Brent goose colonies near snowy owls: Internest distances in relation to breeding arctic fox densities

It was shown that in the years when the numbers of the Arctic foxes are high, even though the lemming numbers are high as well, Brent geese nest considerably closer to owls’ nests than in the years with low Arctic fox numbers. At values of the Arctic fox densities greater than one breeding pair per...

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Bibliographic Details
Published in:Biology bulletin of the Russian Academy of Sciences 2013, Vol.40 (1), p.45-51
Main Authors: Kharitonov, S. P, Ebbinge, B. S, de Fouw, J
Format: Article
Language:English
Subjects:
Biochemistry
Biomedical and Life Sciences
breeding
Bubo scandiacus
Cell Biology
Ecology
geese
lemmings
Life Sciences
nests
peregrine falcons
rough-legged buzzards
taimyr peninsula
Vulpes lagopus
Zoology
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Summary:It was shown that in the years when the numbers of the Arctic foxes are high, even though the lemming numbers are high as well, Brent geese nest considerably closer to owls’ nests than in the years with low Arctic fox numbers. At values of the Arctic fox densities greater than one breeding pair per 20 km², the factor of lemming numbers ceases to affect the distance between owl and geese nests. This distance becomes dependent on the Arctic fox density (numbers). When the Arctic fox density is greater than the pronounced threshold, the owl-Brent internest distance is inversely and linearly related to the Arctic fox density.
ISSN:1062-3590
1608-3059
DOI:10.1134/S106235901301007X