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    Turnover rates of nitrogen stable isotopes in the salt marsh mummichog, Fundulus heteroclitus, following a laboratory diet switch

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    Logan et al Oecologia Revised Manuscript Final Format.pdf (166.7Kb)
    Date
    2005-09-19
    Author
    Logan, John  Concept link
    Haas, Heather  Concept link
    Deegan, Linda A.  Concept link
    Gaines, Emily F.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/371
    As published
    https://doi.org/10.1007/s00442-005-0277-z
    Keyword
     Discrimination; Liver; Metabolism; Trophic level 
    Abstract
    Nitrogen stable isotopes are frequently used in ecological studies to estimate trophic position and determine movement patterns. Knowledge of tissue-specific turnover and nitrogen discrimination for the study organisms is important for accurate interpretation of isotopic data. We measured δ15 N turnover in liver and muscle tissue in juvenile mummichogs, Fundulus heteroclitus, following a laboratory diet switch. Liver tissue turned over significantly faster than muscle tissue suggesting the potential for a multiple tissue stable isotope approach to study movement and trophic position over different time scales; metabolism contributed significantly to isotopic turnover for both liver and muscle. Nitrogen diet-tissue discrimination was estimated at between 0.0 and 1.2‰ for liver and –1.0 and 0.2‰ for muscle. This is the first experiment to demonstrate a significant variation in δ15 N turnover between liver and muscle tissues in a fish species.
    Description
    Author Posting. © The Authors, 2005. This is the author's version of the work. It is posted here by permission of Springer-Verlag GmbH for personal use, not for redistribution. The definitive version was published in Oecologia 147 (2006): 391-395, doi:10.1007/s00442-005-0277-z.
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    Suggested Citation
    Preprint: Logan, John, Haas, Heather, Deegan, Linda A., Gaines, Emily F., "Turnover rates of nitrogen stable isotopes in the salt marsh mummichog, Fundulus heteroclitus, following a laboratory diet switch", 2005-09-19, https://doi.org/10.1007/s00442-005-0277-z, https://hdl.handle.net/1912/371
     
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