干旱区生态环境知识资源中心(Arid): Connectivity and flow regime direct conservation priorities for pelagophil fishes

Arid

DOI	10.1002/aqc.3631
	Connectivity and flow regime direct conservation priorities for pelagophil fishes
	Mollenhauer, Robert; Brewer, Shannon K.; Perkin, Joshuah S.; Swedberg, Dusty; Wedgeworth, Maeghen; Steffensmeier, Zachary D.
通讯作者	Brewer, SK (corresponding author), Auburn Univ, Alabama Cooperat Fish & Wildlife Res Unit, 319 Swingle Hall, Auburn, AL 36849 USA.
来源期刊	AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
ISSN	1052-7613
EISSN	1099-0755
出版年	2021
英文摘要	Dam construction threatens global aquatic biodiversity by fragmenting stream networks and altering flow regimes. The negative effects of dams are exacerbated by increased drought periods and associated water withdrawals, especially in semi-arid regions. Stream fishes are particularly threatened owing to their mobile nature and requirement for multiple habitats to complete their life cycles. An understanding of relationships with fragmentation and flow regimes, particularly as coarse-scale (e.g. catchment) constraints on species distributions, is essential for stream fish conservation strategies. Prairie chub (Macrhybopsis australis) is a small-bodied minnow (Cyprinidae) with poorly understood ecology endemic to the North American Great Plains. Suspected declines in abundance and extirpations have resulted in conservation interest for prairie chub at state and federal levels. Prairie chub is thought to share its reproductive strategy with pelagic-broadcast spawning minnows (pelagophils). Freshwater pelagic-broadcast spawning fishes have been disproportionately affected by fragmentation and streamflow alteration globally. Relationships of prairie chub occurrence with coarse-scale fragmentation and streamflow metrics were examined in the upper Red River catchment. Occurrence probability was modelled using existing survey data, while accounting for variable detection. The modelled relationships were used to project the distribution of prairie chub in both a wet and dry climatic period. The probability of prairie chub occurrence was essentially zero at sites with higher densities of upstream dams, but increased sharply with increases in flow magnitude, downstream open mainstem, and flood duration. The projected distribution of prairie chub was broader than indicated by naive occurrence, but similar in both climatic periods. The occurrence relationships are consistent with the hypotheses of pelagic broadcast spawning and represent coarse-scale constraints that are useful for identifying areas of the stream network with higher potential for finer-scale prairie chub conservation and recovery efforts. In addition to informing pelagophil conservation, the relationships are also applicable to pelagic-broadcast spawning fishes in marine environments.
英文关键词	Bayesian catchment management damming occupancy modelling pelagic broadcast spawning prairie chub
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000665257900001
WOS关键词	ESTIMATING SITE OCCUPANCY ; LOW-HEAD DAMS ; GREAT-PLAINS ; CLIMATE-CHANGE ; LIFE-HISTORY ; RIVER-BASINS ; BIG-DATA ; ASSEMBLAGES ; HYDROPOWER ; IMPACTS
WOS类目	Environmental Sciences ; Marine & Freshwater Biology ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
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/2XILL650/352049
作者单位	[Mollenhauer, Robert; Swedberg, Dusty; Wedgeworth, Maeghen] Oklahoma State Univ, Oklahoma Cooperat Fish & Wildlife Res Unit, Stillwater, OK 74078 USA; [Brewer, Shannon K.] Oklahoma State Univ, US Geol Survey, Oklahoma Cooperat Fish & Wildlife Res Unit, Stillwater, OK 74078 USA; [Perkin, Joshuah S.; Steffensmeier, Zachary D.] Texas A&M Univ, Dept Ecol & Conservat Biol, College Stn, TX USA
推荐引用方式 GB/T 7714	Mollenhauer, Robert,Brewer, Shannon K.,Perkin, Joshuah S.,et al. Connectivity and flow regime direct conservation priorities for pelagophil fishes[J]. United States Geological Survey,2021.
APA	Mollenhauer, Robert,Brewer, Shannon K.,Perkin, Joshuah S.,Swedberg, Dusty,Wedgeworth, Maeghen,&Steffensmeier, Zachary D..(2021).Connectivity and flow regime direct conservation priorities for pelagophil fishes.AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS.
MLA	Mollenhauer, Robert,et al."Connectivity and flow regime direct conservation priorities for pelagophil fishes".AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS (2021).