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Comparing the seasonal survival of resident and migratory oystercatchers : carry-over effects of habitat quality and weather conditions

journal contribution
posted on 2012-06-01, 00:00 authored by O Duriez, B Ens, R Choquet, R Pradel, Marcel KlaassenMarcel Klaassen
Events happening in one season can affect life-history traits at (the) subsequent season(s) by carry-over effects. Wintering conditions are known to affect breeding success, but few studies have investigated carry-over effects on survival. The Eurasian oystercatcher Haematopus ostralegus is a coastal wader with sedentary populations at temperate sites and migratory populations in northern breeding grounds of Europe. We pooled continental European ringing-recovery datasets from 1975 to 2000 to estimate winter and summer survival rates of migrant and resident populations and to investigate long-term effects of winter habitat changes. During mild climatic periods, adults of both migratory and resident populations exhibited survival rates 2% lower in summer than in winter. Severe winters reduced survival rates (down to 25% reduction) and were often followed by a decline in survival during the following summer, via short-term carry-over effects. Habitat changes in the Dutch wintering grounds caused a reduction in food stocks, leading to reduced survival rates, particularly in young birds. Therefore, wintering habitat changes resulted in long-term (>10 years) 8.7 and 9.4% decrease in adult annual survival of migrant and resident populations respectively. Studying the impact of carry-over effects is crucial for understanding the life history of migratory birds and the development of conservation measures.

History

Journal

Oikos

Volume

121

Issue

6

Pagination

862 - 873

Publisher

Wiley - Blackwell Publishing

Location

Malden, Mass.

ISSN

0030-1299

eISSN

1600-0706

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2012, The Authors, Oikos, Nordic Society Oikos