ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Fisheries  (4)
  • Lobster fisheries  (4)
  • Industrial Chemistry
  • Inorganic Chemistry
  • Seismology
  • Victoria: Seychelles Fishing Authority  (6)
  • WWF Programa Marino para Latinoamérica y el Caribe  (2)
  • Am. Meteor. Soc.  (1)
  • 2005-2009  (8)
  • 1950-1954  (1)
  • 1
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    facet.materialart.
    Unknown
    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
    Format: 520444 bytes
    Format: application/pdf
    Format: application/pdf
    Format: 19
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    facet.materialart.
    Unknown
    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: This report reviews the lobster catch during the months of November and December 1992. In total, 38 fishing units were licenced: 26 on Mahe, 7 on La Digue and 5 on Praslin. 8 licence holders provided no information and claimed that they undertook no fishing trips at all. Of the remainder, each fishing unit comprised an average of 3 men. 2 fishing units used traps as the only catching method, 27 used snorkelling and 1 a combination of traps and snorkelling. For the two month period, an estimated catch of 4.9 tonnes of Spiny Lobster for all sites were landed; of which Mahe contributed an estimated 2.8 tonnes. For the month of November only, a total catch of 2.7 tonnes of lobsters were estimated and for the month of December a total of 2.2 tonnes were caught. For the month of November there were a total of 142 trips by 418 men, and for the month of December there were 89 trips and 252 men were involved in the fishery. Three main species were landed : Panulirus penicilatus (Homard Grosse Tete), Panulirus longipes (Homard Rouge), Panulirus versicolor (Homard Vert). The catch rate for the month of November was 19.5 kg/trip, and the catch rate of December was 27.2 kg/trip. The mean carapace length of each species were respectively: (in cm) MALES FEMALES G.T. = 10.8 G.T. = 8.8 H.R. = 8.7 H.R.= 8.4 H.V. = 9.0 H.V.= 8.6 By fishing method snorkelling, 95.5% of lobsters were caught and by fishing method trap, 4.5% of lobsters were caught. The catch composition from fishing methods utilised were: a) Snorkelling: Homard Grosse Tete, 85.9% Homard Rouge, 13.9% Homard Vert, 0.2% b) Trap: Homard Rouge, 100%
    Description: Published
    Keywords: Lobster catches ; Methodology ; Lobster fisheries
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 1039963 bytes
    Format: 1069044 bytes
    Format: application/pdf
    Format: application/pdf
    Format: 44pp.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    facet.materialart.
    Unknown
    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
    Format: 1159051 bytes
    Format: application/pdf
    Format: application/pdf
    Format: 44
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    facet.materialart.
    Unknown
    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: The present report reviews the spiny lobster fishery on the Mahe Plateau for the 2001/2002 fishing season. The monitoring programme, set up in 1992, was continued this season to collect more information on the spiny lobster stock in order to improve and maintain proper management of this resource around the Mahe Plateau. For the 2001/2002 lobster fishing season, a total of 40 licenses were issued namely twenty seven on Mahe, five on Praslin and eight on La Digue. Similar to previous seasons, the most frequently used lobster fishing technique was snorkelling which involved 32 fishing units, whilst only four units used the trap method and one used both snorkelling and trap. For this three-month fishing season, a total of 5.5 tonnes of spiny lobsters were estimated to have been landed compared to 10.2 tonnes in 2000-2001 fishing season. Most landings were on Mahe, which accounted for 58.44 % of the total catch (3.214 tonnes) followed by Praslin with 13.89% (0.77 tonnes). Both La Digue and Silhouette groups had landings of 0.5 tonnes each. The month of November accounted for 1.36 tonnes, while 3.37 tonnes was landed in December and 0.81 tonnes in January. A total of 350 trips were undertaken equivalent to 803 man-trips for the season with 107 trips in November, 193 trips in December and 50 trips in January. The snorkelling and trap capture methods represented 96% and 4% of the total catch respectively. The catch rates represented by catch per unit effort(CPUE) throughout the season were as follows: - 12.75 kg/trip(November) - 17.49 kg/trip (December) - 16.35 kg/trip January). The main species targeted were: Homard Grosse Tete (Panuliruspenidilatus) Homard Rouge (Panulirus longipes) Homard Vert (Panulirus versicolor). The catch composition by fishing method was as follows: a.) Snorkelling: b.)Trap: Homard Grosse Tete: 65.68% Homard Grosse Tete: 14.21% Homard Rouge: 26.83% Homard Rouge: 85.79% Homard Vert: 7.07%
    Description: Published
    Keywords: Lobsters ; Fishery data ; Catch statistics ; Fishery statistics ; Lobster fisheries ; Catching methods
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 623521 bytes
    Format: application/pdf
    Format: 22
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Publication Date: 2021-05-19
    Description: This report reviews the catch assessment survey, conducted by staff of the Seychelles Fishing Authority (SFA), of the spiny lobster fishery on the Mahe Plateau during the 1993 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 so as to improve the management of this resource around the Mahe Plateau. A total of 28 licenses were issued (compared to 38 in 1992); 16 on Mahe, 6 on Praslin and 6 on La Digue. Licensed fishing unit comprised an average of three men. Snorkelling was used by 24 fishing units as the only catching method, while 2 fishing units combined snorkelling with the use of traps. One fishing unit used scuba diving as the fishing method and declared no lobsters caught during the 3 fishing trips. One fishing unit was licensed in December and apparently didn't fish. Over the two months a total of 4.1 tonnes of spiny lobsters were estimated to have been landed compared to 4.9 tonnes in 1992, most landings were on Mahe (2.2 tonnes). A catch of 2.7 tonnes was landed in November and only 1.4 tonnes landed in December. Altogether 240 trips were undertaken equivalent to 665 man-trips for the season with 148 trips in November and 92 trips in December. Traps were used less in November (3% of trips) than in December (16% of trips). The catch per unit of effort (CPUE) for the month of November and December were: - 18.4 kg/trip (November) and 17.8 kg/trip (December) for snorkelling, - 2.2 kg/trip (November) and 5.4 kg/trip (December) for trap fishing. Three species were mainly landed: Panulirus penicillatus (Homard Grosse Tete), Panulirus longipes(Homard Rouge) and Panulirus versicolor(Homard Vert). The catch composition by fishing method was: a) Snorkelling: Homard Grosse Tete :84.3% Homard Rouge:15.5% Homard Vert:0.2% b) Trap: Homard Grosse Tete : 30% Homard Rouge:70% Only 2.4% of the total catch was captured by traps and 97.6% caught by snorkelling
    Description: Published
    Keywords: Catches ; Lobster fisheries
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 431552 bytes
    Format: 620007 bytes
    Format: application/pdf
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    facet.materialart.
    Unknown
    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
    Format: application/pdf
    Format: 28
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    facet.materialart.
    Unknown
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...