دورية أكاديمية
The abundance of small mammals is positively linked to survival from nest depredation but negatively linked to local recruitment of a ground nesting precocial bird.
العنوان: | The abundance of small mammals is positively linked to survival from nest depredation but negatively linked to local recruitment of a ground nesting precocial bird. |
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المؤلفون: | Pakanen VM; Ecology and Genetics Research Unit University of Oulu Oulu Finland., Tornberg R; Ecology and Genetics Research Unit University of Oulu Oulu Finland., Airaksinen E; Ecology and Genetics Research Unit University of Oulu Oulu Finland., Rönkä N; Ecology and Genetics Research Unit University of Oulu Oulu Finland., Koivula K; Ecology and Genetics Research Unit University of Oulu Oulu Finland. |
المصدر: | Ecology and evolution [Ecol Evol] 2022 Sep 11; Vol. 12 (9), pp. e9292. Date of Electronic Publication: 2022 Sep 11 (Print Publication: 2022). |
نوع المنشور: | Journal Article |
اللغة: | English |
بيانات الدورية: | Publisher: Blackwell Pub. Ltd Country of Publication: England NLM ID: 101566408 Publication Model: eCollection Cited Medium: Print ISSN: 2045-7758 (Print) Linking ISSN: 20457758 NLM ISO Abbreviation: Ecol Evol Subsets: PubMed not MEDLINE |
أسماء مطبوعة: | Original Publication: [Oxford] : Blackwell Pub. Ltd. |
مستخلص: | Generalist predators using small mammals as their primary prey are suggested to shift hunting alternative prey such as bird nests, when small mammals are in short supply (the alternative prey hypothesis, APH). Nest survival and survival of young individuals should be positively linked to small mammal abundance and negatively linked to predator abundance, but little information exists from survival of chicks, especially until recruitment. We test these predictions of the APH using 13 years (2002-2014) of life history data from a ground nesting shorebird breeding on coastal meadows. We use small mammal abundance in the previous autumn as a proxy for spring predator abundance, mainly of mammalian predators. We examine whether small mammal abundance in the spring and previous autumn explain annual variation in nest survival from depredation and local recruitment of the southern dunlin Calidris alpina schinzii . As predicted by the APH, survival from nest predation was positively linked to spring small mammal abundance and negatively linked to autumn small mammal abundance. Importantly, local recruitment showed opposite responses. This counterintuitive result may be explained by density-dependent survival. When nest depredation rates are low, predators may show stronger numerical and functional responses to high shorebird chick abundance on coastal meadows, whereas in years of high nest depredation, few hatching chicks lure fewer predators. The opposite effects on nest and local recruitment demonstrate the diverse mechanisms by which population size variation in primary prey can affect dynamics of alternative prey populations. Competing Interests: The authors declare that they have no conflict of interest. (© 2022 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.) |
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فهرسة مساهمة: | Keywords: alternative prey; local recruitment; nest success; voles; wader |
سلسلة جزيئية: | Dryad 10.5061/dryad.tx95x6b1q |
تواريخ الأحداث: | Date Created: 20220916 Latest Revision: 20240904 |
رمز التحديث: | 20240904 |
مُعرف محوري في PubMed: | PMC9465198 |
DOI: | 10.1002/ece3.9292 |
PMID: | 36110877 |
قاعدة البيانات: | MEDLINE |
تدمد: | 2045-7758 |
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DOI: | 10.1002/ece3.9292 |