hrsg.): Klimawandel und Gesundheit. UMID – UmweltMedizinischerInformationsDienst, Ausgabe 3 (Themenheft), Dezember 2009, 24-28
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    Publication Date: 2009
    Description: Gesundheitliche Bewertung ultravioletter Strahlung KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; UV-Strahlung
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  • 98
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    Costs of climate change: The effects of rising temperatures on health and productivity in Germany (2008)
    In:  Ecological Economics 68 (1 – 2), 381–393
    Details
    Publication Date: 2008
    Description: Studie zu einer prognostizierten Anzahl von Tagen mit Wärme- und mit Kältestress, basierend auf Klimaszenarien für den Zeitraum 2071 bis 2100 KATASTER-BESCHREIBUNG: schätzungsweise durchschnittlicher Anstieg der Zahl der wärmeinduzierten Krankheitsfälle um einen Faktor von mehr als 3 und für hitzebedingte Krankenhausaufenthalte 6, Verlust von 0,1% bis 0.5% des BIP durch krankheitbedingten Arbeitsausfall KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin
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  • 99
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    Klimawandel und Allergie (2008)
    In:  In: Gostomzyk, J.G.; Enke, M. (Hrsg.): Globaler Klimawandel und Gesundheit. Schriftenreihe der Landeszentrale für Gesundheit in Bayern, Band 19, München, 2008, 75 – 85
    Details
    Publication Date: 2008
    Description: Pollensaison, -auftreten und -arten, sowie Veränderungen der Allergenität von Pollen unter Klimawandel KATASTER-BESCHREIBUNG: zunehmende Polysensibilisierungen gegenüber Inhalationsallergien durch zunehmend invasives Traubenkraut Ambrosia artemisiifolia KATASTER-DETAIL:
    Keywords: Deutschland ; Umweltmedizin ; Phänologie
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    Sustainability. Resolving mismatches in U.S. ocean governance (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-08-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crowder, L B -- Osherenko, G -- Young, O R -- Airame, S -- Norse, E A -- Baron, N -- Day, J C -- Douvere, F -- Ehler, C N -- Halpern, B S -- Langdon, S J -- McLeod, K L -- Ogden, J C -- Peach, R E -- Rosenberg, A A -- Wilson, J A -- New York, N.Y. -- Science. 2006 Aug 4;313(5787):617-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Marine Conservation, Nicholas School of the Environment and Earth Sciences, Duke University Marine Laboratory, Beaufort, NC 28516, USA. lcrowder@duke.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16888124" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biodiversity ; *Conservation of Natural Resources ; *Ecosystem ; Environment ; Fisheries ; Fishes ; *Government Regulation ; *Marine Biology ; Oceans and Seas ; Population Dynamics ; Seawater ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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