A5048053140- Species Distribution and Climate Change
- Remote Sensing in Agriculture
- Ecology and Vegetation Dynamics Studies
- Plant Water Relations and Carbon Dynamics
- Plant and animal studies
- Rangeland and Wildlife Management
- Animal and Plant Science Education
- Plant responses to elevated CO2
- Peatlands and Wetlands Ecology
- Fire effects on ecosystems
- Botany and Plant Ecology Studies
- Urban Heat Island Mitigation
- Coastal wetland ecosystem dynamics
- Tree-ring climate responses
- Research Data Management Practices
- Botany, Ecology, and Taxonomy Studies
- Atmospheric and Environmental Gas Dynamics
- Climate variability and models
- Plant Parasitism and Resistance
- Insect and Arachnid Ecology and Behavior
- Geology and Paleoclimatology Research
- Cryospheric studies and observations
- Scientific Computing and Data Management
- Atmospheric chemistry and aerosols
- Land Use and Ecosystem Services
United States Geological Survey
2014-2023
Grand Teton National Park
2021
Delta Air Lines (United States)
2021
Schoodic Institute
2021
United States Department of the Interior
2008-2020
Arizona Geological Survey
2009-2019
Entertainment Industries Council
2015-2018
Ecological Society of America
2016
Sierra Nevada Corporation (United States)
2016
University of Arizona
1997-2015
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 Aim The use of species distribution models (SDMs) to predict biological invasions is a rapidly developing area ecology. However, most studies investigating SDMs typically ignore prediction errors and instead focus on regions where native distributions correctly invaded ranges. We investigated the ecological significance using reciprocal comparisons between predicted range red imported fire ant ( Solenopsis invicta ) (hereafter called ant). questioned whether ants occupy similar...
Abstract Responses of soil respiration to atmospheric and climatic change will have profound impacts on ecosystem global carbon (C) cycling in the future. This study was conducted examine effects concurrent driving factors elevated CO 2 concentration, air warming, changing precipitation a constructed old‐field grassland eastern Tennessee, USA. Model ecosystems seven species were established open‐top chambers treated with factorial combinations ambient or (+300 ppm) (+3 °C) temperature, high...
Phenology offers critical insights into the responses of species to climate change; shifts in species' phenologies can result disruptions ecosystem processes and services upon which human livelihood depends. To better detect such shifts, scientists need long-term phenological records covering many taxa across a broad geographic distribution. date, observation efforts USA have been geographically limited used different methods, making comparisons sites difficult. facilitate coordinated...
Large-scale changes in climate may have unexpected effects on ecosystems, given the importance of as a control over almost all ecosystem attributes and internal feedbacks. Changes plant community productivity or composition, for example, alter resource dynamics, trophic structures, disturbance regimes, with subsequent positive negative feedbacks community. At northern latitudes, where increases temperature are expected to be greatest but species diversity is relatively low, climatically...
Abstract Boreal peatlands may be particularly vulnerable to climate change, because temperature regimes that currently constrain biological activity in these regions are predicted increase substantially within the next century. Changes peatland plant community composition response change alter nutrient availability, energy budgets, trace gas fluxes, and carbon storage. We investigated warming drying a field mesocosm experiment northern Minnesota, USA. Large intact soil monoliths removed from...
Abstract. Contrary to observations and models in which trees herbaceous plants are viewed as competitors, we found that an African savanna have positive impacts on biomass production composition, soil nutrient status. In the Turkana District of northwestern Kenya, investigated vegetation gradients along equi‐angular transects radiating from boles individual Acacia tortilis trees. Total averaged 260 ± 17(se) g/m 2 at bole declined 95 8 tree interspaces. Soil organic carbon total nitrogen...
Abstract Atmospheric and climatic change can alter plant biomass production community composition. However, we know little about how climate change‐induced alterations in affect species To better understand will both individual biomass, manipulated atmospheric [CO 2 ], air temperature, precipitation a constructed old‐field ecosystem. Specifically, compared the responses of dominant subdominant to our treatments, explored changes dominance patterns evenness over years. Our study resulted four...
A central question concerning the response of terrestrial ecosystems to a changing atmosphere is whether increased uptake carbon in increasing atmospheric dioxide concentration results greater plant biomass and storage or, alternatively, faster cycling C through ecosystem. Net primary productivity (NPP) closed-canopy Liquidambar styraciflua (sweetgum) forest stand was assessed for three years free-air CO2-enrichment (FACE) experiment. NPP 21% stands exposed elevated CO2, there no loss over...
Explanations for documented increases in woody plant dominance grasslands and savannas of North America include atmospheric CO2 enrichment changes climate, livestock grazing, fire regimes. However, tree/shrub encroachment has also coincided with the eradication a once widespread native herbivore, black-tailed prairie dog (Cynomys ludovicianus). We used field experiments repeat aerial photography to demonstrate that dogs, herbivores granivores associated their colonies, probably maintained...
The influences of prior monsoon-season drought (PMSD) and the seasonal timing episodic rainfall ('pulses') on carbon water exchange in water-limited ecosystems are poorly quantified. *In present study, we estimated net ecosystem CO(2) (NEE) evapotranspiration (ET) before, for 15 d following, experimental irrigation a semi-arid grassland during June August 2003. Rainout shelters near Tucson, Arizona, USA, were positioned contrasting soils (clay sand) planted with native (Heteropogon...
Peatlands comprise a globally important carbon pool whose input-output budgets may be significantly altered by climate change. To experimentally determine the sensitivity of stored in peatlands to change, we constructed mesocosm facility with 54 peat monoliths from bog and fen northern Minnesota, USA. These mesocosms were subjected nine combinations heat water-table levels over eight years. Bog initially accumulated soil carbon, greater gains wetter mesocosms, but after three years no...
The eastern migratory population of monarch butterflies (Danaus plexippus plexippus) has declined by >80% within the last two decades. One possible cause this decline is loss ≥1.3 billion stems milkweed (Asclepias spp.), which monarchs require for reproduction. In an effort to restore a goal established US Fish and Wildlife Service adopted Mexico, Canada, US, we developed scenarios amending Midwestern landscape with milkweed. Scenarios restoration were protected area grasslands, Conservation...
Abstract Phenology is an integrative science that comprises the study of recurring biological activities or events. In era rapidly changing climate, relationship between timing those events and environmental cues such as temperature, snowmelt, water availability, day length are particular interest. This article provides overview observer‐based plant phenology sampling conducted by U.S. National Ecological Observatory Network ( NEON ), resulting data, rationale behind design. Trained...
Abstract Many U.S. national parks are already at the extreme warm end of their historical temperature distributions. With rapidly warming conditions, park resource management will be enhanced by information on seasonality climate that supports adjustments in timing activities such as treating invasive species, operating visitor facilities, and scheduling climate‐related events (e.g., flower festivals fall leaf‐viewing). Seasonal changes vegetation, pollen, seed, fruit production, important...