气候变化领域集成服务门户(CCPortal): Assessing habitat quality when forest attributes have opposing effects on abundance and detectability: A case study on Darwin's frogs

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DOI	10.1016/j.foreco.2018.10.022
	Assessing habitat quality when forest attributes have opposing effects on abundance and detectability: A case study on Darwin's frogs
	Valenzuela-Sánchez A.; Schmidt B.R.; Pérez C.; Altamirano T.; Toledo V.; Pérez Í.; Teillier S.; Cunningham A.A.; Soto-Azat C.
发表日期	2019
ISSN	0378-1127
起始页码	942
结束页码	948
卷号	432
英文摘要	Forest management can be used to increase the local abundance of species of conservation concern. To achieve this goal, managers must be sure that the relationships between the targeted forest attributes and the focal species abundance are based on robust data and inference. This is a critical issue as the same forest attributes could have opposing effects on species abundance and the detectability of individuals, impairing our ability to detect useful habitat quality surrogates and to provide correct forest management recommendations. Using spatially stratified capture-recapture models (a.k.a. multinomial N-mixture models), we evaluated the effects of stand-level forest attributes on detection probability and local abundance for the endangered Southern Darwin's frog (Rhinoderma darwinii), a forest-specialist and fully terrestrial amphibian endemic to the South American temperate forest. Our results show that an increase of stand basal area and a decrease of daily microclimatic fluctuation (i.e. an increase in structural complexity) were positively associated with the local abundance of R. darwinii. These stand-level forest attributes also explained the among-population variation in detection probability, although the relationships were opposite to those for abundance. Consequently, an analysis of raw frog counts (i.e. not adjusted for imperfect detection) did not reveal all the factors associated with local abundance. Our results provide further support to previous claims that raw counts of individuals should not be used, generally, as a proxy of abundance in species inhabiting forest ecosystems and elsewhere. More importantly, the opposite effect of forest attributes on abundance and detectability observed in our study highlights the need to use methods that quantify species-habitat relationships in a robust way and which take habitat-specific imperfect detection into account. © 2018 Elsevier B.V.
英文关键词	Amphibian; Conservation; Habitat degradation; Multinomial N-mixture model; Unmarked
语种	英语
scopus关键词	Conservation; Ecosystems; Mixtures; Amphibian; Capture-recapture models; Detection probabilities; Habitat degradation; Mixture model; Species-habitat relationships; Structural complexity; Unmarked; Forestry; abundance; amphibian; assessment method; basal area; conservation status; ecological modeling; endangered species; environmental degradation; forest ecosystem; forest management; frog; habitat quality; species conservation; species-area relationship; terrestrial environment; Conservation; Detection; Ecosystems; Forest Management; Forestry; Increments; Mixtures; Properties; Amphibia; Anura; Rhinoderma darwinii
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156325
作者单位	Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Avda. Rector Eduardo Morales s/n, Edificio Pugín, Valdivia, Chile; ONG Ranita de Darwin, Nataniel Cox 152, Santiago, Chile; Centro de Investigación para la Sustentabilidad, Facultad de Ciencias de la Vida, Universidad Andres Bello, República 440, Santiago, Chile; Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, Zurich, 8057, Switzerland; Info Fauna Karch, UniMail, Bâtiment G, Bellevaux 51, Neuchâtel, 2000, Switzerland; Fundación Huilo Huilo, Camino Internacional km 55, Neltume, Panguipulli, Chile; Departamento de Monitoreo y Desarrollo, Gerencia de Áreas Silvestres Protegidas, Corporación Nacional Forestal, Paseo Bulnes 259, of. 705, Santiago, Chile; Escuela de Arquitectura del Paisaje, Universidad Central de Chile, Toesca 1783, Santiago, Chile; Institute of Zoology, Zoological Society of London, Regent's Park, London, NW1 4RY, United Kingdom
推荐引用方式 GB/T 7714	Valenzuela-Sánchez A.,Schmidt B.R.,Pérez C.,et al. Assessing habitat quality when forest attributes have opposing effects on abundance and detectability: A case study on Darwin's frogs[J],2019,432.
APA	Valenzuela-Sánchez A..,Schmidt B.R..,Pérez C..,Altamirano T..,Toledo V..,...&Soto-Azat C..(2019).Assessing habitat quality when forest attributes have opposing effects on abundance and detectability: A case study on Darwin's frogs.Forest Ecology and Management,432.
MLA	Valenzuela-Sánchez A.,et al."Assessing habitat quality when forest attributes have opposing effects on abundance and detectability: A case study on Darwin's frogs".Forest Ecology and Management 432(2019).