Scientists & Staff

Anantha Prasad

Research Ecologist
359 Main Road
Delaware, OH, 43015
Phone: 740-368-0103

Contact Anantha Prasad

Current Research

  • Modelling the dynamics of tree species response to various disturbances
  • Evaluating intraspecific variation in tree response by integrating demography and genetics

Research Interests

I am interested in understanding tree species demographic response at a macroecological scale and using ensemble and simulation models to predict future suitable habitats and colonization likelihoods. My current focus is to understand within-species variation by evaluating genetic, ecological and environmental differences among populations under various disturbance regimes using multiple modelling techniques.

Why This Research is Important

Forest health is being increasing affected by both natural and anthropogenic impacts resulting in changing forest landscapes. A comprehensive approach is needed to tackle forest management and conservation issues - for example, in addressing issues like assisted colonization of important tree species. My research focuses on an integrated, multi-stage modelling approach to address the challenge of forest health maintenance in the United States.

Featured Publications & Products

Publications & Products

Research Datasets

  • Peters, Matthew P.; Iverson, Louis R.; Prasad, Anantha M.; Matthews, Stephen N. 2019. DISTRIB-II: habitat suitability of eastern United States trees. Fort Collins, CO: Forest Service Research Data Archive.
  • Matthews, Stephen N.; Iverson, Louis R.; Peters, Matthew P.; Prasad, Anantha M. 2019. Climate change pressures for the conterminous United States: plant hardiness zones, heat zones, growing degree days, and cumulative drought severity. Fort Collins, CO: Forest Service Research Data Archive.

National Research Highlights

Combining FIA and NFI forest inventories of USA and Canada

Collaboration with Canadian Researchers Key to Shared Stewardship of Iconic Tree Species

Year: 2020

Tree inventory data typically are confined to national boundaries and differ in formats and objectives, thus limiting their use for studying species wide ranges. Northern Research Station scientists collaborated with their colleagues in Canada to overcome this barrier to predict current and future habitat quality and calculate colonization likelihoods. Scientists mapped combinations of habitat quality and colonization likelihoods to evaluate management options, including assisted migration.

Figure legend: These maps depict change in an index of drought severity for the period 2070-2099 under multiple climate scenarios. The maps show a large variationin potential drought throughout much of the conterminous US, mostly because of high uncertainty in future precipitation. Based on data from the RPA 2020 Assessment, the ‘warm wet’ figure represents a scenario with increased precipitation and less warming resulting from a relatively rapid reduction of greenhouse gases so that emissions peak ~2040. The ‘hot-wet’ scenario, also with rapid reduction of greenhouse gases, is wet but hot. The ‘hot-slightly dry’ scenario assumes continued current emissions levels for much of this century and is hot with slightly less precipitation, while the ‘hot-dry’ scenario is both dry and hot, resulting in the most severe drought conditions.

Mapping U.S. Drought Projections Helps Foresters Plan for Sustainability

Year: 2018

Droughts are natural disturbances that can cause negative effects on natural ecosystems and also have important social and economic consequences. Researchers are helping land managers prepare for changing climate conditions by developing projections of how drought may change in the future.

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Improving prediction of future habitat distributions under climate change by combining multiple habitat suitability models

Year: 2017

Future habitat distributions are usually forecast using a single model with a single response, such as tree species abundance. Combining multiple models, integrating multiple responses, and looking for consensus and average predictions results in more reliable assessment of future habitat suitability trends under climate warming.

Hemlock woolly adelgid (Adelges tsugae), Ovisacs on the underside of a branch. Michael Montgomery, U.S. Department of Agriculture Forest Service.

Combining Genetics and Environmental Analysis to Assess Conservation Options for Eastern Hemlock

Year: 2016

Eastern hemlock is currently facing a dual threat by the invasive insect hemlock wooly adelgid and anthropogenic climate change. Combining genetic information with distribution models under climate change helps better understand options for the conservation of this imperiled species.

Last modified: Monday, February 20, 2017