Results 131 to 140 of about 25,048 (251)

ERTS-1 evaluation of natural resources management applications in the Great Basin [PDF]

open access: yes
The relatively cloud free weather in the Great Basin has allowed the accumulation of several dates of excellent ERTS-1 imagery. Mountains, valleys, playas, stream courses, canyons, alluvial fans, and other landforms are readily delineated on ERTS-1 ...
Lorain, G., Tueller, P. T.
core   +1 more source

Soil-surface CO2 flux and growth in a boreal Norway spruce stand [PDF]

open access: yes, 2001
Global warming is predicted to affect the carbon balance of forests. A change in the carbon balance would give a positive or negative feedback to the greenhouse effect, which would affect global warming.
Strömgren, Monika
core  

Hidden Markov Quantile Models With Trends for Analysing Air Temperature Data

open access: yesInternational Journal of Climatology, Volume 46, Issue 6, May 2026.
There is the question of whether climate change, expressed by time‐trends in temperature, is of a heterogeneous nature or not. Here, the time‐trend heterogeneity argument has been investigated using Hidden Markov (HM) quantile time‐trends models in temperature time series.
Georgios Tsiotas   +2 more
wiley   +1 more source

A comparative study of satellite and ground-based phenology [PDF]

open access: yes, 2018
Long time series of ground-based plant phenology, as well as more than two decades of satellite-derived phenological metrics, are currently available to assess the impacts of climate variability and trends on terrestrial vegetation.
Appenzeller, C.   +3 more
core  

Phenological responses to climate change: advancing mating and calving in wild and semi‐captive Caspian red deer

open access: yesWildlife Biology, Volume 2026, Issue 3, May 2026.
Species respond to climate change through phenological and spatial shifts. Herbivorous mammals, in particular, are vulnerable due to their direct dependence on seasonal vegetation and the potential misalignment between their reproductive cycles and shifting food availability.
Farid Salmanpour   +5 more
wiley   +1 more source

Annual survival in a dynamic species: pronghorn survival patterns across their northern range

open access: yesWildlife Biology, Volume 2026, Issue 3, May 2026.
Quantifying variation in demographic patterns, such as survival and recruitment, is critical for understanding population dynamics and informing evidence‐based and adaptive wildlife management. In this study, we leverage an extensive dataset from over 1000 GPS collared pronghorn Antilocapra americana to provide the first large‐scale evaluation of ...
Molly C. McDevitt   +5 more
wiley   +1 more source

Secondary reproductive strategies in Pacific black brant (Branta bernicla nigricans) [PDF]

open access: yes, 1999
Thesis (M.S.) University of Alaska Fairbanks, 1999Waterfowl are known to use secondary reproductive strategies, both extra-pair copulations and intraspecific brood parasitism, to increase fitness. We used five polymorphic microsatellite loci to determine
Svete, Pamela A.
core  

Combining non‐invasive survey methods increases cumulative detection probability for breeding harlequin ducks Histrionicus histrionicus

open access: yesWildlife Biology, Volume 2026, Issue 3, May 2026.
The effective implementation of new technologies for wildlife population monitoring is limited by knowledge of factors that impact their efficacy. Population monitoring of harlequin ducks Histrionicus histrionicus on their breeding streams in Montana and Idaho in the Northern Rocky Mountains, has historically relied on ground‐based foot surveys (GBS ...
Holli A. Holmes   +10 more
wiley   +1 more source

Divergent Transformation of Wet to Cold Bias on the Tibetan Plateau in Climate Models During Snow Season

open access: yesGeophysical Research Letters
Wet and cold biases on the Tibetan Plateau (TP) commonly exist in global and regional climate simulations. Previous studies have explored the possible causes of wet and cold biases and contributed to reducing these biases. However, the connection between
Xin Miao   +5 more
doaj   +1 more source

Changes in snow cover climatology and its elevation dependency over Romania (1961–2020)

open access: yesJournal of Hydrology: Regional Studies
Study Region: Romanian territory and the Carpathian Mountains, Romania.Study focus: We provide a consistent picture of long-term changes in relevant snow cover characteristics, including phenology (timing of the snow onset and melting), snow cover ...
Vlad-Alexandru Amihăesei   +5 more
doaj   +1 more source

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