A5075138214- Forest Insect Ecology and Management
- Water Quality and Pollution Assessment
- Urban Stormwater Management Solutions
- Forest Ecology and Biodiversity Studies
- Smart Materials for Construction
- Insect and Pesticide Research
- Plant and animal studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Insect-Plant Interactions and Control
- Rangeland Management and Livestock Ecology
- Sustainability in Higher Education
- African Botany and Ecology Studies
- Microbial Community Ecology and Physiology
- Organic Food and Agriculture
- Environmental Education and Sustainability
- Plant Water Relations and Carbon Dynamics
- Fish Ecology and Management Studies
- Forest ecology and management
- Analytical Chemistry and Sensors
- Urban Agriculture and Sustainability
- Food Waste Reduction and Sustainability
- Mycorrhizal Fungi and Plant Interactions
- Sustainability and Climate Change Governance
- Fire effects on ecosystems
- Insect behavior and control techniques
Dartmouth College
2016-2023
Dartmouth Hospital
2018-2023
University of KwaZulu-Natal
2022
Global Environment Facility
2022
University of South Africa
2022
University of California, Berkeley
2016
Significance In lakes, chloride is a relatively benign ion at low concentrations but begins to have ecological impacts as rise into the 100s and 1,000s of mg L −1 . this study, we investigate long-term trends in 371 freshwater lakes North America. We find that Midwest Northeast America, most urban rural are surrounded by >1% impervious land cover show increasing trends. Expanding on finding, thousands these regions risk salinization. Keeping “fresh” critically important for protecting...
Lakes in the Midwest and Northeast United States are at risk of anthropogenic chloride contamination, but there is little knowledge prevalence spatial distribution freshwater salinization. Here, we use a quantile regression forest (QRF) to leverage information from 2773 lakes predict concentration all 49 432 greater than 4 ha 17-state area. The QRF incorporated 22 predictor variables, which included lake morphometry characteristics, watershed land use, distance nearest road interstate. Model...
Abstract Anthropogenic sources of chloride in a lake catchment, including road salt, fertilizer, and wastewater, can elevate the concentration freshwater lakes above background levels. Rising concentrations impact ecology ecosystem services such as fisheries use drinking water sources. To analyze spatial extent magnitude increasing lakes, we amassed database 529 Europe North America that had greater than or equal to ten years data. For each lake, calculated climate statistics mean annual...
Lakes are active processors of organic carbon (OC) and play important roles in landscape global cycling. Allochthonous OC loads from the landscape, along with autochthonous primary production, mineralized lakes, buried lake sediments, exported via surface or groundwater outflows. Although these processes provide a basis for conceptual understanding budgets, few studies have integrated fluxes under dynamic modeling framework to examine their interactions relative magnitudes. We developed...
In the western United States, forests are experiencing novel environmental conditions related to a changing climate and suppression of historical fire regime. Mixed-conifer forests, considered resilient disturbance due their heterogeneity in structure composition, appear be shifting more homogeneous state, but timescale these shifts is not well understood. Our objective was assess effects on stand dynamics demographic rates an old-growth mixed-conifer forest Sierra Nevada. We used Bayesian...
Sirex noctilio Fabricius (Hymenoptera, Siricidae) is rare and rarely studied where it native in Eurasia, but a widespread pest of pines the Southern Hemisphere. Here we report on abundance, basic biology, host use patterns natural enemies S. Galicia, Spain. Most trees attacked by failed to produce any adult progeny: >90% emergences came from <20% trees. The highest reproduction was Pinus pinaster, followed sylvestris radiata. proportions requiring 1, 2 or 3 years for development were 0.72:...
Abstract Accidental and intentional global movement of species has increased the frequency novel plant–insect interactions. In Patagonia, European woodwasp, Sirex noctilio , invaded commercial plantations North American pines. We compared patterns resin defenses S. -caused mortality at two mixed-species forests near San Carlos de Bariloche, Argentina. observed lower levels flow higher in Pinus contorta with ponderosa . general, attacked trees neighboring trees. Resin production P. was not...
Considering increasing water insecurities related to climate change, there is a growing need for effective collaboration across core-periphery boundaries restore and regenerate watershed vitality. It has been demonstrated that collaborative governance when core group engaging in boundary acting, fostering interpersonal relationships, exchanging information, sharing activities amongst stakeholders social network. To better understand how the supports collaborates with peripheral actors, we...
There is increasing interest in using “real-world pedagogy” to train students ways that make them better able contribute toward a more sustainable society. While there robust body of literature on the competencies need as sustainability professionals, lack specific guidance how teach for competency development or structure program course support development. Our research addresses this gap through description and autoethnographic reflection design early implementation “real-world” course....
The Sirex woodwasp noctilio Fabricius (Hymenoptera: Siricidae), a widespread invasive pest of pines in the Southern Hemisphere, was first detected North America 2004. This study assessed impacts life history traits, host resistance and species interactions on demography S. New York, Pennsylvania Vermont, then compared key metrics to those found native range Galicia, Spain. Many trees naturally attacked by produced no adult woodwasps, with 5 38 infested (13%) sampled across six sites yielding...
Abstract Resolving the relative contributions of top-down versus bottom-up drivers vegetation dynamics is a major challenge in drylands. In coming decades, growing livestock populations and shifts water availability will simultaneously impact many arid systems, but lack empirical data on plant responses to these pressures limits understanding how plants respond. Here, we combine ground drone observations from an herbivore exclosure experiment identify ungulate visitation patterns their...
It has become fashionable to call for ending food charity. Anti-hunger activists and scholars advocate instead ensuring through government programs that everybody enough money or vouchers purchase all the they need. Their criticisms rightly denounce charitable being incapable of eradicating hunger, but neglect advantages charity confers as a non-market practice—that is, an activity produces distributes is not sale. Our interviews with practitioners in Brattleboro, Vermont, area demonstrated...