Harwell Gentile
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Distinguished Professor of Environmental Sciences,
Environmental Sciences Institute and Environmental
Sciences Cooperative Center, Florida A&M
University. Research intoecological risk assessment,
ecosystem management, ecological modeling, and
environmental policy issues. Management of research
projects, staff, and funds.
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Society of Environmental Toxicology and Chemistry
Ecological Society of America
Society for Environmental Management
Society for Risk Analysis
Limnology Society of America
Man and the Biosphere - Human Dominated Systems Directorate
Biography
Dr. Gentile is an ecologist whose primary interest is the design and
implementation of watershed and regional-scale integrated risk
assessments and the use of this information in ecosystem
management and policy decisions. Dr Gentile held several
positions with the U.S. Environmental Protection Agency where
he directed programs in: marine ecotoxicology: ocean disposal of
hazardous wastes; marine water quality criteria, and the disposal
of dredged materials. He was Senior Science Coordinator for
EPA/ORD’s Risk Assessment Forum where his primary
responsibility was the development of EPA’s Framework for
Ecological Risk.
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Higher Education
Ph.D. Ecology, University of New Hampshire
M.A. Ecology, University of New Hampshire
B.A Biology/Chemistry, Northeastern University
Employment History
1997-Present Harwell Gentile & Associates, LC (Principal)
2002-2004t Woods Hole Group, Inc (Consultant)
2001-2005 Florida A&M University (Adjunct Professor)
1995-2002 University of Miami, Rosenstiel School of Marine
And Atmospheric Sciences (Senior Scientist)
1990-1995 U. S Environmental Protection Agency, Senior
Scientist, Risk Assessment Forum, D.C.
1988-1990 Woods Hole Oceanographic Institution (Visiting
Scientist)
1981-1987 U. S Environmental Protection Agency, Technical Director, EPA/COE Field
Verification Program
1977-1981 U. S Environmental Protection Agency, Chief,
Environmental Toxicology Branch
1966-1977 U. S Environmental Protection Agency, Aquatic
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Coeur d’Alene Superfund Site: Mining operations over the last century have left over 10,000
square miles of heavy metal contamination in the Coeur d’Alene basin. In order to characterize
the magnitude and extent of contamination and risk, a risk-based framework was used to divide
the area into sub-units and to identify remedial source and ecological goals. Conceptual models
were developed for each sub-unit and for rivers within those units to identify the primary sources
of contamination and to allocate resources. This study involved EPA, NOAA, the Coeur
d’Alene Tribal Nation, and the Department of Justice. My role in this study was to conduct a
series (10) of workshops that resulted in setting goals for each sub-unit and developing
conceptual models to support remediation efforts.
Assessing the Ecological Significance of Residual Exxon-Valdez Oil: The Exxon Valdez oil
spill occurred on 24 March 1989, with more than 250,000 barrels (i.e., over 1 x 107
gallons or 4.2
x 107
liters) of Alaska North Slope crude oil released into northeastern PWS (cf., Galt et al.
1991; NOAA 1992; Stoker et al. 1992; US Coast Guard 1993; Wolfe et al. 1994; Page et al.
1995; Wells et al. 1995; Spies et al. 1996). Fifteen years after the spill the seminal question is
whether there is a significant risk or threat to biota from the residual Exxon-Valdez oil. Our
study involved expanding on the US EPA ecological risk assessment framework by applying
criteria for evaluating the ecological significance of effects. This was done by adding a
framework for assessing the ecological significance of the exposure regime, and use this ....
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Dr. Mark A. Harwell CV
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Dr. Harwell is an ecosystems ecologist with expertise in ecological risk assessments and ecosystem management.
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Areas of activity:
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— ecological risk assessment; ecosystem management; conceptual modeling; environmental decision-making; environmental consequences of global climate change; human-environmental interactions; ecological modeling
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mharwell@ecologicalrisk.com
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Dr. John H. (Jack) Gentile CV
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Dr. Gentile is an ecologist whose primary interest is the design and implementation of watershed and regional-scale integrated risk assessments and the use of this information in ecosystem management and policy decisions.
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Areas of activity:
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— ecological risk assessments, ecotoxicology; conceptual modeling; environmental decision-making; human-environmental interactions; facilitation of science in support of decision-making
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jgentile@ecologicalrisk.com
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Affiliates
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Dr. Jerald S. (Jerry) Ault CV
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— population dynamics; fisheries ecology; ecological modeling; coupling of physical and biological systems; statistical analyses; ecological risk assessments
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jault@rsmas.miami.edu
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Dr. Wendell P. Cropper. Jr. CV
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— mechanistic simulation modeling at multiple scales; analysis of ecosystem productivity and growth; applications of biologically inspired computing (genetic algorithms and artificial neural networks)
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wcropper@ufl.edu
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Dr. Kenneth W. (Ken) Cummins CV
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— a stream and watershed ecology; aquatic ecosystem processes with emphasis on freshwaterinvertebrates.
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kwc7002@humboldt.edu
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Dr. Wenrui Huang CV
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— 3D Coastal and estuarine environmental modeling (surface hydrodynamic, sediment, and water quality modeling); neural network applications in hydrological and environmental forecasting (river flow, water levels, salinity, etc.); computational fluid dynamics and model development.
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whuang@eng.fsu.edu
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Dr. David (Dave) Letson CV
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— Dr. Letson’s research focuses on natural resource economics, with particular emphasis on the economics of extreme weather and climate variations
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dletson@rsmas.miami.edu
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Dr. Diego Lirman CV
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— coral reef ecology and biology; ecological modeling; seagrass and macroalgal ecosystems; ecological consequences of tropical storms and hurricanes; ecological risk assessments
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dlirman@rsmas.miami.edu
Dr. Michael A. (Mike) Reiter CV
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— conceptual models and integrated assessment strategies for natural resource management, stakeholder-based methodologies; development of multidisciplinary and interdisciplinary courses and programs with a focus on environmental issues; design, syllabi, workshops.
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mreiter@desu.edu
Dr. John Schalles CV
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— aquatic science, with an emphasis on biological production, biogeochemistry, and remote sensing of shallow systems (lakes, wetlands, estuaries, reefs, and near shore); hyperspectral imagery acquisition and geospatial analysis of coastal habitats (salt marshes, submerged aquatic vegetion, and open water); vegetation community structure, productivity, hydrology, and biogeochemistry of depressional wetlands; hydrologic optics and remote estimation of phytoplankton chlorophyll and accessory pigments
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jfsaqua@creighton.edu
Dr. Michael Thomas CV
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— resource and environmental economics; assessing the economic value of boating access in Florida and modeling the optimal placement of future boating access facilities; economic value of improved hurricane forecasting; economic impacts of the invasive pest, tropical soda apple, on the Florida cattle industry; assurance bonding as a tool to manage risks associated with intentionally releasing exotic species; economic loss modeling from environmental damage of the 1993 Tampa Bay Oil spill; modeling the economic impact and value lost to recreational boaters resulting from manatee speed zones in Florida.
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michaelthomas@nettally.com
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Dr. Hongqing Wang CV
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— hydrodynamic and water quality modeling; spatially-explicit process-based ecosystem & biogeochemical modeling; Land use/land cover mapping/modeling/change detection; and application of GIS, remote sensing and GPS in ecosystem studies.
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hxw7894@louisiana.edu
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Dr. Anthony D. (Tony) Wilbon CV
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— strategic management of science and technology; planning and management of science resources, with particular emphasis in areas of socioeconomic aspects of ecological and environmental science; teaching and consulting capabilities extend to technology and business related topics including management science, research methodology and design (qualitative and quantitative techniques), information systems application and technology, production and operations management, and business strategy in technology/science environments.
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adwilbon@hotmail.com
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Dr. Dreamal Worthen CV
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— interdisciplinary agricultural and rural research focusing on environmental justice, the elderly, poverty and health issues in rural communities of color; research looking at how social decisions and responses impact the environment.
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dreamal.worthen@famu.edu
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HGA, LC 2006-2007
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Prince William Sound
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Fire Island - Montauk Point
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Florida Department of Environmental Protection
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Coeur d'Alene River Basin
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ORIMULSION™ Comparative Risk Assessment
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Biscayne Bay
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South Florida/CERP
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Apalachicola Bay
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To request reprints or more information from these projects, please send email to: info@ecologicalrisk.com.
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Prince William Sound - Exxon Valdez
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A project presently underway by Harwell Gentile and Associates, LC, for the ExxonMobil Corporation is addressing the issue of the ecological significance of any residual effects from the Exxon Valdez oil spill (EVOS) on Prince William Sound (PWS), Alaska.
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The Exxon Valdez oil spill occurred on 24 March 1989, with more than 250,000 barrels of Alaska North Slope crude oil released into northeastern Prince William Sound. Within two days winds in excess of 70 mph drove much of the surfaced oil to the southwest, forming mousse, a water-in-oil emulsion that affected the fate-and-transport and exposures of the spilled oil. About half of the spilled oil landed on the shoreline or the intertidal zone of the Alaskan coast, so that almost 500 miles of Prince William Sound (about 16% of the shoreline) and over 800 miles of the Gulf of Alaska (about 14% of the shoreline) were oiled to some degree. Because Prince William Sound is such a highly dynamic system, with extreme winter storms and wave/tidal action, most of the beached oil dispersed back into the ocean within three years after the spill, and only 2% of the volume of oil spilled remained on Prince William Sound beaches by the end of 1992.
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Biological effects from the spill resulted from both toxicological responses from the chemicals in the oil (particularly PAHs) and physical oiling which caused smothering and hyperthermia. Especially visible was the significant loss of seabirds from oiling, with estimates of over 375,000 seabirds being killed. However, although the PAHs were readily detectable in the water, their concentrations were well below acute toxicity levels for marine animals, even right after the spill. In addition to the stressors from the crude oil itself, a massive clean-up operation was undertaken after the spill throughout the summers of 1989-91, and more than 11,000 people and 1100 boats cleaned over 1000 miles of shorelines and intertidal areas of the Sound and Gulf using high-pressure and/or high-temperature water removal, surfactants, and manual physical removal of oil. There was clear evidence that in many cases the clean-up efforts constituted a more significant stressor to shoreline and intertidal biota than the physical and toxicological stressors from the spill. For example, some of the intertidal cleaning essentially removed all of the macroalgal community from rocky surfaces, extending the time to recovery of those areas by about two years.
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gulf of mexico
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http://www.harteresearchinstitute.org/newsletter/spring2011/docs/gom_report_card_initiative.pdf
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http://www.harteresearchinstitute.org/newsletter/spring2011/docs/gom_report_card_initiative.pdf
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cape cod, hamock fl 2 tx a&m guys may 2011
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