A5062690922- Ecology and Vegetation Dynamics Studies
- Fire effects on ecosystems
- Rangeland and Wildlife Management
- Plant and animal studies
- Forest ecology and management
- Plant Water Relations and Carbon Dynamics
- Animal Ecology and Behavior Studies
- Species Distribution and Climate Change
- Evolution and Genetic Dynamics
- Radioactive Decay and Measurement Techniques
- Economic and Environmental Valuation
- Land Use and Ecosystem Services
- Climate change and permafrost
- Health and Medical Research Impacts
- Forest Management and Policy
- Soil Carbon and Nitrogen Dynamics
- Diversity and Career in Medicine
- Genetic and phenotypic traits in livestock
- Chemistry and Stereochemistry Studies
- Agricultural Economics and Policy
- Gene expression and cancer classification
- Genetics, Bioinformatics, and Biomedical Research
- Marine and coastal plant biology
- Forest Ecology and Biodiversity Studies
- Advances in Oncology and Radiotherapy
Southern Oregon University
2023-2025
Ashland (United States)
2023-2025
University of Wyoming
2021-2025
University of Oregon
2022
University of California, Davis
2016-2021
Helmholtz Centre for Environmental Research
2020-2021
German Centre for Integrative Biodiversity Research
2019-2020
University of Oulu
2020
John Wiley & Sons (United States)
2020
Ecological Society of America
2020
Abstract Restoration success is often hampered by the failure of less dominant competitors to establish. An emerging literature on priority effects suggests manipulation community assembly as a useful technique help overcome these difficulties altering competitive relationships. We present data from set four experiments, carried out at each three sites in restoration settings California grasslands. These data, combined with patterns summarized literature, indicate that both short‐term (1–3...
Abstract Disturbance such as wildfire may create opportunities for plant communities to reorganize in response climate change. The interaction between change and disturbance be particularly important forests, where many of the foundational species (trees) are long‐lived poor initial tree establishment can result conversion shrub‐ or graminoid‐dominated systems. post‐disturbance vegetation weather conditions, extreme weather, could therefore provide useful information about how forest will...
Environmental conditions that vary from year to can be strong drivers of ecological dynamics, including the composition newly assembled communities. However, ecologists often chalk such dynamics up "noise" in experiments. Our lack attention "year effects" hampers our understanding contingencies assembly mechanisms and limits generalizability research findings. Here, we provide examples published demonstrating importance effects during community across study systems. We further quantify these...
Abstract Modelling species interactions in diverse communities traditionally requires a prohibitively large number of species‐interaction coefficients, especially when considering environmental dependence parameters. We implemented Bayesian variable selection via sparsity‐inducing priors on non‐linear abundance models to determine which should be retained and can represented as an average heterospecific interaction term, reducing the model evaluated performance using simulated communities,...
The order of species arrival can dramatically alter the trajectory community development. While there is experimental evidence that priority effects be important drivers structure early on, persistence and duration these unclear. Here we report on a assembly experiment in which mix four native grasses forbs were planted their own, together, or with one-year over other guild. We found positive for both initial years experiment. However, 6-8 yr after planting, effectiveness treatments mixed....
Global change drivers alter multiple components of community composition, with cascading impacts on ecosystem stability. However, it remains largely unknown how interactions among global will synchrony, especially across successional timescales. We analysed a 22-year time series grassland data from Cedar Creek, USA, to examine the joint effects pulse soil disturbance and press nitrogen addition richness, evenness stability during transient post-transient periods succession. Using regression...
Emotions coordinate our behavior and physiological states during survival-salient events pleasurable interactions. Even though we are often consciously aware of current emotional state, such as anger or happiness, the mechanisms giving ...Emotions felt in body, somatosensory feedback has been proposed to trigger conscious experiences. Here reveal maps bodily sensations associated with different emotions using a unique topographical self-report method. In ...
Ecological stability in plant communities is shaped by bottom-up processes like environmental resource fluctuations and top-down controls such as herbivory, each of which have demonstrated direct effects but may also act indirectly altering community dynamics. These indirect effects, called biotic mechanisms, been studied across gradients, few studies assessed the importance on mechanisms conjunction with processes. Here we use a long-term herbivore exclusion experiment central Kenya to...
AbstractModern coexistence theory is a dominant framework for understanding how environmental fluctuations promote species coexistence. However, assessing fluctuation-dependent mechanisms of in empirical systems-in which have diverse life histories and environment-competition relationships-has remained challenging many ecologists. To help empiricists theoreticians alike build intuition the role across systems environments, we explore two stage-structured histories-perennial seedbanking...
Year of establishment can be a critical driver plant communities with the stage community development particularly susceptible to factors including ambient rain, temperature, and other temporally variable drivers (e.g., seed seedling predators). However, while year effects have been shown drive structure at local (patch) scales, it is yet unexplored how these within-patch scale up landscape-level patterns biodiversity. These dynamics are likely but overlooked in many systems those...
Abstract Grassland and savanna ecosystems, important for both livelihoods biodiversity conservation, are strongly affected by ecosystem drivers such as herbivory, fire, drought. Interactions among herbivores vegetation produce complex feedbacks in these but have rarely been studied the context of fuel continuity resultant fire heterogeneity. We carried out 36 controlled burns within replicated experimental plots that had allowed differential access wild domestic large since 1995 a Kenya....
Abstract Extreme drought and increasing temperatures can decrease the resilience of plant communities to fires. Not only may extremely dry conditions during or after fires lead higher mortality poorer recruitment, but severe pre‐fire droughts reduce seed production belowground vigor that are essential post‐fire recovery, indirectly facilitate invasion. We studied survival, growth shrubs herbs in chaparral (shrubland) Northern California a 2015 fire immediately followed California’s extreme...
Abstract Fire, herbivores, and climatic factors are all major drivers of savanna grassland dynamics, they interact in complex ways, which still the process being explored. In particular, herbivores can reduce fire intensity by removal biomass, this could be reinforced herbivores’ attraction to recently burned sites, although resilience may limit temporal depth such effects. Fire temperature is most common metric reported for fire, but additional aspects behavior also measured. Using a set...
Equity index implied volatility functions are known to be excessively skewed in comparison with at the single stock level. We study this stylized fact for case of a major German index, DAX, by recovering from simulating 30-dimensional return system all DAX constituents. Option prices computed after risk neutralization multivariate process which is estimated under physical probability measure. The models belong class copula asymmetric dynamic conditional correlation models. show that moderate...
Global change drivers alter multiple components of community composition, with cascading impacts on ecosystem stability. However, few studies have examined the complex interplay between global drivers, synchrony, and diversity, especially over long-term successional dynamics. We analyzed a 22-year time series grassland data from Cedar Creek, USA, to examine joint effects pulse soil disturbance press nitrogen addition stability during transient post-transient periods succession. Using...
A “resilient” forest endures disturbance and is likely to persist. Resilience wildfire may arise from feedback between fire behavior structure in dry systems. Frequent creates fine-scale variability structure, which then interrupt fuel continuity prevent future fires killing overstory trees. Testing the generality scale of this phenomenon challenging for vast, long-lived ecosystems. We quantify structural severity across >30 years >1,000 wildfires California’s Sierra Nevada. find that...
Plant communities worldwide show varied responses to nutrient enrichment-including shifts in species identity, decreased diversity, and changes functional trait composition-but the factors determining community recovery after cessation of addition remain uncertain. We manipulated levels a tundra for 6 years followed by 8 recovery. examined how was mediated traits related plant resource-use strategy ability modify their environment. Overall, we observed persistent effects fertilization on...
Abstract The proliferation of high-dimensional data in ecology and evolutionary biology raise the promise statistical machine learning models that are highly predictive interpretable. However, commonly burdened with an inherent trade-off: in-sample prediction outcomes will improve as additional predictors included model, but this may come at cost poor accuracy limited generalizability for future or unsampled observations (out-of-sample prediction). To confront problem overfitting, sparse can...