Element patterns in albatrosses and petrels: influence of trophic position, foraging range, and prey type

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 (δ15N) and spatial patterns (δ13C) 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 δ15N and δ13C, 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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