Results 81 to 90 of about 109,024 (352)
Dryas aeolian landforms in Arctic deflationary tundra, central Spitsbergen
Polish Polar Research, 2020 Aeolian activity is common on ice free areas in regions with permafrost occurrence. Sparse high-Arctic tundra vegetation, modifying surface air flow and sediments transport, influences the generation of individual landforms and their assemblages ...
Borysiak Janina +2 more
doaj +1 more source
Local-scale Arctic tundra heterogeneity affects regional-scale carbon dynamics
Nature Communications, 2020 In northern Alaska nearly 65% of the terrestrial surface is composed of polygonal ground, where geomorphic tundra landforms disproportionately influence carbon and nutrient cycling over fine spatial scales.
Mark J. Lara +8 more
semanticscholar +1 more source
Nordic Journal of Botany, EarlyView.Pollen limitation, a decrease in seed production due to insufficient pollen receipt, may influence plant demography and the evolution of sexual systems. Its empirical estimation of pollen supplementation of some of the flowers on an individual is well known to be prone to overestimation due to potential resource reallocation among the individual's ...
Xia Jiang +6 more
wiley +1 more source
EFFECTS OF LAND COVER, WATER REDISTRIBUTION, AND TEMPERATURE ON ECOSYSTEM PROCESSES IN THE SOUTH PLATTE BASIN [PDF]
, 1998 Over one‐third of the land area in the South Platte Basin of Colorado, Nebraska, and Wyoming, has been converted to croplands. Irrigated cropland now comprises 8% of the basin, while dry croplands make up 31%.
Band, Larry E. +5 more
core +1 more source
Oikos, EarlyView.Grasslands, by definition, are dominated by graminoids. Nevertheless, forbs also make up a substantial part of vascular plant diversity in grasslands and are important resources of mammalian herbivores. However, forb recruitment is constrained by successful dominant graminoids, limiting access to safe sites for germination.
Gerardo Celis +5 more
wiley +1 more source
Transitions of social-ecological subsistence systems in the Arctic [PDF]
, 2017 Transitions of social-ecological systems (SES) expose governance systems to new challenges. This is particularly so in the Arctic where resource systems are increasingly subjected to global warming, industrial development and globalization which ...
Clark, Douglas A. +3 more
core +4 more sources
Arctic, Antarctic, and Alpine Research, 2020 The net change in the carbon inventory of arctic tundra remains uncertain as global warming leads to shifts in arctic water and carbon cycles. To better understand the response of arctic tundra carbon to changes in winter precipitation amount, we ...
Karyn C. DeFranco +5 more
doaj +1 more source
Permafrost and Periglacial Processes, EarlyView.ABSTRACT Across circumpolar permafrost regions, climate change is destabilizing ice‐rich hillslopes, increasing the frequency and magnitude of thaw‐driven mass wasting. This paper reviews recent studies (2013–2024) on thaw‐driven mass wasting, focusing on the processes, morphology and trajectories of geomorphic change and their implications for ...
J. M. Young +5 more
wiley +1 more source
An Ecological Study of Timberline and Alpine Areas, Mount Lincoln, Park County, Colorado [PDF]
, 1969 During the short alpine growing season of 1945 the authors had the opportunity of studying conditions and biota on Mount Lincoln, Park County, Colorado, in an attempt to evaluate the ecological conditions and animal communities of the area.
Blake, Abigail K., Blake, Irving H.
core +1 more source
Permafrost and Periglacial Processes, EarlyView.ABSTRACT In this study, the internal structure and seasonal variations of cryo‐hydrogeological features were investigated in the Fuglebekken catchment, located near the Polish Polar Station Hornsund in Svalbard. Over a few years, rising air temperatures and intensified water circulation have significantly altered the distribution, extent, and state of ...
Wawrzyniak Tomasz +3 more
wiley +1 more source