Temporal variation in stable isotope composition (δ13C, δ15N and δ34S) of a temperate Zostera marina food web.

Mittermayr, Agnes, Fox, S. E. and Sommer, Ulrich (2014) Temporal variation in stable isotope composition (δ13C, δ15N and δ34S) of a temperate Zostera marina food web. Open Access Marine Ecology Progress Series, 505 . pp. 95-105. DOI 10.3354/meps10797.

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Abstract

Simultaneous triple stable isotope analysis of carbon, nitrogen and sulphur was employed to study the temporal variation in the food web of a subtidal eelgrass Zostera marina bed in the western Baltic Sea. Samples of 3 potential food sources (eelgrass, epiphytes and seston) and consumer species were collected biweekly from March through September 2011. Temporal variation of stable isotope compositions was observed in primary producers and consumer species. However, variation between replicates, particularly omnivores, often exceeded variation over time. The high degree of omnivory among the generalist feeders in this eelgrass community allows for generalist feeders to flexibly switch food sources, thus enhancing food-web stability. As coastal systems are subject to seasonal changes, as well as alterations related to human disturbance and climate, these food webs may retain a certain resilience due to their plentiful omnivores.

Document Type: Article
Additional Information: WOS:000336913000008
Keywords: Trophic level; Eelgrass; Consumer; Primary producer; Baltic Sea
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-N Experimental Ecology - Food Webs
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.3354/meps10797
ISSN: 0171-8630
Projects: Future Ocean
Date Deposited: 30 May 2014 09:54
Last Modified: 01 Apr 2019 23:38
URI: http://oceanrep.geomar.de/id/eprint/24662

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