气候变化领域集成服务门户(CCPortal): Long-term monitoring of water temperature and macroinvertebrates highlights climate change threat to alpine ponds in protected areas

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DOI	10.1016/j.biocon.2024.110461
	Long-term monitoring of water temperature and macroinvertebrates highlights climate change threat to alpine ponds in protected areas
	Fahy, Julie C.; Demierre, Eliane; Oertli, Beat
发表日期	2024
ISSN	0006-3207
EISSN	1873-2917
起始页码	290
卷号	290
英文摘要	Climate change increasingly threatens alpine natural areas and notably aquatic systems. Alpine waterbodies, such as ponds, are particularly vulnerable to changes in temperature. Their biodiversity faces rising threats, especially for cold stenothermal species. Located at high elevation (>2600 m a.s.l.), the aquatic network of the Macun catchment (35 ponds and several streams) was put under a strict protection framework in 2000 (Swiss National Park) to mitigate threats to alpine biodiversity. The pond network has been regularly monitored as a sentinel of change, through aquatic macroinvertebrate sampling and physico-chemical measurements. Monitoring shows an alarmingly sharp increase in summer water temperature, rising by 4 C-degrees between 2005 and 2020 (2.7 C-degrees per decade). In contrast, nutrient concentrations have remained low and stable over these 15 years. The aquatic macroinvertebrate species richness has also been mostly stable between 2002 and 2021, with no negative impacts on the monitored cold stenotherms. Indeed, as the ponds are located at high elevation, these cold stenotherms are still living within their thermal range. Some cold stenothermal species have colonised the ponds from lower elevations, so the Macun pondscape acts as a refuge for these migrating taxa. In synthesis, our investigation highlights the alarming abiotic condition of the high -elevation freshwater biodiversity habitats, including a sharp temperature increase. It also provides evidence that their high elevation allows theses waterbodies to remain refuges for cold stenotherms, for now. In the longer term, however, a tipping point is likely to be reached, with a potential collapse of cold stenothermal biodiversity. This demonstrates the critical need to continue longer -term monitoring of high -elevation ecosystems to assess the magnitude of the impairment and to implement suitable conservation strategies, such as enhanced protection or the creation of new suitable habitats.
英文关键词	Pondscapes; High -elevation ponds; Cold stenotherms; Boreo-alpine species; Cold -specialist species
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:001176151500001
来源期刊	BIOLOGICAL CONSERVATION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290337
推荐引用方式 GB/T 7714	Fahy, Julie C.,Demierre, Eliane,Oertli, Beat. Long-term monitoring of water temperature and macroinvertebrates highlights climate change threat to alpine ponds in protected areas[J],2024,290.
APA	Fahy, Julie C.,Demierre, Eliane,&Oertli, Beat.(2024).Long-term monitoring of water temperature and macroinvertebrates highlights climate change threat to alpine ponds in protected areas.BIOLOGICAL CONSERVATION,290.
MLA	Fahy, Julie C.,et al."Long-term monitoring of water temperature and macroinvertebrates highlights climate change threat to alpine ponds in protected areas".BIOLOGICAL CONSERVATION 290(2024).