Don DeAngelis is a Senior Scientist and Research Ecologist at the USGS Wetland and Aquatic Research Center.
RESEARCH
Donald DeAngelis is an ecologist, specializing in mathematical and simulation modeling. He was one of the early developers of individual-based modeling (IBM) in population ecology, and has applied IBM to fish and other populations. Among his other interests are modeling of vegetation succession, nutrient cycling, mutualistic interactions, and food webs. He is coordinator of the Across Trophic Level System Simulation (ATLSS) Program, a multi-project, multi-investigator program with the objective of providing simulation models to assist Everglades restoration.
BACKGROUND
1994-present, Ecologist, U. S. Geological Survey, Biological Resources Division, Florida Caribbean Science Center, Department of Biology, University of Miami, Coral Gables, FL 33124 Research Faculty Associate Professor, Department of Biology, University of Miami
Editor, The American Naturalist, 2004 -present
Editorial Boards
Currently: Ecological Complexity
Previously: Ecosystems, Mathematical Biosciences, Ecology, Ecological Monographs, Nonlier World, Journal of Aquatic Stress and Recovery Awards Fellow of American Association for the Advancement of Science, 1983 Martin Marietta Energy Systems, Inc. Technical Publications Award, 1986 Martin Marietta Energy Systems, Inc. Technical Publications Award, 1987 First Place, 1990 International Technical Publication Competition, sponsored by the Society for Technical Communication Martin Marietta Energy Systems, Inc., Technical Publications Award, 1991
Grants 'Spatial Gradients in Nutrient Recycling and Their Effect on Stream Ecosystem Stability'. National Science Foundation, April 1, 1991 - March 31, 1994, $1,419,019. Co-Principal Investigators, D. L. DeAngelis and P. J. Mulholland
'Compensatory Mechanisms in Fish Populations', Electric Power Research Institute. 1988 - 1996. Approximately $1 million per year. Principal Investigator, W. Van Winkle. D. L.
DeAngelis developed the approach used and wrote the initial funded proposal 'Synthesis of Species-Population Dynamics and Ecosystem Processes: Theoretical Study of the Stability and Development of Food Web Structure'. National Science Foundation, United States - Japan Cooperative Science Program. January 1, 1991 - December 31, 1992.Co-Principal Investigators, E. Teramoto and D. L. DeAngelis. Environmental Sciences Division Scientific Achievement Award for 1982 Areas of Focus Conservation and Restoration Biology Mathematical and Theoretical Biology
Education and Certifications
Ph.D., Engineering and Applied Science (Plasma Physics), Yale University, 1972
B.S., Physics, Massachusetts Institute of Technology, 1966
Science and Products
Across Trophic Level System Simulation (ATLSS) Program for the Greater Everglades
Decision Analysis to Help Improve the Effectiveness of Invasive Plants Management
Joint Ecosystem Modeling: EverSnail
Assessing the Past and Potential Future Impacts of Salt Water Intrusion on Tidal Swamp Habitat along the South Atlantic Coast
Developing the next generation of USGS resource assessments
How will Florida’s Biodiversity Respond to Climate Change?
Modeling structural mechanics of oyster reef self-organization including environmental constraints and community interactions
Carrying capacity of spatially distributed metapopulations
The ODD protocol for describing agent-based and other simulation models: A second update to improve clarity, replication, and structural realism
An overview of agent-based models in plant biology and ecology
Effect of stressors on the carrying capacity of spatially distributed metapopulations
Modeling soil porewater salinity response to drought in tidal freshwater forested wetlands
Carrying capacity of a population diffusing in a heterogeneous environment
Simulation of post-hurricane impact on invasive species with biological control management
Dispersal asymmetry in a two-patch system with source–sink populations
Asymptotic population abundance of a two-patch system with asymmetric diffusion
A generically parameterized model of lake eutrophication (GPLake) that links field-, lab- and model-based knowledge
Data for aerial dispersal of Lygodium microphyllum spores within Arthur R. Marshall Loxahatchee National Wildlife Refuge, 2003 - 2004
Modeling soil pore water salinity response to drought in tidal freshwater forested wetlands
Science and Products
- Science
Across Trophic Level System Simulation (ATLSS) Program for the Greater Everglades
Goals of the ATLSS Program are to help achieve a better understanding of components of the Everglades ecosystem, to provide an integrative tool for empirical studies, and to apply these tools to an adaptive management framework.Decision Analysis to Help Improve the Effectiveness of Invasive Plants Management
Melaleuca is an invasive tree that is highly problematic in the Everglades, threatening native wildlife and habitat. USGS is helping to improve management strategies for the invasive plant.Joint Ecosystem Modeling: EverSnail
EverSnail, developed in collaboration with the University of West Florida, is an age- and size-structured spatially-explicit landscape model of native apple snails (Pomacea paludosa).Assessing the Past and Potential Future Impacts of Salt Water Intrusion on Tidal Swamp Habitat along the South Atlantic Coast
Using historical aerial photogrammetry, satellite imagery, or recent vegetation mapping efforts, as well as various models, USGS investigates salt water intrusion impacts on coastal habitats along the southern Atlantic coast.Developing the next generation of USGS resource assessments
Resource assessments constitute a key part of the USGS mission, and represent a crucial contribution toward Department of the Interior (DOI) and broader Federal objectives. Current USGS energy and mineral assessment methods evaluate total technically recoverable resources (energy) or economically exploitable materials (minerals); the fiscal year 2010 budget for this work is $82M. To help stakeholHow will Florida’s Biodiversity Respond to Climate Change?
Florida is home to 50 endangered species, 23 National Wildlife Refuges, 9 national parks, and 119 state parks. Straddling both temperate and sub-tropical zones, the state is also unique in that it is a long and narrow peninsula, surrounded on three sides by warm water, creating a dynamic environment. The impacts of climate change, such as sea-level rise and severe storms, threaten the state’s uniq... - Publications
Filter Total Items: 173
Modeling structural mechanics of oyster reef self-organization including environmental constraints and community interactions
Self-organization is a process of establishing and reinforcing local structures through feedbacks between internal population dynamics and external factors. In reef-building systems, substrate is collectively engineered by individuals that also occupy it and compete for space. Reefs are constrained spatially by the physical environment, and by mortality, which reduces production but exposes substrCarrying capacity of spatially distributed metapopulations
Carrying capacity is a key concept in ecology. A body of theory, based on the logistic equation, has extended predictions of carrying capacity to spatially distributed, dispersing populations. However, this theory has only recently been tested empirically. The experimental results disagree with some theoretical predictions of when they are extended to a population dispersing randomly in a two-patcThe ODD protocol for describing agent-based and other simulation models: A second update to improve clarity, replication, and structural realism
The Overview, Design concepts and Details (ODD) protocol for describing Individual- and Agent-Based Models (ABMs) is now widely accepted and used to document such models in journal articles. As a standardized document for providing a consistent, logical and readable account of the structure and dynamics of ABMs, some research groups also find it useful as a workflow for model design. Even so, therAn overview of agent-based models in plant biology and ecology
Agent-based modeling (ABM) has become an established methodology in many areas of biology, ranging from the cellular to the ecological population and community levels. In plant science, two different scales have predominated in their use of ABM. One is the scale of populations and communities, through the modeling of collections of agents representing individual plants, interacting with each otherEffect of stressors on the carrying capacity of spatially distributed metapopulations
Stressors such as antibiotics, herbicides, and pollutants are becoming increasingly common in the environment. The effects of stressors on populations are typically studied in homogeneous, nonspatial settings. However, most populations in nature are spatially distributed over environmentally heterogeneous landscapes with spatially restricted dispersal. Little is known about the effects of stressorModeling soil porewater salinity response to drought in tidal freshwater forested wetlands
There is a growing concern about the adverse effects of saltwater intrusion via tidal rivers, streams and creeks into tidal freshwater forested wetlands (TFFW) due to sea‐level rise (SLR) and intense and extended drought events. However, the magnitude and duration of porewater salinity in exceedance of plant salinity stress threshold (2 practical salinity units, psu) and the controlling factors reCarrying capacity of a population diffusing in a heterogeneous environment
The carrying capacity of the environment for a population is one of the key concepts in ecology and it is incorporated in the growth term of reaction-diffusion equations describing populations in space. Analysis of reaction-diffusion models of populations in heterogeneous space have shown that, when the maximum growth rate and carrying capacity in a logistic growth function vary in space, conditioSimulation of post-hurricane impact on invasive species with biological control management
Understanding the effects of hurricanes and other large storms on ecological communities and the post-event recovery in these communities can guide management and ecosystem restoration. This is particularly important for communities impacted by invasive species, as the hurricane may affect control efforts. Here we consider the effect of a hurricane on tree communities in southern Florida that hasDispersal asymmetry in a two-patch system with source–sink populations
This paper analyzes source–sink systems with asymmetric dispersal between two patches. Complete analysis on the models demonstrates a mechanism by which the dispersal asymmetry can lead to either an increased total size of the species population in two patches, a decreased total size with persistence in the patches, or even extinction in both patches. For a large growth rate of the species in theAsymptotic population abundance of a two-patch system with asymmetric diffusion
This paper considers a two-patch system with asymmetric diffusion rates, in which exploitable resources are included. By using dynamical system theory, we exclude periodic solution in the one-patch subsystem and demonstrate its global dynamics. Then we exhibit uniform persistence of the two-patch system and demonstrate uniqueness of the positive equilibrium, which is shown to be asymptotically staA generically parameterized model of lake eutrophication (GPLake) that links field-, lab- and model-based knowledge
Worldwide, eutrophication is threatening lake ecosystems. To support lake management numerous eutrophication models have been developed. Diverse research questions in a wide range of lake ecosystems are addressed by these models. The established models are based on three key approaches: the empirical approach that employs field surveys, the theoretical approach in which models based on first princ - News
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Data for aerial dispersal of Lygodium microphyllum spores within Arthur R. Marshall Loxahatchee National Wildlife Refuge, 2003 - 2004
Old World Climbing Fern (Lygodium microphyllum (Cav.) R. Br.) is an invasive plant species threatening South Florida ecosystems. In 1989 L. microphyllum was observed in the Arthur R. Marshall Loxahatchee National Wildlife Refuge. L. microphyllum has attributes that allow it to thrive in South Florida. It produces a huge number of small spores that are easily suspended by wind and dispersed, have aModeling soil pore water salinity response to drought in tidal freshwater forested wetlands
Model generated soil pore water salinity (psu) values under scenarios of drought and normal conditions at Tidal Freshwater Forested Wetlands (TFFW) sites along the Waccamaw River and Savannah River in the Southeastern United States.