unuftp.is Final Project 2017 REVIEW OF QUEEN CONCH (Lobatus gigas) SAMPLING EFFORTS IN THE COMMONWEALTH OF THE BAHAMAS Indira Nyoka Brown Science and Conservation Unit Ministry of Agriculture and Marine Resources P. O. Box N-3028, East Bay Street, Nassau, The Bahamas
[email protected] Supervisor(s): Supervisors: Jónas Páll Jónasson, Julian M. Burgos
[email protected] [email protected] Marine and Freshwater Research Institute, Reykjavík, Iceland ABSTRACT Recognising the commercial importance of the queen conch fishery, increasing fishing effort, and high demand in international trade for resources, there are concerns about the long-term sustainability of queen conch stocks throughout The Bahamas. The objective of this study was to review the sampling efforts of queen conch in The Bahamas and evaluate the precision of the estimates when reducing the sample. Analyses were performed to quantify the spatial coverage of previous surveys. Permutation analyses were carried out on mean abundance to evaluate the precision of the estimates when reducing the sample efforts on three size classes of queen conch, from survey sites in the Ragged Island and the Jumentos Cays; Sandy Point, Abaco, and Mores Island, Abaco. The results suggested that sampling effort can slightly be reduced to expand the survey area or reallocate effort in areas that have not been surveyed. The total surveyed area was estimated at a total of 3,567 km². The total habitat of queen conch was estimated at an approximate size of 11,888 km². The layers comprised of two previously identified queen conch habitats and queen conch surveyed areas that were obtained from The Nature Conservancy - Northern Caribbean Division, Community Conch and FAO.