Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/ece3.1627 |
Persistence at distributional edges: Columbia spotted frog habitat in the arid Great Basin, USA | |
Arkle, Robert S.; Pilliod, David S. | |
通讯作者 | Arkle, Robert S. |
来源期刊 | ECOLOGY AND EVOLUTION |
ISSN | 2045-7758 |
出版年 | 2015 |
卷号 | 5期号:17页码:3704-3724 |
英文摘要 | A common challenge in the conservation of broadly distributed, yet imperiled species is understanding which factors facilitate persistence at distributional edges, locations where populations are often vulnerable to extirpation due to changes in climate, land use, or distributions of other species. For Columbia spotted frogs (Rana luteiventris) in the Great Basin (USA), a genetically distinct population segment of conservation concern, we approached this problem by examining (1) landscape-scale habitat availability and distribution, (2) water body-scale habitat associations, and (3) resource management-identified threats to persistence. We found that areas with perennial aquatic habitat and suitable climate are extremely limited in the southern portion of the species’ range. Within these suitable areas, native and non-native predators (trout and American bullfrogs [Lithobates catesbeianus]) are widespread and may further limit habitat availability in upper- and lower-elevation areas, respectively. At the water body scale, spotted frog occupancy was associated with deeper sites containing abundant emergent vegetation and nontrout fish species. Streams with American beaver (Castor canadensis) frequently had these structural characteristics and were significantly more likely to be occupied than ponds, lakes, streams without beaver, or streams with inactive beaver ponds, highlighting the importance of active manipulation of stream environments by beaver. Native and non-native trout reduced the likelihood of spotted frog occupancy, especially where emergent vegetation cover was sparse. Intensive livestock grazing, low aquatic connectivity, and ephemeral hydroperiods were also negatively associated with spotted frog occupancy. We conclude that persistence of this species at the arid end of its range has been largely facilitated by habitat stability (i.e., permanent hydroperiod), connectivity, predator-free refugia, and a commensalistic interaction with an ecosystem engineer. Beaver-induced changes to habitat quality, stability, and connectivity may increase spotted frog population resistance and resilience to seasonal drought, grazing, non-native predators, and climate change, factors which threaten local or regional persistence. |
英文关键词 | American beaver Amphibian Castor canadensis habitat association habitat availability North America occupancy Rana luteiventris species distribution trout |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000361010200016 |
WOS关键词 | BEAVER CASTOR-CANADENSIS ; RANA-LUTEIVENTRIS ; BATRACHOCHYTRIUM-DENDROBATIDIS ; PATCH CHARACTERISTICS ; AMPHIBIAN PATHOGEN ; CHYTRID FUNGUS ; POPULATION ; OCCUPANCY ; CLIMATE ; MODELS |
WOS类目 | Ecology ; Evolutionary Biology |
WOS研究方向 | Environmental Sciences & Ecology ; Evolutionary Biology |
来源机构 | United States Geological Survey |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/186841 |
作者单位 | US Geol Survey, Forest & Rangeland Ecosyst Sci Ctr, Boise, ID 83706 USA |
推荐引用方式 GB/T 7714 | Arkle, Robert S.,Pilliod, David S.. Persistence at distributional edges: Columbia spotted frog habitat in the arid Great Basin, USA[J]. United States Geological Survey,2015,5(17):3704-3724. |
APA | Arkle, Robert S.,&Pilliod, David S..(2015).Persistence at distributional edges: Columbia spotted frog habitat in the arid Great Basin, USA.ECOLOGY AND EVOLUTION,5(17),3704-3724. |
MLA | Arkle, Robert S.,et al."Persistence at distributional edges: Columbia spotted frog habitat in the arid Great Basin, USA".ECOLOGY AND EVOLUTION 5.17(2015):3704-3724. |
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