Results 51 to 60 of about 83,284 (295)

Assessment of LiDAR and Spectral Techniques for High-Resolution Mapping of Sporadic Permafrost on the Yukon-Kuskokwim Delta, Alaska

Remote Sensing, 2018
Western Alaska’s Yukon-Kuskokwim Delta (YKD) spans nearly 67,200 km2 and is among the largest and most productive coastal wetland ecosystems in the pan-Arctic. Permafrost currently forms extensive elevated plateaus on abandoned floodplain deposits of the
Matthew A. Whitley, Gerald V. Frost, M. Torre Jorgenson, Matthew J. Macander, Chris V. Maio, Samantha G. Winder   +5 more
doaj   +1 more source

Evolution of postglacial vegetation in the Western Laptev Sea region (Siberian Arctic) [PDF]

, 2007
On the basis of a detailed study of the pollen-spore spectra and a detailed radiocarbon chronology of a sediment core obtained from the western outer Laptev Sea shelf, the long-term and high-resolution changes of vegetation in the northwestern Laptev Sea
Bauch, Henning, Kassens, Heidemarie, Polyakova, Yelena I., Razina, V. V.   +3 more
core  

Variability of the Climate in Athens‐Greece Over the Last 165 Years of the Period 1858–2023: An Assessment Based on Thornthwaite's Climate Classification and Relevant Indices

International Journal of Climatology, EarlyView.
Athens' climate according to Thorthwaite is stable despite warming trends. Athens' climate remains semi‐arid and mesothermal over 165 years. Strong increases in evapotranspiration and stable precipitation were found. Soil water storage capacity affects water deficits but not aridity type.
Ioannis X. Tsiros, Haim Kutiel, Nikolaos D. Proutsos   +2 more
wiley   +1 more source

Mapping Arctic Tundra Vegetation Communities Using Field Spectroscopy and Multispectral Satellite Data in North Alaska, USA

Remote Sensing, 2016
The Arctic is currently undergoing intense changes in climate; vegetation composition and productivity are expected to respond to such changes. To understand the impacts of climate change on the function of Arctic tundra ecosystems within the global ...
Scott J. Davidson, Maria J. Santos, Victoria L. Sloan, Jennifer D. Watts, Gareth K. Phoenix, Walter C. Oechel, Donatella Zona   +6 more
doaj   +1 more source

An Ecological Study of Timberline and Alpine Areas, Mount Lincoln, Park County, Colorado [PDF]

, 1969
During the short alpine growing season of 1945 the authors had the opportunity of studying conditions and biota on Mount Lincoln, Park County, Colorado, in an attempt to evaluate the ecological conditions and animal communities of the area.
Blake, Abigail K., Blake, Irving H.
core   +1 more source

Holocene sea‐level and environmental changes on the Isle of Mull, Scotland

Journal of Quaternary Science, EarlyView.
ABSTRACT Sea‐level and coastal changes are reconstructed on the Isle of Mull, western Scotland, from 10 988 to 10 507 cal BP to the present. This research has produced the first SLIP for the Isle of Mull. A multiproxy approach including pollen, spore, foraminifera and diatom analyses reveals palaeoenvironmental changes from two coastal sites.
Katherine A. Selby, Jane Wheeler, William E. N. Austin, Heather Austin, Tom Hill, Sarah L. Bradley, Sally Derrett   +6 more
wiley   +1 more source

The Ghost of Development Past: the Impact of Economic Security Policies on Saami Pastoral Ecosystems

Ecology and Society, 2011
To ensure economic viability over time, any efforts to meet the Millennium Development Goals need to reconcile conservation with development interventions. Particularly, in marginal and risk prone areas erosion of resilience could make production systems
Vera H. Hausner, Per Fauchald, Torkild Tveraa, Elisabeth Pedersen, Johnny-Leo Jernsletten, Birgitte Ulvevadet, Rolf A. Ims, Nigel G. Yoccoz, Kari Anne. Bråthen   +8 more
doaj   +1 more source

Moose indifferent to canopy loss from forest disturbance by bark beetles

The Journal of Wildlife Management, EarlyView.
Moose showed strikingly similar patterns of habitat selection before and after widespread forest disturbance following an infestation of bark beetles. Our findings indicate that beetle‐kill does not appreciably alter habitat quality for moose and highlight the importance of riparian areas in sustaining moose as they contend with changing forests ...
Alexander B. May, Rebecca L. Levine, Lee Knox, Corey Class, Matthew J. Kauffman, Kevin L. Monteith   +5 more
wiley   +1 more source

Taxonomic diversity and abundance of enchytraeids (Annelida, Clitellata, Enchytraeida) in the Northern Palaearctic. 1. Asian part [PDF]

Biodiversity Data Journal
Enchytraeids, or potworms, are tiny oligochaetes that are distributed worldwide in many terrestrial, freshwater and marine ecosystems. Despite their key role in the functioning of ecosystems, the diversity and abundance of Enchytraeidae are rarely ...
Maxim Degtyarev, Ruslan Saifutdinov, Daniil Korobushkin, Alexander Bastrakov, Margarita Danilova, Ivan Davydov, Anastasia Gorbunova, Polina Guseva, Evgeniy Karlik, Roza Koshchanova, Ksenia Kuznetsova, Iurii Lebedev, Dmitriy Medvedev, Roman Obolenskiy, Anna Popova, Nina Pronina, Leonid Rybalov, Alexei Surov, Akmal Tadzhimov, Alexander Tarasov, Vladislav Vasiliev, Andrey Zaitsev, Elena Zvychaynaya, Konstantin Gongalsky   +23 more
doaj   +3 more sources

Mid-Miocene cooling and the extinction of tundra in continental Antarctica [PDF]

, 2008
A major obstacle in understanding the evolution of Cenozoic climate has been the lack of well dated terrestrial evidence from high-latitude, glaciated regions.
Ashworth, A.C., Hedenas, L., Hemming, S.R., Johnson, J.V., Leng, Melanie, Lewis, A.R., Machlus, M.L., Marchant, D.R., Newton, A.E., Raine, I., Willenbring, J.K., Williams, M., Wolfe, A.P.   +12 more
core   +1 more source