Results 11 to 20 of about 83,284 (295)

Increased CO2 loss from vegetated drained lake tundra ecosystems due to flooding [PDF]

open access: yes, 2012
Tundra ecosystems are especially sensitive to climate change, which is particularly rapid in high northern latitudes resulting in significant alterations in temperature and soil moisture.
Gioli, Beniamino   +6 more
core   +1 more source

Implications of spatial distributions of snow mass and melt rate for snow-cover depletion: observations in a subarctic mountain catchment [PDF]

open access: yes, 2004
Spatial statistics of snow water equivalent (SWE) and melt rate were measured using spatially distributed, sequential ground surveys of depth and density in forested, shrub and alpine tundra environments over several seasons within a 185 km(2) mountain ...
Essery, R, Pomeroy, J, Toth, B
core   +1 more source

20 years of change in tundra NDVI from coupled field and satellite observations

open access: yesEnvironmental Research Letters, 2023
In 2022 we resampled normalized difference vegetation index (NDVI) along a 100 m transect in tundra near Utqiagvik, AK that had been previously measured through the 2000–2002 growing seasons, providing an opportunity to examine a 20 year NDVI change at a
K Fred Huemmrich   +6 more
doaj   +1 more source

Multi-Sensor Analysis of Snow Seasonality and a Preliminary Assessment of SAR Backscatter Sensitivity to Arctic Vegetation: Limits and Capabilities

open access: yesRemote Sensing, 2022
Snow melt timing and the last day of snow cover have a significant impact on vegetation phenology in the Svalbard archipelago. The aim of this study is to assess the seasonal variations of the snow using a multi-sensor approach and to analyze the ...
Laura Stendardi   +6 more
doaj   +1 more source

Nomenclature adjustments and new syntaxa of the arctic, alpine and oro-Mediterranean vegetation [PDF]

open access: yes, 2015
Proposte sintassonomiche e nomenclaturali per la vegetazione della Tundra alpina. Il capitolo riguardante l'alta quota appenninica è il più corposo e propone il nuovo syntaxon Leontopodio-Elynion a livello di alleanza.
DI PIETRO, ROMEO   +4 more
core   +1 more source

Increases in graminoids after three decades of change in the High Arctic

open access: yesPolar Research, 2023
Climate change portends serious implications for Arctic vegetation. Understanding these effects is likely to be enhanced with long-term observations from permanent plots. I evaluated three decades of change in tundra vegetation from 80 permanent plots on
James A. Schaefer
doaj   +1 more source

Estimation of subsurface porosities and thermal conductivities of polygonal tundra by coupled inversion of electrical resistivity, temperature, and moisture content data [PDF]

open access: yes, 2020
Studies indicate greenhouse gas emissions following permafrost thaw will amplify current rates of atmospheric warming, a process referred to as the permafrost carbon feedback.
Atchley, AL   +7 more
core   +2 more sources

CALL BROADCASTING AND AUTOMATED RECORDERS AS TOOLS FOR ANURAN SURVEYS IN A SUBARCTIC TUNDRA LANDSCAPE [PDF]

open access: yes, 2014
Relatively little is known about population ecology of anurans in arctic and subarctic tundra regions, in part because it is difficult to survey anurans in these landscapes.
Andersen, David E.   +3 more
core   +2 more sources

Relationship of cyanobacterial and algal assemblages with vegetation in the high Arctic tundra (West Spitsbergen, Svalbard Archipelago)

open access: yesPolish Polar Research, 2015
The paper presents the results of a study of cyanobacteria and green algae assemblages occurring in various tundra types determined on the basis of mosses and vascular plants and habitat conditions. The research was carried out during summer in the years
Richter Dorota   +2 more
doaj   +1 more source

Effects of multiple environmental variables on tundra ecosystem respiration in maritime Antarctica

open access: yesScientific Reports, 2018
Summertime ecosystem respiration (ER) rates through seven sites were measured at an upland tundra on Fildes Peninsula in maritime Antarctica to investigate effects of topographic gradient, vegetation types and climatic factors on tundra ER rates. Overall
Tao Bao   +4 more
doaj   +1 more source

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