气候变化领域集成服务门户(CCPortal): Warming winters threaten peripheral Arctic charr populations of Europe

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DOI	10.1007/s10584-020-02887-z
	Warming winters threaten peripheral Arctic charr populations of Europe
	Kelly S.; Moore T.N.; de Eyto E.; Dillane M.; Goulon C.; Guillard J.; Lasne E.; McGinnity P.; Poole R.; Winfield I.J.; Woolway R.I.; Jennings E.
发表日期	2020
ISSN	0165-0009
英文摘要	As the global climate warms, the fate of lacustrine fish is of huge concern, especially given their sensitivity as ectotherms to changes in water temperature. The Arctic charr (Salvelinus alpinus L.) is a salmonid with a Holarctic distribution, with peripheral populations persisting at temperate latitudes, where it is found only in sufficiently cold, deep lakes. Thus, warmer temperatures in these habitats particularly during early life stages could have catastrophic consequences on population dynamics. Here, we combined lake temperature observations, a 1-D hydrodynamic model, and a multi-decadal climate reanalysis to show coherence in warming winter water temperatures in four European charr lakes near the southernmost limit of the species’ distribution. Current maximum and mean winter temperatures are on average ~ 1 °C warmer compared to early the 1980s, and temperatures of 8.5 °C, adverse for high charr egg survival, have frequently been exceeded in recent winters. Simulations of winter lake temperatures toward century-end showed that these warming trends will continue, with further increases of 3–4 °C projected. An additional 324 total accumulated degree-days during winter is projected on average across lakes, which could impair egg quality and viability. We suggest that the perpetuating winter warming trends shown here will imperil the future status of these lakes as charr refugia and generally do not augur well for the fate of coldwater-adapted lake fish in a warming climate. © 2020, The Author(s).
英文关键词	Arctic charr; Biodiversity conservation; Climate reanalysis; General circulation model; Hydrodynamic modelling; Lake ecosystems; Winter limnology
语种	英语
scopus关键词	Climate models; Fish; Lakes; Temperature; Arctic charrs; Catastrophic consequences; Egg quality; Global climates; Hydrodynamic model; Lake temperatures; Warming climate; Water temperatures; Population distribution
来源期刊	Climatic Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147287
作者单位	Centre for Freshwater and Environmental Studies, Dundalk Institute of Technology, Louth, Ireland; Marine Institute, Furnace, Newport, Mayo, Ireland; University of Savoie Mont Blanc, INRAE, CARRTEL, Thonon-les-Bains, France; ESE, Ecology and Ecosystem Health, Agrocampus-Ouest, INRAE, Rennes, France; School of Biological, Earth & Environmental Sciences, University College Cork, Cork, Ireland; Lake Ecosystems Group, UK Centre for Ecology & Hydrology, Lancaster Environment Centre, Lancashire, United Kingdom; European Space Agency Climate Office, ECSAT, Harwell Campus, Didcot, Oxfordshire, United Kingdom
推荐引用方式 GB/T 7714	Kelly S.,Moore T.N.,de Eyto E.,et al. Warming winters threaten peripheral Arctic charr populations of Europe[J],2020.
APA	Kelly S..,Moore T.N..,de Eyto E..,Dillane M..,Goulon C..,...&Jennings E..(2020).Warming winters threaten peripheral Arctic charr populations of Europe.Climatic Change.
MLA	Kelly S.,et al."Warming winters threaten peripheral Arctic charr populations of Europe".Climatic Change (2020).