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Aaron Weiskittel

Director (Forestry management and environment)

Bangor, Maine

Publications

  • Detection of Annual Spruce Budworm Defoliation and Severity Classification Using Landsat Imagery
  • Forest Potential Productivity Mapping by Linking Remote-Sensing-Derived Metrics to Site Variables
  • Structural Attributes of Old-Growth and Partially Harvested Northern White-Cedar Stands in Northeastern North America
  • Evaluation of modeling strategies for assessing self-thinning behavior and carrying capacity
  • Evaluation of 10-year temporal and spatial variability in structure and growth across contrasting commercial thinning treatments in spruce-fir forests of northern Maine, USA
  • Influence of browsing damage and overstory cover on regeneration of American beech and sugar maple nine years following understory herbicide release in central Maine
  • Hierarchical Bayesian models for small area estimation of forest variables using LiDAR
  • Does commercial thinning improve stand-level growth of the three most commercially important softwood forest types in North America?
  • Comparison of approaches for estimating individual tree height-diameter relationships in the Acadian forest region
  • Comparison of taper functions applied to eucalypts of varying genetics in Brazil: Application and evaluation of the penalized mixed spline approach
  • Multi-Objective Support Vector Regression Reduces Systematic Error in Moderate Resolution Maps of Tree Species Abundance
  • Individual Tree Attribute Estimation and Uniformity Assessment in Fast-Growing Eucalyptus spp. Forest Plantations Using Lidar and Linear Mixed-Effects Models
  • Above-ground carbon stock in merchantable trees not reduced between cycles of spruce budworm outbreaks due to changing species composition in spruce-fir forests of Maine, USA
  • Assessing spatial and temporal dynamics of a spruce budworm outbreak across the complex forested landscape of Maine, USA
  • Evolution, history, and use of stem taper equations: a review of their development, application, and implementation
  • Effect magnitudes of operational-scale partial harvesting on residual tree growth and mortality of ten major tree species in Maine USA
  • QUANTIFICATION AND INCORPORATION OF UNCERTAINTY IN FOREST GROWTH AND YIELD PROJECTIONS USING A BAYESIAN PROBABILISTIC FRAMEWORK (A DEMONSTRATION FOR PLANTATION COASTAL DOUGLAS-FIR IN THE PACIFIC NORTHWEST, USA)
  • Relative influence of stand and site factors on aboveground live-tree carbon sequestration and mortality in managed and unmanaged forests
  • Comparison of time-based versus state-space stand growth models for tropical hybrid Eucalyptus clonal plantations in Sumatera, Indonesia
  • Development and comparison of various stand- and tree-level modeling approaches to predict harvest occurrence and intensity across the mixed forests in Maine, northeastern US
  • Projecting complex interactions between forest harvest and succession in the northern Acadian Forest Region
  • Drivers of individual tree growth and mortality in an uneven-aged, mixed-species conifer forest
  • Comparing performance of contrasting distance-independent and distance-dependent competition metrics in predicting individual tree diameter increment and survival within structurally-heterogeneous, mixed-species forests of Northeastern United States
  • Spruce budworm tree host species distribution and abundance mapping using multi-temporal Sentinel-1 and Sentinel-2 satellite imagery
  • Aboveground biomass and carbon of the highly diverse Atlantic Forest in Brazil: comparison of alternative individual tree modeling and prediction strategies
  • Development of individual tree growth and yield model across multiple contrasting species using nonparametric and parametric methods in the Hyrcanian forests of northern Iran
  • Understanding characteristics of forest professionals and small woodlot owners for communicating climate change adaptation
  • On studying the patterns of individual-based tree mortality in natural forests: A modelling analysis
  • Influence of sample selection method and estimation technique on sample size requirements for wall-to-wall estimation of volume using airborne LiDAR
  • Climate and atmospheric deposition drive the inter-annual variability and long-term trend of dissolved organic carbon flux in the conterminous United States
  • Ecologically-Based Metrics for Assessing Structure in Developing Area-Based, Enhanced Forest Inventories from LiDAR
  • Calibrating individual tree biomass models for contrasting tropical species at an uneven-aged site in the native Atlantic Forest of Brazil: A direct comparison of alternative approaches, sample sizes, and sample selection methods
  • Forest landowner harvest decisions in a new era of conservation stewardship and changing markets in Maine, USA
  • Sentinel-2 based prediction of spruce budworm defoliation using red-edge spectral vegetation indices
  • Development and evaluation of an individual tree growth and yield model for the mixed species forest of the Adirondacks region of New York, USA (vol 3, 2016)
  • Strategies for enhancing long-term carbon sequestration in mixed-species, naturally regenerated Northern temperate forests
  • Comparing strategies for representing individual-tree secondary growth in mixed-species stands in the Acadian Forest region
  • Evaluating and modeling variation in site-level maximum carrying capacity of mixed-species forest stands in the Acadian Region of northeastern North America
  • Site Quality, Disturbance, and Vegetation Effects on Carbon Storage and Accumulation in Old, Mixed-Species Stands in Central Maine, USA
  • Forest N Dynamics after 25 years of Whole Watershed N Enrichment: The Bear Brook Watershed in Maine
  • Northern mixedwood composition and productivity 50 years after whole-tree and stem-only harvesting with and without post-harvest prescribed burning
  • Modelling variation and temporal dynamics of individual tree defoliation caused by spruce budworm in Maine, US and New Brunswick, Canada
  • Forestry Professionals’ Perceptions of Climate Change Impacts on the Forest Industry in Maine, USA
  • Evaluating the influence of stem form and damage on individual-tree diameter increment and survival in the Acadian Region: implications for predicting future value of northern commercial hardwood stands
  • Synthesizing Disparate LiDAR and Satellite Datasets through Deep Learning to Generate Wall-to-Wall Regional Inventories for the Complex, Mixed-Species Forests of the Eastern United States
  • Drivers of Climate Change Risk Perceptions among Diverse Forest Stakeholders in Maine, USA
  • Effects of Weather Conditions on Tourism Spending: Implications for Future Trends under Climate Change
  • Forest Policies and Adaptation to Climate Change in Maine: Stakeholder Perceptions and Recommendations
  • Detecting White Pine Needle Damage through Satellite Remote Sensing
  • Factors Affecting Operational Cost and Productivity of Ground-Based Timber Harvesting Machines: a Meta-analysis
  • Role of population genetics in guiding ecological responses to climate
  • Quantifying climate-growth relationships at the stand level in a mature mixed-species conifer forest
  • Projected Future Distribution of Tsuga canadensis across Alternative Climate Scenarios in Maine, U.S
  • Individual-Tree Competition Indices and Improved Compatibility with Stand-Level Estimates of Stem Density and Long-Term Production
  • Predicting aboveground biomass with LANDIS-II: A global and temporal analysis of parameter sensitivity
  • Assessing Alternative Silvicultural Prescriptions for Mid-Rotation, Unthinned, Spruce-Fir Stands in Maine
  • A three decade assessment of climate-associated changes in forest composition across the north-eastern USA
  • Assessing the factors influencing natural regeneration patterns in the diverse, multi-cohort, and managed forests of Maine, USA
  • Factors influencing organic-horizon carbon pools in mixed-species stands of central Maine, USA
  • Climate- and soil-based models of site productivity in eastern US tree species
  • Evaluating the long-term influence of alternative commercial thinning regimes and harvesting systems on projected net present value of precommercially thinned spruce-fir stands in northern Maine
  • Variation in stem form and risk of four commercially important hardwood species in the acadian forest: Implications for potential sawlog volume and tree classification systems
  • Evaluating and modelling genus and species variation in height-to-diameter relationships for Tropical Hill Forests in Peninsular Malaysia
  • Influence of Prediction Cell Size on LiDAR-Derived Area-Based Estimates of Total Volume in Mixed-Species and Multicohort Forests in Northeastern North America
  • Development and evaluation of a biomass increment based index for site productivity
  • Assessing the role of natural disturbance and forest management on dead wood dynamics in mixed-species stands of central Maine, USA
  • Modeling forest biomass and growth: Coupling long-term inventory and LiDAR data
  • Weather sensitivity and climate change perceptions of tourists: a segmentation analysis
  • Effect of three partial cutting practices on stand structure and growth of residual black spruce trees in north-eastern Quebec
  • Evaluating the influence of varying levels of spruce budworm defoliation on annualized individual tree growth and mortality in Maine, USA and New Brunswick, Canada
  • A new method for capturing stem taper variation for trees of diverse morphological types
  • An evidence-based review of timber harvesting behavior among private woodland owners
  • Variation in the maximum stand density index and its linkage to climate in mixed species forests of the North American Acadian Region
  • Development and evaluation of individual tree- and stand-level approaches for predicting spruce-fir response to commercial thinning in Maine, USA
  • Tree-level growth and survival following commercial thinning of four major softwood species in North America
  • Light absorption and light-use efficiency of juvenile white spruce trees in natural stands and plantations
  • Effects of multiaged silvicultural systems on reserve tree growth 19 years after establishment across multiple species in the acadian forest in maine, USA
  • Reserve tree mortality in two expanding-gap silvicultural systems 20 years after establishment in the Acadian forest of Maine, USA
  • Effects of uncertainty in upper-stem diameter information on tree volume estimates
  • An agent-based model of private woodland owner management behavior using social interactions, information flow, and peer-to-peer networks
  • Evaluation of forest management effects on the mineral soil carbon pool of a lowland, mixed-species forest in Maine, USA
  • Psychological distance of timber harvesting for private woodland owners
  • Layer Stacking: A Novel Algorithm for Individual Forest Tree Segmentation from LiDAR Point Clouds
  • Implications of land-use change on forest carbon stocks in the eastern United States
  • A call to improve methods for estimating tree biomass for regional and national assessments
  • Linking annual tree growth with eddy-flux measures of net ecosystem productivity across twenty years of observation in a mixed conifer forest
  • Long-term influence of alternative forest management treatments on total ecosystem and wood product carbon storage
  • Occurrence, pattern of change, and factors associated with American beech-dominance in stands of the northeastern USA forest
  • Even low levels of spruce budworm defoliation affect mortality and ingrowth but net growth is more driven by competition
  • Improved accuracy of aboveground biomass and carbon estimates for live trees in forests of the eastern United States
  • Development and evaluation of an individual tree growth and yield model for the mixed species forest of the Adirondacks Region of New York, USA
  • EVALUATION OF ALTERNATIVE METHODS FOR USING LIDAR TO PREDICT ABOVEGROUND BIOMASS IN MIXED SPECIES AND STRUCTURALLY COMPLEX FORESTS IN NORTHEASTERN NORTH AMERICA
  • EVALUATING TRADITIONAL PEER-REVIEW PROCESSES AND THEIR ALTERNATIVES: AN OPINIONATED DISCUSSION
  • Variation in occurrence and extent of internal stem decay in standing trees across the eastern US and Canada: evaluation of alternative modelling approaches and influential factors
  • An imputation/copula-based stochastic individual tree growth model for mixed species Acadian forests: a case study using the Nova Scotia permanent sample plot network
  • Future directions
  • Long-term development of natural regeneration in irregular, mixed stands of silver fir and Norway spruce
  • Testing a new component ratio method for predicting total tree aboveground and component biomass for widespread pine and hardwood species of eastern US
  • Metrics for comparing stand structure and dynamics between Ecological Reserves and managed forest of Maine, USA
  • Refining the Forest Vegetation Simulator for projecting the effects of spruce budworm defoliation in the Acadian Region of North America
  • Forest-Management Modelling
  • Influences of conventional and low-density thinning on the lower bole taper and volume growth of eastern white pine
  • Evaluating traditional peer-review processes and their alternatives: An opinionated discussion
  • Assessing the feasibility of low-density LiDAR for stand inventory attribute predictions in complex and managed forests of Northern Maine, USA
  • Assessing the potential stem growth and quality of yellow birch prior to restoration: A case study in eastern Canada
  • Long-term thinning effects on the leaf area of Pinus strobus L. as estimated from litterfall and individual-tree allometric models
  • Species mixture effects in northern red oak-eastern white pine stands in Maine, USA
  • Assessing and modeling snag survival and decay dynamics for the primary species in the Acadian forest of Maine, USA
  • Evaluation of alternative methods for using LiDAR to predict aboveground biomass in mixed species and structurally complex forests in northeastern North America
  • Comparing strategies for modeling individual-tree height and height-to-crown base increment in mixed-species Acadian forests of northeastern North America
  • Benchmarking and calibration of Forest Vegetation Simulator individual tree attribute predictions across the northeastern United States
  • Hybrid models of forest growth and yield
  • Linking growth models of different resolutions
  • Forest Growth and Yield Modeling
  • Development and evaluation of aboveground small tree biomass models for naturally regenerated and planted species in eastern Maine, U.S.A.
  • Influence of early re-spacing on Sitka spruce branch structure
  • Effects of species composition, management intensity, and shade tolerance on vertical distribution of leaf area index in juvenile stands in Maine, USA
  • Development of branch, crown, and vertical distribution leaf area models for contrasting hardwood species in Maine, USA
  • Projected future suitable habitat and productivity of Douglas-fir in western North America
  • Efficiency of alternative forest inventory methods in partially harvested stands
  • Influence of partial harvesting and site factors on the abundance and composition of natural regeneration in the Acadian Forest of Maine, USA
  • Early stand production of hybrid poplar and white spruce in mixed and monospecific plantations in eastern Maine
  • Managing the middle ground: Forests in the transition zone between cities and remote areas
  • A Bayesian approach for modelling non-linear longitudinal/hierarchical data with random effects in forestry
  • Linking climate, gross primary productivity, and site index across forests of the western United States
  • Factors influencing height-age relationships and recruitment of ponderosa pine regeneration in Northern Arizona
  • Influence of management intensity on the productivity of early successional Acadian stands in eastern Maine
  • Effects of seed source origin on bark thickness of douglas-fir (pseudotsuga menziesii) growing in southwestern Germany
  • Development of regional height to diameter equations for 15 tree species in the North American Acadian Region
  • Assessing model performance in forecasting longterm individual tree diameter versus basal area increment for the primary acadian tree species
  • Estimating and predicting bark thickness for seven conifer species in the Acadian Region of North America using a mixed-effects modeling approach: Comparison of model forms and subsampling strategies
  • Regional stem taper equations for eleven conifer species in the acadian region of north America: Development and assessment
  • Dynamic spatial regression models for space-varying forest stand tables
  • Effects of thinning-induced changes in structural heterogeneity on growth, ingrowth, and mortality in secondary coastal Douglas-fir forests
  • Long-term response of spruce-fir stands to herbicide and precommercial thinning: Observed and projected growth, yield, and financial returns in central Maine, USA
  • Multivariate spatial regression models for predicting individual tree structure variables using LiDAR data
  • Development of height to crown base models for thirteen tree species of the North American Acadian Region
  • Maine woodland owner perceptions of long rotation woody biomass harvesting and bioenergy
  • Assessing and modeling standing deadwood attributes under alternative silvicultural regimes in the Acadian forest region of Maine, USA
  • Linking remote sensing and various site factors for predicting the spatial distribution of eastern hemlock occurrence and relative basal area in Maine, USA
  • Measurement and prediction of bark thickness in Picea abies: Assessment of accuracy, precision, and sample size requirements
  • Forest Growth and Yield Modeling Introduction
  • Components of tree-list models
  • Forest site evaluation
  • Implementation and use
  • Forest Growth and Yield Modeling Preface
  • Indices of competition
  • Individual-tree static equations
  • Influences of Conventional and Low-Density Thinning on the Lower Bole Taper and Volume Growth of Eastern White Pine
  • Maximum and Largest Crown Width Equations for 15 Tree Species in Maine
  • Sampling strategies for efficient estimation of tree foliage biomass
  • Development of a hybrid model for intensively managed Douglas-fir in the Pacific Northwest
  • Models on branch characteristics of wide-spaced Douglas-fir
  • Evaluation of alternative approaches for predicting individual tree volume increment
  • Comparisons of three different methods used to generate forest landscapes for spatial harvest scheduling problems with adjacency restrictions
  • Analysis of within- and between-crown variability for mechanistic crown models
  • Modeling branch growth and mortality to silvicultural treatments in coastal Douglas-fir plantations: Implications for predicting tree growth
  • Long-term effects of precommercial thinning on the stem dimensions, form and branch characteristics of red spruce and balsam fir crop trees in Maine, USA
  • Approaches for modeling vertical distribution of maximum knot size in black spruce: A comparison of fixed- and mixed-effects nonlinear models
  • Canopy gap characteristics of an oak-beech-maple old-growth forest in Northeastern Ohio
  • Maximum and largest crown width equations for 15 tree species in Maine
  • Effect of wide spacing on tree growth, branch and sapwood properties of young Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] in south-western Germany
  • Branch surface area and its vertical distribution in coastal Douglas-fir
  • Tree-level models
  • Model construction
  • Evaluation of Alternative Approaches for Predicting Individual Tree Volume Increment
  • Stand structure and composition 32 years after precommercial thinning treatments in a mixed northern conifer stand in central Maine
  • Intensive management influence on Douglas fir stem form, branch characteristics, and simulated product recovery
  • Sources of variation in the self-thinning boundary line for three species with varying levels of shade tolerance
  • Modeling crown structural responses to competing vegetation control, thinning, fertilization, and Swiss needle cast in coastal Douglas-fir of the Pacific Northwest, USA
  • Comparison of model forms for estimating stem taper and volume in the primary conifer species of the North American Acadian Region
  • Response of branch growth and mortality to silvicultural treatments in coastal Douglas-fir plantations: Implications for predicting tree growth
  • Branch characteristics of widely spaced Douglas-fir in south-western Germany: Comparisons of modelling approaches and geographic regions
  • A hybrid model for intensively managed Douglas-fir plantations in the Pacific Northwest, USA
  • Influence of Swiss needle cast on foliage age-class structure and vertical foliage distribution in Douglas-fir plantations in north coastal Oregon
  • Modeling annualized occurrence, frequency, and composition of ingrowth using mixed-effects zeroinflated models and permanent plots in the Acadian Forest Region of North America
  • Response of Douglas-fir leaf area index and litterfall dynamics to Swiss needle cast in north coastal Oregon, USA
  • Modelling primary branch frequency and size for five conifer species in Maine, USA
  • Species differences in total and vertical distribution of branch- and tree-level leaf area for the five primary conifer species in Maine, USA
  • Sources of within- and between-stand variability in specific leaf area of three ecologically distinct conifer species
  • Modeling top height growth of red alder plantations
  • External knot size and frequency in black spruce trees from an initial spacing trial in Thunder Bay, Ontario
  • Cutpoint analysis for models with binary outcomes: A case study on branch mortality
  • Annualized diameter and height growth equations for Pacific Northwest plantation-grown Douglas-fir, western hemlock, and red alder
  • Addressing climate change in the forest vegetation simulator to assess impacts on landscape forest dynamics
  • Leaf mass per area relationships across light gradients in hybrid spruce crowns
  • Predicting the number of trees in small diameter classes using predictions from a two-parameter Weibull distribution
  • COMPARISONS OF THREE DIFFERENT METHODS USED TO GENERATE FOREST LANDSCAPES FOR SPATIAL HARVEST SCHEDULING PROBLEMS WITH ADJACENCY RESTRICTIONS
  • Modeling silvicultural treatments
  • Sources of Variation in the Self-Thinning Boundary Line for Three Species with Varying Levels of Shade Tolerance
  • Sampling Strategies for Efficient Estimation of Tree Foliage Biomass
  • Mortality
  • Whole-stand and size-class models
  • Model evaluation and calibration
  • Process-based models
  • Approaches for Modeling Vertical Distribution of Maximum Knot Size in Black Spruce: A Comparison of Fixed- and Mixed-Effects Nonlinear Models
  • Seeding, regeneration, and recruitment
  • Long-Term Effects of Precommercial Thinning on the Stem Dimensions, Form and Branch Characteristics of Red Spruce and Balsam Fir Crop Trees in Maine, USA
  • Stand Structure and Composition 32 Years after Precommercial Thinning Treatments in a Mixed Northern Conifer Stand in Central Maine
  • Canopy gap characteristics of an oak-beech-maple old-growth forest in northeastern Ohio
  • A Comprehensive and Spatially Explicit Regional Vulnerability Assessment of the Forest Industry to Climate Change
  • Integrating historical observations alters projections of eastern North American spruce–fir habitat under climate change
  • Evaluation of projected carbon accumulation after implementing different forest management treatments in mixed-species stands in northern Maine
  • Testing a generalized leaf mass estimation method for diverse tree species and climates of the continental United States
  • Estimating regional timber supply and forest carbon sequestration under shared socioeconomic pathways: A case study of Maine, USA
  • Carbon conundrums: Do United States' current carbon market baselines represent an undesirable ecological threshold?
  • Examining approaches for modeling individual tree growth response to thinning in Norway spruce
  • Usefulness and Need for Digital Technology to Assist Forest Management: Summary of Findings from a Survey of Registered Foresters
  • Multi-Source Mapping of Forest Susceptibility to Spruce Budworm Defoliation Based on Stand Age and Composition across a Complex Landscape in Maine, USA
  • Can a multistage approach improve individual tree mortality predictions across the complex mixed-species and managed forests of eastern North America?
  • Relative density as a standardizing metric for the development of size-density management charts
  • Relative Density as a Standardizing Metric for the Development of Size-Density Management Charts
  • Tree-level responses to commercial thinning in spruce-fir forests across northern Maine, USA
  • Evaluation of modeling strategies for assessing self‐thinning behavior and carrying capacity
  • Whoa on the wobble! Stem sinuosity in juvenile Douglas-fir across levels of genetic gain, silvicultural treatments, site conditions, and climatic variables in the Pacific Northwest
  • Influence of climate zone shifts on forest ecosystems in northeastern United States and maritime Canada

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Co-workers & collaborators

Christopher Woodall

USDA Project Leader - Durham, NH, USA

Christopher Woodall

Philip Radtke

Philip Radtke

Aaron Weiskittel's public data