Results 121 to 130 of about 109,024 (352)

Reduced arctic tundra productivity linked with landform and climate change interactions

open access: yesScientific Reports, 2018
Arctic tundra ecosystems have experienced unprecedented change associated with climate warming over recent decades. Across the Pan-Arctic, vegetation productivity and surface greenness have trended positively over the period of satellite observation ...
M. Lara   +5 more
semanticscholar   +1 more source

Soil and microbial responses to wild ungulate trampling depend more on ecosystem type than trampling severity

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Physical trampling is a ubiquitous activity of walking vertebrates, but is poorly understood as a mechanism impacting biogeochemical cycling in soil. Lack of detailed knowledge of soil abiotic–biotic interactions underlying trampling effects, and the primary sources of ...
G. Adam Meyer   +3 more
wiley   +1 more source

Earth Potential Electrodes in Permafrost and Tundra [PDF]

open access: yes, 1957
Introduction : During the past two years, the authors installed a number of electrodes in the permafrost and tundra area of Point Barrow to obtain earth potential data.
Franzke, A. R., Hessler, V. P.
core   +2 more sources

Interactions between winter and summer herbivory affect spatial and temporal plant nutrient dynamics in tundra grassland communities

open access: yes, 2020
In the long-term, herbivores can alter nutrient dynamics in terrestrial ecosystems by changing the functional composition of plant communities. Here, we ask to what extent herbivores can affect plant-community nutrient dynamics in the short-term.
M. Petit Bon   +5 more
semanticscholar   +1 more source

And then there was us Et puis nous sommes apparus

open access: yesJournal of the Royal Anthropological Institute, EarlyView.
In 1987, the academic conference ‘Origins and Dispersals of Modern Humans: Behavioural and Biological Perspectives’ was held in Cambridge, UK. Subsequently referred to as the ‘Human Revolution’ conference, this meeting brought together the most prominent academics working in the field of human origins, including archaeologists and palaeoanthropologists,
Emma E. Bird   +2 more
wiley   +1 more source

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

open access: yesRemote 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   +9 more
doaj   +1 more source

Nitrate is an important nitrogen source for Arctic tundra plants

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2018
Significance How terrestrial plants use N and respond to soil N loading is central to evaluating and predicting changing ecosystem structure and function with climate warming and N pollution.
Xue‐Yan Liu   +17 more
semanticscholar   +1 more source

Cenozoic Tectonics Ignite Mitochondrial Codon Innovations Propelling Canid Body Size Evolution and Transcontinental Radiations

open access: yesIntegrative Zoology, EarlyView.
We decode mitochondrial genomes across all extant canids, revealing lineage‐specific codon optimization driven by altitude, predation, and body size. A tripartite framework integrates geological events, metabolic constraints, and adaptive radiation to explain carnivore evolution.
Xiaoyang Wu   +8 more
wiley   +1 more source

Navigating uncertainty in life cycle assessment‐based approaches to biodiversity footprinting

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract The use of life cycle assessment (LCA) methods is rapidly expanding as a means of estimating the biodiversity impacts of organisations across complex value chains. However, these methods have limitations and substantial uncertainties, which are rarely communicated in the results of LCAs.
Talitha Bromwich   +15 more
wiley   +1 more source

Phantasmic Encounters in the Arctic: Haunting Materialities Beyond the Ghosts of War

open access: yesAnthropology of Consciousness, EarlyView.
ABSTRACT In the vast north, ghostly experiences are common for locals and outsiders alike. Here, we explore how cultural‐natural attributes, like remoteness and extreme seasonal variation, compound experiences of the haunting in visceral ways. This provides the Arctic region with an unusually pronounced baseline of other‐than‐human agency, which in the
Aki Hakonen, Oula Seitsonen
wiley   +1 more source

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