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- W2070110698 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 260:151-159 (2003) - doi:10.3354/meps260151 Trophic ecology of nematodes from various microhabitats of the Roscoff Aber Bay (France): importance of stranded macroalgae evidenced through δ13C and δ15N P. Riera*, C. Hubas Station Biologique de Roscoff, Université Pierre & Marie Curie Paris VI - CNRS-INSUE, Place Georges-Teissier, BP 74, 29682 Roscoff cedex, France *Email: riera@sb-roscoff.fr ABSTRACT: Spatial and temporal diversity of food sources of intertidal nematodes of 3 different feeding habitats (estuarine muddy sediments, Spartina maritima and Juncus maritimus marshes) in the Roscoff Aber Bay, France, was assessed by the use of δ13C and δ15N values. Within the bay, nematodes largely dominated within the total meiofauna. Throughout the 3 sampling periods, the δ13C and δ15N values for nematodes and sources showed that the dominant sedimentary organic matter sources within the 3 microhabitats considered, namely terrigeneous inputs, detrital Spartina maritima or Juncus maritimus and marine POM, did not contribute a significant part of the diet to locally occurring nematodes. In fact, the δ13C and δ15N values indicate that organic matter derived from stranded macroalgae, mostly Enteromorpha sp. and Fucus spiralis, was the primary contributor to the assimilated food sources of nematodes; more readily utilisable sources (i.e. benthic diatoms) are virtually absent. The present work provides evidence that detrital pathways, including stranded macroalgae from nearby rocks and free-living nematodes, play a key role in the trophic ecology of intertidal flat areas. KEY WORDS: Nematodes · Feeding ecology · Intertidal bay · Stranded algae · Stable isotopes Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 260. Online publication date: September 30, 2003 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2003 Inter-Research." @default.
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- W2070110698 title "Trophic ecology of nematodes from various microhabitats of the Roscoff Aber Bay (France): importance of stranded macroalgae evidenced through δ13C and δ15N" @default.
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