Results 31 to 40 of about 1,188,588 (171)

Solar Radiation Transfer Through a Subarctic Shrub Canopy [PDF]

open access: yes, 2007
Much of the low Arctic is covered with shrubs that are partially buried by snow in winter and become exposed during melt. This study presents measurements and modeling of shortwave radiation reflection and extinction by a deciduous shrub canopy emerging ...
D. Bewley   +5 more
core   +1 more source

The snow and the willows : the ecological responses of the alpine dwarf shrub "Salix herbacea" to climate change [PDF]

open access: yes, 2014
Current changes in shrub abundance in alpine and arctic tundra ecosystems are primarily driven by warming, changes in snow cover time and shifts in biotic interactions.
Wheeler, Julia Anne Charlotte
core   +1 more source

Notes on invasive and expansive trees and shrubs [PDF]

open access: yesJournal of Forest Science, 2005
Expansion and invasion of plants indicate successful colonization and competitive abilities of species. There are fewer invasive and expansive woody plants than herbs. Main expansive (native species) trees and shrubs are Acer platanoides, Acer pseudoplatanus, Clematis vitalba, Crataegus sp. div., Fraxinus excelsior, Prunus spinosa, Rubus sp.
openaire   +2 more sources

Differential physiological responses to environmental change promote woody shrub expansion [PDF]

open access: yesEcology and Evolution, 2013
AbstractDirect and indirect effects of warming are increasingly modifying the carbon‐rich vegetation and soils of the Arctic tundra, with important implications for the terrestrial carbon cycle. Understanding the biological and environmental influences on the processes that regulate foliar carbon cycling in tundra species is essential for predicting ...
Heskel, Mary A   +7 more
openaire   +3 more sources

Shrub growth and expansion in the Arctic tundra: an assessment of controlling factors using an evidence-based approach

open access: yesEnvironmental Research Letters, 2017
Woody shrubs have increased in biomass and expanded into new areas throughout the Pan-Arctic tundra biome in recent decades, which has been linked to a biome-wide observed increase in productivity.
Andrew C Martin   +4 more
doaj   +1 more source

Lacon-, Shrub- and Parity-Decompositions: Characterizing Transductions of Bounded Expansion Classes

open access: yesLogical Methods in Computer Science, 2023
The concept of bounded expansion provides a robust way to capture sparse graph classes with interesting algorithmic properties. Most notably, every problem definable in first-order logic can be solved in linear time on bounded expansion graph classes.
openaire   +4 more sources

Fertile Island Soils Promote the Restoration of Shrub Patches in Burned Areas in Arid Saline Land

open access: yesFire, 2023
Shrub encroachment and expansion have been widely reported globally and are particularly severe in arid saline land. Shrubs in harsh habitats have fertile island effects, but the promoting effect of fertile island soil on shrub patch restoration remains ...
Shilin Wang, Xiaojun Wang, Wenxia Cao
doaj   +1 more source

Expansion by native shrub Euryops floribundus affects soil and vegetation in Machubeni communal land, South Africa

open access: yesScientific African, 2022
The socio-economic and environmental effects of invasive alien plants have been well documented; however, little is known about expansion by expansive native species.
Sheunesu Ruwanza
doaj   +1 more source

A Multiscale Analysis of Factors Associated with Shrub Cover and Shrub Expansion on the North Slope of Alaska [PDF]

open access: yes, 2019
Species distributions are expected to shift with changes in climate at a global scale. The northern latitudes are warming at a rate three times greater than the global mean, which has resulted in the Arctic tundra undergoing many environmental changes in
Dwight, Rosemary Anne
core   +1 more source

Declining temperature and increasing moisture sensitivity of shrub growth in the Low‐Arctic erect dwarf‐shrub tundra of western Greenland

open access: yesEcology and Evolution, 2022
Evergreen dwarf shrubs respond swiftly to warming in the cool and dry High Arctic, but their response in the warmer Low Arctic, where they are expected to be outcompeted by taller species under future warming, remains to be clarified. Here, 12,528 annual
Stef Weijers
doaj   +1 more source

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