Research article
Inter-annual growth of Arctic charr (Salvelinus alpinus, L.) in relation to climate variation
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* Corresponding author: Kirsten S Christoffersen kchristoffersen@bi.ku.dk
1 Dept. of Medical Biochemistry and Genetics A, Panum Institute, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen, Denmark
2 Dept. of Veterinary Pathobiology, Royal Veterinary and Agricultural University, Stigbøjlen 4, DK-1870 Frederiksberg C, Denmark
3 Freshwater Biological Laboratory, Institute of Biology, University of Copenhagen, Helsingørsgade 51, DK-3400 Hillerød, Denmark
4 Dept. of Arctic Environment, National Environmental Research Institute, Frederiksborgsvej 399, P.O. Box 358, DK-4000 Roskilde, Denmark
BMC Ecology 2006, 6:10 doi:10.1186/1472-6785-6-10
Published: 27 August 2006Additional files
Additional File 1:
Principal Component Analysis of individual fish morphology and stomach content, showing the two axes of greatest explanatory power. Morphological quantitative characters included in analyses were fork length, weight, age, mouth depth, mouth depth relative to fork length and condition factor together with the following categorical characters colour, sex, gonad maturity and stomach content. Notice how Kangarssuk and Røde Elv individuals are closely scattered together indicating more homogeneous populations compared with the other sampled populations (Localities: 1 (k) = Kangarssuk; 2 (r) = Røde Elv; 3 (m/l) = Mellemsø/Langesø; 4 (p) = Porsilsø; 5 (n) = Nipisat. R2 for vertical axis = 0.75 and horizontal axis = 0.23).
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