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Description of Work In 2014-15 the U.S. Geological Survey and State University of New York at Fredonia characterized the quantity and morphology of floating microplastics in 29 Great Lakes tributaries in 6 states under different hydrologic conditions, wastewater effluent contributions, land uses, and seasons. Tributaries were sampled four times each, during high-flow and low-flow conditions. Samples were collected from the upper 20-30cm of the stream using a 0.33mm mesh neuston net. Microplastic particles were sorted by size, counted, and categorized as fibers/lines, pellets/beads, foams, films, and fragments. References 1. R. C. Thompson et al., Lost at Sea: Where Is All the Plastic? Science. 304, 838 (2004)....
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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 A Department of Interior team, including U.S. Geological Survey (USGS), Fish and Wildlife Service (FWS), and National Park Service (NPS), is working to determine why botulism outbreaks, which have killed large numbers of fish and fish-eating birds, are occurring in the Great Lakes. This project will determine: 1) a quick assay test for the presence of the toxin , 2) how birds are exposed to the toxins, and 3) what factors combined trigger an outbreak. This information will be used to formulate management strategies. Botulism intoxication is caused by ingestion of neurotoxins produced by the bacterium Clostridium botulinum. Periodic outbreaks of type E botulism have resulted in die-offs of fish...
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Description of Work U.S. Geological Survey (USGS) 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 on the extent and composition of coastal habitat. Low lake levels can expose fertile wetland bottomlands to invasive species such as common reed ( Phragmites). Goals & Objectives Goals: Identify current Phragmites distribution in the Great Lakes coastal zone, detect potential areas vulnerable to invasion due to influences such as altered water levels, nutrient and...
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Description of Work In collaboration with 23 local and state agencies, beach-specific models were developed at 43 beaches throughout the Great Lakes region, and data were collected at 6 more beaches for future predictive model development. A predictive modeling workshop was hosted by USGS with instructors from USGS, USEPA, and Wisconsin DNR and included training on the use of USGS-developed data aggregation tools and USEPA’s Virtual Beach. Relevance & Impact Over 56 beaches across the Great Lakes region, in addition to those currently being monitored, will be included in this effort to help meet goals for healthier beaches. Key Findings Analyses were completed for a suite of pathogens at 12 Great Lakes beaches....


    map background search result map search result map Enhance Great Lakes beach recreational water quality decision making Forecasting Potential Phragmites Coastal Invasion Corridors Microplastics in Great Lakes Tributaries Microplastics in Great Lakes Tributaries Enhance Great Lakes beach recreational water quality decision making Forecasting Potential Phragmites Coastal Invasion Corridors