干旱区生态环境知识资源中心(Arid): Invaders induce coordinated isotopic niche shifts in native fish species

Arid

DOI	10.1139/cjfas-2019-0346
	Invaders induce coordinated isotopic niche shifts in native fish species
	Rogosch, Jane S.; Olden, Julian D.
通讯作者	Rogosch, JS
来源期刊	CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
ISSN	0706-652X
EISSN	1205-7533
出版年	2020
卷号	77 期号:8 页码:1348-1358
英文摘要	Food-web investigations inform management strategies by exposing potential interactions between native and nonnative species and anticipating likely outcomes associated with species removal efforts. We leveraged a natural gradient of compositional turnover from native-only to nonnative-only fish assemblages, combined with an intensive removal effort, to investigate underlying food-web changes in response to invasive species expansion in a Lower Colorado River tributary. Nonnative fishes caused coordinated isotopic niche displacement in native fishes by inducing resource shifts toward lower trophic positions and enriched carbon sources. By contrast, nonnative fishes did not experience reciprocal shifts when native fishes were present. Asymmetrical outcomes between native and nonnative fishes indicated species displacement may result from competitive or consumptive interactions. Native species' isotopic niches returned to higher trophic levels after nonnative green sunfish (Lepomis cyaneilus) removal, indicating removal efforts can support trophic recovery of native fishes like desert suckers (Catostomus cluricii) and roundtail chub (Gila robusta). Using stable isotope analysis in preremoval assessments provides opportunities to identify asymmetric interactions, whereas postremoval assessments could identify unintended consequences, like mesopredator release, as part of adaptive decision linking to recover native fishes.
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000557349000007
WOS关键词	FOOD-WEB DYNAMICS ; NONNATIVE FISHES ; COLORADO RIVER ; ECOLOGICAL IMPACTS ; GREEN SUNFISH ; BROOK TROUT ; REMOVAL ; RECOVERY ; STREAMS ; CONSEQUENCES
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/2XILL650/325503
作者单位	[Rogosch, Jane S.; Olden, Julian D.] Univ Washington, Sch Aquat & Fishery Sci, 1122 NE Boat St, Seattle, WA 98105 USA; [Rogosch, Jane S.] Univ Missouri, Sch Nat Resources, Missouri Cooperat Fish & Wildlife Res, 1111 E Rollins St,302 ABNR, Columbia, MO 65211 USA
推荐引用方式 GB/T 7714	Rogosch, Jane S.,Olden, Julian D.. Invaders induce coordinated isotopic niche shifts in native fish species[J],2020,77(8):1348-1358.
APA	Rogosch, Jane S.,&Olden, Julian D..(2020).Invaders induce coordinated isotopic niche shifts in native fish species.CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES,77(8),1348-1358.
MLA	Rogosch, Jane S.,et al."Invaders induce coordinated isotopic niche shifts in native fish species".CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES 77.8(2020):1348-1358.