Marine species in ambient low-oxygen regions subject to double jeopardy impacts of climate change

doi:10.1111/gcb.13534

	Marine species in ambient low-oxygen regions subject to double jeopardy impacts of climate change
	Stortini, Christine H.1; Chabot, Denis 2; Shackell, Nancy L.3
刊名	GLOBAL CHANGE BIOLOGY
	2017-06
卷号	23 期号:6 页码:2284-2296
关键词	climate change commercial species cumulative impacts hypoxia local climate downscaling marine species distribution modelling warming
ISSN号	1354-1013
DOI	10.1111/gcb.13534
英文摘要	We have learned much about the impacts of warming on the productivity and distribution of marine organisms, but less about the impact of warming combined with other environmental stressors, including oxygen depletion. Also, the combined impact of multiple environmental stressors requires evaluation at the scales most relevant to resource managers. We use the Gulf of St. Lawrence, Canada, characterized by a large permanently hypoxic zone, as a case study. Species distribution models were used to predict the impact of multiple scenarios of warming and oxygen depletion on the local density of three commercially and ecologically important species. Substantial changes are projected within 20-40 years. A eurythermal depleted species already limited to shallow, oxygen-rich refuge habitat (Atlantic cod) may be relatively uninfluenced by oxygen depletion but increase in density within refuge areas with warming. A more stenothermal, deep-dwelling species (Greenland halibut) is projected to lose similar to 55% of its high-density areas under the combined impacts of warming and oxygen depletion. Another deep-dwelling, more eurythermal species (Northern shrimp) would lose similar to 4% of its high-density areas due to oxygen depletion alone, but these impacts may be buffered by warming, which may increase density by 8% in less hypoxic areas, but decrease density by similar to 20% in the warmest parts of the region. Due to local climate variability and extreme events, and that our models cannot project changes in species sensitivity to hypoxia with warming, our results should be considered conservative. We present an approach to effectively evaluate the individual and cumulative impacts of multiple environmental stressors on a species-by-species basis at the scales most relevant to managers. Our study may provide a basis for work in other low-oxygen regions and should contribute to a growing literature base in climate science, which will continue to be of support for resource managers as climate change accelerates.
WOS关键词	COD GADUS-MORHUA ; HALIBUT REINHARDTIUS-HIPPOGLOSSOIDES ; ST-LAWRENCE ESTUARY ; ATLANTIC COD ; NORTHERN GULF ; SPATIAL-DISTRIBUTION ; GEOCHEMICAL EVIDENCE ; THERMAL TOLERANCE ; GLOBAL OCEAN ; DEAD ZONES
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	WILEY
WOS记录号	WOS:000400445900014
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25701]
专题	自然资源部第一海洋研究所
通讯作者	Stortini, Christine H.
作者单位	1.Queens Univ, Dept Biol, 99 Univ Ave, Kingston, ON K7L 3N6, Canada 2.Fisheries & Oceans Canada, Maurice Lamontagne Inst, 850 Route Mer, Mont Joli, PQ G5H 3Z4, Canada 3.Fisheries & Oceans Canada, Bedford Inst Oceanog, 1 Challenger Dr,POB 1006, Dartmouth, NS B2Y 4A2, Canada
推荐引用方式 GB/T 7714	Stortini, Christine H.,Chabot, Denis,Shackell, Nancy L.. Marine species in ambient low-oxygen regions subject to double jeopardy impacts of climate change[J]. GLOBAL CHANGE BIOLOGY,2017,23(6):2284-2296.
APA	Stortini, Christine H.,Chabot, Denis,&Shackell, Nancy L..(2017).Marine species in ambient low-oxygen regions subject to double jeopardy impacts of climate change.GLOBAL CHANGE BIOLOGY,23(6),2284-2296.
MLA	Stortini, Christine H.,et al."Marine species in ambient low-oxygen regions subject to double jeopardy impacts of climate change".GLOBAL CHANGE BIOLOGY 23.6(2017):2284-2296.