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Survival of British Sedge Warblers Acrocephalus schoenobaenus in relation to west African rainfall
Author(s) -
PEACH WILL,
BAILLIE STEPHEN,
UNDERHILL LES
Publication year - 1991
Publication title -
ibis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.933
H-Index - 80
eISSN - 1474-919X
pISSN - 0019-1019
DOI - 10.1111/j.1474-919x.1991.tb04573.x
Subject(s) - acrocephalus , warbler , geography , population , habitat , productivity , ecology , demography , biology , macroeconomics , sociology , economics
Fluctuations in the population levels and annual adult survival rates of British Sedge Warblers Acrocephalus schoenobaenus since the late 1960s are strongly correlated with indices of wet season rainfall in the west African winter quarters. Population changes are unrelated to estimates of breeding productivity in the previous year. Habitat availability in the winter quarters has probably been the main factor limiting the size of the Sedge Warbler population in Britain during the period of study.