Anderson, O.R.J., Phillips, R.A., Shore, R.F., McGill, R. , McDonald, R.A. and Bearhop, S. (2010) Element patterns in albatrosses and petrels: influence of trophic position, foraging range, and prey type. Environmental Pollution, 158(1), pp. 98-107. (doi: 10.1016/j.envpol.2009.07.040)
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Abstract
We investigated the concentrations of 22 essential and non-essential elements among a community of Procellariiformes (and their prey) to identify the extent to which trophic position and foraging range governed element accumulation. Stable isotope analysis (SIA) was used to characterise trophic (δ<sup>15</sup>N) and spatial patterns (δ<sup>13</sup>C) among species. Few consistent patterns were observed in element distributions among species and diet appeared to be highly influential in some instances. Arsenic levels in seabird red blood cells correlated with δ<sup>15</sup>N and δ<sup>13</sup>C, demonstrating the importance of trophic position and foraging range for arsenic distribution. Arsenic concentrations in prey varied significantly across taxa, and in the strength of association with δ15N values (trophic level). In most instances, element patterns in Procellariiformes showed the clearest separation among species, indicating that a combination of prey selection and other complex species-specific characteristics (e.g. moult patterns) were generally more important determining factors than trophic level per se.
| Item Type: | Articles |
|---|---|
| Keywords: | elements; procellariiformes; trophic position; diet; South Georgia |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | McGill, Dr Rona |
| Authors: | Anderson, O.R.J., Phillips, R.A., Shore, R.F., McGill, R., McDonald, R.A., and Bearhop, S. |
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences |
| College/School: | College of Science and Engineering > Scottish Universities Environmental Research Centre |
| Journal Name: | Environmental Pollution |
| Publisher: | Elsevier |
| ISSN: | 0269-7491 |
| ISSN (Online): | 1873-6424 |
| Published Online: | 26 August 2009 |
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