作者：Chmura, Helen E.; Duncan, Cassandra; Burrell, Grace; Barnes, Brian M.; Buck, C. Loren; Williams, Cory T.
作者单位：University of Alaska System; University of Alaska Fairbanks; United States Department of Agriculture (USDA); United States Forest Service; University of Alaska System; University of Alaska Fairbanks; Northern Arizona University; Colorado State University System; Colorado State University Fort Collins
摘要：Climate warming is rapid in the Arctic, yet impacts to biological systems are unclear because few long-term studies linking biophysiological processes with environmental conditions exist for this data-poor region. In our study spanning 25 years in the Alaskan Arctic, we demonstrate that climate change is affecting the timing of freeze-thaw cycles in the active layer of permafrost soils and altering the physiology of arctic ground squirrels (Urocitellus parryii). Soil freeze has been delayed an...
作者：Daehn, Katrin
作者单位：Massachusetts Institute of Technology (MIT)
摘要：An expansive history offers insights into the abundant metal's many facets
作者：Eccleston-Turner, Mark; Burci, Gian-Luca; Liberman, Jonathan; Sekalala, Sharifah
作者单位：University of London; King's College London; University of Melbourne; University of Warwick
