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ProjectEstimated catch, price and value for national fleet sectors from pelagic fisheries in the Lesser Antilles
Scientific Basis for Ecosystem-Based Management in the Lesser Antilles Including Interactions with Marine Mammals and Other Top Predators (LAPE)
2008Also available in:
No results found.Catch data are required for estimation of fishing mortality and for representation of fleet dynamics in the Lesser Antilles Pelagic Ecosystem (LAPE) model. The relative extractions by country and fleet type are used to investigate a range of policy scenarios (effort control) for management of shared stocks of pelagic species. A review by the LAPE project concluded that the use of the regional fisheries statistical system (CariFIS) database is still limited and that there remained dat a management issues which were major impediments to full implementation of CariFIS in national fisheries statistics systems. The additional time and technical assistance required to solve these problems are beyond the scope of the LAPE Project. It was necessary therefore to acquire the data by either extraction from international databases at Food and Agriculture Organization (FAO) and the International Commission for the Conservation of Atlantic Tunas (ICCAT) or a re-examination of country data holdings in the variety of software used (CariFIS, MS EXCEL, MS ACCESS). By preference, data were obtained from national sources; however, data were used from the international databases when individual country data proved inaccessible. This report documents the modifications to available data and assumptions made in arriving at estimates of total catch and value of pelagic fisheries in the LAPE region. It is not intended to give a detailed analysis of catches in the region, but rather to provide information in the format necessary -
ProjectDerivation of diet compositions in the Lesser Antilles Pelagic Ecosystem
Scientific Basis for Ecosystem-Based Management in the Lesser Antilles Including Interactions with Marine Mammals and Other Top Predators (LAPE)
2008Also available in:
No results found.One of the medium-term objectives of the LAPE project is to enable fishery institutions in the Lesser Antilles to implement ecosystem approach to fisheries (EAF) management of the pelagic fisheries. An immediate objective of LAPE is the formulation of a food web model of the ecosystem to better understand the effects of fisheries on predator–prey relationships, and of the effects of food web dynamics on fisheries. This report presents average diet compositions of the 29 predator func tional groups, which include seabirds, marine mammals, turtles, fish, squid and zooplankton, in the LAPE model. The data were obtained through field sampling and analysis of stomach contents of a number of species of large and medium sized pelagic fish and marine mammals, as well as through a comprehensive search of published and unpublished literature. Data from 131 studies, of which about 8 percent were from the LAPE area, were used to derive the average diet compositions presented in this report. Despite the scarcity of data from within the LAPE area itself, a reasonable amount of data on same or similar species was available from adjacent areas in the Western Atlantic, including the Caribbean, and other areas mainly in the Atlantic. As expected, the availability of diet information was directly related to the commercial importance of the species. The analysis presented here does not consider differences in diet compositions arising from predator ontogenic changes and size, or seasonal changes in diets. A major problem encountered in a number of the studies was the low level of taxonomic disaggregation of the prey and relatively high proportion of unidentified prey items. Further studies are needed to better quantify diet compositions of the species in the LAPE ecosystem, including non-commercial species that might play an important ecological role. -
ProjectCetacean surveys in the Lesser Antilles - 2000-2006
Scientific Basis for Ecosystem-Based Management in the Lesser Antilles Including Interactions with Marine Mammals and Other Top Predators (LAPE)
2007Also available in:
No results found.Sighting surveys are the principal means of obtaining information about the species, abundance, distribution and movements of marine mammals and other air-breathing groups. During the course of the project a number of cetacean sighting surveys were conducted in both near-shore (small-scale) and offshore (large-scale) waters of the Lesser Antilles Pelagic Ecosystem (LAPE). In addition, the results from additional surveys, conducted in the same area for the period 2000-2003, were compi led and incorporated into the present analysis. With one exception, statistical analysis of the surveys was not possible due to small numbers of sightings. In the one case where an analysis was completed it was based on species aggregated into groups of similar behaviour (for sighting purposes). Estimates of the abundance of the aggregate groups had high coefficients of variation, ranging from 0.34 to 0.89. The species identified in the surveys were all known to be present in the reg ion although one important group of cetaceans reported to be in the region, the killer whales (e.g. Orcinus orca, Pseudorca crassidens, Feresa attenuate), was not observed during any of the LAPE project surveys.
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