Results 51 to 60 of about 2,236 (182)

CHEMOTYPIC Variation in Volatiles and Herbivory for Sagebrush [PDF]

Journal of Chemical Ecology, 2016
Plants that are damaged by herbivores emit complex blends of volatile compounds that often cause neighboring branches to induce resistance. Experimentally clipped sagebrush foliage emits volatiles that neighboring individuals recognize and respond to. These volatiles vary among individuals within a population.
Richard Karban, Patrick Grof-Tisza, James D. Blande   +2 more
openaire   +4 more sources

Apex predators exploit advantageous snow conditions across hunting modes

Journal of Animal Ecology, EarlyView.
Advantageous snow conditions—in terms of snow depth and density—are among the most important features of the winter landscape for two apex predators, regardless of hunting strategy. In a warming climate, the knock‐on effects of a diminishing snowpack may reduce the hunting success of multiple large carnivore species.
Benjamin K. Sullender, Taylor R. Ganz, Ross Mower, Jessica D. Lundquist, Brian N. Kertson, Thomas M. Newsome, Aaron J. Wirsing, Laura R. Prugh   +7 more
wiley   +1 more source

Cumulative effects of an herbivorous ecosystem engineer in a heterogeneous landscape

Ecosphere, 2016
Foraging by herbivores alters individual plants and vegetation communities directly, and engineering behaviors such as bioturbation (digging and turning soil) and biodeposition (deposition of feces and urine) can affect soils and physical properties that
Mitchell A. Parsons, Tela C. Barkley, Janet L. Rachlow, Jodi L. Johnson‐Maynard, Timothy R. Johnson, Charlotte R. Milling, John E. Hammel, Ian Leslie   +7 more
doaj   +1 more source

Historical fire regimes and contemporary fire effects within sagebrush habitats of Gunnison Sage‐grouse

Ecosphere, 2023
The historical role of fire in sagebrush (Artemisia tridentata) landscapes remains poorly understood, yet is important to inform management and conservation of obligate species such as the threatened Gunnison Sage‐grouse (GUSG; Centrocercus minimus).
Petar Z. Simic, Jonathan D. Coop, Ellis Q. Margolis, Jessica R. Young, Manuel K. Lopez   +4 more
doaj   +1 more source

Understanding natal emigration in group‐living carnivores

Journal of Animal Ecology, EarlyView.
Dispersal is a key ecological and evolutionary process, yet drivers of variation in emigration under human‐modified conditions remain understudied. Using a novel genetic approach applied to harvested grey wolves in Idaho, USA, we found that prey availability and population density shape natal emigration patterns in a cooperative breeder.
Kathleen M. Petersen, Joel M. Tebbenkamp, Matthew A. Mumma, David E. Ausband   +3 more
wiley   +1 more source

Hoary Cress Reproduction in a Sagebrush Ecosystem [PDF]

Journal of Range Management, 2000
Field studies were undertaken to evaluate hoary cress (Cardaria draba (L.) Desv.) reproduction and spread in a sagebrush ecosystem. Hoary cress germination, emergence, and survival were restricted to moist environments. These conditions occurred 2 out of 8 years.
L. Larson, G. Kiemnec, T. Smergut
openaire   +2 more sources

Influence of elevation, climate, snowmelt and floral abundance on body size of solitary bees

Ecological Entomology, EarlyView.
We measured body size in bee species from a 10‐year specimen collection from Colorado sub‐alpine meadows (2450–3450 m) and tested effects of elevation and annual snowmelt, climate and floral abundance. 2 out of 4 bee species collected across a broad elevation range showed a decline in body size with higher elevations; the other two showed no effect ...
Lachlan C. Jones, Melanie R. Kazenel, Kristin Conrad, Jane E. Ogilvie, Ian K. Breckheimer, Rebecca E. Irwin   +5 more
wiley   +1 more source

Integrating herbicide application and seeding techniques to restore native plant diversity in crested wheatgrass‐dominated rangelands

Restoration Ecology, EarlyView.
Abstract Introduction Restoring native plant diversity in crested wheatgrass (Agropyron cristatum)‐dominated rangelands is a persistent challenge in ecological restoration across western North America. Dense, long‐lived stands of this exotic grass suppress native seedling recruitment, hinder habitat restoration, and reduce ecosystem resilience ...
Peter Bugoni, Jane Mangold
wiley   +1 more source

Evaluating Spatial Coverage of the Greater Sage-Grouse Umbrella to Conserve Sagebrush-Dependent Species Biodiversity within the Wyoming Basins

Land
Biodiversity is threatened due to land-use change, overexploitation, pollution, and anthropogenic climate change, altering ecosystem functioning around the globe.
Cameron L. Aldridge, D. Joanne Saher, Julie A. Heinrichs, Adrian P. Monroe, Matthias Leu, Steve E. Hanser   +5 more
doaj   +1 more source

Surface fluxes and water balance of spatially varying vegetation within a small mountainous headwater catchment [PDF]

Hydrology and Earth System Sciences, 2010
Precipitation variability and complex topography often create a mosaic of vegetation communities in mountainous headwater catchments, creating a challenge for measuring and interpreting energy and mass fluxes.
G. N. Flerchinger, D. Marks, M. L. Reba, Q. Yu, M. S. Seyfried   +4 more
doaj   +1 more source