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Shrub expansion in tundra ecosystems: dynamics, impacts and research priorities

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TLDR
This article used repeat photography, long-term ecological monitoring and dendrochronology to document shrub expansion in arctic, high-latitude and alpine tundra.
Abstract
Recent research using repeat photography, long-term ecological monitoring and dendrochronology has documented shrub expansion in arctic, high-latitude and alpine tundra

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Sensitivity of global terrestrial ecosystems to climate variability

TL;DR: This study provides a quantitative methodology for assessing the relative response rate of ecosystems—be they natural or with a strong anthropogenic signature—to environmental variability, which is the first step towards addressing why some regions appear to be more sensitive than others, and what impact this has on the resilience of ecosystem service provision and human well-being.
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Plot-scale evidence of tundra vegetation change and links to recent summer warming.

Sarah C. Elmendorf, +48 more
TL;DR: In this paper, remote sensing data indicate that contemporary climate warming has already resulted in increased productivity and increased productivity in the tundra biome (Tundra Tundra Bi biome).
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Characteristics, drivers and feedbacks of global greening

TL;DR: In this article, the authors examined the detection of the greening signal, its causes and its consequences, and showed that greening is pronounced over intensively farmed or afforested areas, such as in China and India, reflecting human activities.

Increased snow depth affects microbial activity and nitrogen mineralization in two Arctic tundra communities - eScholarship

TL;DR: In this paper, the authors used intact core incubations sampled periodically through the winter and following growing season to measure net N mineralization and nitrification in dry heath and in moist tussock tundra under ambient and experimentally increased snow depths.
References
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Global surface temperature change

TL;DR: The authors used satellite-observed night lights to identify measurement stations located in extreme darkness and adjust temperature trends of urban and periurban stations for nonclimatic factors, verifying that urban effects on analyzed global change are small.
Journal ArticleDOI

Observational evidence of recent change in the northern high-latitude environment

TL;DR: In this paper, the authors present asynthesis of these observations, and conclude that roughly half of the pronounced recent rise in Northern Hemispherewinter temperatures reflects shifts in atmosphericcirculation. But, such changes are not consistent with anthropogenic forcing and include generally positive phases of the North Atlantic and ArcticOscillations and extratropical responses to the El-NinoSouthern Oscillation.
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Responses of Arctic Tundra to Experimental and Observed Changes in Climate

TL;DR: In this article, the authors manipulated light, temperature, and nutrients in moist tussock tundra near Toolik Lake, Alaska to determine how global changes in these parameters might affect community and ecosystem processes.
Journal ArticleDOI

Climate change. Increasing shrub abundance in the Arctic.

TL;DR: Evidence for a widespread increase in shrub abundance over more than 320 km of Arctic landscape during the past 50 years is presented, based on a comparison of historic and modern aerial photographs.
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Global assessment of experimental climate warming on tundra vegetation: heterogeneity over space and time.

Sarah C. Elmendorf, +46 more
- 01 Feb 2012 -