Arctic Tundra
Two years with extreme and little snowfall: effects on energy partitioning and surface energy exchange in a high-Arctic tundra ecosystem
... controlling Arctic ecosystem functioning and ...high-Arctic tundra ecosystems (wet fen and dry heath) in Zackenberg, Northeast ...high-Arctic tundra ecosystem may experience a further ...
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Upscaling CH4 Fluxes Using High-Resolution Imagery in Arctic Tundra Ecosystems
... The RF classifier [66] was applied to the WorldView-2 imagery for all field sites. The RF classifier is a multiple decision tree classifier, based on classification and regression trees (CART; [67]). The algorithm ...
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Insights from mercury stable isotopes on terrestrial–atmosphere exchange of Hg(0) in the Arctic tundra
... in Arctic tundra ecosystems, centred around a 2-year field campaign on the Arctic Coastal Plain of ...Arctic tundra. We also investigated the spatial distribution of Hg in tundra ...
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Hybrid Image Classification Technique for Land-Cover Mapping in the Arctic Tundra, North Slope, Alaska
... unique arctic tundra environment with short growing season length, cloud cover, low sun angles, snow and ice cover hinders the effectiveness of remote sensing ...small arctic tundra vegetation ...
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Some Observations of Short-eared Owl, Asio flammeus , Ecology on Arctic Tundra, Yukon, Canada
... an arctic tundra raptor community on Herschel Island and Komakuk Beach, northern Yukon, ...by Arctic Fox ( Vulpes lagopus) or Red Fox (Vulpes ...and Tundra Voles (Microtus oeconomus) almost ...
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Mercury in the Arctic tundra snowpack: temporal and spatial concentration patterns and trace gas exchanges
... the Arctic, the snowpack forms the major inter- face between atmospheric and terrestrial cycling of mercury (Hg), a global ...interior Arctic tundra snowpack in northern Alaska during two winter ...
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Mapping arctic tundra vegetation communities using field spectroscopy and multispectral satellite data in North Alaska, USA
... The Arctic is currently undergoing intense changes in climate; vegetation composition and productivity are expected to respond to such ...of Arctic tundra ecosystems within the global carbon cycle, ...
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Spatial variation and linkages of soil and vegetation in the Siberian Arctic tundra – coupling field observations with remote sensing data
... the Arctic tundra is character- ized by both high amounts of soil organic carbon (Hugelius et ...of Arctic ecosystems in the future progress of climate change (Sitch et ...the Arctic, such as ...
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Estimation of surface energy fluxes in the Arctic tundra using the remote sensing thermal based Two Source Energy Balance model
... The Arctic has become generally a warmer place over the past decades leading to earlier snow melt, permafrost degradation and changing plant ...the Arctic, known as the acceleration components of the ...
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Decomposing Arctic Land Cover - Implications of heterogeneity and scale for the estimation of energy fluxes in Arctic tundra landscapes
... The Arctic land surface is changing due to a rapidly warming Arctic ...changing Arctic land surface on the surface energy balance and its consequences for the regional and global ...High ...
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Coupled land surface–subsurface hydrogeophysical inverse modeling to estimate soil organic carbon content and explore associated hydrological and thermal dynamics in the Arctic tundra
... In this study, we employed the CLM4.5 model (hereafter referred to as “CLM”), which can effectively simulate dif- ferent land surface energy balance and surface–subsurface hydrological–thermal processes (Oleson et al., ...
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Vegetation Type Dominates the Spatial Variability in CH<inf>4</inf> Emissions Across Multiple Arctic Tundra Landscapes
... tussock tundra communities on dry ridges and plateaus comprised 21% Eriophorum vaginatum tussocks and 79% inter-tussock areas (determined by visually estimating proportions of tussocks in 60 randomly placed 1 m 2 ...
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Diets of Overwintering Caribou, Rangifer tarandus , Track Decadal Changes in Arctic Tundra Vegetation
... of arctic vegetation specifically, lichen abundance is predicted to decline while vascular shrubs and grami - noids (grasses and sedges) may increase (Chapin et ...
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Impacts of temperature and soil characteristics on methane production and oxidation in Arctic tundra
... Thermal contraction processes create cracks in the tundra soil, which can fill with water that freezes to produce massive ground ice (French, 2007). This ice forms wedges that cre- ate the borders of three ...
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Soil Nutrients, Landscape Age, and Sphagno Eriophoretum vaginati Plant Communities in Arctic Moist Acidic Tundra Landscapes
... Most research exploring the relationship between soil chemistry and vegetation in Alaskan Arctic tundra landscapes has focused on describing differences in soil elemental concentrations (e.g. C, N and P) of ...
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Shelter. Because they find shelter from the severe winds and cold, many living things remain on the tundra year-round. TUNDRA ADAPTATIONS
... to tundra plants than what you see on the ...plants. Tundra plants tend to form clumps or cushions, which create milder microclimates (as much as 20 degrees warmer) to insulate growing tissues and preserve ...
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Conflict Resolution in the Arctic: A Case Study of Arctic Council Involvement
... the Arctic region. This makes them more protective of their Arctic assets than other countries in the ...the Arctic, Denmark has been pro-cooperation throughout the two first decades of the ...
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Trends and Fluctuations in Bird Populations on the Tundra at Cambridge Bay, Nunavut
... the Arctic can be influenced by a variety of physical and biolog- ical factors: temporary changes in the availability of food and/or nesting sites (determined by snow and ice coverage), timing of snow melt, ...
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Mechanism of seasonal Arctic sea ice evolution and Arctic amplification
... the Arctic (Petoukhov and Semenov, 2010; Screen and Si- monds, ...seas, Arctic ampli- fication is observed only in the latter area in ...the Arctic region, it is also crucial to understand how fast ...
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The Arctic Traits Database – a repository of Arctic benthic invertebrate traits
... The Arctic Traits Database provides an easy accessible and sound knowledge base of traits of Arctic benthic inverte- brates and will thus facilitate prospective trait-based studies for a variety of benthic ...
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