Results 71 to 80 of about 1,188,588 (171)
Ecosphere, 2016 Despite predictions of poleward and upslope shifts in the distribution of breeding passerines under climate change, studies often report variable responses with some species shifting opposite of the expected direction and others showing range stability ...
Jeremy D. Mizel +3 more
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, 2021 The concept of bounded expansion provides a robust way to capture sparse graph classes with interesting algorithmic properties. Most notably, every problem definable in first-order logic can be solved in linear time on bounded expansion graph classes.
Jan Dreier, Dreier, Jan
core +1 more source
Greater effect of increasing shrub height on winter versus summer soil temperature
Environmental Research Letters, 2016 Shrub expansion is increasingly observed in arctic and subarctic environments. The development of shrub structure may significantly impact the abiotic environment at the local scale.
Mélissa Paradis +2 more
doaj +1 more source
BMC Ecology, 2018 Background Shrub cover in arctic and alpine ecosystems has increased in recent decades, and is predicted to further increase with climate change. Changes in shrub abundance may alter ecosystem carbon (C) sequestration and storage, with potential positive
Mia Vedel Sørensen +5 more
doaj +1 more source
Polar Research, 2018 Across the arctic tundra, the expansion of tall shrubs is expected to alter soil microbial activity in winter through shrub effects on snow redistribution.
Daniel Ackerman
doaj +1 more source
Environmental Research Letters, 2014 According to the 2007 IPCC report, the alpine tundra ecosystems found on low mountains of the northern hemisphere are amongst the most threatened by climate change.
Catherine Dumais +4 more
doaj +1 more source
Evaluating shrub expansion in a subarctic mountain basin using multi-temporal LiDAR data [PDF]
, 2020 High-latitude ecosystems have experienced substantial warming over the past 40 years, which is expected to continue into the foreseeable future. Consequently, an increase in vegetation growth has occurred throughout the circumpolar North as documented ...
Leipe, Sean
core +1 more source
Range Expansion of Moose in Arctic Alaska Linked to Warming and Increased Shrub Habitat
PLOS ONE, 2016 Twentieth century warming has increased vegetation productivity and shrub cover across northern tundra and treeline regions, but effects on terrestrial wildlife have not been demonstrated on a comparable scale. During this period, Alaskan moose (Alces alces gigas) extended their range from the boreal forest into tundra riparian shrub habitat; similar ...
Ken D Tape +4 more
openaire +4 more sources
Drivers of C cycling in three arctic-alpine plant communities
Arctic, Antarctic, and Alpine Research, 2019 Recent vegetation changes in arctic-alpine tundra ecosystems may affect several ecosystem processes that regulate microbe and soil functions. Such changes can alter ecosystem carbon (C) cycling with positive feedback to the atmosphere if plant C uptake ...
Mia Vedel Sørensen +4 more
doaj +1 more source
Edge effects of an expanding shrub in a coastal grassland
EcosphereShrub expansion into grassland systems is a global phenomenon. Changing land uses and climate change are the main drivers, with common outcomes including reduced species richness and loss of historical grasslands.
Emily C. Riffe +2 more
doaj +1 more source