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Science 20 November 1998:
Vol. 282. no. 5393, p. 1381
DOI: 10.1126/science.282.5393.1381s
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This Week in Science
D. Pauly et al. analyzed global fisheries statistics from the Food and Agricultural Organization (FAO) of the United Nations and found that "the mean trophic level of the species groups ... declined from 1950 to 1994" (Reports, 6 Feb., p. 860).J. F. Caddy et al. comment that Pauly et al. "greatly oversimplify the situation with their hypothesis and may have misinterpreted the FAO statistics." A figure suggests that "the increasing contribution of aquaculture [like the farming of shellfish] to total production" might account for the findings in the report.In response, Pauly et al. discuss the considerations raised in the comment and provide a figure showing trophic level trends "after removal of mariculture production data" to support their earlier conclusion.The full text of these comments can be seen at www.sciencemag.org/cgi/content/full/282/5393/1383a
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Science. ISSN 0036-8075 (print), 1095-9203 (online)
