Tropical Pacific Pelecypods and Productivity: A Hypothesis
Abstract:I present the hypothesis that a general decline in nutrients for suspension-feeders from the western rim of the tropical Pacific to the oceanic islands of Micronesia and Polynesia accounts for the low diversity, small adult body size, and prevalence of strongly inflated shells in oceanic shallow-water pelecypod assemblages. Gastropods and other groups at higher trophic levels are much less affected by this gradient in nutrition. Some preliminary observations support the hypothesis, but more work is needed to establish the relationships among pelecypod size, growth rate, and shell form.
Document Type: Research Article
Publication date: 1990-07-01
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