Results 21 to 30 of about 1,657,469 (353)

Litter accumulation suppresses grass production but facilitates shrub expansion in a long‐term fenced grassland

Ecosphere
Shrub expansion is increasing in grasslands worldwide and has profound effects on biodiversity and ecosystem functions. Shrub expansion has primarily been explained by extrinsic factors such as climate change and human activities, yet the roles of ...
Yiwen Zhang, Xiaofeng Chang, Yuwei Zhang, Andreas Wilkes, Guojie Wang   +4 more
doaj   +2 more sources

Willow drives changes in arthropod communities of northwestern Alaska: ecological implications of shrub expansion

Ecosphere, 2021
Arthropods serve as complex linkages between plants and higher‐level predators in Arctic ecosystems and provide key ecosystem services such as pollination and nutrient cycling. Arctic plant communities are changing as tall woody shrubs expand onto tundra,
Molly T. McDermott, Patricia Doak, Colleen M. Handel, Greg A. Breed, Christa P. H. Mulder   +4 more
doaj   +2 more sources

Using Landsat imagery to map understory shrub expansion relative to landscape position in a mid‐Appalachian watershed [PDF]

Ecosphere, 2018
Globally, shrub expansion is an important driver of ecological change. However, most studies of shrub expansion have focused on dryland ecosystems (e.g., savannas, rangelands, grasslands), or in tundra regions (e.g., arctic, alpine). However, shrubs play
Jeff W. Atkins, Howard E. Epstein, D. L. Welsch   +2 more
openalex   +2 more sources

Expansion of deciduous tall shrubs but not evergreen dwarf shrubs inhibited by reindeer in Scandes mountain range [PDF]

Journal of Ecology, 2017
Summary One of the most palpable effects of warming in Arctic ecosystems is shrub expansion above the tree line. However, previous studies have found that reindeer can influence plant community responses to warming and inhibit shrubification of the tundra.
Tage Vowles, Bengt Gunnarsson, Ulf Molau, Thomas Hickler, Leif Klemedtsson, Robert G. Björk   +5 more
openalex   +4 more sources

Smouldering fire in a nutrient-limited wetland ecosystem: Long-lasting changes in water and soil chemistry facilitate shrub expansion into a drained burned fen

Science of the Total Environment, 2020
Wildfires are natural phenomena which regulate functioning and stability of fire-adapted ecosystems. However, their occurrence may impair the functioning of fire-susceptible ecosystems by disturbing nutrient cycling and biodiversity.
Marcin Sulwiński, Monika Mętrak, Mateusz Wilk, Małgorzata Suska‐Malawska   +3 more
openalex   +2 more sources

Modelled sensitivity of the snow regime to topography, shrub fraction and shrub height [PDF]

Hydrology and Earth System Sciences, 2014
Recent studies show that shrubs are colonizing higher latitudes and altitudes in the Arctic. Shrubs affect the wind transport, accumulation and melt of snow, but there have been few sensitivity studies of how shrub expansion might affect snowmelt rates ...
C. B. Ménard, R. Essery, J. Pomeroy
doaj   +3 more sources

Shrub Expansion Can Counteract Carbon Losses From Warming Tundra

Journal of Geophysical Research: Biogeosciences
Arctic warming is causing substantial compositional, structural, and functional changes in tundra vegetation including shrub and tree‐line expansion and densification.
Theresia Yazbeck, Gil Bohrer, O. Sonnentag, Bo Qu, Matteo Detto, Gabriel Hould‐Gosselin, Vincent Graveline, Haley Alcock, Bruno Lecavalier, Philip Marsh, Alex J. Cannon, W. Riley, Qing Zhu, F. Yuan, B. Sulman   +14 more
semanticscholar   +3 more sources

Does fire always accelerate shrub expansion in Arctic tundra? Examining a novel grass-dominated successional trajectory on the Seward Peninsula

Arctic, Antarctic, and Alpine Research, 2021
Over the last century in the circumpolar north, notable terrestrial ecosystem changes include shrub expansion and an intensifying wildfire regime. Shrub invasion into tundra may be further accelerated by wildfire disturbance, which creates opportunities ...
Teresa N. Hollingsworth, Amy Breen, Rebecca E. Hewitt, Michelle C. Mack   +3 more
openalex   +2 more sources

Patterned-ground facilitates shrub expansion in Low Arctic tundra

Environmental Research Letters, 2013
Recent expansion of tall shrubs in Low Arctic tundra is widely seen as a response to climate warming, but shrubification is not occurring as a simple function of regional climate trends.
Gerald V Frost, Howard E Epstein, Donald A Walker, Georgiy Matyshak, Ksenia Ermokhina   +4 more
doaj   +2 more sources

The soil organic carbon and its labile fractions are highest during moderate shrub expansion stage in the alpine meadow shrub expansion process

Global Ecology and Conservation
Shrub expansion has a profound influence on regional carbon cycling. However, understanding the dynamics of soil carbon fractions and their driving factors along shrub expansion gradients remains critical for accurately assessing the ecosystem's carbon ...
Xiaojuan Zhang, Hang Yang, Qiang Li, Meimei Bai, Jianchao Song, Changlin Xu, Xiaojun Yu   +6 more
doaj   +2 more sources