气候变化领域集成服务门户(CCPortal): Metal mobilization from thawing permafrost to aquatic ecosystems is driving rusting of Arctic streams

CCPortal

DOI	10.1038/s43247-024-01446-z
	Metal mobilization from thawing permafrost to aquatic ecosystems is driving rusting of Arctic streams
	O'Donnell, Jonathan A.; Carey, Michael P.; Koch, Joshua C.; Baughman, Carson; Hill, Kenneth; Zimmerman, Christian E.; Sullivan, Patrick F.; Dial, Roman; Lyons, Timothy; Cooper, David J.; Poulin, Brett A.
发表日期	2024
EISSN	2662-4435
起始页码	5
结束页码	1
卷号	5 期号:1
英文摘要	Climate change in the Arctic is altering watershed hydrologic processes and biogeochemistry. Here, we present an emergent threat to Arctic watersheds based on observations from 75 streams in Alaska's Brooks Range that recently turned orange, reflecting increased loading of iron and toxic metals. Using remote sensing, we constrain the timing of stream discoloration to the last 10 years, a period of rapid warming and snowfall, suggesting impairment is likely due to permafrost thaw. Thawing permafrost can foster chemical weathering of minerals, microbial reduction of soil iron, and groundwater transport of metals to streams. Compared to clear reference streams, orange streams have lower pH, higher turbidity, and higher sulfate, iron, and trace metal concentrations, supporting sulfide mineral weathering as a primary mobilization process. Stream discoloration was associated with dramatic declines in macroinvertebrate diversity and fish abundance. These findings have considerable implications for drinking water supplies and subsistence fisheries in rural Alaska. Recent discoloration of 75 streams in Arctic Alaska reflects increased iron and trace metal loading following climate-driven permafrost thaw and enhanced sulfide mineral weathering and may impact water quality and biodiversity, suggests satellite remote sensing and biogeochemical analyses.
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001227574700003
来源期刊	COMMUNICATIONS EARTH & ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/293434
作者单位	United States Department of the Interior; United States Department of the Interior; United States Geological Survey; United States Department of the Interior; University of Alaska System; University of Alaska Anchorage; University of California System; University of California Riverside; Colorado State University; University of California System; University of California Davis
推荐引用方式 GB/T 7714	O'Donnell, Jonathan A.,Carey, Michael P.,Koch, Joshua C.,et al. Metal mobilization from thawing permafrost to aquatic ecosystems is driving rusting of Arctic streams[J],2024,5(1).
APA	O'Donnell, Jonathan A..,Carey, Michael P..,Koch, Joshua C..,Baughman, Carson.,Hill, Kenneth.,...&Poulin, Brett A..(2024).Metal mobilization from thawing permafrost to aquatic ecosystems is driving rusting of Arctic streams.COMMUNICATIONS EARTH & ENVIRONMENT,5(1).
MLA	O'Donnell, Jonathan A.,et al."Metal mobilization from thawing permafrost to aquatic ecosystems is driving rusting of Arctic streams".COMMUNICATIONS EARTH & ENVIRONMENT 5.1(2024).