A5058304577- Fire effects on ecosystems
- Forest Management and Policy
- Forest ecology and management
- Forest Ecology and Biodiversity Studies
- Ecology and Vegetation Dynamics Studies
- Plant Water Relations and Carbon Dynamics
- Forest Insect Ecology and Management
- Tree-ring climate responses
- Forest Biomass Utilization and Management
- Remote Sensing and LiDAR Applications
- Rangeland and Wildlife Management
- Seedling growth and survival studies
- Peatlands and Wetlands Ecology
- Bioenergy crop production and management
- Soil Carbon and Nitrogen Dynamics
- Lichen and fungal ecology
- Species Distribution and Climate Change
- Tree Root and Stability Studies
- Mycorrhizal Fungi and Plant Interactions
- Botany and Plant Ecology Studies
- Economic and Environmental Valuation
- Conservation, Biodiversity, and Resource Management
- Climate change impacts on agriculture
- Urban Green Space and Health
- Wildlife Ecology and Conservation
University of Vermont
2016-2025
Northern Research Station
2010-2023
Colorado State University
2017-2023
The Nature Conservancy
2014-2023
Warner University
2023
Pacific Northwest Research Station
2021
Virginia Tech
2021
University of Minnesota
2009-2020
Minnesota Department of Natural Resources
2009-2020
University of Wisconsin–Extension
2015-2019
Reducing tree densities through silvicultural thinning has been widely advocated as a strategy for enhancing resistance and resilience to drought, yet few empirical evaluations of this approach exist. We examined detailed dendrochronological data from long-term (> 50 years) replicated experiment determine if density reductions conferred greater and/or droughts, assessed by the magnitude stand-level growth reductions. Our results suggest that generally enhanced drought resilience; however,...
Summary Climate models predict increasing drought intensity and frequency for many regions, which may have negative consequences tree recruitment, growth mortality, as well forest ecosystem services. Furthermore, practical strategies minimizing vulnerability to are limited. Tree population density, a metric of abundance in given area, is primary driver competitive among trees, influences mortality. Manipulating density be mechanism moderating drought‐induced stress reductions, although the...
Increasing evidence indicates that forest disturbances are changing in response to global change, yet local variability disturbance remains high. We quantified this considerable and analyzed whether recent episodes around the globe were consistently driven by climate, if human influence modulates patterns of disturbance. combined remote sensing data on (2001-2014) with in-depth information for 50 protected landscapes their surroundings across temperate biome. Disturbance highly variable,...
Forest managers in the United States must respond to need for climate-adaptive strategies face of observed and projected climatic changes. However, there is a lack on-the-ground forest adaptation research indicate what measures or tactics might be effective preparing ecosystems deal with climate change. Natural resource many areas are also challenged by scant locally regionally relevant information on projections potential impacts. The Adaptive Silviculture Climate Change (ASCC) project was...
Abstract Forests around the world are experiencing increasingly severe droughts and elevated competitive intensity due to increased tree density. However, influence of interactions between drought competition on forest growth remains poorly understood. Using a unique dataset stand‐scale dendrochronology sampled from 6405 trees, we quantified how annual entire populations responds in eight, long‐term (multi‐decadal), experiments with replicated levels density (e.g., intensity) arrayed across...
The introduced hemlock woolly adelgid (HWA) ( Adelges tsugae Annand) has generated widespread tree decline and substantial mortality of eastern Tsuga canadensis (L.) Carrière) throughout the United States. To assess magnitude ecosystem response to this disturbance, we conducted a multi-year study forests with without damage from HWA. Infested had significantly higher HWA-induced foliar loss lower forest floor C:N ratios soil organic matter than uninfested forests. There were no significant...
Gap-based silvicultural systems were developed under the assumption that richness, and diversity of tree species other biota positively respond to variation in size harvest-created canopy gaps. However, varying gap alone often does not meet objectives broader goals address contemporary forest conditions. Recent research highlights need consider site factors history, natural disturbance models, within-gap structure recruitment requirements addition light resources for desired diversity. This...
After more than a decade of damage in pitch pine forests New Jersey, an unprecedented range expansion southern beetle (SPB), Dendroctonus frontalis, has recently occurred with populations established or detected parts the northeastern United States. Widespread tree mortality stands on Long Island, York, area previously free SPB. Tree also been documented several small Connecticut. Trapping surveys have SPB farther north it had known to exist, positive trap catches Connecticut, Massachusetts,...
Abstract There is increasing momentum to implement conservation and management approaches that adapt forests climate change so as sustain ecosystem functions. These range from actions designed increase the resistance of current composition structure negative impacts those transition substantially different characteristics. A component many adaptation will likely include assisted migration future climate‐adapted tree species or genotypes. While forest‐assisted (FAM) has been discussed...
Abstract As global temperatures rise, variation in annual climate is also changing, with unknown consequences for forest biomes. Growing forests have the ability to capture atmospheric CO 2 and thereby slow rising concentrations. Forests’ ongoing sequester C depends on how tree communities respond changes variation. Much of what we know about response comes from tree‐ring records. Yet typical datasets models do not diversity responses that exist within among trees species. We address this...
Abstract Question What factors best characterize tree competitive environments in this structurally diverse old‐growth forest, and do these vary spatially within among stands? Location Old‐growth P icea abies forest of boreal S weden. Methods Using long‐term, mapped permanent plot data augmented with dendrochronological analyses, we evaluated the effect neighbourhood competition on focal growth by means standard indices, each modified to include various metrics trees size, neighbour...