Dirk Zeller Æ Shawn Booth
نویسندگان
چکیده
Fisheries catches from Pacific Island coral reefs are rarely recorded in official statistics. Reconstruction of catch estimates with limited hard data requires interpolation and assumptions, justifiable only by the unsatisfactory alternative of continued substitution of zero catches, a common policy interpretation for ‘no data’. Uncertainties associated with reconstructions are high, requiring conservative estimation. American Samoan domestic fisheries consist of an artisanal, small-boat sector, whose commercial catches are reported, and a shorebased subsistence sector, with no regular reporting. Our catch reconstruction (with large pelagic species removed) suggested a 79% decrease in catches between 1950 (752 t) and 2002 (155 t). Accounting for rapid humanpopulation growth on the main island, the per capita catch rate may have declined from 36.3 kgÆperson 1 year 1 in 1950 to 1.3 kgÆperson 1 year 1 by 2002, while the catch rate for the inhabited outer islands has been independently reported as 58.6 kgÆperson 1 year . Catch per area of coral reef (to 50-m depth) may have declined from 5.5 to 0.7 t km 2 year 1 for the main island, and from 9.1 to 4.9 t km 2 year 1 for the outer islands, for 1950 and 2002, respectively. Summed for 1950–2002, our reconstruction suggested a 17-fold difference between reconstructed estimates and reported statistics.
منابع مشابه
Working Paper Series Historic Catch Reconstruction for Coral Reef-and Bottom-fisheries in Introduction
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