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://hdl.handle.net/11370/6202d1f3-51d1-474a-a6aa-d15b9f92ddef https://research.rug.nl/en/publications/6202d1f3-51d1-474a-a6aa-d15b9f92ddef https://doi.org/10.1371/journal.pbio.0040376 https://pure.rug.nl/ws/files/57715348/journal.pbio.0040376.PDF |
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ftunigroningenpu:oai:pure.rug.nl:publications/6202d1f3-51d1-474a-a6aa-d15b9f92ddef 2024-06-02T08:04:47+00:00 Shellfish dredging pushes a flexible avian top predator out of a marine protected area van Gils, Jan A. Piersma, Theunis Dekinga, Anne Spaans, Bernard Kraan, Casper 2006-12 application/pdf https://hdl.handle.net/11370/6202d1f3-51d1-474a-a6aa-d15b9f92ddef https://research.rug.nl/en/publications/6202d1f3-51d1-474a-a6aa-d15b9f92ddef https://doi.org/10.1371/journal.pbio.0040376 https://pure.rug.nl/ws/files/57715348/journal.pbio.0040376.PDF eng eng https://research.rug.nl/en/publications/6202d1f3-51d1-474a-a6aa-d15b9f92ddef info:eu-repo/semantics/openAccess van Gils , J A , Piersma , T , Dekinga , A , Spaans , B & Kraan , C 2006 , ' Shellfish dredging pushes a flexible avian top predator out of a marine protected area ' , PLOS BIOLOGY , vol. 4 , no. 12 , 376 , pp. 2399-2404 . https://doi.org/10.1371/journal.pbio.0040376 KNOT CALIDRIS-CANUTUS AFFECTS FORAGING DECISIONS COST-BENEFIT-ANALYSIS WADDEN SEA CERASTODERMA-EDULE MACOMA-BALTHICA SHOREBIRD FOOD FISHERIES BIVALVE article 2006 ftunigroningenpu https://doi.org/10.1371/journal.pbio.0040376 2024-05-07T18:27:52Z 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 similar to 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 University of Groningen research database PLoS Biology 4 12 e376 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
KNOT CALIDRIS-CANUTUS AFFECTS FORAGING DECISIONS COST-BENEFIT-ANALYSIS WADDEN SEA CERASTODERMA-EDULE MACOMA-BALTHICA SHOREBIRD FOOD FISHERIES BIVALVE |
spellingShingle |
KNOT CALIDRIS-CANUTUS AFFECTS FORAGING DECISIONS COST-BENEFIT-ANALYSIS WADDEN SEA CERASTODERMA-EDULE MACOMA-BALTHICA SHOREBIRD FOOD FISHERIES BIVALVE van Gils, Jan A. Piersma, Theunis Dekinga, Anne Spaans, Bernard Kraan, Casper Shellfish dredging pushes a flexible avian top predator out of a marine protected area |
topic_facet |
KNOT CALIDRIS-CANUTUS AFFECTS FORAGING DECISIONS COST-BENEFIT-ANALYSIS WADDEN SEA CERASTODERMA-EDULE MACOMA-BALTHICA SHOREBIRD FOOD FISHERIES BIVALVE |
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 similar to 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 |
van Gils, Jan A. Piersma, Theunis Dekinga, Anne Spaans, Bernard Kraan, Casper |
author_facet |
van Gils, Jan A. Piersma, Theunis Dekinga, Anne Spaans, Bernard Kraan, Casper |
author_sort |
van Gils, Jan A. |
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 |
publishDate |
2006 |
url |
https://hdl.handle.net/11370/6202d1f3-51d1-474a-a6aa-d15b9f92ddef https://research.rug.nl/en/publications/6202d1f3-51d1-474a-a6aa-d15b9f92ddef https://doi.org/10.1371/journal.pbio.0040376 https://pure.rug.nl/ws/files/57715348/journal.pbio.0040376.PDF |
genre |
Calidris canutus |
genre_facet |
Calidris canutus |
op_source |
van Gils , J A , Piersma , T , Dekinga , A , Spaans , B & Kraan , C 2006 , ' Shellfish dredging pushes a flexible avian top predator out of a marine protected area ' , PLOS BIOLOGY , vol. 4 , no. 12 , 376 , pp. 2399-2404 . https://doi.org/10.1371/journal.pbio.0040376 |
op_relation |
https://research.rug.nl/en/publications/6202d1f3-51d1-474a-a6aa-d15b9f92ddef |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1371/journal.pbio.0040376 |
container_title |
PLoS Biology |
container_volume |
4 |
container_issue |
12 |
container_start_page |
e376 |
_version_ |
1800749441698758656 |