Hoe de draagkracht van de Waddenzee vogelaantallen op de Banc d'Arguin beparkt
The number of Red Knots Calidris canutus wintering at the Banc d'Arguin, Mauritania, has declined over the last two decades. The fact that food densities in this relatively undisturbed ecosystem have increased suggests that the reason for the declining Knot abundance needs to be sought elsewher...
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ftunivwagenin:oai:library.wur.nl:wurpubs/607982 2024-02-04T09:59:26+01:00 Hoe de draagkracht van de Waddenzee vogelaantallen op de Banc d'Arguin beparkt Van Gils, Jan A. Van Der Geest, Matthijs Kraan, Casper Folmer, Eelke O. Jansen, Erik J. Piersma, Theunis 2009 https://research.wur.nl/en/publications/hoe-de-draagkracht-van-de-waddenzee-vogelaantallen-op-de-banc-dar nl dut https://research.wur.nl/en/publications/hoe-de-draagkracht-van-de-waddenzee-vogelaantallen-op-de-banc-dar info:eu-repo/semantics/closedAccess Wageningen University & Research Limosa 82 (2009) 3-4 ISSN: 0024-3620 Life Science info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2009 ftunivwagenin 2024-01-10T23:23:21Z The number of Red Knots Calidris canutus wintering at the Banc d'Arguin, Mauritania, has declined over the last two decades. The fact that food densities in this relatively undisturbed ecosystem have increased suggests that the reason for the declining Knot abundance needs to be sought elsewhere along the flyway. With the Wadden Sea acting as a major stopover site for Red Knots wintering at the Banc d'Arguin (at least in spring), we hypothesize that the declining food stocks in the Wadden Sea are responsible for the reduced number of Red Knots wintering in Mauritania. Speculating further, we bring up the idea that the declining Red Knot population has led to reduced predation pressure on the bivalve stocks at the Banc d'Arguin, which may be the reason why food densities in Mauritania have gone up. Others have brought up an alternative, but non-mutually exclusive, hypothesis explaining this increase by an increased algal production. With production rates in individual shellfish presumably being under strong density-dependent control, the reduced predation hypothesis (in contrast to the alternative hypothesis) predicts lower per capita shellfish production rates nowadays than two decades ago. Article in Journal/Newspaper Calidris canutus Red Knot Wageningen UR (University & Research Centre): Digital Library |
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Wageningen UR (University & Research Centre): Digital Library |
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language |
Dutch |
topic |
Life Science |
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Life Science Van Gils, Jan A. Van Der Geest, Matthijs Kraan, Casper Folmer, Eelke O. Jansen, Erik J. Piersma, Theunis Hoe de draagkracht van de Waddenzee vogelaantallen op de Banc d'Arguin beparkt |
topic_facet |
Life Science |
description |
The number of Red Knots Calidris canutus wintering at the Banc d'Arguin, Mauritania, has declined over the last two decades. The fact that food densities in this relatively undisturbed ecosystem have increased suggests that the reason for the declining Knot abundance needs to be sought elsewhere along the flyway. With the Wadden Sea acting as a major stopover site for Red Knots wintering at the Banc d'Arguin (at least in spring), we hypothesize that the declining food stocks in the Wadden Sea are responsible for the reduced number of Red Knots wintering in Mauritania. Speculating further, we bring up the idea that the declining Red Knot population has led to reduced predation pressure on the bivalve stocks at the Banc d'Arguin, which may be the reason why food densities in Mauritania have gone up. Others have brought up an alternative, but non-mutually exclusive, hypothesis explaining this increase by an increased algal production. With production rates in individual shellfish presumably being under strong density-dependent control, the reduced predation hypothesis (in contrast to the alternative hypothesis) predicts lower per capita shellfish production rates nowadays than two decades ago. |
format |
Article in Journal/Newspaper |
author |
Van Gils, Jan A. Van Der Geest, Matthijs Kraan, Casper Folmer, Eelke O. Jansen, Erik J. Piersma, Theunis |
author_facet |
Van Gils, Jan A. Van Der Geest, Matthijs Kraan, Casper Folmer, Eelke O. Jansen, Erik J. Piersma, Theunis |
author_sort |
Van Gils, Jan A. |
title |
Hoe de draagkracht van de Waddenzee vogelaantallen op de Banc d'Arguin beparkt |
title_short |
Hoe de draagkracht van de Waddenzee vogelaantallen op de Banc d'Arguin beparkt |
title_full |
Hoe de draagkracht van de Waddenzee vogelaantallen op de Banc d'Arguin beparkt |
title_fullStr |
Hoe de draagkracht van de Waddenzee vogelaantallen op de Banc d'Arguin beparkt |
title_full_unstemmed |
Hoe de draagkracht van de Waddenzee vogelaantallen op de Banc d'Arguin beparkt |
title_sort |
hoe de draagkracht van de waddenzee vogelaantallen op de banc d'arguin beparkt |
publishDate |
2009 |
url |
https://research.wur.nl/en/publications/hoe-de-draagkracht-van-de-waddenzee-vogelaantallen-op-de-banc-dar |
genre |
Calidris canutus Red Knot |
genre_facet |
Calidris canutus Red Knot |
op_source |
Limosa 82 (2009) 3-4 ISSN: 0024-3620 |
op_relation |
https://research.wur.nl/en/publications/hoe-de-draagkracht-van-de-waddenzee-vogelaantallen-op-de-banc-dar |
op_rights |
info:eu-repo/semantics/closedAccess Wageningen University & Research |
_version_ |
1789964235943444480 |