Temperature dependence of invertebrate nutrient use and requirements

LASPOUMADERES, CECILIA; MEUNIER, CEDRIC L.; MAGNIN, AMARU; BERLINGHOF, JOHANNA; ELSER, JAMES J.; BALSEIRO, ESTEBAN; TORRES, GABRIELA; MODENUTTI, BEATRIZ; TREMBLAY, NELLY; BOERSMA, MAARTEN

Lincoln

Congreso; Conference on Biological Stoichiometry; 2023

University of Nebraska

In light of ongoing climate change, it is increasingly important to know how invertebrate nutritional requirements are affected by changing temperatures. Here, we analyse the wide thermal response of phosphorus (P) requirementsvia elemental gross growth efficiencies of Carbon (C) and P, and the Threshold Elemental Ratios in different aquatic invertebrates. We show that they all share a non-linear cubic thermal response of nutrient requirements. Phosphorus requirements decrease from low to intermediate temperatures, increase at higher temperatures and decrease again when temperature is excessive. This common thermal response of nutrient requirements is of great importance if we aim to understand or even predict how ectotherm communities will react to global warming and nutrient-driven eutrophication.