Research Projects

David Lansing

Calculating Carbon: Expertise and Power in the Creation of Carbon Forestry Offsets

A lush green landscape with dense vegetation in the foreground and misty, faintly visible mountains in the distance under soft, hazy lightThis project examines the social relations of power, knowledge, and technology that are involved in establishing carbon offsets among indigenous smallholders in Costa Rica. It examines how complex agricultural practices are interpreted by scientists and economists in the process of creating a carbon “price tag” for land use changes, and the resulting impacts of this process on indigenous land use and livelihoods.

Funding: Social Science Research Council
IIE Fulbright

Understanding the Effectiveness of Ecosystem Service Payments: An Analysis a of the Conditions of Additionality Among Smallholders in Costa Rica

A posted sign stands among trees in a forested area. The sign includes Spanish text indicating environmental service protections and prohibitions on hunting and tree cutting, along with organizational logosThis project examines the effectiveness of Costa Rica’s long–running payments for ecosystem services program among smallholders. It does so by testing whether state payments are producing additional forest cover or subsidizing status quo patterns of reforestation. It also examines the role of various other state institutions in encouraging forms of fallow management in ways that create potential sites where PES can be additional. Doing so, this project contextualizes PES outcomes within historically and geographically complex state–peasant relationships.

Funding: National Science Foundation
Maryland Institute for Policy Analysis and Research


Junmei Tang

The Analysis of Spatial–Temporal Dynamics of Urban Landscape Structure: A Comparison of Two Petroleum-Oriented Cities

A multi‑panel scientific figure showing grayscale microscopic images arranged in labeled columns and rows, a flowchart diagram outlining experimental steps, and colored fluorescence microscopy images at the bottom labeled by channel and merged views.This research project developed a fuzzy cellular automata model based on the subpixel fractions extracted from multitemporal satellite images and discusses the relationship between sophisticated remote sensing techniques and an urban process model within the socioeconomic dimension. The major objectives include incorporating the subpixel membership derived from remote sensing images into fuzzy cellular automata model and calibrate this subcell urban landscape models.

Funding: UMBC Internal Funding: Summer Faculty Fellowships (SFF)

Threatened Urban Green Places: A Gradient Analysis of Economic and Ecological Values of Greenness in Baltimore-Washington Corridor Area

A 3×3 grid of maps compares land cover across 1986, 1997, and 2004. Each column represents one year, and each row shows a different land‑cover type: built‑up areas in red, barren land in yellow, and forest or tree cover in green, illustrating changes over time.This research project identified economic and ecological function of urban greenness and to examine how they changed during the urbanization in Baltimore-Washington corridor area in recent 20 years. We investigated the vegetation pattern and change, identify the role of urbanization in the change of biophysical parameter of urban tree through field measurement and advanced remote sensing techniques.

Funding: UMBC Internal Funding: Summer Faculty Fellowships (SFF)

Collaborators: Stuart S. Schwartz, faculty
Weibing Wang, student

Moving Beyond Structural Heterogeneity and Process Complexity in an Agricultural Watershed: An Integrative Social-Ecological-Hydrological Framework

A composite scientific figure showing a watershed map with boundaries and stream networks on the left, eight colored maps of the same watershed on the right representing different data layers or time periods, and several line graphs below illustrating hydrological trends over time.This research project will integrate research and education activities that investigate socioeconomic development, biogeophysical conditions, ecological dynamics and hydrological process to explore the trajectories of nutrient transportation in agricultural watersheds. The work will analyze how these processes impact the heterogeneous structure and complex process of the basin in agricultural settings.

Funding: NSF, pending.

Collaborator: Weibing Wang, student

Satellite–Derived Mechanism Studies on Socioeconomic Development, Urban Land Use, and Climate Change in the Urbanized United States: An Interdisciplinary Social-Ecological-Atmospheric Framework

A map of the United States displays red dots and shaded red squares indicating varying data values across regions, with a color scale on the right ranging from light to dark red to represent increasing value ranges.The principal objective of this proposal is to develop an interdisciplinary framework to incorporate the multiple NASA satellite images to systematically study the land surface process and its impact on the carbon sequestration and greenhouse gas emission in the highly urbanized area of the United States.

Collaborators: Jianwu Tang (Marine Biology Laboratory), faculty
Qianlai Zhang (Purdue University), faculty


Dawn Beihler

Community environmental management, mosquito control, and environmental justice

A close‑up view of a mosquito with black‑and‑white patterned legs feeding on human skin, its proboscis inserted as it rests lightly on the surface.In collaboration with vector ecologists and public health scholars at Cary Institute of Ecosystem Studies and University of Maryland, College Park, this project examines community participation in control of mosquitoes that carry West Nile Virus. UMBC researchers conduct community meetings and focus groups and facilitate data collection by citizen–scientists.

Funding: pending

Collaborators: Takiya Louers, student


Claire Welty

Regional Climate Variability and Patterns of Urban Development – Impacts on the Urban Water Cycle and Nutrient Export (1/1/11-12/31/15)

A color‑gradient elevation map showing terrain that shifts from low areas in blue to higher areas in green, yellow, and red, revealing valleys, ridges, and varied topography.The goal of this project is to evaluate interactions between urban development patterns and the hydrologic cycle and associated nutrient cycles, within the context of regional and local climate variability. Our specific objective is to create a modeling system capable of simulating the feedback relationships that control urban water sustainability.

Funding: NSF Water Sustainability and Climate Program. Total project budget $5,000,000; UMBC budget $1,400,000.

Collaborators: Andrew J. Miller, faculty

Michael McGuire (Towson), faculty

Elie Bou-Zeid (Princeton), faculty

James Smith (Princeton), faculty

Elena Irwin (Ohio State), faculty

Peter Groffman (Cary Institute of Ecosystem Studies), faculty

Sujay Kaushal (University of Maryland-College Park), faculty

Art Gold (URI), faculty

Charles Towe (Penn State), faculty

Allen Klaiber (University of Maryland-Colege Park), faculty

Morgan Grove (U.S. Forest Service), faculty

Ed Doheny (U.S. Geological Survey), faculty

Dynamic Coupling of the Water Cycle with Patterns of Urban Growth (9/1/07-8/31/11, currently in no-cost extension)

An aerial view of a hilly urban area showing residential neighborhoods, streets, and patches of green space, with yellow outlines marking roads or boundaries and blue and green shaded regions indicating different land‑use zones.This project links an urban growth model (SLEUTH) with a fully–coupled, physically–based three–dimensional hydrologic model (PARFLOW–CLM) to evaluate the effects of growth on water availability and limits to water supply using the Baltimore metropolitan region as a case study.

Additional work involves investigation of the relationship between ages and patterns of urban development and watershed hydrologic response to storm events.

Funding: NSF Coupled Natural and Human Systems Program. Total project budget $1,400,000; UMBC budget $853,646.

Collaborators: Andrew J. Miller, faculty

Bernadette Hanlon (formerly UMBC, now Ohio State), faculty

Michael McGuire (formerly UMBC, now Towson), faculty

James A. Smith (Princeton), faculty

Mary Lynn Baeck (Princeton), faculty

Claire Jantz (Shippensburg), faculty

Scott Drzyzga (Shippensburg), faculty

Reed Maxwell (Colorado School of Mines), faculty

Ed Doheny (U.S. Geological Survey), faculty

Garth Lindner (Geography and Environmental Systems), graduate research assistant

Aditi Bhaskar (Chemical, Biochemical and Environmental Engineering), graduate research assistant


Steward Pickett

Baltimore Ecosystem Study, Ecological Research Phase III: Adapative Processes in the Baltimore Socio-Ecological System – From the Sanitary to the Sustainable City (11/1/10-10/31/16)

A regional map showing towns, boroughs, and labeled streams, including Dayton, McDonough Borough, Villa Nova, Royal Heights, and several waterways such as Rockland Run, Paul Run, Powder Mill Run, and Walter’s Run.The third phase of the Baltimore Ecosystem Study builds on 13 years of experience in establishing a platform for integrated urban ecological and social research, education, and outreach. BES III takes advantage of the growing shift of urban areas toward sustainability policies, and the need to scientifically understand and evaluate the adaptive processes proposed to promote urban sustainability.

Funding: NSF Long–Term Ecological Research Program. Total project budget $5,640,000. Miller subcontract $30,000.

Colleen Gardina, undergraduate research assistant

Brad Borowy, undergraduate research assistant


Andrew J. Miller, subcontract with McCormick-Taylor (1/1/11-12/31/12)

Patapsco Dam Removal Sediment Study

A close view of an eroded soil bank showing a compact upper layer and a lower section where loose soil and rocks have broken away, revealing distinct layers of sediment.I am serving along with Peter Wilcock (Johns Hopkins University) and Melinda Daniels (Kansas State University) as consultant to this project which involves monitoring of sediment remobilization from the site of the Simkins Dam on the Patapsco River. The dam was removed at the end of November 2010.

Funding: American Rivers and NOAA, $11,297


Jeff Halverson

High–Impact Meteorology and Weather Hazards in the Washington–Baltimore Urban Corridor

A weather map of the northeastern United States showing color‑coded precipitation intensity for a 24‑hour period ending at 12Z, with blue, green, yellow, red, and purple areas indicating increasing rainfall amounts and a legend at the bottom displaying the precipitation scale.This is a study of lightning frequency mapped to the physiographically diverse landscape of Chesapeake Bay – urban corridor – Blue Ridge mountains, using a high resolution lightning detection and mapping system. The goal is to ascertain whether lightning intensity is related to the anthropogenic landscape, through generation of local meteorological boundaries and/or high concentration of air pollutants.

UMBC Storm Page site

Collaborators: Aaron Poyer, Ph.D candidate (Halverson)

Factors Leading to Intensity Change in Tropical Cyclones

Six satellite images arranged in two rows show a developing tropical cyclone, with color‑coded areas of convection in red, yellow, green, and blue highlighting bursts of intense activity during the onset of rapid intensification.Hurricane intensity change remains poorly forecast, compared to track and landfall location. For decades, NASA has used a combination of satellites and high altitude research aircraft to study the physics of tropical cyclones, with the goal of better understanding the genesis and rapid intensification of Atlantic basin storms. Our research examines the relationship between eye wall thunderstorms, intense lightning and the warm core of the storm’s eye.

Photo shows: Inner core structure of Hurricane Earl (2010) showing cloud top temperature (left panels), rain intensity (middle panels) and lightning strike locations (right panels).

Collaborators: Owen Kelley, faculty
Gerry Heymsfield, faculty
Scott Braun (NASA), faculty
Janel Thomas, MS Candidate (Halverson)
Alexandra St. Pe, MS Candidate (Halverson)

Heavy Precipitation and Flooding in the Appalachians Arising From Mesoscale and Synoptic Scale Storms

A shaded‑relief topographic map with green lowlands and brown higher elevations, crossed by several colored lines—pink, yellow, and blue—that mark boundaries, routes, or mapped features across the terrain.Flash floods are a leading source of mortality and property damage in the U.S. This research investigates the special vulnerability of the Appalachians to periodic floods arising from local thunderstorms, and also large-scale disturbances such as Nor’easters and post–tropical disturbances (tropical storms and hurricanes).

Photo shows: Contours of heavy rainfall mapped to steep terrain and debris flows across central Nelson County during Hurricane Camille (1969).

Collaborators: Thomas Rabenhorst, faculty

Andrew Miller, faculty

Janel Thomas, student

Alexandra St. Pe, student

Laura Merner, student

Dan Jones, student

Matthew Panunto, student

Garth Linder, student


Margaret Buck Holland

Land Tenure, Deforestation & Environmental Governance in Ecuador

Two bright tropical flowers with yellow centers and reddish‑brown outer petals sit among large green leaves, their thick petals and visible stamens giving them a waxy, vibrant appearance.This research focuses on the influence of land tenure on forest change across areas critical for ecosystem services in the Amazon. We communicate these results to improve targeting of Ecuador’s ecosystem services incentive program, SocioBosque. The next phase of this research will be to evaluate the socioeconomic impacts of SocioBosque.

Funding: Original funding for this research has been provided by: USAID’s Translinks Program, the Land Tenure Center at University of Wisconsin-Madison, and Conservation International.

Collaborators: Lisa Naughton–Treves, PhD – University of Wisconsin–Madison
Luis Suárez – Conservación Internacional, Ecuador
Free de Koning, PhD – Conservación Internacional, Ecuador
Manolo Morales – Ecolex, Ecuador
Susana Lastarria, PhD – University of Wisconsin–Madison
Brian Robinson, PhD – University of Minnesota
Kelly Wendland, PhD – University of Idaho

Legacies of the Mesoamerican Biological Corridor

A tall, solitary tree with a wide green canopy stands in an open grassy field, with smaller trees and a partly cloudy blue sky in the background.We are assessing the relative impact of trans–boundary conservation efforts related to the Mesoamerican Biological Corridor (MBC) in Central America. Our goal with this project is to identify the achievements the MBC enabled in the region related toenvironmental policy and governance from the local to regional scale.

Funding: Conservation International and UMBC’s URAS award

Collaborators: Celia Harvey, PhD – Conservation International

Lauren Kelly, IEG – World Bank

Tyler McCafferty, UMBC (URAS award recipient) (Fall 2011 – Spring 2012)

Kelley Mason, UMBC (Spring 2012)


Sandy Parker

The History and Evolution of State and Federal Parks and Forest Reserves

A map of the United States labeled “Indian Lands and Federal Reservations,” with various regions shaded in different colors to indicate the locations and extents of tribal lands and federally recognized reservations across the country.Research is focused on the evolution of public lands in the United States with particular interest in the role the federal government played in the establishment of state park and forest lands in the 20th century. In part, the research explores the tension between conservation and preservation in the early to mid 20th century.


Christopher M. Swan

Community Assembly in Riverine Networks

A shallow stream or drainage channel with scattered rocks and small pools of water runs between grassy banks, with a stone-lined edge on one side and a building and trees visible in the background.We are studying stream restoration practice as a foundation to understand how spatial position in river networks mediates the relative role of local (e.g., habitat features) and regional (e.g., dispersal) factors drive local species composition, and turnover in composition across stream reaches.

Funding: National Science Foundation, $600,000 (DEB-1026086)

Collaborators: Matthew Baker, faculty

Bryan Brown (Virginia Tech), faculty

Tara Willey, student

Socio–Economic Constraints on Community Assembly in Urban Ecosystems

A row of attached multi‑story townhouses stands behind a grassy, plant‑filled yard, with balconies, windows, and utility poles visible, creating a typical suburban or urban neighborhood scene.Traditional ecological theory cannot completely explain species coexistence in urban ecosystems. In an effort aid decision-makers in their development of sustainability plans, we are taking both survey and experimental approaches to look at the coupled ecological and socioeconomic factors that generate plant biodiversity at multiple spatial scales in Baltimore.

Funding: NSF-LTER

Collaborators: Anna Johnson, student

Local Versus Regional Constraints on Species Coexistence in Novel Habitats

A small pond with clear reflective water in the foreground and a plant‑covered section in the back sits between grassy banks, with trees and a few houses visible beyond the wetland.Management of urban stormwater detention ponds involve meeting multiple goals, including reducing runoff, attenuating stormflow, and in residential contexts, aesthetics. Since these features are rapidly replacing wetlands in the built environment, we are investigating the ecological structure and function of these novel habitats compared to their native counterparts.

Funding: NSF-LTER

Collaborators: Bryan Brown (Virginia Tech), faculty

Kate Brundrett, student


Erle Ellis

GLOBE: Evolving New Global Workflows for Land Change Science

A small pond with clear reflective water in the foreground and a plant‑covered section in the back sits between grassy banks, with trees and a few houses visible beyond the wetland.GLOBE aims to transform land change science by creating new global scientific workflows that integrate local–, regional– and global–scale researchers, expertise and data based their global relevance using an online collaboration environment leveraging social–computational algorithms and real–time quantitative global and statistical visualization.

UMBC GLOBE Project Site

Funding: NSF Grant: CNS 1125210

Collaborators: Tim Oates, faculty

Tim Finin, faculty

Wayne Lutters, faculty

Penny Rheingans, faculty

Anita Komlodi, faculty

Matt Schmill, faculty

Nick Magliocca, student

Ecosynth: 3D Ecological Mapping Using Computer Vision

A diagram showing a drone or elevated camera capturing images of a house and tree, followed by a set of overlapping photos, and finally a 3D point‑cloud model of the scene on a grid, illustrating how multiple aerial images are combined to create a 3D reconstruction.Ecosynth is a system that ecologists can use to make 3D scans of vegetation structure and potentially species at their own study sites at a relatively low cost. This approach uses computer vision software to enable personal, user–based remote measurement of ecosystems comparable to what can be accomplished with satellite or airplane based technology, but with the use of off-the-shelf digital cameras and low to high grade hobbyist remote controlled aircraft.

EcoSynth Project Site

Funding: US Forest Service

Collaborators: Marc Olano, faculty

Geoffrey Parker, faculty

Jonathan Dandois, student

Anthromes: Building a Human Framework for Ecology & Earth Science

A world map titled “Anthropogenic Biomes of the World,” with regions shaded in different colors to show how human activity shapes ecosystems, surrounded by small circular photos illustrating examples such as cities, croplands, rangelands, and wildlands.Humans have become primary global shapers of ecosystem form, process, and biodiversity, on a par with the forces of climate and geology. The Anthromes Working Group aims to investigate, understand and model human transformation and management of the terrestrial biosphere based on the concept of Anthromes (Anthropogenic Biomes) as a new paradigm for incorporating human systems into global ecology and earth science research and education for the Anthropocene.

Anthroecology Lab Site


Matthew Baker

Thresholds in Aquatic Communities in Response to Ex-Urbanization and Environmental Change

A map with branching lines resembling a river network, with regions highlighted in red and blue, accompanied by an inset line chart on the left showing multiple data series for comparison.Biotic consequences of watershed urbanization are typically assessed using space-for-time substitutions. We are building a 25-year ‘space-time stack’ of impervious surface expansion in the Baltimore-Washington metropolitan area from satellite imagery and seeking evidence of coincident chemical and biotic changes in stream monitoring data across more than 100 sampling locations.

Funding: MD SeaGrant $87,000

Collaborators: Joseph Sexton, faculty

Haley Martin, MS student

Matthew Schley, BS student

New Analytical Approaches for Detecting Community Response to Environmental Gradients

A map of Massachusetts marked with colored circles of different sizes showing percent reduction in suspended sediment yield, ranging from 0–10% in brown to 40–50% in blue, with latitude–longitude borders and a scale bar.Many anthropogenic activities that degrade aquatic communities are correlated in space and time. We are developing a multivariate approach for detecting fish community responses to stream flow alteration in Massachusetts that will help distinguish the confounding effects of impervious surface, water sourcing, and thermal gradients throughout the state.

Funding: US Geological Survey, US Environmental Protection Agency, MA Dept. Fish and Game

Collaborators: David Armstrong, faculty

The Role of Riparian Hydrology and Geomorphology in Contributing to Regional Greenhouse Gas Emissions (USDA-CSREES)

A blue three‑dimensional surface with contour lines shows a function that narrows through a thin connecting region between two wider sections, illustrating how the surface changes in height across the domain.Depending on their hydrologic dynamics, wetlands that are excellent water quality filters may also produce large amounts of greenhouse gasses. As part of understanding the biogeochemical contributions of these ecosystems across central Indiana, we are examining the effect of river valley segment sequencing on the hydroperiod of large river floodplains.

Funding: USDA-CSREES $398,000

Collaborators: Pierre Jacinthe, faculty

Philippe Vidon, faculty

Matthew Panunto, MS student

A Strategic Planning Tool For Targeted Buffer Restoration and Enhanced Riparian Stewardship

A color‑coded map labeled “Contiguously Buffered Width (m)” shows a geographic region shaded from green to red, indicating areas with low to high buffered widths, along with a scale bar and legend.Riparian buffers, forest or wetland between human activity and stream channels, can be effective at filtering upslope nutrient discharges in agricultural landscapes. We developed a new set of analytical tools that use land cover, topography, and stream maps to measure buffer width across any landscape and prioritize conservation and restoration activity.

Chesapeake Community Modeling Program

Funding: NOAA CICEET $306,000

Collaborators: Donald Weller, faculty

Thomas Jordan, faculty

Controls on Floodplain Forest Community Assembly in Lower Michigan and Maryland

A dense woodland filled with tall, slender trees rises over a floor of green grass and low vegetation, with more trees fading into the distance under soft daylight.River floodplain forests are known for their dynamic environments and diverse species assemblages. We are using novel geographic analysis, observational study, and experimental approaches to understand the role of environmental filtering and competitive dynamics across a range of hydrologic and geomorphic contexts throughout Lower Michigan and Maryland.

Collaborators: Molly Van Appledorn, PhD student