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There's no harm in having too much: A comprehensive toolbox of methods in trophic ecology

Nabil Majdi 1 Nicolas Hette-Tronquart 2 Etienne Auclair Alexandre Bec 3 Tiphaine Chouvelon 4 Bruno Cognie 5 Michaël Danger 6, 7 Priscilla Decottignies 5 Aurélie Dessier 4 Christian Desvilettes 3 Stanislas Dubois 8 Christine Dupuy 4 Clémentine Fritsch 9 Cédric Gaucherel 10 Mickael Hedde 11 Franck Jabot 12 Sébastien Lefebvre 13 Martin P Marzloff 8 Benjamin Pey 14 Nathalie Dubois Peyrard Peyrard 15 Thibaut Powolny 9 Régis Sabbadin 16 Elisa Thébault 6 Marie-Elodie Perga 17 
Abstract : Trophic ecology is the study of feeding interactions and food acquisition by organisms. It includes the causes and consequences of those behaviours at all levels of biological organisation. As a field of research, it crosses many disciplinary boundaries and provides knowledge that is pertinent to many other areas of ecology. Here we list and categorise the methods available to trophic ecologists whose toolbox has broadened considerably in recent years. They encompass empirical and numerical approaches with focus ranging from molecules to ecosystems. We further examine the relationship of each method to features such as the scale of observation (from microbes to largest organisms) and organisational level (from individuals to ecosystems) as well as the ecological question the method is capable of answering (from detecting predator-prey relationships to studying implications and consequences at different scales). Our survey reveals a very wide range of methodologies, each more-or-less appropriate for a particular line of research. It also identifies deficits, for example, trophic interactions at microscopic scales, for which empirical methods have hardly been used, as well as trophic models that have failed to consider fluxes at the ecosystem scale. Furthermore, we note that the combination of methodologies remains under-exploited despite great opportunities to solve complex ecological questions and to foster the emergence of new insights and hypotheses regarding organism, population and/or ecosystem properties.
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Submitted on : Monday, November 19, 2018 - 12:04:22 PM
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Nabil Majdi, Nicolas Hette-Tronquart, Etienne Auclair, Alexandre Bec, Tiphaine Chouvelon, et al.. There's no harm in having too much: A comprehensive toolbox of methods in trophic ecology. Food Webs, Elsevier, 2018, 17, pp.e00100-. ⟨10.1016/j.fooweb.2018.e00100⟩. ⟨hal-01926513⟩



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