Productivity of riverine habitats may be changing for American eel

doi:10.1139/cjfas-2018-0188

	Productivity of riverine habitats may be changing for American eel
	Bowlby, Heather Dawn
刊名	CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
	2018-11
卷号	75 期号:11 页码:1773-1777
ISSN号	0706-652X
DOI	10.1139/cjfas-2018-0188
英文摘要	The panmictic population of American eel (Anguilla rostrata) is at risk, making any region that supports enhanced production important from a recovery perspective. Strong glass eel runs to a small number of rivers along the Atlantic coast of Nova Scotia are thought to indicate high productivity, partially buffering declines occurring in other regions. However, contrary to glass eel indices of recruitment, an index representing older juveniles has strongly declined in riverine habitats throughout Nova Scotia from 1995 to 2005, with evidence of substantial differences in relative abundance among watersheds. This suggests that glass eel indices may not reflect trends of older juveniles and consequently that the contribution of Atlantic coast rivers to population persistence may be overstated. More recent monitoring from two rivers shows divergent trends in juvenile eel abundance, underscoring the importance of widespread surveys to assess changes in regional productivity. Further evaluation of the watershed characteristics associated with higher juvenile abundance would aid in understanding differences in productivity among watersheds and possibly in facilitating increased spawning escapement for American eel.
WOS关键词	ATLANTIC SALMON ; MODEL SELECTION ; RECRUITMENT ; DECLINE ; ACIDIFICATION ; POPULATIONS ; MIGRATION ; ABUNDANCE ; PATTERNS ; TRENDS
WOS研究方向	Fisheries ; Marine & Freshwater Biology
语种	英语
出版者	CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
WOS记录号	WOS:000448334800001
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26980]
专题	自然资源部第一海洋研究所
通讯作者	Bowlby, Heather Dawn
作者单位	Fisheries & Oceans Canada, Bedford Inst Oceanog, 1 Challenger Dr, Dartmouth, NS B2Y 4A2, Canada
推荐引用方式 GB/T 7714	Bowlby, Heather Dawn. Productivity of riverine habitats may be changing for American eel[J]. CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES,2018,75(11):1773-1777.
APA	Bowlby, Heather Dawn.(2018).Productivity of riverine habitats may be changing for American eel.CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES,75(11),1773-1777.
MLA	Bowlby, Heather Dawn."Productivity of riverine habitats may be changing for American eel".CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES 75.11(2018):1773-1777.