2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/23/2019 | 12:00 PM - 12:15 PM | AMONG AND WITHIN-SPECIES FUNCTIONAL VARIABILITY OF AQUATIC AND TERRESTRIAL MACRO-DETRITIVORES | 254 B
AMONG AND WITHIN-SPECIES FUNCTIONAL VARIABILITY OF AQUATIC AND TERRESTRIAL MACRO-DETRITIVORES
Predicting consumption rate variability with other traits could help to scale up information from individuals to ecosystems. While body mass appears to be the most informative trait to explain consumption rate among species, recent studies suggest it could be less informative among individuals of a same species. We tested this hypothesis using aquatic and terrestrial macro-detritivores, with an experiment assessing litter consumption rate repeatedly for each individual. This design allows to partition the consumption rate variability among species and among individuals and to test the explanatory power of body mass to predict consumption rate at both levels, as well as to test the generality of our results. We estimated 35% of variability owned to individuals and 53% to species. Body mass explained 38% of among-species variability, but only 4% of variability found among individuals within species. Yet, almost 38% of variability found among individuals was repeatable and thus could be explained by phenotypic traits. These results validate our hypothesis, which appears to generalize across aquatic and terrestrial macro-detritivores. We suggest which phenotypic traits beyond body mass could be useful to unravel consumption rate variability across biological levels of organization.
- Decomposition
- Aquatic-terrestrial Linkage
- Functional Ecology
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Presenters/Authors
Thibaut Rota
(), EcoLab, Université de Toulouse, CNRS, France, thibaut.rota@univ-tlse3.fr;
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Benjamin Pey
(), EcoLab, Université de Toulouse, CNRS, France, benjamin.pey@ensat.fr;
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Eric Chauvet
(), EcoLab, Université de Toulouse, CNRS, France, eric.chauvet@univ-tlse3.fr;
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Antoine Lecerf
(), EcoLab, Université de Toulouse, CNRS, France, antoine.lecerf@univ-tlse3.fr;
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