A5005507907- Ecology and Vegetation Dynamics Studies
- Plant Water Relations and Carbon Dynamics
- Plant and animal studies
- Rangeland and Wildlife Management
- Species Distribution and Climate Change
- Climate variability and models
- Rangeland Management and Livestock Ecology
- Soil Carbon and Nitrogen Dynamics
- Pasture and Agricultural Systems
- Ecosystem dynamics and resilience
- Fire effects on ecosystems
- Wildlife Ecology and Conservation
- Hydrology and Drought Analysis
- Land Use and Ecosystem Services
- Tree-ring climate responses
- Animal Ecology and Behavior Studies
- Climate change impacts on agriculture
- Botany and Plant Ecology Studies
- Hydrology and Watershed Management Studies
- Peatlands and Wetlands Ecology
- Mycorrhizal Fungi and Plant Interactions
- Plant responses to elevated CO2
- Plant responses to water stress
- Soil and Water Nutrient Dynamics
- Botany, Ecology, and Taxonomy Studies
Colorado State University
2016-2025
Northern Arizona University
2022
Google (United States)
2017
University of California, Santa Barbara
2002-2016
Kansas State University
1999-2016
International Union for Conservation of Nature
2016
John Wiley & Sons (United States)
2016
Ecological Society of America
2016
University of New Mexico
2006-2016
South African National Parks
2016
Amplification of the hydrological cycle as a consequence global warming is forecast to lead more extreme intra-annual precipitation regimes characterized by larger rainfall events and longer intervals between events. We present conceptual framework, based on past investigations ecological theory, for predicting consequences this underappreciated aspect climate change. consider broad range terrestrial ecosystems that vary in their overall water balance. More are expected increase duration...
Ecosystem responses to increased variability in rainfall, a prediction of general circulation models, were assessed native grassland by reducing storm frequency and increasing rainfall quantity per during 4-year experiment. More extreme patterns, without concurrent changes total quantity, temporal soil moisture plant species diversity. However, carbon cycling processes such as CO2 flux, uptake the dominant grasses, aboveground net primary productivity (ANPP) reduced, ANPP was more responsive...
The invasion paradox describes the co-occurrence of independent lines support for both a negative and positive relationship between native biodiversity invasions exotic species. leaves implications native–exotic species richness relationships open to debate: Are rich communities more or less susceptible by species? We reviewed considerable observational, experimental, theoretical evidence describing sought generalizations concerning where why occurs, its community ecology assembly processes,...
Changes in Earth's surface temperatures caused by anthropogenic emissions of greenhouse gases are expected to affect global and regional precipitation regimes. Interactions between changing regimes other aspects change likely natural managed terrestrial ecosystems as well human society. Although much recent research has focused on assessing the responses rising carbon dioxide or temperature, relatively little understanding how respond changes Here we review predicted regimes, outline...
Abstract Loss of species caused by widespread stressors, such as drought and fragmentation, is likely to be non‐random depending on abundance in the community. We experimentally reduced number rare uncommon plant while independently reducing only dominant grass intact, native grassland. This allowed us simulate a pattern loss, based abundances, from communities shaped natural ecological interactions characterized uneven distributions. Over two growing seasons, total above‐ground net primary...
Summary 1. Growing recognition of the importance climate extremes as drivers contemporary and future ecological dynamics has led to increasing interest in studying these locally globally important phenomena. 2. Many studies examining impacts what are deemed extremes, such heat waves severe drought, do not provide a definition extremity, either from statistical context based on long‐term climatic record or perspective response system – effects extreme (unusual profound) comparison normal...
Climate change forecasts of more frequent climate extremes suggest that such events will become increasingly important drivers future ecosystem dynamics and function. Because the rarity unpredictability naturally occurring limits assessment their ecological impacts, we experimentally imposed extreme drought a mid‐summer heat wave over two years in central U.S. grassland. While was resistant to waves, it not drought, which reduced aboveground net primary productivity (ANPP) below lowest level...
For more than 30 years, the relationship between net primary productivity and species richness has generated intense debate in ecology about processes regulating local diversity. The original view, which is still widely accepted, holds that hump-shaped, with first rising then declining increasing productivity. Although recent meta-analyses questioned generality of hump-shaped patterns, these syntheses have been criticized for failing to account methodological differences among studies. We...
In contrast to pulses in resource availability following disturbance events, many of the most pressing global changes, such as elevated atmospheric carbon dioxide concentrations and nitrogen deposition, lead chronic often cumulative alterations available resources. Therefore, predicting ecological responses these will require modification existing disturbance‐based frameworks. Here, we present a conceptual framework for assessing nature pace change under alterations. The...
Abstract Fire is a powerful ecological and evolutionary force that regulates organismal traits, population sizes, species interactions, community composition, carbon nutrient cycling ecosystem function. It also presents rapidly growing societal challenge, due to both increasingly destructive wildfires fire exclusion in fire‐dependent ecosystems. As an process, integrates complex feedbacks among biological, social geophysical processes, requiring coordination across several fields scales of...
Summary Advancing the field of ecology relies on understanding generalities and developing theories based empirical functional relationships that integrate across organismal to global spatial scales span temporal scales. Significant advances in predicting responses ecological communities globally extensive anthropogenic perturbations, for example, require role environmental context determining outcomes, which turn requires standardized experiments sites regions. Distributed collaborative can...
Summary 1. Climate extremes, such as severe drought, heat waves and periods of heavy rainfall, can have profound consequences for ecological systems human welfare. Global climate change is expected to increase both the frequency intensity extremes there an urgent need understand their consequences. 2. Major challenges advancing our understanding include setting a climatic baseline facilitate statistical determination when conditions are extreme, having sufficient knowledge so that extreme...
The effects of short-term drought on soil microbial communities remain largely unexplored, particularly at large scales and under field conditions. We used seven experimental sites from two continents (North America Australia) to evaluate the impacts imposed extreme abundance, community composition, richness, function bacterial fungal communities. encompassed different grassland ecosystems spanning a wide range climatic properties. Drought significantly altered composition bacteria and,...