Edit Expert Profile

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Gurpal Toor

Professor and Extension Specialist
College Park, MD 20742
Phone: 301-405-1215
Photo of Gurpal Toor
Research Disciplines: Biogeochemistry | Soils/Agronomy | Water Quality

Research Interests

Water quality, nitrogen, phosphorus, watershed biogeochemistry, isotopes, agriculture, nutrient management, soil fertility

Educational Background

I hold a BS Hons in Agriculture and Chemistry, an MS in Soil Chemistry, and a PhD in Environmental Soil Science. I was trained as a Postdoctoral Researcher in the Plant and Soil Science department at the University of Delaware and as a Research Scientist in the Biological and Agricultural Engineering department at the University of Arkansas.

Biographical Sketch

I am a Professor and Extension Specialist in the Department of Environmental Science & Technology. My expertise is in Nutrient Management, Soil Fertility, and Water Quality. From 2007 to 2017, I was an Assistant Professor, Associate Professor, and Full Professor in the Department of Soil and Water Sciences at the University of Florida.

The overall goal of my research and extension program at the University of Maryland is to conduct basic and applied research and extension to (1) increase understanding of environmental issues as related to agricultural and natural ecosystems and (2) solve environmental problems related to nutrient pollution in the water bodies, including the Chesapeake Bay.

Other Research

The specific objectives of my research program are to:

1) Develop, evaluate, and refine innovative tools using nutrient management principles to reduce nitrogen and phosphorus pollution of water bodies while using waste materials (manures, biosolids) and commercial fertilizers.

2) Investigate mechanisms and processes controlling release and transport of nitrogen and phosphorus from agricultural landscape to drainage ditches, streams, and rivers in the Chesapeake Bay watershed and other water bodies.

Current projects:

  1. Reducing Nitrogen and Phosphorus Losses and Protecting Water Quality in the Chesapeake Bay
  2. Managing Nitrogen in Agricultural Production Systems to Optimize Efficiency and Reduce Losses.
  3. Manipulating Phosphorus in the Soil-Plant-Water Continuum.
  4. Assessing the Effectiveness of Soil Health Practices in Enhancing Soil Organic Carbon.

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Jason Keagy

Assistant Research Professor

410 Forest Resources Bldg
University Park, PA 16802

Phone: 814-865-4675
Photo of Jason Keagy
Research Disciplines: Animal Behavior | Genomics

Research Interests

Fish, birds, behavioral ecology, gene expression, biomarkers, stress, emerging contaminants

Biographical Sketch

The Keagy Lab studies animal cognition and flexibility in behavior and physiology to solve conservation and wildlife management problems.

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David Nelson

Professor

301 Braddock Road
Frostburg, MD 21532

Phone: 301-689-7171
Photo of David Nelson

Research Interests

Stable isotope ecology, Ecology and evolution of C4 grasses, Wind-wildlife interactions, Watershed biogeochemistry, Microbial biogeography

Educational Background

  • University of Illinois, Urbana-Champaign, 2005, Ph.D., Ecology
  • Trinity Christian College, 2001, B.A., Biology

Biographical Sketch

Dr. Nelson is a Professor and Director of the Appalachian Laboratory of the University of Maryland Center for Environmental Science in Frostburg, Maryland. He is a broadly trained ecologist who uses chemical signatures called stable isotopes to investigate the effects of environmental changes on ecological and biogeochemical processes. He has worked on a variety of taxa (plants, animals, microbes) and systems (grasslands, forests, lakes, streams) across various temporal scales throughout the world. He founded and directs the Central Appalachians Stable Isotope Facility, which is housed at the Appalachian Lab. As Director, he is responsible for operations and programs of the Lab, including strategic planning and implementation; faculty hiring, mentorship, and promotion; budget and resource planning; external relations; advancement; facilities management and planning; information technology services; and promoting a culture of belonging and civility.

Dr. Nelson has served as vice-chair and chair of the paleoecology section of the Ecological Society of America, as well as vice-chair of the UMCES faculty senate. He serves on the editorial boards of the journals Frontiers in Ecology and the Environment and PeerJ. He is actively involved in various science outreach activities in western Maryland and nearby West Virginia. He received a B.A. in Biology from Trinity Christian College and a Ph.D. in Ecology from the University of Illinois. He held postdoctoral positions at the University of Illinois and Harvard University. He joined the faculty of the Appalachian Lab in 2009, and was a visiting scholar at Nagoya University in Japan in spring 2017.

CESU Projects

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Matthew Gray

Assistant Professor

2020 Horns Point Rd.

Cambridge, MD 21613

Phone: 410-221-8348
Photo of Matthew Gray

Educational Background

  • Oregon State University, Ph.D. Fisheries Science (2009-2016);
  • Drexel University, M.Sc. Environmental Science    (2007-2009);
  • Wagner College, B.Sc. Biology (2001-2005)

Biographical Sketch

I'm an invertebrate ecophysiology who uses physiological metrics and oceanographic data to evaluate species-specific environmental sensitivities, identify habitat suitability, improve restoration strategies, and estimate ecosystem services contributed by suspension-feeding populations. Much of my work has been collaborative and varies from small to large interdisciplinary partnerships.

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Dong Liang

Associate Research Professor

PO Box 38
Solomons, MD 20688

Phone: 410-326-7452
Dong-Liang_CBL
Research Disciplines: Data Science | GIS | Statistics

Research Interests

Spatial sampling, remote sensing, environmental health, bayesian data analyses, spatiotemporal modeling

Educational Background

Unversity of Iowa, Iowa City, 2010, Ph. D., Statistics
University of Minnesota Duluth, 2003, M.S., Applied Mathematics
Shanghai Institute of Technology, 2000, B.S., Computer Science

Biographical Sketch

Dr. Dong Liang's research investigates the statistical issues in synthesizing environmental data sets collected at various places, frequencies, accuracies and ways. He often uses Bayesian hierarchical models and geo-spatial tools to fuse information from survey design and multiple sources. Dr. Liang's collaborations include fisheries, ecosystem science, restoration ecology,  environmental health, spatial epidemiology and social science. He is a founding member of the Environmental Statistics Collaborative, which is hosted at the Chesapeake Biological Lab.

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Matt Fitzpatrick

Professor & Associate Director for Research

301 Braddock Road
Frostburg, MD 21532

Phone: 301-689-7131
Photo of Matt Fitzpatrick

Research Interests

Climate change, species distribution modeling, spatial modeling, biodiversity, habitat suitability, invasive species, climate change impact assessment, biogeography, habitat connectivity, macroecology, conservation assessment

Educational Background

  • Ph.D., Ecology and Evolutionary Biology, University of Tennessee (2008)
  • M.S., Environmental Science, University of Montana (2003)
  • B.S., Mechanical Engineering, The Pennsylvania State University (1997)

Biographical Sketch

I am a quantitative global change ecologist interested in how climate drives ecological patterns and processes, with an emphasis on understanding the distribution of species, patterns of biodiversity, and range expansion of native and introduced organisms. I have worked in both terrestrial and aquatic systems and across scales of biological organization from genes within genomes to species assemblages across the globe.

Ongoing and Recent CESU Research

  • Conduct geospatial analyses to assess habitat connectivity throughout the length of C&O Canal NHP. National Park Service
  • Modeling coastal vulnerability for tidal reaches of the Potomac and Anacostia Rivers. National Park Service

Other Research

  • Evolutionary responses to climate change at range limits: adaptation, migration, and population size at the core, margin, and trailing edge.
  • Managing forests for sustainable harvest and wildlife habitat using earth observations and modeling of forest structure and landscape connectivity.
  • Combining genomics, remote sensing, and geospatial modeling to understand adaptation to growing season length in balsam poplar.
  • Incorporating biotic interactions into models of species assemblages under climate change: A comparison of single-species and community-level approaches.
  • Assessment of climate change impacts on key terrestrial ecosystems and species in the Arabian Gulf countries.
  • Field-testing accelerometers to study landscape phenomics: A citizen-scientist pilot study.
  • Population genomics of bats killed by wind turbines in the central Appalachians.
  • Assessing potential migration pathways and changes in effective population size of hoary bat populations in the central Appalachians.
  • Sampling to Support an Isotopic and Genetic Assessment of Red Bats in Maryland.
  • A biologically-optimized environmental classification of Maryland streams: Assessing impacts of stream burial and responses to climate change.
  • How representative are wind-turbine killed red bats of the broader population in Maryland? An Isotopic and genetic assessment.
  • Review of climate change impacts on key terrestrial ecosystems and species in the Arabian Gulf countries.
  • Improving forecasts of species responses to climatic change: Hierarchical Bayesian analysis of tree distributions across space and time.
  • Modeling the spread of Hemlock Woolly Adelgid using Graph-Theory-Based Network Analysis.
  • Climate change, seed dispersal mutualisms and the future of biodiversity in Western Australia.
  • An assessment of landscape connectivity for grizzly bears in the Greater Yellowstone Ecosystem.

CESU Projects

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Patricia Glibert

Professor

AREL
2020 Horns Point Rd
Cambridge, MD 21601

Phone: 410-221-8422
Photo of Pat Glibert
Research Disciplines: Aquatic Ecology | Marine Ecology | Water Quality

Research Interests

Eutrophication, harmful algal blooms, phytoplankton physiology, transformations of nitrogen, global changes

Educational Background

  • 1974, BA, Skidmore College, Saratoga Springs, NY, Biology [Phi Beta Kappa]
  • 1976, MS, University of New Hampshire, Earth Sciences
  • 1982, PhD, Harvard University, Organismal and Evolutionary Biology

Biographical Sketch

Pat Glibert is a Professor at the University of Maryland Center for Environmental Science (UMCES), Horn Point Laboratory.  She received her Ph.D. from Harvard University and was a Postdoctoral Scholar and an Assistant Scientist at the Woods Hole Oceanographic before moving to the University of Maryland. Dr. Glibert also holds an Honorary Doctorate from Linnaeus University, Sweden, and is a Fellow of the American Association for the Advancement of Science and of the Association for the Sciences of Limnology and Oceanography. Pat’s research centers around questions related to nutrient dynamics, particularly the effects of eutrophication, and algal blooms. Her current work is focused on the linkages between changes in the amounts and forms of nutrient loading, harmful algal blooms (HABs), and changes in aquatic food web structure.

Selected recent publications include:

  • Glibert, P.M. and M.A. Burford. 2017. Globally changing nutrient loads and harmful algal blooms: Recent advances, new paradigms and continuing challenges. Oceanography 30(1): 44-55.
  • Glibert, P.M. 2017. Eutrophication, harmful algae and biodiversity- challenging paradigms in a world of complex nutrient changes. Mar. Poll. Bull. 124: 591-606. http://dx.doi.org/10.1016/j.marpolbul.2017.04.027
  • Glibert, P.M., F.P. Wilkerson, R.C. Dugdale, J.A. Raven, C. Dupont, P.R. Leavitt, A.E. Parker, J.M. Burkholder and T.M. Kana. 2016. Pluses and minuses of ammonium and nitrate uptake and assimilation by phytoplankton and implications for productivity and community composition, with emphasis on nitrogen-enriched conditions. Limnol. Oceanogr. 61: 165-197

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Katia Engelhardt

Research Associate Professor

301 Braddock Road

Frostburg, MD 21532

Phone: 301-689-7140
Photo of Katia Engelhardt
Research Disciplines: Exotic Species | Plant Ecology | Wetlands

Research Interests

Biodiversity, Vallisneria americana, Hydrilla verticillata, roadside vegetation, Castanea dentata, Chesapeake Bay, Hudson River, experimental ecology

Educational Background

  • 1993    B. S., Oregon State University. Animal Science.
  • 1997    M.S., Utah State University. Fisheries and Wildlife Ecology. Evaluation of translocation criteria for Trumpeter swans reintroduced to northern Utah: habitat quality and interactions with Tundra swans.
  • 2000    Ph.D., Utah State University. Ecology. The role of species composition and biodiversity in wetland ecosystem resilience and processes.

Biographical Sketch

Dr. Katia Engelhardt is a Research Associate Professor who received her Ph.D. from Utah State University in 2000 and since then has been at the University of Maryland Center for Environmental Science’s Appalachian Lab where she is studying the ecological consequences of changes in genetic and species diversity. Her research has taken her to a variety of ecosystems but her tendency is to keep her feet wet and her finger nails dirty studying wetland systems. Submersed aquatic macrophytes have long peeked her curiosity about the natural world with the Chesapeake Bay providing a perfect natural laboratory for studying what drives submersed aquatic macrophytes growth and diversity and ways to restore this awesome and important natural resource.

Other Research

Application of genomic analysis to restoration of submersed aquatic vegetation habitat in the tidal Hudson River. Hudson River Foundation. 2015-2018

Resilience of Vallisneria americana in the Chesapeake Bay. Maryland Sea Grant. 2016-2018

Identification of low growing, salt tolerant turfgrass species suitable for use along highway right of way – experimental field trials. Maryland State Highway Administration. 2017-2019

The role of sediments in the maintenance of biodiversity in freshwater marshes: implications for global environmental change. National Science Foundation. 2009-2014.

Citizens Restoring American Chestnuts (CRAC). Chesapeake Bay Trust. 2012-2013.

The dynamic feedback between sediments and vegetation in natural and restored tidal freshwater marshes. Grayce B. Kerr Fund. 2013-2014.

Water celery genotyping, propagation and testing for sensitivity to fluridone in the Croton River. 2019-2021

CESU Projects

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Scott Ensign

Vice President, Assistant Director, Research Scientist

970 Spencer Road
Avondale, PA 19311

Phone: 610-910-0041
Photo of Scott Ensign

Research Interests

Tidal freshwater ecosystems, river herring, phytoplankton, nitrogen, estuary water quality, sea level rise, coastal wetlands, water technology,

Educational Background

  • Post-Doctoral Mendenhall Research Fellow, USGS, Reston, VA
  • Ph.D., Ecology, University of North Carolina at Chapel Hill
  • M.S., Ecology, University of North Carolina at Chapel Hill
  • B.A., Environmental Science, University of North Carolina at Wilmington

Biographical Sketch

I’m an ecosystem ecologist working to discover how plants, animals, and microbes interact within rivers and how the results of those processes influence how people and society interact with rivers. In collaboration with my colleagues, I make biogeochemical measurements, perform experiments, and interpret results using statistical models and analysis. I’m particularly interested in developing new measurement technologies for aquatic environments, exploring how sea level rise affects rivers, and implementing conservation techniques that improve both ecological conditions and the utility people derive from freshwater ecosystems.

CESU Projects

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Eric Davidson

Professor
Appalachian Laboratory, University of Maryland Center for Environmental Science

301 Braddock Road
Frostburg, MD 21532

Phone: 301-689-7204
Photo of Eric Davidson

Research Interests

Nitrogen, carbon, greenhouse gases, nutrient cycles, land use change, nitrous oxide, soil, sustainable agriculture

Educational Background

  • Ph.D. 1986. Department of Forestry, North Carolina State University.
  • A.B. 1978. Oberlin College.  Biology major

Biographical Sketch

Eric A. Davidson is Professor and former Director of the Appalachian Laboratory of the University of Maryland Center for Environmental Science in Frostburg, MD. Previously, he was a Senior Scientist and served a term as President and Executive Director at the Woods Hole Research Center, Woods Hole, MA. His research in biogeochemistry includes the exchange of plant nutrients from the land to streams and groundwater and the exchange of greenhouse gases between the soil and the atmosphere. He works in a variety of ecosystems, including forests and agricultural lands in North and South America. Davidson holds a Ph.D. in forestry from North Carolina State University and held post-doctoral positions in soil microbiology and biogeochemistry at the UC-Berkeley and the NASA Ames Research Center. He is a Fellow of the American Association for the Advancement of Science and is Fellow and Past-President of the 60,000-member scientific society, the American Geophysical Union. He is a Web of Science Highly Cited Researcher. He served as the Coordinator of the North American Center for the International Nitrogen Initiative and was the leader of a Research Coordination Network on Reactive Nitrogen in the Environment. Davidson was a Jefferson Science Fellow working in the Office of Environmental Quality of the U.S. Department of State in 2021-2022. Davidson has written two popular books, You Can’t Eat GNP, which explores the links between economics and ecology for students and laypersons, and Science for a Green New Deal, which connects climate, economics, and social justice.

Other Research

Title:                On-Farm Research on Drainage Water Management to Reduce Nitrogen and Phosphorus Leaching: Trade-Offs with N2O and CH4 Emissions
Source:            U.S. Department Of Agriculture

CESU Projects