Grazed wet meadows are sink habitats for the southern dunlin (Calidris alpina schinzii) due to nest trampling by cattle

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dc.contributor.author Pakanen, Veli-Matti
dc.contributor.author Aikio, Sami
dc.contributor.author Luukkonen, Aappo
dc.contributor.author Koivula, Kari
dc.date.accessioned 2016-11-24T09:48:01Z
dc.date.available 2016-11-24T09:48:01Z
dc.date.issued 2016-10
dc.identifier.citation 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
dc.identifier.other PURE: 72036162
dc.identifier.other PURE UUID: 368a0b36-1410-434d-b1ae-d6d9cd43141c
dc.identifier.other WOS: 000386429200002
dc.identifier.other Scopus: 84987638485
dc.identifier.uri http://hdl.handle.net/10138/169369
dc.description.abstract 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. en
dc.format.extent 12
dc.language.iso eng
dc.relation.ispartof Ecology and Evolution
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject conservation
dc.subject dispersal
dc.subject management
dc.subject nest trampling
dc.subject recruitment
dc.subject restoration
dc.subject shorebird
dc.subject AGRI-ENVIRONMENT SCHEMES
dc.subject COASTAL MEADOWS
dc.subject AGRICULTURAL LANDSCAPES
dc.subject POPULATION-DYNAMICS
dc.subject BREEDING DISPERSAL
dc.subject APPARENT SURVIVAL
dc.subject ECOLOGICAL TRAPS
dc.subject MARKED ANIMALS
dc.subject MANAGEMENT
dc.subject WADER
dc.subject 1181 Ecology, evolutionary biology
dc.title Grazed wet meadows are sink habitats for the southern dunlin (Calidris alpina schinzii) due to nest trampling by cattle en
dc.type Article
dc.contributor.organization Finnish Museum of Natural History
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1002/ece3.2369
dc.relation.issn 2045-7758
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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