Arid
DOI10.1111/eff.12217
Metapopulation analysis indicates native and non-native fishes respond differently to effects of wildfire on desert streams
Whitney, James E.1; Gido, Keith B.1; Pilger, Tyler J.2,3; Propst, David L.2,3; Turner, Thomas F.2,3
通讯作者Whitney, James E.
来源期刊ECOLOGY OF FRESHWATER FISH
ISSN0906-6691
EISSN1600-0633
出版年2016
卷号25期号:3页码:376-392
英文摘要

Ash flows and flooding associated with wildfires represent important but understudied sources of disturbance for fish populations. Knowledge concerning these disturbances is especially limited for larger streams where warm water species dominate. Fire-related disturbances have been hypothesised to differentially affect native and non-native fishes, although this hypothesis has only been tested for salmonids. The objective of our research was to contrast effects of uncharacteristically large wildfires followed by flooding on metapopulations of native and non-native fishes in the Gila River of southwest New Mexico. Probabilities of occupancy, colonisation and local extinction of fishes were calculated across sites before and during disturbance and were also measured across a broader spatial scale during disturbance to identify potential refuge locations. Occupancy was higher for native fishes than non-natives, but multiple wildfire and flood events increased extinction probabilities of native species. Responses of non-native species to wildfires were mixed; extinction of non-native salmonids increased during disturbance, while extinction of several warm water species remained unchanged or decreased. Several undisturbed sites were poor refugia for natives as they were impacted by non-native piscivores, dewatering, and fragmentation. However, despite exposure to multiple disturbances, sites located in large tributary and valley reaches were consistently occupied by native species, suggesting these habitats provided refugia. We suggest that management actions (forest thinning; prescribed burning) that restore a more natural disturbance regime of small and less severe fires coupled with habitat remediation activities (non-native removal; decreased water withdrawal; improved connectivity) might diminish extinction risk for native fishes exposed to wildfire disturbance.


英文关键词occupancy modelling non-native fishes forest fires ash flows fish conservation
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000378625100004
WOS关键词AQUATIC ECOSYSTEMS ; TURNOVER RATES ; CLIMATE-CHANGE ; DEBRIS FLOWS ; WESTERN USA ; GILA TROUT ; FIRE ; COLONIZATION ; POPULATIONS ; HISTORY
WOS类目Fisheries ; Marine & Freshwater Biology
WOS研究方向Fisheries ; Marine & Freshwater Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/192484
作者单位1.Kansas State Univ, Divison Biol, 116 Ackert Hall, Manhattan, KS 66506 USA;
2.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA;
3.Univ New Mexico, Museum Southwestern Biol, Albuquerque, NM 87131 USA
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GB/T 7714
Whitney, James E.,Gido, Keith B.,Pilger, Tyler J.,et al. Metapopulation analysis indicates native and non-native fishes respond differently to effects of wildfire on desert streams[J],2016,25(3):376-392.
APA Whitney, James E.,Gido, Keith B.,Pilger, Tyler J.,Propst, David L.,&Turner, Thomas F..(2016).Metapopulation analysis indicates native and non-native fishes respond differently to effects of wildfire on desert streams.ECOLOGY OF FRESHWATER FISH,25(3),376-392.
MLA Whitney, James E.,et al."Metapopulation analysis indicates native and non-native fishes respond differently to effects of wildfire on desert streams".ECOLOGY OF FRESHWATER FISH 25.3(2016):376-392.
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