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- W2093001811 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 403:53-61 (2010) - DOI: https://doi.org/10.3354/meps08484 Stable isotopes reveal a consistent consumer–diet relationship across hundreds of kilometres Mathew A. Vanderklift1,*, Thomas Wernberg2,3 1CSIRO Marine and Atmospheric Research, Private Bag 5, Wembley, WA 6913, Australia 2Centre for Marine Ecosystems Research, Edith Cowan University, 100 Joondalup Dve, Joondalup, WA 6027, Australia 3School of Plant Biology, University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia *Email: mat.vanderklift@csiro.au ABSTRACT: Characterising geographical variation in trophic interactions is an important step towards understanding the consequences of changes in food webs. We characterised geographical variation across ~1000 km in stable isotope values (δ15N and δ13C) of the widely distributed sea urchin Heliocidaris erythrogramma and macroalgae that are its potential food. Variation in δ15N of H. erythrogramma and macroalgae was typically greatest among locations separated by hundreds of km, while variation in δ13C was typically greatest among reefs separated by a few km. Geographical variation in δ15N and δ13C of H. erythrogramma was well-explained by variation in δ15N and δ13C of the kelp Ecklonia radiata. The slope and intercept of regressions of stable isotope ratios of H. erythrogramma on kelp were within the range predicted if the sea urchin’s diet was exclusively kelp. These results are consistent with high reliance on a single diet across hundreds of km, revealing that H. erythrogramma likely relies predominantly on a single food source, viz. E. radiata, across southwestern Australia. KEY WORDS: Herbivory · Kelp · Niche width · Sea urchin · Trophic interactions Full text in pdf format PreviousNextCite this article as: Vanderklift MA, Wernberg T (2010) Stable isotopes reveal a consistent consumer–diet relationship across hundreds of kilometres. Mar Ecol Prog Ser 403:53-61. https://doi.org/10.3354/meps08484 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 403. Online publication date: March 22, 2010 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2010 Inter-Research." @default.
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- W2093001811 title "Stable isotopes reveal a consistent consumer–diet relationship across hundreds of kilometres" @default.
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