冻土带
食草动物
生态学
生物多样性
北极的
北极生态学
地衣
温带气候
生物
地理
作者
Eric Post,Elina Kaarlejärvi,Marc Macias‐Fauria,David A. Watts,Pernille Sporon Bøving,Sean M. P. Cahoon,Ratchford C. Higgins,Christian John,Jeffrey T. Kerby,Christian Torp Pedersen,Molly Post,Patrick F. Sullivan
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2023-06-23
卷期号:380 (6651): 1282-1287
标识
DOI:10.1126/science.add2679
摘要
Biodiversity is declining globally in response to multiple human stressors, including climate forcing. Nonetheless, local diversity trends are inconsistent in some taxa, obscuring contributions of local processes to global patterns. Arctic tundra diversity, including plants, fungi, and lichens, declined during a 15-year experiment that combined warming with exclusion of large herbivores known to influence tundra vegetation composition. Tundra diversity declined regardless of experimental treatment, as background growing season temperatures rose with sea ice loss. However, diversity declined slower with large herbivores than without them. This difference was associated with an increase in effective diversity of large herbivores as formerly abundant caribou declined and muskoxen increased. Efforts that promote herbivore diversity, such as rewilding, may help mitigate impacts of warming on tundra diversity.
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