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Records with

  • Keyword = ecological modeling.
  (Sorted by Fiscal Year)
Records 1 to 25 of 91

2024
A Sample of Mathematics Used in Environmental Protection
(PRESENTATION) [Presented : Sep 23, 2023]
Challenges in environmental protection are extremely diverse with many opportunities to infuse environmental research with both new and established mathematical approaches. In this talk I will discuss three different active areas of environmental protection research and the mathe...
2023
Realism, Conservatism, and Tiered Ecological Risk Assessment.
(JOURNAL) [Published : May 27, 2022]
Recent research has provided valuable momentum for the development and use of population models for ecological risk assessment (ERA). In general, ERA proceeds along a tiered strategy, with conservative assumptions deployed at lower tiers that are relaxed at higher tiers with ever...
Evaluation of air quality modeling from EQUATES: EPA’s Air Quality Time Series Project
(PRESENTATION) [Presented : May 26, 2023]
The EPA’s Air QUAlity TimE Series Project (EQUATES) includes a set of modeled meteorology, emissions, air quality, and pollutant depositions spanning the years 2002 through 2019. Modeled datasets cover the Conterminous US with 12-km horizontal grid spacing and the Northern ...
Realism, Conservatism, and Tiered Ecological Risk Assessment
(PRESENTATION) [Presented : Nov 17, 2022]
Recent research has provided valuable momentum for the development and use of population models for ecological risk assessment (ERA). In general, ERA proceeds along a tiered strategy, with conservative assumptions deployed at lower tiers that are relaxed at higher tiers with ever...
How To Model What Matters: FEGS and The EcoService Models Library
(PRESENTATION) [Presented : Dec 15, 2022]
In an ideal world, there would be ample time and money to measure all final ecosystem goods and services (FEGS) that matter in a given scenario.  In the real world, time and money are often limited.  After using the FEGS Community Scoping Tool and the FEGS Metric report...
2022
Past, Present and Future of Seagrasses in Yaquina Bay and other West Coast Estuaries
(PRESENTATION) [Presented : Feb 03, 2022]
EPA’s Office of Research and Development facility in Newport, now called the Pacific Coastal Ecology Branch (PCEB), has been part of the Hatfield Marine Science Center campus since 1980.  A major research focus of PCEB since about 1997 has been on the distribution and ...
Simulating Metacommunities of Riverine Fishes: Trials and Tribulations
(PRESENTATION) [Presented : Nov 10, 2021]
Salmonid populations have undergone prolonged declines even amidst a plethora of conservation efforts. Inevitably, future climate and land use changes will continue to strain our ability to manage fish populations, requiring targeted approaches for conservation activities to focu...
Past, Present & Future of Seagrasses in Yaquina Bay and other Estuaries
(PRESENTATION) [Presented : Oct 21, 2021]
EPA’s Office of Research and Development facility in Newport, now called Pacific Coastal Ecology Branch (PCEB), has been part of the Hatfield Marine Science Center campus since 1980.  A major research focus of PCEB since about 1997 has been on the distribution and ecol...
Cleaning Up: Involving Community and Ecology in Remediation Projects (Wildlife Habitat Council)
(PRESENTATION) [Presented : Nov 11, 2020]
At its core, remediation efforts are designed to protect communities from the impacts of historical contamination through cleanup efforts. Land managers and agencies alike are increasingly recognizing the value of incorporating biodiversity and community considerations into both ...
2021
An Integrated Ecological Modeling System for Assessing Impacts of Multiple Stressors on Stream and Riverine Ecosystem Services Within River Basins
(JOURNAL) [Published : Jun 27, 2017]
We demonstrate a novel, spatially explicit assessment of the current condition of aquatic ecosystem services, with limited sensitivity analysis for the atmospheric contaminant mercury. The Integrated Ecological Modeling System (IEMS) forecasts water quality and quantity, habitat ...
2020
Fish modeling in river networks: a Taunton River watershed example
(PRESENTATION) [Presented : Mar 04, 2020]
Future human activities and environmental change are likely to affect riverine fish communities. Modeling can be used to assess the effects of multiple stressors on populations of fish species across a river network. We propose a modeling approach that is spatially-explicit and a...
Ecological modeling - simulating ecosystem dynamics
(PRESENTATION) [Presented : Mar 18, 2020]
The advent of mathematical models in ecology long preceded the age of computers. Ecologists used simple mathematical constructs in an effort to understand the dynamics of processes such as growth, competition, predation, and parasitism. As computers became increasingly available ...
Using metapopulation theory for practical conservation of mangrove endemic birds
(JOURNAL) [Published : Feb 01, 2020]
As a landscape becomes increasingly fragmented through habitat loss, the individual patches become smaller and more isolated and thus less likely to sustain a local population. Metapopulation theory is appropriate for analyzing fragmented landscapes because it combines empirical ...
A sensitivity analysis of pesticide concentrations in California Central Valley vernal pools
(JOURNAL) [Published : Feb 01, 2020]
Vernal pools are ephemeral wetlands that provide critical habitat to many listed species. Pesticide fate in vernal pools is poorly understood because of uncertainties in the amount of pesticide entering these ecosystems and their bioavailability throughout cycles of wet and dry p...
Simulating Rice Pesticide Runoff at Basin Level via an Integrated RICEWQ-AnnAGNPS Modeling System
(PRESENTATION) [Presented : Dec 13, 2019]
Thiobencarb is a widely applied herbicide in Northern California rice fields. The offsite movement of thiobencarb residues from upstream rice fields has potential to threaten non-targeted aquatic species living in the downstream waterbodies. Ecohydrological models are often emplo...
Intermediate-complexity models for landscape effects on fish in river networks
(PRESENTATION) [Presented : Oct 01, 2019]
Fish communities in river networks provide significant ecosystem services that will likely decline under future land use, human water demand, and climate variability. Modeling can be used to assess the consequences to multiple populations of one or more fish species from multiple...
Calibration and validation of AQUATOX model using the General Unified Threshold model of Survival (GUTS) framework
(PRESENTATION) [Presented : Oct 01, 2019]
Recently the European Food Safety Authority (EFSA) issued a scientific opinion on the state of the art of Toxicokinetic/Toxicodynamic (TK/TD) models, and specifically General Unified Threshold model of Survival (GUTS) models and their use in environmental risk assessments for pe...
PiSCES: a browser-based system for exploring lotic fish distributions and community estimation
(PRESENTATION) [Presented : Oct 05, 2019]
The Piscine Stream Community Estimation System (PiSCES) provides users with a plausible fish community for any stream reach in the conterminous United States. The web application uses information from Nature Serve, the US Geological Survey (USGS) and the Peterson Field Guide to F...
2019
The EcoService Models Library (ESML): A searchable database of ecological models for estimating the production of ecosystem goods and services
(DATA/SOFTWARE) [Published : Mar 26, 2018]
ORD has created the EcoService Models Library (ESML) to make ecological model descriptions more available and informative. EMSL is a website and database for finding, examining and comparing ecological models that may be useful for estimating ecosystem goods and services. ESML i...
A Science-Governance Partnership for Integrating Ecosystem Services into Puget Sound Restoration Planning
(PRESENTATION) [Presented : Dec 06, 2018]
Numerous studies have established that impacts from mounting population and climatic pressures are decreasing the capacity of coastal watersheds and estuaries to provide services essential to human health and well-being – clean drinking water, flood protection, habitat for ...
2018
FY 16 Output SHC 2.61 Ecosystem Goods and Services Production and Benefit Functions Case Studies Report
(PUBLISHED REPORT) [Published : Jul 15, 2018]
In the complex arena of sustainability, where the costs of failure can be high and stakeholders have multiple and sometimes conflicting interests, communities need measurement tools to characterize their current state, develop meaningful goals and quantifiable objectives for the ...
FY 17 Output SHC 2.61 Practical Strategies for Assessing Final Ecosystem Goods and Services in Community Decision Making
(PUBLISHED REPORT) [Published : Jul 15, 2018]
This SHC 2.61.1 Output report (Practical Strategies for Assessing FEGS in Community Decision Making) describes the U.S. EPA’s Office of Research and Development’s (ORD) research to incorporate the sustainability of final ecosystem goods and services (FEGS) production ...
Modeling Stream Temperatures with the Inclusion of Irradiance Change due to Forest Biomass Shifts.
(PRESENTATION) [Presented : May 14, 2018]
Changes in stream temperature are directly and indirectly due to solar energy loading levels. 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 mo...
Exploring the effects of temperature and resource limitation on mercury bioaccumulation, growth and energetics, and behavior in Fundulus heteroclitus.
(PRESENTATION) [Presented : Mar 11, 2018]
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...
Aggregate exposure pathways in support of risk assessment
(JOURNAL) [Published : Jun 01, 2018]
Over time, risk assessment has shifted from establishing relationships between exposure to a single chemical and a resulting adverse health outcome, to evaluating multiple chemicals and disease outcomes simultaneously. As a result, there is an increasing need to better understand...