Results 1 to 10 of about 83,284 (295)
Spring diet and energy intake of tundra swan (Cygnus columbianus) at the Yellow River National Wetland in Baotou, China [PDF]
PeerJ, 2022 The Yellow River National Wetland in Baotou, China is an important resting and energy replenishment place for many migratory birds, such as tundra swan (Cygnus columbianus). The energy supply of food available at stopover sites plays an important role in
Li Liu +6 more
doaj +2 more sources
Soil Systems, 2021 Soil anoxia is common in the annually thawed surface (‘active’) layer of permafrost soils, particularly when soils are saturated, and supports anaerobic microbial metabolism and methane (CH4) production.
Karl J. Romanowicz +2 more
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Diversification of Nitrogen Sources in Various Tundra Vegetation Types in the High Arctic. [PDF]
PLoS ONE, 2015 Low nitrogen availability in the high Arctic represents a major constraint for plant growth, which limits the tundra capacity for carbon retention and determines tundra vegetation types.
Grzegorz Skrzypek +5 more
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Frontiers in Microbiology, 2021 The arctic tundra is undergoing climate-driven changes and there are serious concerns related to the future of arctic biodiversity and altered ecological processes under possible climate change scenarios.
József Geml +4 more
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Environmental Research Letters, 2020 Vegetation is responding to climate change, which is especially prominent in the Arctic. Vegetation change is manifest in different ways and varies regionally, depending on the characteristics of the investigated area.
Iuliia Shevtsova +7 more
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Frequent fires in ancient shrub tundra: implications of paleorecords for arctic environmental change. [PDF]
PLoS ONE, 2008 Understanding feedbacks between terrestrial and atmospheric systems is vital for predicting the consequences of global change, particularly in the rapidly changing Arctic.
Philip E Higuera +5 more
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Frontiers in Microbiology, 2020 In maritime Antarctica, sea animals, such as penguins or seals, provide a large amount of external nitrogen input into tundra soils, which greatly impact nitrogen cycle in tundra ecosystems. Denitrification, which is closely related with the denitrifiers,
Hai-Tao Dai +4 more
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Spatiotemporal patterns of tundra fires: late-Quaternary charcoal records from Alaska [PDF]
Biogeosciences, 2015 Anthropogenic climate change has altered many ecosystem processes in the Arctic tundra and may have resulted in unprecedented fire activity. Evaluating the significance of recent fires requires knowledge from the paleofire record because observational ...
M. L. Chipman +6 more
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Arctic Science, 2016 Manual collection of accurate phenology data is time-consuming and expensive. In this study, we investigate whether repeat colour digital photography can be used (1) to identify phenological patterns, (2) to identify differences in vegetation due to ...
Alison L. Beamish +4 more
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Environmental Research Letters, 2020 Alaska’s Yukon-Kuskokwim Delta (YKD) is one of the warmest parts of the Arctic tundra biome and tundra fires are common in its upland areas. Here, we combine field measurements, Landsat observations, and quantitative cover maps for tundra plant ...
Gerald V Frost +6 more
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