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Title

Food quality dominates the impact of food quantity on Daphnia life history: possible implications for re-oligotrophication

Authors
Sarpe, Dirk
de Senerpont Domis, Lisette
Declerck, Steven
van Donk, Ellen
Published in Inland Waters. 2014, vol. 4, no. 4, p. 363-368
Abstract The elemental composition of phytoplankton is highly variable compared to the relatively narrow stoichiometry of zooplankton grazers. Using a full factorial design, we tested the effects of alterations in algal elemental composition (i.e., food quality) combined with food quantity on the life history of a Daphnia galeata clone from Lake IJsselmeer. Lower food quality reduced survival, growth, and reproduction. Food quantity became important at high food quality only. The strong effct of food quality indicates the potential for a stoichiometric bottleneck in Lake IJsselmeer, resulting in less high quality food for higher trophic levels as a result of re-oligotrophication.
Keywords Daphnia galeataFood quality and quantityLife historyPhosphorusRe-oligotrophicationStoichiometry
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Structures
Research groups Microbial Ecology
ISE Pôle Sciences
ISE Biodiversité
ISE Eau
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SARPE, Dirk et al. Food quality dominates the impact of food quantity on Daphnia life history: possible implications for re-oligotrophication. In: Inland Waters, 2014, vol. 4, n° 4, p. 363-368. doi: 10.5268/IW-4.4.701 https://archive-ouverte.unige.ch/unige:73722

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Deposited on : 2015-06-26

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