Shellfish dredging pushes a flexible avian top predator out of a marine protected area.
There is a widespread concern about the direct and indirect effects of industrial fisheries; this concern is particularly pertinent for so-called "marine protected areas" (MPAs), which should be safeguarded by national and international law. The intertidal flats of the Dutch Wadden Sea are...
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Online Access: | https://doi.org/10.1371/journal.pbio.0040376 https://doaj.org/article/0e4b84cb90f24aafbdf3dae2f2192ddb |
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ftdoajarticles:oai:doaj.org/article:0e4b84cb90f24aafbdf3dae2f2192ddb 2023-05-15T15:48:27+02:00 Shellfish dredging pushes a flexible avian top predator out of a marine protected area. Jan A van Gils Theunis Piersma Anne Dekinga Bernard Spaans Casper Kraan 2006-11-01T00:00:00Z https://doi.org/10.1371/journal.pbio.0040376 https://doaj.org/article/0e4b84cb90f24aafbdf3dae2f2192ddb EN eng Public Library of Science (PLoS) https://doi.org/10.1371/journal.pbio.0040376 https://doaj.org/toc/1544-9173 https://doaj.org/toc/1545-7885 1544-9173 1545-7885 doi:10.1371/journal.pbio.0040376 https://doaj.org/article/0e4b84cb90f24aafbdf3dae2f2192ddb PLoS Biology, Vol 4, Iss 12, p e376 (2006) Biology (General) QH301-705.5 article 2006 ftdoajarticles https://doi.org/10.1371/journal.pbio.0040376 2022-12-31T05:59:42Z There is a widespread concern about the direct and indirect effects of industrial fisheries; this concern is particularly pertinent for so-called "marine protected areas" (MPAs), which should be safeguarded by national and international law. The intertidal flats of the Dutch Wadden Sea are a State Nature Monument and are protected under the Ramsar convention and the European Union's Habitat and Birds Directives. Until 2004, the Dutch government granted permission for ~75% of the intertidal flats to be exploited by mechanical dredgers for edible cockles (Cerastoderma edule). Here we show that dredged areas belonged to the limited area of intertidal flats that were of sufficient quality for red knots (Calidris canutus islandica), a long-distance migrant molluscivore specialist, to feed. Dredging led to relatively lower settlement rates of cockles and also reduced their quality (ratio of flesh to shell). From 1998 to 2002, red knots increased gizzard mass to compensate for a gradual loss in shellfish quality, but this compensation was not sufficient and led to decreases in local survival. Therefore, the gradual destruction of the necessary intertidal resources explains both the loss of red knots from the Dutch Wadden Sea and the decline of the European wintering population. This study shows that MPAs that do not provide adequate protection from fishing may fail in their conservation objectives. Article in Journal/Newspaper Calidris canutus Directory of Open Access Journals: DOAJ Articles PLoS Biology 4 12 e376 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Biology (General) QH301-705.5 |
spellingShingle |
Biology (General) QH301-705.5 Jan A van Gils Theunis Piersma Anne Dekinga Bernard Spaans Casper Kraan Shellfish dredging pushes a flexible avian top predator out of a marine protected area. |
topic_facet |
Biology (General) QH301-705.5 |
description |
There is a widespread concern about the direct and indirect effects of industrial fisheries; this concern is particularly pertinent for so-called "marine protected areas" (MPAs), which should be safeguarded by national and international law. The intertidal flats of the Dutch Wadden Sea are a State Nature Monument and are protected under the Ramsar convention and the European Union's Habitat and Birds Directives. Until 2004, the Dutch government granted permission for ~75% of the intertidal flats to be exploited by mechanical dredgers for edible cockles (Cerastoderma edule). Here we show that dredged areas belonged to the limited area of intertidal flats that were of sufficient quality for red knots (Calidris canutus islandica), a long-distance migrant molluscivore specialist, to feed. Dredging led to relatively lower settlement rates of cockles and also reduced their quality (ratio of flesh to shell). From 1998 to 2002, red knots increased gizzard mass to compensate for a gradual loss in shellfish quality, but this compensation was not sufficient and led to decreases in local survival. Therefore, the gradual destruction of the necessary intertidal resources explains both the loss of red knots from the Dutch Wadden Sea and the decline of the European wintering population. This study shows that MPAs that do not provide adequate protection from fishing may fail in their conservation objectives. |
format |
Article in Journal/Newspaper |
author |
Jan A van Gils Theunis Piersma Anne Dekinga Bernard Spaans Casper Kraan |
author_facet |
Jan A van Gils Theunis Piersma Anne Dekinga Bernard Spaans Casper Kraan |
author_sort |
Jan A van Gils |
title |
Shellfish dredging pushes a flexible avian top predator out of a marine protected area. |
title_short |
Shellfish dredging pushes a flexible avian top predator out of a marine protected area. |
title_full |
Shellfish dredging pushes a flexible avian top predator out of a marine protected area. |
title_fullStr |
Shellfish dredging pushes a flexible avian top predator out of a marine protected area. |
title_full_unstemmed |
Shellfish dredging pushes a flexible avian top predator out of a marine protected area. |
title_sort |
shellfish dredging pushes a flexible avian top predator out of a marine protected area. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2006 |
url |
https://doi.org/10.1371/journal.pbio.0040376 https://doaj.org/article/0e4b84cb90f24aafbdf3dae2f2192ddb |
genre |
Calidris canutus |
genre_facet |
Calidris canutus |
op_source |
PLoS Biology, Vol 4, Iss 12, p e376 (2006) |
op_relation |
https://doi.org/10.1371/journal.pbio.0040376 https://doaj.org/toc/1544-9173 https://doaj.org/toc/1545-7885 1544-9173 1545-7885 doi:10.1371/journal.pbio.0040376 https://doaj.org/article/0e4b84cb90f24aafbdf3dae2f2192ddb |
op_doi |
https://doi.org/10.1371/journal.pbio.0040376 |
container_title |
PLoS Biology |
container_volume |
4 |
container_issue |
12 |
container_start_page |
e376 |
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1766383416557699072 |