A5039914676- Ecology and biodiversity studies
- Fire effects on ecosystems
- Rangeland and Wildlife Management
- Ecology and Vegetation Dynamics Studies
- Botany and Plant Ecology Studies
- Peatlands and Wetlands Ecology
- Rangeland Management and Livestock Ecology
- Wildlife Ecology and Conservation
- Pleistocene-Era Hominins and Archaeology
- Agronomic Practices and Intercropping Systems
- Archaeology and Natural History
- Geography and Education Methods
- Plant Water Relations and Carbon Dynamics
- Plant Taxonomy and Phylogenetics
- Seedling growth and survival studies
- Geology and Paleoclimatology Research
- Ecosystem dynamics and resilience
- Indigenous Cultures and History
- Crop Yield and Soil Fertility
- Forest Ecology and Biodiversity Studies
- Soil Carbon and Nitrogen Dynamics
Universidad Nacional de La Pampa
2001-2023
Colorado State University
2001-2012
United States Department of Defense
2011
Jornada Basin Long Term Ecological Research
2011
Agricultural Research Service
2011
Populations of beaver and willow have not thrived in riparian environments that are heavily browsed by livestock or ungulates, such as elk. The interaction elk herbivory may be an important mechanism underlying declines this competitive environment. We conducted a field experiment compared the standing crop three years after simulated cutting on paired plants with without intense browsing (∼85% utilization rate). Simulated produced was small (biomass diameter) short, far fewer, but longer,...
Since the 1800s managed grasslands and shrublands of arid American Southwest have been grazed predominantly by cattle originally bred for temperate climates in northern Europe. A heritage breed, criollo cattle, has survived Mexico more than 400 years under desert-like conditions low variable rainfall, hot temperatures growing season, both spatially temporally scarce levels primary production. We tested hypothesis that breed a broader spatial foraging distribution harsh environmental...
Beaver ( Castor spp.) conservation requires an understanding of their complex interactions with competing herbivores. Simulation modeling offers a controlled environment to examine long‐term dynamics in ecosystems driven by uncontrollable variables. We used new version the SAVANNA ecosystem model investigate beaver C. canadensis ) and elk Cervus elaphus competition for willow Salix spp.). initialized field data from Rocky Mountain National Park, Colorado, USA, simulate 4‐ha riparian...
Abstract Neotropical xerophytic forest ecosystems evolved with fires that shaped their resilience to disturbance events. However, it is unknown whether persists under a new fire regime influenced by anthropogenic and climate change. We asked there was evidence for severity threshold causing an abrupt transition from alternative shrub thicket state in the presence of typical postfire management. studied heterogeneous wildfire event assess medium‐term effects (11 years) varying Caldén central...
<em>The Bulletin of the Ecological Society America</em> is official record business America, publishing non-refereed articles that cover ecological events, news and reports.
The resilience of willow (Salix monticola Bebb, Salix geyeriana Anderss., planifolia Pursh) stems released from intense elk (Cervus elaphus) browsing in Rocky Mountain National Park, Colorado, was quantified 1998 with a retrospective study that compared biomass, number, and length segments on located inside (protected) outside (browsed) exclosures. Segment biomass increased each year after protection by about 3-12 g year-1 browsed 10-27 protected stems. number similar for the first 2 years...