Results 21 to 30 of about 9,504 (229)

Reproductive limitation mediates the response of white spruce (Picea glauca) to climate warming across the forest–tundra ecotone

Arctic Science, 2019
Shifts in the extent of the boreal forest during past warm intervals and correlations between climate and the position of the forest–tundra ecotone suggest that recent temperature increases will facilitate forest expansion into tundra ecosystems. In this
Trevor C. Lantz, Nina D. Moffat, Robert H. Fraser, Xanthe Walker   +3 more
doaj   +1 more source

Changes in Global Grassland Productivity during 1982 to 2011 Attributable to Climatic Factors

Remote Sensing, 2016
Open, Grass- and Forb-Dominated (OGFD) ecosystems, including tundra, tropical grasslands and savanna, provide habitat for both wild and domesticated large ungulate herbivores.
Qingzhu Gao, Mark W. Schwartz, Wenquan Zhu, Yunfan Wan, Xiaobo Qin, Xin Ma, Shuo Liu, Matthew A. Williamson, Casey B. Peters, Yue Li   +9 more
doaj   +1 more source

Do beaver ponds increase methane emissions along Arctic tundra streams?

Environmental Research Letters, 2023
Beaver engineering in the Arctic tundra induces hydrologic and geomorphic changes that are favorable to methane (CH _4 ) production. Beaver-mediated methane emissions are driven by inundation of existing vegetation, conversion from lotic to lentic ...
Jason A Clark, Ken D Tape, Latha Baskaran, Clayton Elder, Charles Miller, Kimberley Miner, Jonathan A O’Donnell, Benjamin M Jones   +7 more
doaj   +1 more source

A Global Methane Observation System to Reduce Uncertainty for Anthropogenic and Natural Sources and Sinks for Detecting and Attributing Climate Feedbacks

Advanced Science, EarlyView.
Conceptual illustration of a Global Ecosystem Methane Observing System (GEM‐OS) integrating satellites, aircraft, atmospheric networks, and ecosystem measurements to quantify methane emissions from anthropogenic and natural sources. The multi‐scale observing framework improves source attribution, reduces uncertainty in regional methane budgets, and ...
P. Ciais, S. Peng, J. Chang, F. Li, Q. Zhu, K. Yuan, G. Hugelius, H. Li, Y. Cai, F. Chevallier, K. Tibrewal, E. A. Kort, K. Arndt, J. Watts, B. Buma, N. Besic, P. I. Palmer, H. Cadillo‐Quiroz, E. Euskirchen, M. J. Gondwe, A. Hoyt, R. Jackson, S. Malone, D. Monteverde, S. Natali, M. Ramonet, C. Rey‐Sanchez, L. B. Sagang, E. A. G. Schuur, R. Vargas, R. Varner, Z. Zhang, B. Poulter   +32 more
wiley   +1 more source

Arctic shrubification mediates the impacts of warming climate on changes to tundra vegetation

Environmental Research Letters, 2016
Climate change has been observed to expand distributions of woody plants in many areas of arctic and alpine environments—a phenomenon called shrubification.
Heidi K Mod, Miska Luoto
doaj   +1 more source

Redirecting Monocyte Differentiation With Engineered Extracellular Vesicles for Glioma Immunotherapy

Advanced Science, EarlyView.
A dual‐targeting engineered extracellular vesicles (M1‐CS‐EVs) platform is developed to redirect monocytes differentiation into anti‐tumor macrophages for glioma immunotherapy. This nanoplatform combines CAR‐mediated tumor recognition with localized CD47 blockade, leading to synergistic immune activation and potent suppression of tumor progression in ...
Yuanwei Pan, Xuan Liu, Qian‐Fang Meng, Lei Cao, Rongrong Li, Yangtao Xu, Jing Zhang, Chenchen Zhao, Lang Rao, Chen Yu   +9 more
wiley   +1 more source

The changing carbon balance of tundra ecosystems: results from a vertically-resolved peatland biosphere model

Environmental Research Letters, 2021
An estimated 1700 Pg of carbon is frozen in the Arctic permafrost and the fate of this carbon is unclear because of the complex interaction of biophysical, ecological and biogeochemical processes that govern the Arctic carbon budget.
Erik J L Larson, Luke D Schiferl, Róisín Commane, J William Munger, Anna T Trugman, Takeshi Ise, Eugénie S Euskirchen, Steve Wofsy, Paul M Moorcroft   +8 more
doaj   +1 more source

High‐elevation endemic plants predicted to lose habitat from changing climate in Washington State

American Journal of Botany, EarlyView.
Abstract Premise High‐elevation plants face unique challenges from potential climate change impacts that will likely require upslope migration into increasingly smaller suitable habitat. This situation is particularly acute for endemic species that by definition occupy small geographic ranges.
Nicholas L. Gjording, Erik W. Ertsgaard, David E. Giblin, Iris H. Dimpsey, Owen B. Bard   +4 more
wiley   +1 more source

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

The Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source

Инициальное почвообразование в Прибрежной Антарктике: существуют ли не орнитогенные почвы?

Український антарктичний журнал, 2017
Примитивные тундровые почвы сформировались и функционируют в суровых климатиче­ских условиях. Их изучение позволяет количественно оценить инициальные стадии почвообразова­ния, что крайне важно как для понимания процесса в целом, так и для создания ...
N. Zaimenko, T. Bedernichek, V. Schwartau, L. Mykhalska, P. Khoyetskyy   +4 more
doaj   +1 more source