Journal
ESTUARINE COASTAL AND SHELF SCIENCE
Volume 56, Issue 1, Pages 91-98Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/S0272-7714(02)00124-5
Keywords
Talitrus saltator; strandline; detrital macroalgae; stable isotopes; sandy beach; Brittany
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The importance of stranded macrophyte detritus as food sources for an amphipod inhabiting sandy beaches, Talitrus saltator, has been investigated by the use of stable isotopes (delta(13)C, delta(15)N) during summer and autumn 2000. The results showed that the different co-occurring stranded macrophytes, mostly macroalgae, had distinct delta(13)C vs. delta(15)N values. In addition, the study underlined the importance of Talitrus saltator as a key consumer of stranded macroalgal detritus. However, delta(13)C vs. delta(15)N strongly suggests a preferential utilization of Fucus serratus as a food source by Talitrus saltator within the available pool of detrital macroalgae, and the ability of this amphipod to use this detrital macroalgae without trophic mediation. (C) 2003 Elsevier Science B.V. All rights reserved.
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