globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13940
Scopus记录号: 2-s2.0-85034045096
论文题名:
Patterns and drivers of fish extirpations in rivers of the American Southwest and Southeast
作者: Kominoski J.S.; Ruhí A.; Hagler M.M.; Petersen K.; Sabo J.L.; Sinha T.; Sankarasubramanian A.; Olden J.D.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期:3
起始页码: 1175
结束页码: 1185
语种: 英语
英文关键词: biodiversity loss ; dams ; flow regime ; global change ; imperiled species
Scopus关键词: Pisces
英文摘要: Effective conservation of freshwater biodiversity requires spatially explicit investigations of how dams and hydroclimatic alterations among climate regions may interact to drive species to extinction. We investigated how dams and hydroclimatic alterations interact with species ecological and life history traits to influence past extirpation probabilities of native freshwater fishes in the Upper and Lower Colorado River (CR), Alabama-Coosa-Tallapoosa (ACT), and Apalachicola-Chattahoochee-Flint (ACF) basins. Using long-term discharge data for continuously gaged streams and rivers, we quantified streamflow anomalies (i.e., departure “expected” streamflow) at the sub-basin scale over the past half-century. Next, we related extirpation probabilities of native fishes in both regions to streamflow anomalies, river basin characteristics, species traits, and non-native species richness using binomial logistic regression. Sub-basin extirpations in the Southwest (n = 95 Upper CR, n = 130 Lower CR) were highest in lowland mainstem rivers impacted by large dams and in desert springs. Dampened flow seasonality, increased longevity (i.e., delayed reproduction), and decreased fish egg sizes (i.e., lower parental care) were related to elevated fish extirpation probability in the Southwest. Sub-basin extirpations in the Southeast (ACT n = 46, ACF n = 22) were most prevalent in upland rivers, with flow dependency, greater age and length at maturity, isolation by dams, and greater distance upstream. Our results confirm that dams are an overriding driver of native fish species losses, irrespective of basin-wide differences in native or non-native species richness. Dams and hydrologic alterations interact with species traits to influence community disassembly, and very high extirpation risks in the Southeast are due to interactions between high dam density and species restricted ranges. Given global surges in dam building and retrofitting, increased extirpation risks should be expected unless management strategies that balance flow regulation with ecological outcomes are widely implemented. © 2017 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110500
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Department of Biological Sciences, Florida International University, Miami, FL, United States; School of Life Sciences and Julie Ann Wrigley Global Institute of Sustainability, Arizona State University, Tempe, AZ, United States; National Socio-Environmental Synthesis Center (SESYNC), University of Maryland, Annapolis, MD, United States; Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA, United States; Sponsored Research, Lewis & Clark College, Portland, OR, United States; Odum School of Ecology, University of Georgia, Athens, GA, United States; Department of Environmental Engineering, Texas A&M University – Kingsville, Kingsville, TX, United States; Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, NC, United States; School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA, United States

Recommended Citation:
Kominoski J.S.,Ruhí A.,Hagler M.M.,et al. Patterns and drivers of fish extirpations in rivers of the American Southwest and Southeast[J]. Global Change Biology,2018-01-01,24(3)
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