Arid
DOI10.1111/eff.12214
Salinity and geomorphology drive long-term changes to local and regional fish assemblage attributes in the lower Pecos River, Texas
Cheek, Christopher A.1,3; Taylor, Christopher M.2
通讯作者Taylor, Christopher M.
来源期刊ECOLOGY OF FRESHWATER FISH
ISSN0906-6691
EISSN1600-0633
出版年2016
卷号25期号:3页码:340-351
英文摘要

River systems throughout arid regions worldwide have been heavily impacted by human activities, resulting in long-term ecological consequences. The lower Pecos River in the Trans-Pecos region of Texas is no exception, having undergone anthropogenic changes that include decreased flow, elevated salinity, species loss and species invasion. We compared historical and contemporary fish assemblage attributes from the Pecos River at local (site-specific) and regional (Trans-Pecos region) scales across a 24-year time period. Fish assemblage data were collected in October 1987 and 2011, by seining at 15 sites spanning 430km of the river in Texas. Additionally, we examined contemporary environmental conditions to determine species-environment relationships. We found that fish assemblages were significantly different between time periods, likely due to increased salinisation in the upper half of the study region. Decreased species richness, species replacement and increases in euryhaline species were documented in the upstream sites. Freshwater springs lower the salinity and maintain flows in the downstream reach, allowing for maintenance of the native fish fauna. Careful management of regional aquifers, irrigation practices and petroleum waste water will be necessary for protecting biodiversity and environmental flows in the lower Pecos River.


英文关键词Pecos River fish assemblage change salinisation spring flow habitat loss
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000378625100001
WOS关键词GRANDE SILVERY MINNOW ; STREAM FISHES ; FRAGMENTATION ; CYPRINODON ; PLAINS ; SALINIZATION ; ENVIRONMENT ; STRATEGIES ; ABUNDANCE ; 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/2XILL650/192483
作者单位1.Texas Tech Univ, Dept Nat Resources Management, Lubbock, TX 79409 USA;
2.Univ Texas Pan Amer, Dept Biol, Edinburg, TX 78539 USA;
3.Navajo Nation Dept Fish & Wildlife, POB 1480, Window Rock, AZ 86515 USA
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GB/T 7714
Cheek, Christopher A.,Taylor, Christopher M.. Salinity and geomorphology drive long-term changes to local and regional fish assemblage attributes in the lower Pecos River, Texas[J],2016,25(3):340-351.
APA Cheek, Christopher A.,&Taylor, Christopher M..(2016).Salinity and geomorphology drive long-term changes to local and regional fish assemblage attributes in the lower Pecos River, Texas.ECOLOGY OF FRESHWATER FISH,25(3),340-351.
MLA Cheek, Christopher A.,et al."Salinity and geomorphology drive long-term changes to local and regional fish assemblage attributes in the lower Pecos River, Texas".ECOLOGY OF FRESHWATER FISH 25.3(2016):340-351.
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