A5029975365- Species Distribution and Climate Change
- Amphibian and Reptile Biology
- Wildlife Ecology and Conservation
- Animal Behavior and Reproduction
- Ecology and Vegetation Dynamics Studies
- Remote Sensing in Agriculture
- Land Use and Ecosystem Services
- Rangeland and Wildlife Management
- Flood Risk Assessment and Management
- Carcinogens and Genotoxicity Assessment
- Peatlands and Wetlands Ecology
- Ecosystem dynamics and resilience
- Cancer-related Molecular Pathways
- Synthetic Aperture Radar (SAR) Applications and Techniques
- DNA Repair Mechanisms
- Coastal wetland ecosystem dynamics
- Economic and Environmental Valuation
- Soil erosion and sediment transport
- Urban Heat Island Mitigation
- Insect and Arachnid Ecology and Behavior
- Environmental DNA in Biodiversity Studies
Upper Midwest Environmental Sciences Center
2014-2025
United States Geological Survey
2014-2025
North Central Soil Conservation Research Laboratory
2014
University of California, San Francisco
1995
Since amphibian declines were first proposed as a global phenomenon over quarter century ago, the conservation community has made little progress in halting or reversing these trends. The early search for "smoking gun" was replaced with expectation that are caused by multiple drivers. While field observations and experiments have identified factors leading to increased local extinction risk, evidence effects of drivers is lacking at large spatial scales. Here, we use 389 time-series 83...
Changing climate will impact species' ranges only when environmental variability directly impacts the demography of local populations. However, measurement demographic responses to change has largely been limited single species and locations. Here we show that amphibian communities are responsive climatic variability, using >500,000 time-series observations for 81 across 86 North American study areas. The effect on colonization persistence probabilities varies among eco-regions depends...
Abstract The salamander chytrid fungus ( Batrachochytrium salamandrivorans [Bsal]) is causing massive mortality of salamanders in Europe. potential for spread via international trade into North America and the high diversity has catalyzed concern about Bsal U.S. Surveillance programs invading pathogens must initially meet challenges that include low rates occurrence on landscape, prevalence at a site, imperfect detection diagnostic tests. We implemented large-scale survey to determine if was...
Conservationists and agriculturists face unprecedented challenges trying to minimize tradeoffs between increasing demands for food, fiber, feed, biofuels the resulting loss or reduced values of other ecosystem services, such as those derived from wetlands biodiversity (Millenium Ecosystem Assessment 2005a, 2005c; Maresch et al. 2008). The Food, Conservation, Energy Act 2008 (Pub. L. 110-234, Stat. 923, HR 2419, also known Farm Bill) reauthorized USDA provide financial incentives agricultural...
Wetlands provide ecosystem goods and services vitally important to humans. Land managers policymakers working conserve wetlands require regularly updated information on the statuses of across landscape. However, are challenging map remotely with high accuracy consistency. We investigated use multitemporal polarimetric synthetic aperture radar (SAR) data acquired Canada’s Radarsat-2 system track within-season changes in wetland vegetation surface water. speculated, a priori, how temporal...
Abstract Batrachochytrium dendrobatidis (Bd) is a globally distributed fungal pathogen of amphibians that has contributed to one the largest disease‐related biodiversity losses in wildlife. Bd regularly viewed through lens global wildlife epizootic because spread highly virulent genetic lineages resulted well‐documented declines and extinctions multiple amphibian species. However, current state occurrence, host range, impacts, ecological drivers remains poorly understood outside most...
Long-term, interdisciplinary studies of relations between climate and ecological conditions on wetland-upland landscapes have been lacking, especially integrated across scales meaningful for adaptive resource management. We collected data in situ at individual wetlands, via satellite surrounding 4-km2 landscape blocks, to assess annual weather dynamics, snow duration, phenology, wetland surface-water availability, amphibian presence calling activity, greenness, evapotranspiration four U.S....
Assessing climate-related ecological changes across spatiotemporal scales meaningful to resource managers is challenging because no one method reliably produces essential data at both fine and broad scales. We recently confronted such challenges while integrating from ground- satellite-based sensors for an assessment of four wetland-rich study areas in the U.S. Midwest. examined relations between temperature precipitation a set variables measured on ground individual wetlands another via...
The U.S. Fish and Wildlife Service listed Anaxyrus canorus, the Yosemite toad, as federally threatened in 2014 based upon reported population declines vulnerability to global-change factors. A. canorus lives only California's central Sierra Nevada at medium sub-alpine elevations. Lands throughout its range are protected from development, but climate other factors potentially can limit populations. reproduces ultra-shallow wetlands that typically hydrate seasonally via melting of winter...
Extensive corn production in the midwestern United States has physically eliminated or fragmented vast areas of historical amphibian habitat. Midwestern farmers also apply large quantities fertilizers and herbicides, which can cause direct indirect effects on amphibians. Limited field research regarding statuses populations near left resource managers, conservation planners, other stakeholders needing more information to improve strategies management plans. We repeatedly sampled amphibians...
Landscapes of interwoven wetlands and uplands offer a rich set ecosystem goods services. Managing lands to maximize services requires information that distinguishes change caused by local actions from broader-scale shifts in climate, land use, other forms global change. Satellite airborne sensors collect valuable data for this purpose, especially when the are analyzed along with collected ground-based sensors. The U.S. Geological Survey (USGS) is using remote sensing technology way as part...