Results 141 to 150 of about 125,890 (374)
Boreas, EarlyView.We show that the biological assemblage of two lakes in the Hudson Bay Lowlands experienced shifts in their biological assemblages in a very similar period as inferred hydrological change; yet, we also show that both ponds also had a clear anthropogenic warming signal as demonstrated by similar results in a chironomid‐based palaeo‐temperature ...
Connor Nishikawa +3 more
wiley +1 more source
, 2010 Arctic permafrost may be adversely affected by climate change in a number of ways, so that establishing a world-wide monitoring program seems imperative. This thesis evaluates possibilities for permafrost monitoring at the example of a permafrost site on Svalbard, Norway.
openaire +3 more sources
Winter Ecosystem Respiration and Sources of CO2 From the High Arctic Tundra of Svalbard: Response to a Deeper Snow Experiment [PDF]
, 2018 Currently, there is a lack of understanding on how the magnitude and sources of carbon (C) emissions from High Arctic tundra are impacted by changing snow cover duration and depth during winter.
Cooper, EJ +5 more
core +2 more sources
Boreas, EarlyView.Here we report on the properties of a glacial sediment succession including various till facies and some subglacial meltwater deposits from a site in central Poland close to the outermost extent of the Scandinavian Ice Sheet during the last glaciation.
Piotr Hermanowski, Jan A. Piotrowski
wiley +1 more source
FOUR YEARS OF UNMANNED AERIAL SYSTEM IMAGERY REVEALS VEGETATION CHANGE IN A SUB-ARCTIC MIRE DUE TO PERMAFROST THAW [PDF]
, 2018 Warming trends in sub-arctic regions have resulted in thawing of permafrost which in turn induces change in vegetation across peatlands both in areal extent and composition. Collapse of palsas (i.e.
DelGreco, Jessica
core +1 more source
Automated delineation and morphometry of unclassified subglacial bedforms
Boreas, EarlyView.We present an automated tool for mapping and analysing subglacial bedforms using volumetric obscurance, without classification. Tested on ArcticDEM data, the method produces bedform outlines with 75% correspondence compared to manually digitized maps.
Sofyane Hesni +5 more
wiley +1 more source
Biodiversity in mountain soils above the treeline
Biological Reviews, EarlyView.ABSTRACT Biological diversity in mountain ecosystems has been increasingly studied over the last decade. This is also the case for mountain soils, but no study to date has provided an overall synthesis of the current state of knowledge. Here we fill this gap with a first global analysis of published research on cryptogams, microorganisms, and fauna in ...
Nadine Praeg +36 more
wiley +1 more source
Performance of shallow anchor in ice-rich silt [PDF]
, 2014 Thesis (M.S.) University of Alaska Fairbanks, 2014Shallow anchor systems have been widely used for decades due to their time and cost efficiency. Yet when it comes to cold regions like Alaska, new challenges caused by the harsh environment need to be ...
Lin, Chuang, 林闯
core
Arctic ScienceThis study investigates the impact of large herbivores on soil organic matter (OM) stability in Arctic permafrost and seasonally frozen ground ecosystems, focusing on the potential preservation effect of grazing. Soil samples were collected from Siberian
Torben Windirsch +5 more
doaj +1 more source
Shorter contributions to general geology 1954; Permafrost and ground water in Alaska [PDF]
, 1955 David M. Hopkins, Thor N. V. Karlstrom
openalex +1 more source