Grazed wet meadows are sink habitats for the southern dunlin (Calidris alpina schinzii) due to nest trampling by cattle
The effect of habitat management is commonly evaluated by measuring population growth, which does not distinguish changes in reproductive success from changes in survival or the effects of immigration or emigration. Management has rarely been evaluated considering complete life cycle of the target o...
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Online Access: | http://hdl.handle.net/10138/169369 |
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/169369 2024-01-07T09:42:31+01:00 Grazed wet meadows are sink habitats for the southern dunlin (Calidris alpina schinzii) due to nest trampling by cattle Pakanen, Veli-Matti Aikio, Sami Luukkonen, Aappo Koivula, Kari Finnish Museum of Natural History 2016-11-24T09:48:01Z 12 application/pdf http://hdl.handle.net/10138/169369 eng eng Wiley 10.1002/ece3.2369 This study was supported by the Finnish Cultural, the Kone, the Emil Aaltonen and the Tauno Tonning Foundation (V. M. P.), Oulun luonnonystavat (V. M. P.), the Finnish Environment Institute, and the Academy of Finland (projects 128384 K. K., 278759 V. M. P.) Pakanen , V-M , Aikio , S , Luukkonen , A & Koivula , K 2016 , ' Grazed wet meadows are sink habitats for the southern dunlin (Calidris alpina schinzii) due to nest trampling by cattle ' , Ecology and Evolution , vol. 6 , no. 20 , pp. 7176-7187 . https://doi.org/10.1002/ece3.2369 84987638485 368a0b36-1410-434d-b1ae-d6d9cd43141c http://hdl.handle.net/10138/169369 000386429200002 cc_by openAccess info:eu-repo/semantics/openAccess conservation dispersal management nest trampling recruitment restoration shorebird AGRI-ENVIRONMENT SCHEMES COASTAL MEADOWS AGRICULTURAL LANDSCAPES POPULATION-DYNAMICS BREEDING DISPERSAL APPARENT SURVIVAL ECOLOGICAL TRAPS MARKED ANIMALS WADER 1181 Ecology evolutionary biology Article publishedVersion 2016 ftunivhelsihelda 2023-12-14T00:15:37Z The effect of habitat management is commonly evaluated by measuring population growth, which does not distinguish changes in reproductive success from changes in survival or the effects of immigration or emigration. Management has rarely been evaluated considering complete life cycle of the target organisms, including also possible negative impacts from management. We evaluated the effectiveness of cattle grazing in the restoration of coastal meadows as a breeding habitat for small and medium-sized ground-nesting birds by examining the size and demography of a southern dunlin (Calidris alpina schinzii) breeding population. Using a stochastic renesting model that includes within-season variation in breeding parameters, we evaluated the effect of grazing time and stocking rates on reproduction. The census data indicated that the population was stable when nest trampling was prevented, but detailed demographic models showed that the population on managed meadows was a sink that persisted by attracting immigrants. Even small reductions in reproductive success caused by trampling were detrimental to long-term viability. We suggest that the best management strategy is to postpone grazing to after the 19th of June, which is about three weeks later than what is optimal from the farmer's point of view. The differing results from the two evaluation approaches warn against planning and evaluating management only based on census population size and highlight the need to consider target-specific life history characteristics and demography. Even though grazing management is crucial for creating and maintaining suitable habitats, we found that it was insufficient in maintaining a viable population without additional measures that increase nest success. In the presently studied case and in populations with similar breeding cycles, impacts from nest trampling can be avoided by starting grazing when about 70% of the breeding season has past. Peer reviewed Article in Journal/Newspaper Calidris alpina Dunlin HELDA – University of Helsinki Open Repository Ecology and Evolution 6 20 7176 7187 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
conservation dispersal management nest trampling recruitment restoration shorebird AGRI-ENVIRONMENT SCHEMES COASTAL MEADOWS AGRICULTURAL LANDSCAPES POPULATION-DYNAMICS BREEDING DISPERSAL APPARENT SURVIVAL ECOLOGICAL TRAPS MARKED ANIMALS WADER 1181 Ecology evolutionary biology |
spellingShingle |
conservation dispersal management nest trampling recruitment restoration shorebird AGRI-ENVIRONMENT SCHEMES COASTAL MEADOWS AGRICULTURAL LANDSCAPES POPULATION-DYNAMICS BREEDING DISPERSAL APPARENT SURVIVAL ECOLOGICAL TRAPS MARKED ANIMALS WADER 1181 Ecology evolutionary biology Pakanen, Veli-Matti Aikio, Sami Luukkonen, Aappo Koivula, Kari Grazed wet meadows are sink habitats for the southern dunlin (Calidris alpina schinzii) due to nest trampling by cattle |
topic_facet |
conservation dispersal management nest trampling recruitment restoration shorebird AGRI-ENVIRONMENT SCHEMES COASTAL MEADOWS AGRICULTURAL LANDSCAPES POPULATION-DYNAMICS BREEDING DISPERSAL APPARENT SURVIVAL ECOLOGICAL TRAPS MARKED ANIMALS WADER 1181 Ecology evolutionary biology |
description |
The effect of habitat management is commonly evaluated by measuring population growth, which does not distinguish changes in reproductive success from changes in survival or the effects of immigration or emigration. Management has rarely been evaluated considering complete life cycle of the target organisms, including also possible negative impacts from management. We evaluated the effectiveness of cattle grazing in the restoration of coastal meadows as a breeding habitat for small and medium-sized ground-nesting birds by examining the size and demography of a southern dunlin (Calidris alpina schinzii) breeding population. Using a stochastic renesting model that includes within-season variation in breeding parameters, we evaluated the effect of grazing time and stocking rates on reproduction. The census data indicated that the population was stable when nest trampling was prevented, but detailed demographic models showed that the population on managed meadows was a sink that persisted by attracting immigrants. Even small reductions in reproductive success caused by trampling were detrimental to long-term viability. We suggest that the best management strategy is to postpone grazing to after the 19th of June, which is about three weeks later than what is optimal from the farmer's point of view. The differing results from the two evaluation approaches warn against planning and evaluating management only based on census population size and highlight the need to consider target-specific life history characteristics and demography. Even though grazing management is crucial for creating and maintaining suitable habitats, we found that it was insufficient in maintaining a viable population without additional measures that increase nest success. In the presently studied case and in populations with similar breeding cycles, impacts from nest trampling can be avoided by starting grazing when about 70% of the breeding season has past. Peer reviewed |
author2 |
Finnish Museum of Natural History |
format |
Article in Journal/Newspaper |
author |
Pakanen, Veli-Matti Aikio, Sami Luukkonen, Aappo Koivula, Kari |
author_facet |
Pakanen, Veli-Matti Aikio, Sami Luukkonen, Aappo Koivula, Kari |
author_sort |
Pakanen, Veli-Matti |
title |
Grazed wet meadows are sink habitats for the southern dunlin (Calidris alpina schinzii) due to nest trampling by cattle |
title_short |
Grazed wet meadows are sink habitats for the southern dunlin (Calidris alpina schinzii) due to nest trampling by cattle |
title_full |
Grazed wet meadows are sink habitats for the southern dunlin (Calidris alpina schinzii) due to nest trampling by cattle |
title_fullStr |
Grazed wet meadows are sink habitats for the southern dunlin (Calidris alpina schinzii) due to nest trampling by cattle |
title_full_unstemmed |
Grazed wet meadows are sink habitats for the southern dunlin (Calidris alpina schinzii) due to nest trampling by cattle |
title_sort |
grazed wet meadows are sink habitats for the southern dunlin (calidris alpina schinzii) due to nest trampling by cattle |
publisher |
Wiley |
publishDate |
2016 |
url |
http://hdl.handle.net/10138/169369 |
genre |
Calidris alpina Dunlin |
genre_facet |
Calidris alpina Dunlin |
op_relation |
10.1002/ece3.2369 This study was supported by the Finnish Cultural, the Kone, the Emil Aaltonen and the Tauno Tonning Foundation (V. M. P.), Oulun luonnonystavat (V. M. P.), the Finnish Environment Institute, and the Academy of Finland (projects 128384 K. K., 278759 V. M. P.) Pakanen , V-M , Aikio , S , Luukkonen , A & Koivula , K 2016 , ' Grazed wet meadows are sink habitats for the southern dunlin (Calidris alpina schinzii) due to nest trampling by cattle ' , Ecology and Evolution , vol. 6 , no. 20 , pp. 7176-7187 . https://doi.org/10.1002/ece3.2369 84987638485 368a0b36-1410-434d-b1ae-d6d9cd43141c http://hdl.handle.net/10138/169369 000386429200002 |
op_rights |
cc_by openAccess info:eu-repo/semantics/openAccess |
container_title |
Ecology and Evolution |
container_volume |
6 |
container_issue |
20 |
container_start_page |
7176 |
op_container_end_page |
7187 |
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1787423513953435648 |