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  • Seychelles  (12)
  • Artisanal fishing  (6)
  • Fisheries
  • Fishery economics
  • Inorganic Chemistry
  • Seismology
  • Victoria: Seychelles Fishing Authority  (17)
  • Woods Hole Oceanographic Institution  (3)
  • Academic Press
  • Alexandria: National Institute of Oceanography and Fisheries
  • Am. Meteor. Soc.
  • 2005-2009  (22)
  • 1950-1954  (1)
Collection
Years
Year
  • 1
    Publication Date: 2022-05-25
    Description: This report describes a preliminary analysis of borehole seismic data to determine VLF/Sub-bottom Seismic Noise in the Atlantic and the preliminary results of finite difference modelling for a Cape Fear environment. Noise levels were not a simple function of depth and there are indications that noise levels may depend on local geology about a given receiver position and/or on clamping. Coherency of the noise was generally poor (〈0.8) and was independent of depth. There is no evidence for distinct polarizations or directionality of the noise. The lowest determined value for ambient noise power on the vertical component was 10-4 nm2/Hz in the frequency range from 5-50 Hz. The better clamped horizontal component had comparable power values. In conclusion, although the drill ship was on the site and drill pipe was in the hole, analysis of the data for a large number of windows can provide meaningful upper bounds on the ambient noise levels in the upper crust.
    Description: Prepared for the Naval Ocean Research and Development Activity as the final report for Contract Purchase Order No. N62306-86-l4-7589
    Keywords: Ambient sounds ; Seismology
    Repository Name: Woods Hole Open Access Server
    Type: Working Paper
    Format: application/pdf
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  • 2
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    Woods Hole Oceanographic Institution
    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
    Format: application/pdf
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  • 3
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    Woods Hole Oceanographic Institution
    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
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 4
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    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: Published
    Keywords: Seychelles ; Purse seining ; Statistics ; Tuna ; Longlining ; Tuna fisheries ; Purse seines
    Repository Name: AquaDocs
    Type: Book , Non-Refereed
    Format: 849107 bytes
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    Format: 40pp.
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  • 5
    Publication Date: 2021-05-19
    Description: From 1986 to 1991, observers on board tuna purse-seiners based in Seychelles allow analysis of data such as oceanographic parameters, aspects of tuna schools and their associated sightings, as well as fishing characteristics (success rate, catches, cpue, species composition, duration of fishing sets). Performances of the four concerned countries (France, Spain, Japan, USSR) are compared.
    Description: Published
    Keywords: Fishing effort ; Katsuwonus pelamis ; Thunnus obesus ; Thunnus albacares ; Purse seines ; Seychelles ; Catch composition ; Fishery biology ; Catch composition ; Catch/effort ; Environments ; Fishery biology
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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  • 6
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    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: Published
    Keywords: Economic contribution ; Fisheries development ; Artisanal fishing ; International cooperation ; Tuna fisheries ; Fishery development ; Fishery industry ; Harbours ; Aquaculture
    Repository Name: AquaDocs
    Type: Book , Non-Refereed
    Format: 1150583 bytes
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    Format: 66
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  • 7
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    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: Published
    Keywords: Seychelles ; Annual reports ; Industrial fish ; Fishery institutions
    Repository Name: AquaDocs
    Type: Book
    Format: 1162291 bytes
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    Format: 44
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  • 8
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    Victoria: Seychelles Fishing Authority
    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
    Format: 186058 bytes
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  • 9
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    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: Shark species, both oceanic and coastal, are very common to Seychelle waters. In the past, however, the demand for shark and shark products has always been very erratic. The ever-increasing international concern for the species and potential conflicts between fishermen and conservation groups has highlighted the issue. In the Seychelles, the shark are caught by gillnets in inshore waters and by hook-and-line and purse seine offshore. Until very recently there were no regulations controlling the shark fishery, but, partly in response to initiatives by a local conservation group, fishing for sharks with nets has been banned since 1 August 1998. A review is provided of the present situation of the fishery whilst underscoring the difficulties of formulating a Management Plan based on the limited information available. The text of Chapter 82 of the Fisheries Act of 1986 is included as an appendix to the document.
    Description: Published
    Keywords: Seychelles ; Fishery management ; Legislation ; Sharks ; Fishery management ; Fishery regulations ; Legislation ; Shark fisheries
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 1084020 bytes
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  • 10
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    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: This report reviews the spiny lobster fishery on the Mahe Plateau during the 1994 - 1995 fishing season. Following the recommendations made after the 1992 fishing season, the fishery was reopened in 1993 for two months, November and December. The monitoring programme set up in 1992 was continued to gather more information on the spiny lobster stocks so as to improve the management of this resource around the Mahe Plateau. A total of 33 licenses were issued (compared to 28 in 1993); 25 on Mahe, 2 on Praslin and 6 on La Digue. A licensed fishing unit comprised, on average, of three men. Snorkelling was used by 27 fishing units as the only catching method, 3 fishing units used traps only whilst 3 fishing units combined snorkelling with the use of traps. Over the three month open season a total of 4.1 tonnes of spiny lobsters were estimated to have been landed compared to 4.2 tonnes in 1993, most landings were on Mahe (3.03 tonnes) A catch of 0.9 tonnes was landed in November, 1.2 tonnes landed in December and 2.0 tonnes landed in January. Altogether 159 trips were undertaken equivalent to 477 man-trips for the season with 28 trips in November, 63 trips in December and 68 trips in January. The snorkelling and trap capture methods represented 70.2% and 29.8% of the catch respectively. The catch per unit of effort (CPUE) for November through January was: -36 kg/trip (November), -39 kg/trip (December), -28.5 kg/trip (January). Three main species were targeted: Panulirus penicillatus (Homard Grosse Tete), Panulirus longipes (Homard Rouge), Panulirus versicolor (Homard Vert). The catch composition by fishing method was: a) Snorkellling: Homard Grosse Tete : 80.4% Homard Rouge : 19.2% Homard Vert : 0.4% b) Trap: Homard Grosse Tete : 100%
    Description: Published
    Keywords: Lobster stock ; Seychelles ; Panulirus versicolor ; Panulirus penicillatus ; Panulirus longipes ; Resource management ; Resource management ; Lobster fisheries
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 966915 bytes
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  • 11
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    Alexandria: National Institute of Oceanography and Fisheries
    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
    Format: 1623488 bytes
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  • 12
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    Victoria: Seychelles Fishing Authority | Victoria
    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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    Format: 28
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  • 13
    Publication Date: 2021-05-19
    Description: Forty oyster spat collector bags were submerged at two different sites near Mahe island fofr a period between 3.2 and 11 months. Strong currents in the south-east monsoon period resulted in a few bags lying in the sand which was detrimental to spat settlement. The mean settlement rate was calculated at 15.6 oysters per bag, however 71_310= of the bags had more than 10 oysters per bag. Considering only those bags, the settlement averaged at 27 oysters per bag. The sizes of oysters in collector bags after different soaking times, indicate that growth rate in the first few months is higher than on French Polynesia. Growth rates of oysters maintained in a cage indicated an average increase of 21.7 mm in five months, between the size of 25.9 mm and 47.76 mm. The observed mortality over the same period was 29.2_310=. Oyster spat settlement did occur all year around, indicating that spawning also occurs all through the year. Pearlculture in Seychelles is technically feasible and pearl farms will depend,for their regular supply of oysters, on collecting methods of oyster spat produced by natural stocks. Natural oyster beds are reported to be limited in Seychelles and these beds are presently exploited for the supply of the artisanal craft industry and the jewellery industry. Suitable sites for farming operations, on the granitic and on the outer coraline islands, are limited. In view of these limitations, priority has to be given to the assessment of the actual status of oyster beds and then implement neccessary of the actual measures where needed. The continuation of the Sfa training and research program regarding optimum sites, settlement rates, growth rates and other biological information will be crucial for the future development of the industry.The successful development of the pearl oyster industry in Seychelles, will largely depend on the choice of adequate management options, concerning the resource as well as the potential commercial ventures. A guideline on pearlculture development has been produced to support future initiative in this field.
    Description: Published
    Keywords: Pearl culture ; Seed collection ; Seychelles ; Spat ; Pinctada margaritifera ; Oyster culture ; Aquaculture development ; Oyster culture
    Repository Name: AquaDocs
    Type: Report
    Format: 896686 bytes
    Format: 461273 bytes
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    Format: 41
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  • 14
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    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: Fishing performances of four different types of boats (pirogues, outboard, whalers, schooners) are studied through the analysis of the temporal evolution, between July 1985 and June 1988, for four parameters: numbers of active fishing boats,- total number of fishing trips, - average number of trips/boat, - average trip duration. The trends from these analysis reveals that the boats involved in the handline fishery in seychelles have evolved considerably. These changes must be taken into consideration in the case of an eventual reorganisation of the fleet.
    Description: Published
    Keywords: Seychelles ; Fishing ; Line fishing ; Fishery statistics ; Line fishing
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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  • 15
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    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: Published
    Keywords: Seychelles ; Artisanal fishing ; Tuna fisheries ; Annual reports
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 461610 bytes
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  • 16
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    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: Published
    Keywords: Seychelles ; Annual reports ; Tuna fisheries ; Artisanal fishing
    Repository Name: AquaDocs
    Type: Report
    Format: 332605 bytes
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    Format: 21
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  • 17
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    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: Published
    Keywords: Seychelles ; Annual reports ; Fisheries development ; Tuna fisheries ; International cooperation ; Artisanal fishing ; International cooperation
    Repository Name: AquaDocs
    Type: Book
    Format: 384823 bytes
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  • 18
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    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: Published
    Description: FISHERY DEVELOPMENT, INTERNATIONAL AGREEMENTS, FISHERY ORGANIZATIONS
    Keywords: Tuna fisheries ; Artisanal fishing ; Aquaculture ; Fishery development ; Fishing industry ; Harbours
    Repository Name: AquaDocs
    Type: Book , Non-Refereed
    Format: 1394919 bytes
    Format: 683368 bytes
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  • 19
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    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: Published
    Keywords: International cooperation ; Artisanal fishing ; International cooperation ; Tuna fisheries ; Annual reports ; Fishery development
    Repository Name: AquaDocs
    Type: Report
    Format: 318937 bytes
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    Format: 15
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  • 20
    Publication Date: 2021-05-19
    Description: Published
    Keywords: Management plan ; Motherships ; Seychelles ; Fishery management
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 572164 bytes
    Format: 246644 bytes
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  • 21
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    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: Published
    Keywords: Fishery economics ; Fishery policy ; Bilateral agreements
    Repository Name: AquaDocs
    Type: Proceedings Paper , Non-Refereed
    Format: 121780 bytes
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  • 22
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    Academic Press
    In:  Tulsa, Oklahoma, 2nd edition with CD-ROM, Academic Press, vol. 27, pp. 6322, (Hardbound, ISBN: 0-12-065604-3, 320 pp.)
    Publication Date: 2005
    Description: Contents: Preface 1. Introduction 2. Linear Regression 3. Discretizing Continuous Inverse Problems 4. Rank Deficiency and Ill-Conditioning 5. Tikhonov Regularization 6. Iterative Methods 7. Other Regularization Techniques 8. Fourier Techniques 9. Nonlinear Regression 10. Nonlinear Inverse Problems 11. Bayesian Methods Appendix A: Review of Linear Algebra Appendix B: Review of Probability and Statistics Appendix C: Glossary of Notation; Bibliography; Index It is accompanied by a Web site that contains Matlab code corresponding to all examples. Audience: Students and professionals in Astrophysics, Applied Mathematics, Atmospheric Science, Geologiocal Engineering, Geophysics, Hydrology, Oceanography and related fields.
    Keywords: Textbook of geophysics ; Textbook of engineering ; Inversion ; Non-linear effects ; Statistical investigations ; Data analysis / ~ processing ; Error analysis ; Seismology ; Location
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  • 23
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    Am. Meteor. Soc.
    In:  Professional Paper, Compendium of Meteorology, Dover, 439 pp., Am. Meteor. Soc., vol. 7, no. XVI:, pp. 1303-1311, (ISBN: 3-540-23712-7)
    Publication Date: 1951
    Keywords: Micro seismicity ; Seismology ; NOISE
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