Brent goose colonies near snowy owls: Internest distances in relation to breeding arctic fox densities
| Autor: | B. S. Ebbinge, S. P. Kharitonov, J. de Fouw |
|---|---|
| Přispěvatelé: | Plant Animal Interactions - Animal Ecology |
| Rok vydání: | 2013 |
| Předmět: |
biology
lemmings Ecology Centrum Ecosystemen General Biochemistry Genetics and Molecular Biology The arctic Centre for Ecosystem Studies Goose Nest international biology.animal Breeding pair Dierecologie Taimyr peninsula Arctic fox Animal Ecology General Agricultural and Biological Sciences taimyr peninsula peregrine falcons rough-legged buzzards |
| Zdroj: | Biology Bulletin / Russian Academy of Sciences 40 (2013) 1 Biology Bulletin / Russian Academy of Sciences, 40(1), 45-51 Biology Bulletin, 40(1), 45-51. Izdatel'stvo Nauka |
| ISSN: | 1608-3059 1062-3590 |
| Popis: | 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 km(2), 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. DOI: 10.1134/S106235901301007X [KEYWORDS: rough-legged buzzards peregrine falcons taimyr peninsula lemmings] |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|