期刊
ECOLOGICAL MODELLING
卷 243, 期 -, 页码 1-7出版社
ELSEVIER
DOI: 10.1016/j.ecolmodel.2012.05.006
关键词
Copepod; Foodweb; Marine; NPZ; Plankton; Rosenzweig-MacArthur
类别
Aquatic biogeochemical models that include zooplankton feeding on phytoplankton assess a range of ecologically important issues. Such models generally assume assimilation efficiency (e) to be invariant with prey abundance. We first review the literature and make a strong case for recognising and quantifying the general dependence of e on prey abundance. Then, using two standard, fundamental multi-trophic models (the Rosenzweig-MacArthur, RM, predator-prey couplet and the nutrient-phytoplankton-zooplankton, NPZ, models) we explore how varying e with prey abundance alters the outcome of models. Incorporating variable e into both models altered their dynamics, potentially in important and counterintuitive directions. We suggest there is now a need for further empirical consideration of the extent to which zooplankton e changes with phytoplankton abundance, specifically focusing on the shape of this response, and then for continued assessment of the impact of variable e on model dynamics. (C) 2012 Elsevier B.V. All rights reserved.
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