A5076285094- Climate change and permafrost
- Cryospheric studies and observations
- Species Distribution and Climate Change
- Avian ecology and behavior
- Climate variability and models
- Arctic and Antarctic ice dynamics
- Geology and Paleoclimatology Research
- Animal Vocal Communication and Behavior
- Tree-ring climate responses
- Fire effects on ecosystems
- Plant Water Relations and Carbon Dynamics
- Social Acceptance of Renewable Energy
- Climate change impacts on agriculture
- Physiological and biochemical adaptations
- Marine animal studies overview
- Animal Behavior and Reproduction
- Climate Change Communication and Perception
- Environmental Education and Sustainability
- Rangeland and Wildlife Management
- Wildlife Ecology and Conservation
- Bayesian Modeling and Causal Inference
- Ecology and Vegetation Dynamics Studies
- Risk Perception and Management
- Irrigation Practices and Water Management
Cornell University
2017-2022
Atkins (United States)
2022
Columbia University
2014-2018
Lamont-Doherty Earth Observatory
2014-2018
New York State College of Agriculture & Life Sciences
2018
The University of Texas at Arlington
2014
2016 was one of the warmest and driest summers on record throughout much Northeastern United States (Northeast). Additionally, historically low winter snowfall preceding summer exacerbated drought conditions led to streamflows in some regions. Climate models suggest that short-term droughts could increase frequency continue pose challenges farmers water resource managers Northeast. Here we focus impacts New York State (NY), an economically important agricultural state We found several...
Abstract Climate warming is affecting the Arctic in multiple ways, including via increased dominance of deciduous shrubs. Although many studies have focused on how this vegetation shift altering nutrient cycling and energy balance, few explicitly considered effects tundra fauna, such as millions migratory songbirds that breed northern regions every year. To understand increasing shrub may alter breeding songbird habitat, we quantified arthropod community characteristics both graminoid...
Climate change is causing rapid shifts in temperature while also increasing the frequency, duration, and intensity of extreme weather. In northern hemisphere, spring 2013 was characterized as due to record high snow cover low temperatures. Studies that describe effects weather on phenology across taxa are limited morphological physiological responses remain poorly understood. Stress physiology, measured through baseline stress-induced concentrations cortisol or corticosterone, has often been...
Soundscape-level acoustic recordings revealed delay in arrival of songbird community to arctic breeding grounds.
The physical and biological responses to rapid arctic warming are proving acute, as such, there is a need monitor, understand, predict ecological over large spatial temporal scales. use of the normalized difference vegetation index (NDVI) acquired from airborne satellite sensors addresses this need, it widely used tool for detecting quantifying dynamics tundra cover, productivity, phenology. Such extensive NDVI quantify characteristics suggests that may be similarly applied characterizing...
Abstract Satellite studies of the terrestrial Arctic report increased summer greening and longer overall growing peak seasons since 1980s, which increases productivity period carbon uptake. These trends are attributed to increasing air temperatures reduced snow cover duration in spring fall. Concurrently, deciduous shrubs becoming increasingly abundant tundra landscapes, may also impact canopy phenology productivity. Our aim was determine influence greater shrub abundance on subsequent...
Individuals at the forefront of a range shift are likely to exhibit phenotypic traits that distinguish them from population breeding within historic range. Recent studies have examined morphological, physiological and behavioral phenotypes individuals edge their Several found differences in hypothalamic-pituitary-adrenal (HPA) axis activity response acute restraint stress limits. HPA activation leads elevations glucocorticoids regulate physiology behavior. Here we compare hormonal profiles...
1. Rapid warming has facilitated an increase in deciduous shrub cover arctic tundra. Because shrubs create a cooler microclimate during the growing season, could modulate effects of global on phenology and activity ectotherms, including arthropods. This possibility was explored here using two dominant arthropod groups (flies wolf spiders) Alaskan 2. We monitored arthropods with pitfall traps over five summers at four sites that differed abundance, used generalised additive mixed models...
Increasing temperatures in arctic regions are causing earlier spring snowmelt, leading to plant emergence, which could lengthen the period of carbon uptake. Warming is also a shift from graminoid deciduous shrub-dominated tundra, and many areas shrubs becoming taller. As taller become increasingly dominant, landscapes may retain more snow, snow cover duration offset advances start growing season that expected as result snowmelt. consequence, deeper later snowmelt shrub tundra delay emergence...
Plants are strongly influenced by their thermal environments, and this influence manifests itself in a variety of ways, such as altered ranges, growth, morphology, or physiology. However, plants also modify local environments through feedbacks related to properties processes albedo evapotranspiration. Here, we used leaf- plot- level thermography on the north slope Brooks Range, Alaska, explore interspecific differences among arctic tundra plants, determine if species differentially...
While the effect of weather on reproduction has been studied for many years in avian taxa, rapid pace climate change arctic regions added urgency to this question by changing conditions species experience during breeding. Given this, it is important understand how factors such as temperature, rain, snowfall, and wind affect both directly indirectly (e.g. through their effects food availability). In study, we ask availability influence daily survival rates clutches two arctic‐breeding...