Results 51 to 60 of about 2,757 (170)

Resource Availability and Habitat Quality Drive Time‐Lag Effects in High‐Altitude Ungulate Distribution

Integrative Zoology, EarlyView.
Our analysis revealed that while climate strongly influenced species distributions, habitat change drove most observed delays in distribution responses. In terms of community ecology, dispersed communities exhibited shorter time lags than concentrated groups. Analyses of lag duration revealed a 5–6‐year distribution lag effect in high‐altitude ungulate
Lu Wang, Xiuming Li, Ben Huang, Xiaoxue Li, Jizhen Chen, Ziyan Liao, Kun Jin   +6 more
wiley   +1 more source

Managing forage and ecosystems in the West beyond the West: recounting a century of reference areas and rangeland ecology in British Columbia, Canada

FACETS
The science of rangeland ecology has a long history in British Columbia (BC), first being introduced as a science in the 1930s to address severe overgrazing and loss of forage productivity in grasslands of the province’s southern interior.
Nicholas P. Hamilton, Nancy Elliot, Ian T. Campbell, Eleanor Bassett, Clayton Bradley, Lila DeLury, Shawna Larade, Philip J. Burton   +7 more
doaj   +1 more source

Decades of Enclosure Protection Exert Composite Effects on Grassland Grasshopper Communities

Integrative Zoology, EarlyView.
Decades of enclosure protection have altered grasshopper community structure, with species‐specific effects on population dynamics. For the low‐mobility grasshopper Chorthippus fallax, abundance did not differ strongly between exclosure‐protected and overgrazed areas, but its egg development duration was longer in exclosures. The two C.
Dan‐dan Feng, Hui‐feng Zhao, Ya‐hui Men, Jing Li, Mei‐ling Yang, Cai‐qing Yang, Bing Chen, Ai‐bing Zhang   +7 more
wiley   +1 more source

A model-based approach for mapping rangelands covers using Landsat TM image data

Caspian Journal of Environmental Sciences, 2009
Empirical models are important tools for relating field-measured biophysical variables to remotely sensed data. Regression analysis has been a popular empirical method of linking these two types of data to estimate variables such as biomass, percent ...
Ajorlo, M., Ahmad Husni Mohd, H., Ridzwan Abd, H.   +2 more
doaj  

Traditional Micropatches, Plant Diversity, and Local Perceptions of Rangeland Degradation in Northeastern Ethiopia

Journal of Landscape Ecology
In East Africa, Ethiopia’s rangelands constitute about 64 % of lowland areas, serving as primary feed resources for pastoral communities. However, these rangelands face severe degradation due to overgrazing, climate variability, human disturbance, and ...
Asfaw Oumer, Girmay Shishay, Gebrehiwot Kflay   +2 more
doaj   +1 more source

Drought and bush encroachment threaten dry rangeland sustainability in Northeastern Ethiopia

Global Ecology and Conservation
Climate change and the spread of invasive bush species significantly threaten global rangeland health. However, the effects of different land use intensities and timings on vegetation health are still poorly understood.
Minyahel Tilahun, Zenghui Liu, Ayana Angassa, Zhipeng Wang, Meng Li, Jianshuang Wu   +5 more
doaj   +1 more source

Smoke signals: Measuring wildlife smoke exposure with animal‐borne and stationary sensors

Methods in Ecology and Evolution, EarlyView.
Abstract Wildfires are becoming larger, more frequent and more severe, producing smoke plumes that degrade air quality hundreds of kilometres away and for days to weeks after an active fire. Despite public health and safety concerns regarding wildfire smoke, we know little about how free‐ranging wildlife experience or respond to these exposures.
Adam F. Parlin, Mark A. Ditmer, Zachary L. Steel, Jeremy Alder, Kent R. Hersey, Virginia Stout, B. Wesley Alexander, Brock R. McMillan, Randy T. Larsen, Melia DeVivo, Andria M. Townsend, James W. Cain III, Mark A. Peyton, Beth Gardner, George Wittemyer   +14 more
wiley   +1 more source

Potential vs. Realized Large Carnivore Density: The Influence of Livestock on Carnivore Carrying Capacity Estimation

Animal Conservation, EarlyView.
In an unfenced mixed‐use savanna landscape in Namibia, we compared realized densities of leopards and cheetahs estimated using spatial capture–recapture models with prey‐based carrying capacity predictions. Leopard densities exceeded predictions based on wild prey alone but closely matched livestock‐supplemented models, suggesting that vulnerable ...
Kathan Bandyopadhyay, Bogdan Cristescu, Stuti Anjaria, Stijn Verschueren, John L. Koprowski, Joseph D. Holbrook, Jeffrey L. Beck, Laurie Marker   +7 more
wiley   +1 more source

The collective application of shorebird tracking data to conservation

Conservation Biology, EarlyView.
Abstract Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence‐based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership
Autumn‐Lynn Harrison, Candace Stenzel, Alexandra Anderson, Jessica Howell, Richard B. Lanctot, Marley Aikens, Joaquín Aldabe, Liam A. Berigan, Joël Bêty, Erik Blomberg, Juliana Bosi de Almeida, Andy J. Boyce, David W. Bradley, Stephen Brown, Jay Carlisle, Edward Cheskey, Katherine Christie, Sylvain Christin, Rob Clay, Ashley Dayer, Jill L. Deppe, Willow English, Scott A. Flemming, Olivier Gilg, Christine Gilroy, Susan Heath, Jason M. Hill, J. Mark Hipfner, James A. Johnson, Luanne Johnson, Bart Kempenaers, Paul Knaga, Eunbi Kwon, Benjamin J. Lagassé, Jean‐François Lamarre, Christopher Latty, Don‐Jean Léandri‐Breton, Nicolas Lecomte, Pam Loring, Laura A. McDuffie, Rebecca McGuire, Scott Moorhead, Juan G. Navedo, David Newstead, Erica Nol, Alina Olalla‐Kerstupp, Bridget Olson, Elizabeth Olson, Julie Paquet, Allison K. Pierce, Jennie Rausch, Kevin Regan, Matthew E. Reiter, Amber M. Roth, Mike Russell, Daniel Ruthrauff, Sarah T. Saalfeld, Amy L. Scarpignato, Shiloh Schulte, Nathan R. Senner, Joseph A. M. Smith, Paul A. Smith, Zach Spector, Kelly Srigley Werner, Michelle L. Stantial, Audrey R. Taylor, T. Lee Tibbitts, Mihai Valcu, Nils Warnock, Walter Wehtje, Brad Winn, Michael B. Wunder   +71 more
wiley   +1 more source

Effect of different land uses on some physicochemical and micromorphological properties of calcareous soils in East Azerbaijan Province, northwest of Iran [PDF]

Iran Agricultural Research
Vegetation is one of the active pedogenic factors, although its influence on soil micromorphological properties has received relatively little attention.
Ashraf Malekian, Abolfazl Azadi, Sirous Shakeri   +2 more
doaj   +1 more source