La Tour du Valat

Article

Temporarily raised water levels on agricultural grasslands: soil improvements and benefits for foraging waders

Ernst Berend Oosterveld, Auteur ; Ivan Sebastiaan Mettrop, Auteur ; MARTEN Sikkema, Auteur

Dans Journal of Ornithology (166(4) October, 2025)

The lowering of water tables is a contributing factor to the decline of breeding waders in agricultural grasslands across Europe. Increasing droughts by climate change pose an additional and growing risk of food scarcity for waders due to the de[...]

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Article

Moreau's paradox reversed, or why insectivorous birds reach high densities in savanna trees

Leo Zwarts, Auteur ; Rob G. Bijlsma, Auteur ; Jan Van der Kamp, Auteur ; MARTEN Sikkema, Auteur ; Eddy Wymenga, Auteur

Dans Ardea (103(2) Winter, 2015)

In West Africa, tree preferences of wintering migratory birds (and African residents) were quantified in order to assess the importance of wintering conditions on distribution, abundance and trends of insectivorous woodland birds. This study enc[...]

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Article

West African mangroves harbour millions of wintering European warblers

Leo Zwarts, Auteur ; Jan Van der Kamp, Auteur ; Erik Klop, Auteur ; MARTEN Sikkema, Auteur ; Eddy Wymenga, Auteur

Dans Ardea (102(2) Fall, 2014)

Mangrove forests attract many insectivorous birds. Bird density in West African mangroves in January-March 2014 is higher in Avicennia (21 birds/ha canopy) than in Rhizophora (11 birds/ha). The Palearctic species are dominant in the most norther[...]

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Article

Use of unfertilised margins on intensively managed grassland by Black-tailed Godwit Limosa limosa and Redshank Tringa totanus chicks

Ernst B. Oosterveld, Auteur ; SCIPIO van Lierop, Auteur ; MARTEN Sikkema, Auteur

Dans Wader Study Group Bulletin (116(2) 2009)

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