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Description of Work Determine the relative sensitivity of two species of amphibians (i.e. Wood Frogs Rana sylvatica, Cricket Frogs Acris crepitans blanchardi, American Toad Bufo americana) to exposure to acute and chronic levels of nitrate, nitrite and ammonia. This data will be used to evaluate the current ammonia criteria and for possible inclusion in the development of criteria for nitrite and nitrate.
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Description of Work The invasive form of Phragmites australis (common reed) is a well-established pest in many parts of the Great Lakes and the Atlantic, Gulf, and Pacific coasts, including designated Areas of Concern. New innovative control options that sustainably target the competitive advantage often enjoyed by Phragmites and other invasive plants will contribute to a broad Integrated Pest Management (IPM) strategy. This project targets the microorganisms that may help Phragmites spread and will employ a molecular genetic approach to silence the genes in Phragmites that give it a competitive edge over many native plants. This project helped build and will continue to be closely aligned with the Great Lakes Phragmites...
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Description of Work This work will investigate linkages between sediment PCB concentrations and subsequent exposure in riparian organisms living on land next to the river and harbor. This is an extension of prior work at the site that has been used by the Manistique River and Harbor Remediation Team (comprised of managers and scientists from USEPA GLNPO, USEPA ORD, NOAA, USACOE, USGS and the state of Michigan) to guide plans for delisting activities. Riparian spiders are important mediators of contaminant flux from aquatic systems to nearby terrestrial habitats. Aquatic insects accumulate contaminants in their larval form, and transport these contaminants to terrestrial ecosystems in their adult bodies. Spiders...
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Description of Work U. S. Geological Survey (USGS) will identify through this project significant sources and impacts of historical and newly emerging toxics to the Great Lakes ecosystem through broad surveillance as well as laboratory and field research of tree swallows and other bird species. USGS scientists will determine the amount of exposure to and the effects of historical and emerging contaminants in Great Lakes food chains. The data will inform regulators and provide guidance on removal of Beneficial Use Impairments at Area of Concern sites around the Great Lakes. Work supported under this project is quantifying exposure to, and effects of, both historical and emerging contaminants on Great Lakes food chains...
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Description of Work U.S. Geological Survey (USGS) will expand the online availability of geospatial data to monitor the presence and extent of invasive species in wetlands, coastal areas and other sensitive habitats. USGS is working with the Great Lakes Observing System collaboration and other data sharing efforts across the Great Lakes to compile the data into a user friendly format that is accessible on line. Elevation data will be expanded in the Great Lakes Basin using a collaborative to support the GLRI. This information would support invasive species monitoring, wetland inventory, and habitat restoration. USGS will work with the Great Lakes Observing System and other data sharing efforts to make USGS geospatial...
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Description of Work The first major goal of this project is to characterize and evaluate the extent to which contaminants of emerging concern (CECs) threaten fish and other wildlife in the Great Lakes. This includes identifying and characterizing CECs in the Great Lakes Basin, identifying risk-based screening concentrations for priority CECs, evaluating population-relevant effects of complex mixtures on biota, and identifying the Great Lakes waterways at greatest risk. The second major goal of this project is to pilot and develop a short-term and an ongoing long-term state-of-the-art bioeffects surveillance program for the Great Lakes basin. This includes developing strategies which will account for variable conditions...
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Description of Work The work completed for this template will provide the following information: 1) Generate acute and chronic toxicity data for freshwater mussels and snails to enhance the protection of listed/endangered species in the GL basin; 2) Refine methods and conduct acute and chronic toxicity tests on amphibians; 3) Develop and test methods for conducting chronic toxicity tests for mayflies.
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Description of Work The Science in the Great Lakes (SiGL) Mapper is a map-based discovery tool that spatially displays basin-wide multi-disciplinary monitoring and research activities conducted by both USGS and partners from all five Great Lakes. It was designed to help Great Lakes researchers and managers strategically plan, implement, and analyze monitoring and restoration activities by providing easy access to historical and on-going project metadata while allowing them to identify gaps (spatially and topically) that have been underrepresented in previous efforts or need further study. SiGL provides a user-friendly and efficient way to explore Great Lakes projects and data through robust search options while...
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Description of Work U.S. Geological Survey (USGS) scientists will conduct fish sampling in Indiana to determine the main causes of impairment of Pigeon Creek. The U.S. Environmental Protection Agency and Indiana State agencies will use the data to evaluate ways to improve water quality. Fish assemblage data is needed to develop total maximum daily loads and implementation plans for impaired AOCs and tributaries in the Basin. Development of the TMDLs will include determining the sources of the pollutant, calculating loading allocations to ensure the designated uses will be met, and developing an implementation plan to achieve these allocations. TMDLs will address several pollutants including nutrients, sediment and...
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Description of Work U.S. Geological Survey (USGS) scientists will assess the hydrology, water quality, and response to simulated changes in phosphorus loading of the Winnebago Pool Lakes, Wisconsin. Total annual phosphorus and total suspended sediment loads will be estimated at various monitored locations throughout the Upper Fox and Wolf River Watershed using a rating curve method or GCLAS with streamflow monitored by the USGS and water quality data collected by the Wisconsin DNR. Monitoring at three new sites was done as part of this study. Data from these three sites will be used to help calibrate the SWAT model for the basin. These loads will be supplied to the Cadmus Group, Inc. to help calibrate SWAT models...
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Description of Work The GLRI Rivermouths Project (template 82) is designed to enhance our understanding of how rivermouths function at both regional and local scales by 1) developing a rivermouth classification system, based on a broad scale database covering all Great Lakes rivermouths (>2000); 2) creating a science-based understanding of how the ecological structure and function of rivermouths are linked both to the landscapes they drain and to the Lakes with which they mix; and 3) increasing the public and scientific profile of these ecosystems by connecting researchers and natural resource managers through a collaborative dialog. The long-term goal is to provide enhanced guidance for restoration and rehabilitation...
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Description of Work U.S. Geological Survey (USGS) scientists are improving the health of the Great Lakes sport and commercial fisheries by documenting sources and the determining the processes that control mercury entering food webs, and helping to evaluate the implications for public health. Our scientists will provide decision-makers with a scientific understanding of mercury-source profiles, the relative importance of the various sources, and the expected environmental responses to Great Lakes wasters and fisheries to altered mercury loading and restoration actions. This information is intended to inform and maximize the benefit of the Great Lakes restoration program. The USGS will develop mercury and methylmercury...
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Description of Work U.S. Geological Survey (USGS) will develop and provide forecasting tools for managers to determine how water withdrawals or other hydrologic or land use changes in watersheds may affect Great Lakes ecosystems. This information will help guide restoration efforts to achieve maximum effectiveness and success. Project provides unified information across the Great Lakes Basin for ecosystem restoration, assessment, and management by incorporating models that relate changes in landscape and hydrologic variables and stresses to changes in ecosystem function. The project relies upon regionally consistent hydrologic, biologic, and geospatial data to generate regionally consistent estimates, models, and...
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Description of Work This study will generate bed sediment toxicity and benthic community data needed to test two related hypotheses that address the two criteria for delisting the benthos BUI. The first hypothesis is that bed sediments at selected sample locations in the AOC (in three tributaries and in the St. Lawrence River) are no more toxic to the test species than bed sediments collected from control sites located outside (generally upstream from) the AOC. Acute (survival) and chronic (growth) whole bed-sediment toxicity tests will be conducted using the midge (Chironomus dilutus), following standard methods (USEPA 1994; USEPA 2000). The second hypothesis is that the benthic macroinvertebrate communities from...
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Description of Work USGS scientists are developing science based forecasting tools that capture changes to water flows and discharges of nutrients and sediments to the Great Lakes. The work done by this project provides managers with forecasting tools for predicting the combined effects of climate and land use changes that will help them identify and prioritize the sites best suited for restoration efforts. USGS scientists will use remote-sensing data to establish a baseline understanding of current distributions of invasive wetland plants and then forecast potential invasion corridors. Alterations to the Great Lakes shoreline or water-level patterns associated with global climate change could have significant impacts...
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Description of Work The Great Lakes ecosystem has undergone major changes over the last two decades related to the invasion of Dreissenid mussels, increased water clarity, increased benthic algae and associated water quality problems. For reasons not yet entirely understood, and that have bi-national significance, water column total phosphorus has not significantly increased over the last decade but the relative percent of the more biologically available dissolved phosphorus has increased. The filtering action of Dreissenid mussels has been shown to increase concentrations of dissolved phosphorus in the water column immediately above mussel beds and this had been hypothesized as one explanation for the increase...
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Description of Work The Great Lakes Restoration Initiative (GLRI) was established to accelerate ecosystem restoration in the Great Lakes by confronting the most serious threats to the region, such as nonpoint source pollution, toxic sediments, and invasive species. Three Priority Watersheds have been targeted by the Regional Working Group's Phosphorus Reduction Work Group (Fox/Green Bay, Saginaw, and Maumee) and are characterized by having a high density of agricultural land use and have ecosystem impairments that have been clearly identified. Within the Maumee River Priority Watersheds, monitoring is being conducted at the sub-watershed, edge-of-field, and subsurface-tile scale. The edge-of-field and subsurface-tile...
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Description of Work The Great Lakes Restoration Initiative (GLRI) was established to accelerate ecosystem restoration in the Great Lakes by confronting the most serious threats to the region, such as nonpoint source pollution, toxic sediments, and invasive species. Three Priority Watersheds have been targeted by the Regional Working Group's Phosphorus Reduction Work Group (Fox/Green Bay, Saginaw, and Maumee) and are characterized by having a high density of agricultural land use and have ecosystem impairments that have been clearly identified. Within the Fox River Priority Watershed, monitoring is being conducted at the sub-watershed and edge-of-field scale. The edge-of-field stations are targeted to those areas...
map background search result map search result map Benthic Communities and Sediment Toxicity in the St Lawrence River AOC Saginaw River Edge of Field Monitoring Maumee River Edge of Field Monitoring Watershed modeling for stream ecosystem management Lakewide Management Plan Capacity Support by U.S. Geological Survey - LAKE HURON Geospatial Information for decision support in AOCs and ecosystems Development of Watershed TMDLs in the Great Lakes Basin Mercury Cycling and Bioaccumulation in the Great Lakes Evaluation of Phosphorus Reduction - Fox River Data for Development of Watershed TMDLs in the Great Lakes Basin Birds as Indicators of Contaminant Exposure in the Great Lakes Determination of the Sensitivity of Two Species of Amphibians to Toxicity From Nitrate, Nitrite and Ammonia Toxicity Testing for Stream Dwelling Amphibians, Mussels, and Mayflies Invasive Phragmites: Prevention, Monitoring, and Control Strategies in an Integrated Pest Management Framework Forecasting Great Lakes Basin Responses to Future Change Characterizing Rivermouth Ecosystems Understanding Nutrient Loading Impacts on Lake Ontario Nearshore Waters at the Niagara River Connecting Channel Riparian Indicators of Contaminant Exposure and Potential PCB Sources at Manistique River and Harbor AOC Benthic Communities and Sediment Toxicity in the St Lawrence River AOC Maumee River Edge of Field Monitoring Geospatial Information for decision support in AOCs and ecosystems Development of Watershed TMDLs in the Great Lakes Basin Evaluation of Phosphorus Reduction - Fox River Data for Development of Watershed TMDLs in the Great Lakes Basin Forecasting Great Lakes Basin Responses to Future Change Riparian Indicators of Contaminant Exposure and Potential PCB Sources at Manistique River and Harbor AOC Saginaw River Edge of Field Monitoring Understanding Nutrient Loading Impacts on Lake Ontario Nearshore Waters at the Niagara River Connecting Channel Lakewide Management Plan Capacity Support by U.S. Geological Survey - LAKE HURON Toxicity Testing for Stream Dwelling Amphibians, Mussels, and Mayflies Mercury Cycling and Bioaccumulation in the Great Lakes Birds as Indicators of Contaminant Exposure in the Great Lakes Determination of the Sensitivity of Two Species of Amphibians to Toxicity From Nitrate, Nitrite and Ammonia Invasive Phragmites: Prevention, Monitoring, and Control Strategies in an Integrated Pest Management Framework Watershed modeling for stream ecosystem management Characterizing Rivermouth Ecosystems