Data from: Environmental correlates of large-scale spatial variation in the δ13C of marine animals (and related published studies of carbon and nitrogen isotopic baselines) ...

• Main Authors: Barnes, Carolyn, Jennings, Simon, Barry, Jon T.
• Format: Dataset
• Language: English
• Published: Dryad 2016
• Subjects: Aequipecten opercularis; stable isotope analysis; isoscape; isotopic baseline; Carbon; Holocene; Marine; Jennings; Northeast Atlantic
• Online Access: https://dx.doi.org/10.5061/dryad.sj4fn; https://datadryad.org/stash/dataset/doi:10.5061/dryad.sj4fn

Carbon stable isotopes can be used to trace the sources of energy supporting food chains and to estimate the contribution of different sources to a consumer’s diet. However, the δ13C signature of a consumer is not sufficient to infer source without an appropriate isotopic baseline, because there is no way to determine if differences in consumer δ13C reflect source changes or baseline variation. Describing isotopic baselines is a considerable challenge when applying stable isotope techniques at large spatial scales and/or to interconnected food chains in open marine environments. One approach is to use filter feeding consumers to integrate the high frequency and small-scale variation in the isotopic signature of phytoplankton and provide a surrogate baseline, but it can be difficult to sample a single consumer species at large spatial scales owing to rarity and/or discontinuous distribution. Here, we use the isotopic signature of a widely distributed filter-feeder (the queen scallop Aequipecten opercularis) ... : Nitrogen and carbon stable isotope data for Queen scallop Aequipecten opercularis (Linnaeus, 1758) (AphiaID: 140687) muscle tissueThe file comprises measurements of carbon and nitrogen stable isotope composition in the adductor muscle tissue of 535 individual Queen scallop Aequipecten opercularis sampled from northeast Atlantic shelf seas in 2001 and 2010. Data collection and existing analyses are described in the following publications: (1) Barnes, C., Jennings, S. & Barry, J.T. (2009) Environmental correlates of large-scale spatial variation in the δ13C of marine animals. Estuarine, Coastal and Shelf Science, 81, 368-374; (2) Jennings, S. & Warr, K.J. (2003) Environmental correlates of large-scale spatial variation in the δ15N of marine animals. Marine Biology, 142, 1131-1140; (3) Jennings, S. & Van der Molen, J. (2015) Trophic levels of marine consumers from nitrogen stable isotope analysis: estimation and uncertainty. ICES Journal of Marine Science, 72, 2289-2300. Additional descriptions of ...