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Records with

  • Keyword = ecological modeling.
  (Sorted by Fiscal Year)
Records 26 to 50 of 91

2018
Exploring the effects of temperature and resource limitation on mercury bioaccumulation, growth and energetics, and behavior in Fundulus heteroclitus
(PRESENTATION) [Presented : Nov 12, 2017]
Aquatic ecosystems are affected by changes in both temperature and resource availability. While higher temperatures may result in increased food consumption and increased mercury (Hg) accumulation, they may also increase growth and reduce Hg tissue concentration through somatic d...
Ecological Models to Predict and Test the Effects of Chemical Stressors: Integration across 2 EPA STAR cooperative agreements
(PRESENTATION) [Presented : Nov 12, 2017]
Accessible tools to quantify adverse outcomes pathways (AOPs) that can predict the ecological effects of chemicals and other stressors are a major goal of Chemical Safety and Sustainability research within US EPA’s Office of Research and Development. To address this goal, w...
National and Regional FEGS Metrics and Indicators 2016 Workshop Report
(PUBLISHED REPORT) [Published : Jun 30, 2017]
Final ecosystem goods and services (FEGS) are the features of ecosystems directly valued by people. Metrics and indicators that describe the state of FEGS to non-experts and beneficiaries with salience and meaning facilitate effective communication and social analysis. This rep...
2017
Developing qualitative ecosystem service relationships with the Driver-Pressure-State-Impact-Response framework: A case study on Cape Cod, Massachusetts
(JOURNAL) [Published : Jan 01, 2018]
Understanding the effects of environmental management strategies on society and the environment is critical for evaluating their effectiveness but is often impeded by limited data availability. In this article, we present a method that can help scientists to support environmental...
Modeling the impact of forest biomass change on the subsequent ground level solar energy to enhance the understanding of ecosystem service tradeoffs
(PRESENTATION) [Presented : Aug 11, 2017]
Background/Question/Methods Solar radiation is a significant environmental driver that impacts the quality and resilience of terrestrial and aquatic habitats, yet its spatiotemporal variations are complicated to model accurately at high resolution over large, complex watersheds. ...
Exploring the effects of temperature and resource limitation on mercury bioaccumulation in Fundulus heteroclitus using dynamic energy budget modeling and behavioral assessment
(PRESENTATION) [Presented : Jul 16, 2017]
Global climate change is likely to affect both temperature and resource availability in aquatic ecosystems. While higher temperatures may result in increased food consumption and increased mercury accumulation, they may also lead to increased growth and reduced mercury accumulati...
2016
Dynamic Shade and Irradiance Simulation of Aquatic Landscapes and Watersheds
(PRESENTATION) [Presented : Apr 08, 2016]
Penumbra is a landscape shade and irradiance simulation model that simulates how solar energy spatially and temporally interacts within dynamic ecosystems such as riparian zones, forests, and other terrain that cast topological shadows. Direct and indirect solar energy accumulate...
Progress and Challenges in Coupled Hydrodynamic-Ecological Estuarine Modeling
(JOURNAL) [Published : Mar 30, 2016]
Numerical modeling has emerged over the last several decades as a widely accepted tool for investigations in environmental sciences. In estuarine research, hydrodynamic and ecological models have moved along parallel tracks with regard to complexity, refinement, computational po...
Exploring the effects of temperature and resource limitation on mercury bioaccumulation in Fundulus heteroclitus using dynamic energy budget modeling
(PRESENTATION) [Presented : Mar 29, 2016]
Dynamic energy budget (DEB) theory provides a generalizable and broadly applicable framework to connect sublethal toxic effects on individuals to changes in population survival and growth. To explore this approach, we conducted growth and bioaccumulation studies that contribute t...
The Geobiosphere Emergy Baseline: A synthesis
(PRESENTATION) [Presented : Jan 19, 2016]
Following the Eighth Biennial Emergy Conference (January, 2014), the need for revisiting the procedures and assumptions used to compute the Geobiosphere Emergy Baseline (GEB) emerged as a necessity to strengthen the method of Emergy Accounting and remove sources of ambiguity and ...
Development of a dynamic energy budget modeling approach to investigate the effects of temperature and resource limitation on mercury bioaccumulation in Fundulus heteroclitus.
(PRESENTATION) [Presented : Nov 12, 2015]
Dynamic energy budget (DEB) theory provides a generalizable and broadly applicable framework to connect sublethal toxic effects on individuals to changes in population survival and growth. To explore this approach, we are developing growth and bioaccumulation studies that contrib...
Development of a dynamic energy budget modeling approach to investigate the effects of temperature and resource limitation on mercury bioaccumulation in Fundulus heteroclitus-presentation
(PRESENTATION) [Presented : Nov 05, 2015]
Dynamic energy budget (DEB) theory provides a generalizable and broadly applicable framework to connect sublethal toxic effects on individuals to changes in population survival and growth. To explore this approach, we are conducting growth and bioaccumulation studies that contrib...
2015
Computational Ecology and Open Science: Tools to Help Manage Lakes for Cyanobacteria in Lakes
(JOURNAL) [Published : Sep 15, 2015]
Computational ecology is an interdisciplinary field that takes advantage of modern computation abilities to expand our ecological understanding. As computational ecologists, we use large data sets, which often cover large spatial extents, and advanced statistical/mathematical co...
Can longer forest harvest intervals increase summer streamflow for salmon recovery?
(PRESENTATION) [Presented : May 29, 2015]
The Mashel Streamflow Modeling Project in the Mashel River Basin, Washington, is using a watershed-scale ecohydrological model to assess whether longer forest harvest intervals can remediate summer low flow conditions that have contributed to sharply reduced runs of spawning Chin...
Enhancing VELMA's Watershed Delineation and Performance with Ancillary Stream Data
(PRESENTATION) [Presented : Apr 28, 2015]
VELMA (Visualizing Ecosystems for Land Management Assessment) is a hydro-ecological landscape disturbance model developed to predict the effectiveness of alternative green infrastructure scenarios for protecting water quality, and also to estimate potential ecosystem service co-b...
Modeling ecosystem service tradeoffs for alternative land use and climate scenarios
(PRESENTATION) [Presented : Dec 12, 2014]
Scientists, policymakers, community planners and others have discussed ecosystem services for decades, however, society is still in the early stages of developing methodologies to quantify and value the goods and services that ecosystems provide. Essential to this goal are highly...
Research questions to identify ecological inicators most useful for linking ecosystems and human well-being
(PRESENTATION) [Presented : Dec 12, 2014]
The identification of ecological indicators effectively connecting ecosystems to social science interpretation would facilitate analyses important to public deliberation. However, guidelines for developing meeting this need are not well developed. In the past few years, economist...
2014
Research Questions to Identify Ecological Indicators Most Useful for Linking Ecosystems and Human Wellbeing
(PRESENTATION) [Presented : Aug 15, 2014]
Background/Question/Methods While the desirability of ecological indicators that foster social science interpretation and use as well as public comprehension is well established, guidelines for developing indicators that meet these needs are not as well developed. In the past f...
When Green Goes Bad: An interdisciplinary approach to better understand cyanobacteria, nutrients, and lakes
(PRESENTATION) [Presented : Jun 18, 2014]
The current connotation within the environmental protection arena is that "Green is Good." While that is very often true, in the case of lakes and ponds when they suddenly go green, it is most likely the result of an algae bloom. These blooms increasingly contain many harmful s...
Assessing Lost Ecosystem Service Benefits Due to Mining-Induced Stream Degradation in the Appalachian Region: Economic Approaches to Valuing Recreational Fishing Impacts
(PRESENTATION) [Presented : Jun 03, 2014]
Sport fishing is a popular activity for Appalachian residents and visitors. The region’s coldwater streams support a strong regional outdoor tourism industry. We examined the influence of surface coal mining, in the context of other stressors, on freshwater sport fishing in...
Quantifying ecosystem service tradeoffs in response to alternative land use and climate scenarios: Pacific Northwest applications of the VELMA ecohydrological model
(PRESENTATION) [Presented : May 02, 2014]
Scientists, policymakers, community planners and others have discussed ecosystem services for decades, however, society is still in the early stages of developing methodologies to quantify and value the goods and services that ecosystems provide. Essential to this goal are highl...
Basin-wide Assessment of Climate Change Impacts on Ecosystems and Biodiversity
(PRESENTATION) [Presented : Mar 28, 2014]
Mekong ecosystems are under pressure from a number of "drivers", including rapid economic development, population growth, unsustainable resource use, and climate change. Ecological modeling can help assess vulnerability and impacts of these drivers on the Lower Mekong Basin.
ECOHAB - HYDROGRAPHY AND BIOLOGY TO PROVIDE INFORMATION FOR THE CONSTRUCTION OF A MODEL TO PREDICT THE INITIATION, MAINTANENCE AND DISPERSAL OF RED TIDE ON THE WEST COAST OF FLORIDA
[Published : Sep 30, 2003]
This program is part of a larger program called ECOHAB: Florida that includes this study as well as physical oceanography, circulation patterns, and shelf scale modeling for predicting the occurrence and transport of Karenia brevis (=Gymnodinium breve) red tides. The physical par...
Effects of stream topology on ecological community results from neutral models
(JOURNAL) [Published : Feb 28, 2012]
While neutral theory and models have stimulated considerable literature, less well investigated is the effect of topology on neutral metacommunity model simulations. We implemented a neutral metacommunity model using two different stream network topologies, a widely branched netw...
Wetlands: Earth's Kidneys
(JOURNAL) [Published : Dec 05, 2013]
Wetlands are unique, diverse, and productive habitats that emerge at the fringe of aquatic and upland land systems. The U.S. Environmental Protection Agency (EPA) defines wetlands as "areas that are regularly inundated by surface water or groundwater and characterized by a preva...