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Predicting nutrient excretion of aquatic animals with metabolic ecology and ecological stoichiometry : A global synthesis [Ecology]

Keywords : animals, biogeochemistry, ecosystems, freshwater, global, global studies, lakes/ponds, limnology/hydrology, marine, physiological ecology, reservoirs, rivers/streams

par Frédéric Magné - publié le

The metabolic theory of ecology (MTE) and ecological stoichiometry (ES) are both prominent frameworks for understanding energy and nutrient budgets of organisms. We tested their separate and joint power to predict nitrogen (N) and phosphorus (P) excretion rates of ectothermic aquatic invertebrate and vertebrate animals (10,534 observations worldwide). MTE variables (body size, temperature) performed better than ES variables (trophic guild, vertebrate classification, body N:P) in predicting excretion rates, but the best models included variables from both frameworks.(...)

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