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Chapitre D'ouvrage Année : 2013

Ecological Stoichiometry

Résumé

The quality of food resources is crucial for animal growth, development and population dynamics. Therefore, limitations are posed on organisms because of food scarcity in specific nutrients. These limitations may shape ecological interactions and affect cycling of nutrients in the ecosystem. To better understand nutrient cycling driven by nutritional constraints posed on organisms, their communities and populations the ecological stoichiometry framework was developed (Figure 1). This research framework capitalizes on organisms to be composed of identical building blocks - atoms of chemical elements - even though they build remarkable diversity of organic molecules having diverse functions . During growth and development organisms assimilate all the building blocks needed to compose the adult body. The body is built of atoms in taxonomically specific proportion known as the organismal stoichiometry . The demand for resources gathered during juvenile growth is reflected in organismal stoichiometry of adult body and stoichiometric mismatch (Figure 2) may occur between the atomic composition of the body and food . Even toxic effects may in fact be caused by such stoichiometric mismatch rather than true toxic substances .

Dates et versions

hal-03924546 , version 1 (05-01-2023)

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Michael Danger, Florence Maunoury-Danger. Ecological Stoichiometry. Encyclopedia of Aquatic Ecotoxicology, Springer Netherlands, pp.317-326, 2013, ⟨10.1007/978-94-007-5704-2_31⟩. ⟨hal-03924546⟩
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