Long-term declines of wader populations at the Tagus estuary, Portugal:a response to global or local factors?
Migratory wader populations face global threats, mainly related to increasing rates of habitat loss and disturbance driven by human activities. To a large extent, the long-term survival of these populations requires the conservation of networks of sites along their migratory flyways. The Tagus estua...
Published in: | Bird Conservation International |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2011
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Online Access: | https://hdl.handle.net/11370/03e0b532-088c-4b09-be62-6405180d2908 https://research.rug.nl/en/publications/03e0b532-088c-4b09-be62-6405180d2908 https://doi.org/10.1017/S0959270910000626 |
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ftunigroningenpu:oai:pure.rug.nl:publications/03e0b532-088c-4b09-be62-6405180d2908 2024-06-02T08:04:45+00:00 Long-term declines of wader populations at the Tagus estuary, Portugal:a response to global or local factors? Catry, Teresa Alves, Jose A. Andrade, Joana Costa, Helder Dias, Maria P. Fernandes, Pedro Leal, Ana Lourenco, Pedro M. Martins, Ricardo C. Moniz, Filipe Pardal, Sara Rocha, Afonso Santos, Carlos D. Encarnacao, Vitor Granadeiro, Jose P. 2011-12 https://hdl.handle.net/11370/03e0b532-088c-4b09-be62-6405180d2908 https://research.rug.nl/en/publications/03e0b532-088c-4b09-be62-6405180d2908 https://doi.org/10.1017/S0959270910000626 eng eng https://research.rug.nl/en/publications/03e0b532-088c-4b09-be62-6405180d2908 info:eu-repo/semantics/closedAccess Catry , T , Alves , J A , Andrade , J , Costa , H , Dias , M P , Fernandes , P , Leal , A , Lourenco , P M , Martins , R C , Moniz , F , Pardal , S , Rocha , A , Santos , C D , Encarnacao , V & Granadeiro , J P 2011 , ' Long-term declines of wader populations at the Tagus estuary, Portugal : a response to global or local factors? ' , Bird Conservation International , vol. 21 , no. 4 , pp. 438-453 . https://doi.org/10.1017/S0959270910000626 HUMAN DISTURBANCE CALIDRIS-CANUTUS CLIMATE-CHANGE LIMOSA-LIMOSA HABITAT LOSS ROOST-SITE SHOREBIRDS NUMBERS TRENDS IMPACT article 2011 ftunigroningenpu https://doi.org/10.1017/S0959270910000626 2024-05-07T18:53:19Z Migratory wader populations face global threats, mainly related to increasing rates of habitat loss and disturbance driven by human activities. To a large extent, the long-term survival of these populations requires the conservation of networks of sites along their migratory flyways. The Tagus estuary, Portugal, is among the most important wetlands for waders in the East Atlantic Flyway. Annual winter wader counts have been carried in this wetland since 1975 and a monthly roost-monitoring programme was implemented in 2007. Wintering populations of three out of the five most abundant species, Dunlin Calidris alpina, Grey Plover Pluvialis squatarola and Redshank Tringa totanus, showed significant population declines over the past three decades, which are most likely due to the loss and degradation of roost sites as a result of increasing human activity. The situation is unlikely to improve, as a high proportion of the wintering waders use roost sites that are situated in highly urbanised areas with no legal protection. The use of different roost sites by waders is highly variable both temporally and spatially, thus emphasizing the need for a network of good quality roost sites. Additionally, during migration, 60-80% of all the waders of the Tagus estuary concentrate at a single refuge, thus increasing the risk for wader populations during these periods. Article in Journal/Newspaper Calidris alpina Calidris canutus Limosa limosa University of Groningen research database Bird Conservation International 21 4 438 453 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
HUMAN DISTURBANCE CALIDRIS-CANUTUS CLIMATE-CHANGE LIMOSA-LIMOSA HABITAT LOSS ROOST-SITE SHOREBIRDS NUMBERS TRENDS IMPACT |
spellingShingle |
HUMAN DISTURBANCE CALIDRIS-CANUTUS CLIMATE-CHANGE LIMOSA-LIMOSA HABITAT LOSS ROOST-SITE SHOREBIRDS NUMBERS TRENDS IMPACT Catry, Teresa Alves, Jose A. Andrade, Joana Costa, Helder Dias, Maria P. Fernandes, Pedro Leal, Ana Lourenco, Pedro M. Martins, Ricardo C. Moniz, Filipe Pardal, Sara Rocha, Afonso Santos, Carlos D. Encarnacao, Vitor Granadeiro, Jose P. Long-term declines of wader populations at the Tagus estuary, Portugal:a response to global or local factors? |
topic_facet |
HUMAN DISTURBANCE CALIDRIS-CANUTUS CLIMATE-CHANGE LIMOSA-LIMOSA HABITAT LOSS ROOST-SITE SHOREBIRDS NUMBERS TRENDS IMPACT |
description |
Migratory wader populations face global threats, mainly related to increasing rates of habitat loss and disturbance driven by human activities. To a large extent, the long-term survival of these populations requires the conservation of networks of sites along their migratory flyways. The Tagus estuary, Portugal, is among the most important wetlands for waders in the East Atlantic Flyway. Annual winter wader counts have been carried in this wetland since 1975 and a monthly roost-monitoring programme was implemented in 2007. Wintering populations of three out of the five most abundant species, Dunlin Calidris alpina, Grey Plover Pluvialis squatarola and Redshank Tringa totanus, showed significant population declines over the past three decades, which are most likely due to the loss and degradation of roost sites as a result of increasing human activity. The situation is unlikely to improve, as a high proportion of the wintering waders use roost sites that are situated in highly urbanised areas with no legal protection. The use of different roost sites by waders is highly variable both temporally and spatially, thus emphasizing the need for a network of good quality roost sites. Additionally, during migration, 60-80% of all the waders of the Tagus estuary concentrate at a single refuge, thus increasing the risk for wader populations during these periods. |
format |
Article in Journal/Newspaper |
author |
Catry, Teresa Alves, Jose A. Andrade, Joana Costa, Helder Dias, Maria P. Fernandes, Pedro Leal, Ana Lourenco, Pedro M. Martins, Ricardo C. Moniz, Filipe Pardal, Sara Rocha, Afonso Santos, Carlos D. Encarnacao, Vitor Granadeiro, Jose P. |
author_facet |
Catry, Teresa Alves, Jose A. Andrade, Joana Costa, Helder Dias, Maria P. Fernandes, Pedro Leal, Ana Lourenco, Pedro M. Martins, Ricardo C. Moniz, Filipe Pardal, Sara Rocha, Afonso Santos, Carlos D. Encarnacao, Vitor Granadeiro, Jose P. |
author_sort |
Catry, Teresa |
title |
Long-term declines of wader populations at the Tagus estuary, Portugal:a response to global or local factors? |
title_short |
Long-term declines of wader populations at the Tagus estuary, Portugal:a response to global or local factors? |
title_full |
Long-term declines of wader populations at the Tagus estuary, Portugal:a response to global or local factors? |
title_fullStr |
Long-term declines of wader populations at the Tagus estuary, Portugal:a response to global or local factors? |
title_full_unstemmed |
Long-term declines of wader populations at the Tagus estuary, Portugal:a response to global or local factors? |
title_sort |
long-term declines of wader populations at the tagus estuary, portugal:a response to global or local factors? |
publishDate |
2011 |
url |
https://hdl.handle.net/11370/03e0b532-088c-4b09-be62-6405180d2908 https://research.rug.nl/en/publications/03e0b532-088c-4b09-be62-6405180d2908 https://doi.org/10.1017/S0959270910000626 |
genre |
Calidris alpina Calidris canutus Limosa limosa |
genre_facet |
Calidris alpina Calidris canutus Limosa limosa |
op_source |
Catry , T , Alves , J A , Andrade , J , Costa , H , Dias , M P , Fernandes , P , Leal , A , Lourenco , P M , Martins , R C , Moniz , F , Pardal , S , Rocha , A , Santos , C D , Encarnacao , V & Granadeiro , J P 2011 , ' Long-term declines of wader populations at the Tagus estuary, Portugal : a response to global or local factors? ' , Bird Conservation International , vol. 21 , no. 4 , pp. 438-453 . https://doi.org/10.1017/S0959270910000626 |
op_relation |
https://research.rug.nl/en/publications/03e0b532-088c-4b09-be62-6405180d2908 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1017/S0959270910000626 |
container_title |
Bird Conservation International |
container_volume |
21 |
container_issue |
4 |
container_start_page |
438 |
op_container_end_page |
453 |
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1800749403750793216 |