Co-Directors of HTIRC

Image of Mark Coggeshall

Mark Coggeshall

USDA Forest Service- Northern Research Station Supervisory Senior Research Scientist

mcoggeshall@fs.fed.us or mcoggesh@purdue.edu

Dr. Coggeshall has spent twenty years working in Indiana developing genetic improvement programs for a number of fine hardwood tree species.  Learn More

Matthew D. Ginzel

Matthew D. Ginzel

Associate Professor, Forest Entomologist

mginzel@purdue.edu

Dr. Ginzel is a forest entomologist with expertise in chemical ecology; and he combines these areas of expertise to develop methods for reducing the impact of native and exotic insect pests of hardwoods. Learn More

Research Scientists

John Couture image

John Couture

Assistant Professor of Entomology

couture@purdue.edu 

Plant and insect chemical ecology, biochemical spectroscopy, landscape and ecosystem ecology,
global change ecology, community ecology, plant defense theory, gene x environment
interactions, trophic-level interactions, remote sensing, ecosystem monitoring. Learn More

Songlin Fei

Songlin Fei

Associate Professor of Measurements & Quantitative Analysis

sfei@purdue.edu

Dr. Fei’s research program has two primary directions. The first arm of my research program focuses on mapping and modeling of invasive exotic species (IES). The other arm of my research program focuses on large-scale ecosystem dynamics in forests in the eastern United States. Learn More

Image of Brady Hardiman

Brady S. Hardiman

Assistant Professor of Urban Ecology

bhardima@purdue.edu

Brady’s research focuses on understanding the interaction of structure and function in coupled natural and human ecosystems. Specific interests include the role of vegetation in urban carbon cycling and the influence of forest canopy structure on long-term carbon sequestration rates. His research is directed toward improving management strategies for urban and rural forests to optimize provision of ecosystem services such as carbon storage and climate mitigation. Learn More

Douglass F. Jacobs

Douglass F. Jacobs

Fred M. van Eck Professor of Forest Biology, Associate Head in the Department of Forestry and Natural Resources, Director of the Tropical HTIRC

djacobs@purdue.edu

Dr. Jacobs’ research focuses on the ecophysiology of forest regeneration in response to management and environmental stress. He has specific expertise in nursery systems, plant quality, and plantation establishment to promote reforestation and restoration of threatened forest trees or degraded sites. Learn More

Michael A. Jenkins

Michael A. Jenkins

Associate Professor of Forest Ecology

jenkinma@purdue.edu

Dr. Jenkins’ research focuses on the interactions between disturbance and abiotic factors and their synergistic influence on ecosystem structure and function. Specifically, he is interested in how human-induced changes to native disturbance regimes and species pools have altered the distributions, interactions, and coexistence of species through changes in ecological processes. Learn More

Jennifer Juzwik

Jennifer Juzwik

USDA Forest Service, Research Plant Pathologist

jjuzwik@fs.fed.us

Dr. Juzwik’s research interests are in the etiology, epidemiology and management of significant hardwood tree diseases. Current research is being conducted on Thousand Cankers Disease in several eastern states and oak wilt and evaluation of phytosanitary treatment of hardwood logs for domestic and international trade. Learn More

Robert “Bob” Karrfalt

Robert “Bob” Karrfalt (Retired)

USDA Forest Service, National Seed Laboratory Director

rkarrfalt@fs.fed.us

Bob works to advance ecological restoration and reforestation through improved native seed handling.  Current research focuses are using equilibrium relative humidity measurements to prepare seeds for storage, germination of deeply dormant seeds, and development of low cost seed cleaning equipment.  Conducting seed workshops for practitioners is a favorite.  He joined the HTIRC in 2000.  Bob began his career in seeds 1975 as the assistant director of the USDA Forest Service National Seed Laboratory where he has served as Lab Director from 1986 until the present. Learn More

Shaneka Lawson

Shaneka S. Lawson

USDA, Forest Service, Research Plant Physiologist & Adjunct Assistant Professor

sslawson@fs.fed.us or sslawson@purdue.edu

Dr. Lawson’s research interests are bioinformatics (genomics, transcriptomics), evaluating differences in the gene expression of forest trees responding to abiotic stress. She also researches the process of figure formation in wood. Learn More

Image of Rick Meilan

Richard Meilan

Professor of Genetics

rmeilan@purdue.edu

Dr. Meilan uses molecular tools to investigate the genetic mechanisms by which key aspects of tree growth and development are controlled.  He is also attempting to domesticate and add value to various tree species by genetically engineering them to express genes that impact environmentally beneficial and commercially important traits. Learn More

Paula M. Pijut

Paula M. Pijut (Retired)

USDA Forest Service, Research Plant Physiologist and Adjunct Associate Professor with FNR & Horticulture and Landscape Architecture

ppijut@fs.fed.us or ppijut@purdue.edu

Dr. Pijut’s research interest is in forest tree biotechnology, with emphasis in development of woody plant tissue culture, gene modification, and clonal propagation technologies of tree species for conservation and restoration. Learn More

Carolyn “Carrie” Pike

Carolyn “Carrie” Pike

USDA Forest Service, Northeast Area Regeneration Specialist & Adjunct Assistant Professor

cpike@fs.fed.us or pikec@purdue.edu

Dr. Pike has extensive experience with tree breeding, conducting applied research, and establishing and analyzing common garden studies. She provides technical assistance to state nurseries in the Northeast and Midwest, and providing advice on genetics and restoration programs nationwide through her involvement in the RNGR program. Learn More

Michael R. Saunders

Michael R. Saunders

Associate Professor of Ecology and Natural Resources

msaunder@purdue.edu

Research in the Saunders’ lab centers on the improvement of hardwood silviculture in deciduous forests of North America. His portfolio is diverse, ranging from mid-rotation pruning and thinning practices in precision silviculture systems to development of natural disturbance-based approaches for restoration silviculture systems. Learn More

Guofan Shao

Professor of Forestry

shao@purdue.edu

Dr. Shao’s overall research interest is digital forestry technologies (DFT), including remote sensing, geographic information systems (GIS), forest modeling, and forestry decision-support systems (DSS). Shao applies DFT in better understanding forest landscape changes and sustaining the management of forest resources. Dr. Shao is especially interested in developing algorithms for accurate land use and land cover mapping with remote sensing, developing web-based GIS protocols for land use analysis and forest conservation, developing applicable forest simulation models for forestry professionals, and developing user-friendly forestry DSS for assisting forestry decision making.  Learn More

 

Keith E. Woeste

Keith E. Woeste

USDA Forest Service, Molecular Geneticist & Adjunct Assistant Professor

kwoeste@fs.fed.us or woeste@purdue.edu

Dr. Woeste’s studies the genetics of forest trees including the development and use of DNA markers and DNA sequence data to understand the genetic variability of forest resources, the evolution and spatial distribution of that variability, and the breeding and selection of trees for plantations and for species restoration. Learn More