Results 21 to 30 of about 843 (168)

21st century tundra shrubification could enhance net carbon uptake of North America Arctic tundra under an RCP8.5 climate trajectory

Environmental Research Letters, 2018
Recent observed shifts in Arctic tundra shrub cover have uncertain impacts on 21st century net ecosystem carbon exchanges. Here we applied a well-tested ecosystem model, ecosys , to examine the effects of North America Arctic tundra plant dynamics on ...
Zelalem A Mekonnen, William J Riley, Robert F Grant   +2 more
doaj   +4 more sources

Plant interactions, climate, and the reindeer (Rangifer tarandus) interdependently shape vegetation in northern Finland. [PDF]

Ecol Appl
Abstract There is limited understanding on how complex interdependencies among large herbivore grazing, competitive and facilitative interactions among plants, and the changes in temperatures and precipitation shape northern boreal and subarctic ecosystems.
Stark S, Wallén H, Kurkilahti M, Pekkarinen AJ, Kumpula J.   +4 more
europepmc   +2 more sources

Space-use by feral cattle and horses shapes vegetation structure in a trophic rewilding area. [PDF]

Ecol Appl
Abstract Feral cattle (Bos taurus) and horses (Equus ferus caballus) are commonly introduced to European rewilding areas to halt vegetation succession and to conserve light‐demanding species. Yet, we still do not understand how the habitat preference of animals shapes vegetation structure at the landscape scale.
Kristensen JÅ, Buitenwerf R, Berti E, Hansen OLP, Schowanek SD, Ejrnæs R, Hansen MDD, Olsen K, Normand S, Svenning JC.   +9 more
europepmc   +2 more sources

Shrubification along Pipeline Corridors in Permafrost Regions

Forests, 2022
Pipeline corridors have been rapidly increasing in length and density because of the ever growing demand for crude oil and natural gas resources in hydrocarbon-rich permafrost regions. Pipeline engineering activities have significant implications for the permafrost environment in cold regions.
Xiaoying Jin, Huijun Jin, Xue Yang, Wenhui Wang, Shuai Huang, Shengrong Zhang, Suiqiao Yang, Xiaoying Li, Hongwei Wang, Ruixia He, Yan Li, Xinze Li, Xinyu Li   +12 more
openaire   +1 more source

Implications of alder shrub growth for alpine tundra soil properties in Interior Alaska

Arctic, Antarctic, and Alpine Research, 2023
The increase in deciduous shrub growth in response to climate change throughout the Arctic tundra has uncertain implications, in part due to a lack of field observations.
Allison M. Welch, Shawn A. Pedron, Robert Gus Jespersen, Xiaomei Xu, Brittney Martinez, Yezzen Khazindar, Nicole M. Fiore, Michael L. Goulden, Claudia I. Czimczik   +8 more
doaj   +1 more source

Will borealization of Arctic tundra herbivore communities be driven by climate warming or vegetation change? [PDF]

, 2021
Poleward shifts in species distributions are expected and frequently observed with a warming climate. In Arctic ecosystems, the strong warming trends are associated with increasing greenness and shrubification. Vertebrate herbivores have the potential to
Barrio, Isabel C., Chimal-Ballesteros, J. Adrian, Martin, Michael D., Soininen, Eeva M, Speed, James David Mervyn, Vuorinen, Katariina Elsa Maria   +5 more
core   +3 more sources

Alpine Shrubification: Juniper Encroachment into Tundra in the Ural Mountains

Forests, 2022
Snow cover is one of the most important factors affecting the regeneration and growth of shrubs in cold arctic and alpine ecosystems. In many of these cold regions, climate change in the last century is manifested not only in a rapid rise of temperature, but also in an increase in winter precipitation. For instance, in the Ural Mountains, winter turned
Andrey A. Grigoriev, Yulia V. Shalaumova, Dmitriy S. Balakin, Olga V. Erokhina, Svetlana Yu. Abdulmanova, Pavel A. Moiseev, Jesús Julio Camarero   +6 more
openaire   +2 more sources

Non-growing season plant nutrient uptake controls Arctic tundra vegetation composition under future climate

Environmental Research Letters, 2021
Plant growth and distribution in high-latitude tundra ecosystems is strongly limited by nutrient availability and is critical for quantifying centennial-scale carbon-climate interactions. However, land model representations of plant–nutrient interactions
William J Riley, Zelalem A Mekonnen, Jinyun Tang, Qing Zhu, Nicholas J Bouskill, Robert F Grant   +5 more
doaj   +1 more source

Shrubification of peatlands [PDF]

Science, 2020
Biogeography Soil is a key player in the global carbon cycle. Peatlands are important because they contain more than half of global soil carbon, much of which is sequestered in slow-decaying Sphagnum moss. Hence, there is a need to understand how peatlands will respond to the rapidly changing climate. Malhotra et al.
openaire   +1 more source

Increased CH₄ Oxidation in Arctic Tundra Ecosystems Caused by Vegetation-Mediated Soil Drying. [PDF]

Glob Chang Biol
In a warmer Arctic, vegetation changes can play a critical role in methane dynamics. Our results indicate that taller vegetation, shifts in species composition, and warmer air temperatures enhance soil aeration by increasing evapotranspiration, thereby promoting methane oxidation in surface soils.
Björkman MP, Dietrich J, Gray ML, Pesqueda A, Rudner M, Rasmussen L, White JD, Elberling B, Björk RG.   +8 more
europepmc   +2 more sources