Results 31 to 40 of about 2,118,018 (212)

Globally widespread weeds show preadaptation to non‐analogue climates: a common garden approach

Oikos, EarlyView.
Climatic niche shifts have been documented for plant species introduced into new regions, however the underlying mechanisms are poorly understood. Niche shifts into novel climates are particularly difficult to predict as previous occurrence data cannot reveal whether these novel climates are within species' fundamental niche limits.
Thomas Frank Carlin, Jennifer L. Bufford, Philip E. Hulme, William K. Godsoe   +3 more
wiley   +1 more source

Forecasting the impact of food‐provisioning and other stressors on a marine top‐predator population

Oikos, EarlyView.
Wildlife tourism can alter animal behavior, affect vital rates and diminish population viability but its impact in the context of other human‐ and environmental disturbances, remain largely unstudied. Using simulation models and leveraging a robust long‐term dataset spanning eight years, we evaluated the contribution of wildlife feeding, in the context
Valeria Senigaglia, Leslie New, Oliver Manlik, Kate R. Sprogis, Lars Bejder   +4 more
wiley   +1 more source

Glacial and Subglacial Topography of West Antarctica [PDF]

Journal of Glaciology, 1961
AbstractA summary of the techniques used and results obtained from three oversnow traverses in Marie Byrd Land and the Ellsworth Highland between January 1957 and January 1959 is presented. Seismic reflection shooting at 30 nautical mile (55.5 km.) intervals was combined with gravity, magnetic and altimetric measurements to determine the glacial and ...
Charles R. Bentley, Ned A. Ostenso
openaire   +1 more source

Phosphorus limits the growth of bacterial and eukaryotic primary producers in recently deglaciated High Arctic soils

Oikos, EarlyView.
Glaciers are receding at unprecedented rates worldwide, exposing large areas of barren sediment that are quickly colonized by microbes. Nutrient availability is a critical driver of early ecosystem succession, but in the High Arctic its role has remained uncertain.
Steven K. Schmidt, Jannetta N. Robinson, Adam J. Solon, James A. Bradley, Anastasia S. Hambi, Rachel R. Rubin, Charles Oliver, Ben W. Johnson, Mihai O. Cimpoiasu, Trevor P. Irons, Oliver Kuras, Anna Bergstrom, Pacifica Sommers   +12 more
wiley   +1 more source

Depositional and Hydrological Relationships Between Buried Dead Ice and the Active Layer in the McMurdo Dry Valleys, Antarctica: A Study of Sediment Geochemistry and Cation Concentrations

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The McMurdo Dry Valleys, the largest ice‐free region in Antarctica, are home to a cold‐desert hydrologic system of glaciers, snowbanks, streams, and lakes. Freshwater is also stored as dead glacial ice, which is poorly constrained in terms of ion concentrations and interactions with both in situ and overlying sediments.
Matthew C. Witscheber, Kate M. Swanger
wiley   +1 more source

Scaling turbulence drives the general circulation

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The NOAA Gulfstream SP4, which deployed the GPS dropsondes over the NE Pacific Ocean as part of the Winter Storms Project during the January–March periods of 2004, 2005 and 2006. Abstract Statistical multifractal analysis of airborne and dropsonde observations is used to show that persistence of velocity after molecular collisions breaks the continuous
Adrian F. Tuck
wiley   +1 more source

Holocene Deglaciation of Marie Byrd Land, West Antarctica [PDF]

Science, 2003
Surface exposure ages of glacial deposits in the Ford Ranges of western Marie Byrd Land indicate continuous thinning of the West Antarctic Ice Sheet by more than 700 meters near the coast throughout the past 10,000 years. Deglaciation lagged the disappearance of ice sheets in the Northern Hemisphere by thousands of years and may still be under way ...
Stone, John O, Balco, Gregory A, Sugden, David, Caffee, Marc W, Sass III, Louis C, Cowdery, Seth G, Siddoway, Christine   +6 more
openaire   +4 more sources

Archiving the History of Environmentalism: Insights from Academia and Practice

History, EarlyView.
Abstract This Forum considers the current state of archiving for the environmental movement at local, national and international levels. It responds to a gap that researchers of environmentalism have long been aware of, but one that is poorly understood from the perspective of records management and collections development practice.
Henry Irving, Paul Beard, Georgina Brewis, Sara Kinsey, Heather Forbes, Tara‐Lee Platt, Maissan Hassan, Rebecca Marti   +7 more
wiley   +1 more source

The Momentum of ‘Developed’: Bodies of Water, Aging Bodies and Malta's Interventions at the UN

History, EarlyView.
Abstract Histories of major powers continue to shape how many scholars conceptualize internationalism. By focusing on Malta's interventions at the UN challenges, this article challenges such narrative. In particular, it examines Arvid Pardo's 1967 petition that the seabed be reconceived and protected as the ‘common heritage of mankind’ and Vincent ...
Brianne Wesolowski
wiley   +1 more source

Gravity studies over West Antarctica [PDF]

, 2013
textThis thesis describes the results of new analysis of gravity studies over West Antarctica. Set on the Siple Coast, an airborne geophysical survey was flown between 1994 and 1997 that covered the trunk of Bindschadler Ice Stream and the up-stream ...
Burris, Svetlana Gennadiyevna
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