Reconstruction of food conditions for Northeast Atlantic bivalve species based on Dynamic Energy Budgets |
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| Authors: | Vnia Freitas Joana FMF Cardoso Sílvia Santos Joana Campos Jan Drent Sofia Saraiva Johannes IJ Witte Sebastiaan ALM Kooijman Henk W Van der Veer |
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| Institution: | aNIOZ, Royal Netherlands Institute for Sea Research, P.O. Box 59, 1790 AB Den Burg Texel, The Netherlands;bCIMAR/CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal;cVU, Vrije Universiteit Amsterdam, Department of Theoretical Biology, De Boelelaan 1087, 1081 HV Amsterdam, The Netherlands;dIST/MARETEC, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal |
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| Abstract: | Required assimilated energy to support observed growth was reconstructed for four common bivalve species (Mya arenaria, Cerastoderma edule, Mytilus edulis and Macoma balthica) from various Northeast Atlantic coastal areas, along the species distributional range. The approach applied was based on the Dynamic Energy Budget (DEB) theory whereby observed growth patterns in the field, in combination with prevailing temperatures, were used to reconstruct the average food intake experienced in the field scaled to the maximum possible. For all species, results suggest food limitation over the range of locations. In general, reconstructed food intake indicated better conditions for C. edule compared to the other species, while M. edulis presented the lowest food conditions in all the areas. Despite the indications for a latitudinal trend in primary production, no clear pattern or relationship between reconstructed food conditions and latitude was observed suggesting that any trend may be overruled by local conditions. |
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| Keywords: | Bivalves Intertidal DEB Theory Food Intake Food Limitation Latitude |
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