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- W2144906155 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 352:205-211 (2007) - DOI: https://doi.org/10.3354/meps07071 Seabirds as environmental indicators: the advantages of combining data sets Morten Frederiksen1,3,*, Roderick A. Mavor2, Sarah Wanless1 1Centre for Ecology and Hydrology, Hill of Brathens, Banchory AB31 4BW, UK 2Joint Nature Conservation Committee, Dunnet House, 7 Thistle Place, Aberdeen AB10 1UZ, UK 3Present address: National Environmental Research Institute, Dept. of Arctic Environment, University of Aarhus, Frederiksborgvej 399, 4000 Roskilde, Denmark *Email: mfr@dmu.dk ABSTRACT: Breeding performance of seabirds reflects conditions in the marine environment, and seabirds are often considered suitable indicators because they are sensitive to variations in food supply and relatively easy to observe. However, any individual parameter (e.g. breeding success of a particular species at one site) may also be affected by drivers other than food supply, and selecting a suitable univariate indicator can be difficult, particularly if independent estimates of food availability on the appropriate scale are unavailable. We propose combining several data sets to overcome this limitation: if a given temporal pattern occurs for several parameters measured at one site, or for the same parameter measured at several sites, it is likely to reflect important spatiotemporal environmental variation, probably linked to food supply. Multivariate statistical techniques, such as principal component analysis (PCA), can be used to extract common signals from a number of intercorrelated time series. Examples from seabirds in the North Sea demonstrate that such common signals are correlated with physical and biological environmental variables. We propose a preliminary North Sea seabird index and discuss how this index could be used in ecosystem-based management. KEY WORDS: Ecological indicators · Seabirds · Food availability · Multivariate statistics · Principal component analysis Full text in pdf format PreviousNextCite this article as: Frederiksen M, Mavor RA, Wanless S (2007) Seabirds as environmental indicators: the advantages of combining data sets. Mar Ecol Prog Ser 352:205-211. https://doi.org/10.3354/meps07071 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 352. Online publication date: December 20, 2007 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2007 Inter-Research." @default.
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- W2144906155 title "Seabirds as environmental indicators: the advantages of combining data sets" @default.
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