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  Food chain effects of nutrient limitation in primary producers

Boersma, M., Becker, C., Malzahn, A. M., & Vernooij, S. (2009). Food chain effects of nutrient limitation in primary producers. Marine and Freshwater Research, 60(10), 983-989. doi:10.1071/MF08240.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D628-5 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D629-3
Genre: Journal Article

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Boersma_2009.pdf (Publisher version), 220KB
 
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Boersma, Maarten1, Author              
Becker, Claes1, Author              
Malzahn, Arne M., Author
Vernooij, Sonja1, Author              
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              

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Free keywords: ecological stoichiometry; homeostasis; Redfield ratio
 Abstract: The propagation of mineral limitation in primary producers to the second consumer level has rarely been investigated. Recently, it has been shown that limitation effects do travel up the food chain, not only quantitatively, but also qualitatively, and also that these quality effects affect the nutritional condition and growth of secondary consumers. The present study experimentally investigated the effect of phosphorus limitation in combination with fatty acid addition in primary producers (Scenedesmus obliquus) channelled through a primary consumer (Daphnia magna) on the condition of larval rainbow trout (Oncorhynchus mykiss). The C: P ratio and the fatty acid concentrations of the primary producers varied significantly with the phosphorus concentration of the culture media. These differences were also visible in the primary consumers (D. magna) feeding on the algae. The significantly different stoichiometry and fatty acid concentrations of the daphnids fed to larval trout did not lead to significant differences in growth, but the additional supplementation of fatty acid emulsions caused a significant increase in the condition of the fish. It was found that in the case of Daphnia as the primary prey for fish, with its relatively high phosphorus content even under phosphorus limitation, it is unlikely that phosphorus limitation affects fish condition and growth.

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Language(s): eng - English
 Dates: 2009
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 439075
DOI: 10.1071/MF08240
Other: 2727/S 39047
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Title: Marine and Freshwater Research
Source Genre: Journal
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Pages: - Volume / Issue: 60 (10) Sequence Number: - Start / End Page: 983 - 989 Identifier: ISSN: 1323-1650 (print)
ISSN: 1448-6059 (online)