2024 Arctic Report Card tracks rapid, complex Arctic change
means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.A group caribou from the Western Arctic Caribou Herd travels along a winter trail between the villages of Selawik and Ambler, Alaska, within the Selawik National Wildlife Refuge. The herd migrates through and sometimes winters on the refuge.
Populations of migratory Arctic tundra caribou have declined by 65% over the last 2-3 decades. Warmer temperatures, changes in winter snowfall, and an increasing human footprint stress Arctic caribou, altering their distribution, movements, survival and productivity.Observations also reveal stark regional differences that make local and regional environmental shifts highly unpredictable for people, plants and animals.
Autumn 2023 and summer 2024 were especially warm across the Arctic, with temperatures ranking 2nd and 3rd warmest, respectively. Plankton blooms — the base of the marine food chain — continue to increase in all Arctic regions, except for the Pacific Arctic, throughout the observational record of 2003–2024. However, in 2024, lower-than-average values were dominant across much of the Arctic.
Summer heat impacts on caribou herds are projected to magnify over the next 25-75 years, requiring shared knowledge between scientists and Indigenous communities for management strategies.
Wildfires Wildlife Climate Change Temperature Rankings Arctic Tribal Nations And Indigenous Peoples
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