干旱区生态环境知识资源中心(Arid): Failure to achieve recommended environmental flows coincides with declining fish populations: Long-term trends in regulated and unregulated rivers

Arid

DOI	10.1111/fwb.13966
	Failure to achieve recommended environmental flows coincides with declining fish populations: Long-term trends in regulated and unregulated rivers
	Pennock, Casey A.; Bruckerhoff, Lindsey A.; Gido, Keith B.; Barkalow, Adam L.; Breen, Matthew J.; Budy, Phaedra; Macfarlane, William W.; Propst, David L.
通讯作者	Pennock, CA
来源期刊	FRESHWATER BIOLOGY
ISSN	0046-5070
EISSN	1365-2427
出版年	2022
卷号	67 期号:9 页码:1631-1643
英文摘要	Dams can be operated to mimic components of the natural flow regime to minimise impacts on downstream ecosystems. However, infrastructure, societal needs, water management, and catchment runoff constrain which and when flow regime attributes can be mimicked. We compared fish assemblage responses, including native and non-native species, over 2 decades of managed environmental flows to those in a river retaining a relatively unaltered flow regime. Both of these arid-land rivers are within the overallocated Colorado River basin and have experienced declines in catchment runoff over the past 20 years. We predicted that fish-flow relationships would be conserved across time and between managed and unmanaged rivers. Declines in flow in both rivers coincided with declines in some native fishes, and more native and non-native fish species exhibited declines in the managed river than in the unmanaged river. Our ability to detect previously documented native fish-flow relationships diminished in the managed river system because established environmental flow targets were not met due to water management, but we detected these fish-flow relationships in the unmanaged river. Our results suggest declining catchment runoff and increased consumptive water use could reduce the effectiveness of environmental flows that have lower priority in most years.
英文关键词	climate change drought flow-ecology long-term data native fish conservation non-native species
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000822876500001
WOS关键词	FRESH-WATER BIODIVERSITY ; SAN-JUAN RIVER ; NONNATIVE FISHES ; COLORADO RIVER ; ECOLOGY RELATIONSHIPS ; ENDANGERED FISH ; RUSSIAN OLIVE ; RESPONSES ; RECOVERY ; REGIMES
WOS类目	Ecology ; Marine & Freshwater Biology
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392666
推荐引用方式 GB/T 7714	Pennock, Casey A.,Bruckerhoff, Lindsey A.,Gido, Keith B.,et al. Failure to achieve recommended environmental flows coincides with declining fish populations: Long-term trends in regulated and unregulated rivers[J],2022,67(9):1631-1643.
APA	Pennock, Casey A..,Bruckerhoff, Lindsey A..,Gido, Keith B..,Barkalow, Adam L..,Breen, Matthew J..,...&Propst, David L..(2022).Failure to achieve recommended environmental flows coincides with declining fish populations: Long-term trends in regulated and unregulated rivers.FRESHWATER BIOLOGY,67(9),1631-1643.
MLA	Pennock, Casey A.,et al."Failure to achieve recommended environmental flows coincides with declining fish populations: Long-term trends in regulated and unregulated rivers".FRESHWATER BIOLOGY 67.9(2022):1631-1643.