Application of nitrogen stable isotope analysis in size-based marine food web and macroecological research

Jennings, Simon ORCID:, Barnes, Carolyn, Sweeting, Christopher J. and Polunin, Nicholas V. C. (2008) Application of nitrogen stable isotope analysis in size-based marine food web and macroecological research. Rapid Communications in Mass Spectrometry, 22 (11). pp. 1673-1680. ISSN 1097-0231

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Interacting human and environmental pressures influence the structure and dynamics of marine food webs. To describe and predict the effects of these pressures, theoretical advances need to be supported by a capacity to validate the underlying models and assumptions. Here, we review recent applications of nitrogen stable isotope analysis in marine food web and macroecological research, with a focus on work that has paralleled a resurgence of interest in the development and application of size-based models. Nitrogen stable isotope data have been used to estimate intra- and inter-specific variation in trophic level, predator-prey size ratios, transfer efficiency, food chain length, relationships between predator and prey species diversity and the dynamics of energy use. Many of these estimates have contributed to the development, testing and parameterisation of food web and ecosystem models, some of which have been used to establish baselines for assessing the scale of human impacts. The interpretation of results depends on assumed fractionation but, when supported by sensitivity analyses and experimental validation, nitrogen stable isotope data provide valuable insights into the structuring of marine communities and ecosystems.

Item Type: Article
Uncontrolled Keywords: sdg 14 - life below water ,/dk/atira/pure/sustainabledevelopmentgoals/life_below_water
Faculty \ School: Faculty of Science > School of Environmental Sciences
Depositing User: Rosie Cullington
Date Deposited: 26 May 2011 15:06
Last Modified: 19 Jan 2023 14:30
DOI: 10.1002/rcm.3497

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