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There is an immediate need for effective and safe tools to prevent the spread of planktonic larval dreissenids (quagga Dreissena rostriformis bugensis and zebra mussels D. polymorpha) and to rehabilitate and protect native unionid habitats by controlling existing dreissenid mussel populations in and around the Great Lakes. More than half of the 78 native unionid species in Minnesota, Wisconsin, Iowa, Missouri, Illinois, Indiana, and Ohio are listed as endangered, threatened, or of special concern. Although the US Fish and Wildlife Service (USFWS) considers zebra mussels to be an immediate threat to freshwater unionids in the Upper Mississippi River System, there is no effective tool to control established zebra...
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Description of Work This work began by assembling fish toxicant data into a common database and examining the database for trends in toxicant data. The trends found in the toxicant database were linked to physiochemical properties of the individual toxicants. Combining the toxicant trends with the physiochemical properties may allow for the prediction of toxicity and the identification of chemicals with selectivity for the Asian carp. Identifying a selective toxicant may provide control of Asian carps while minimizing effects on other non-target aquatic species. When Asian carp specific toxicants are identified from the initial screen within the database these toxicants are then further screened in toxicity assays...
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Our model is a full-annual-cycle population model {hostetler2015full} that tracks groups of bat surviving through four seasons: breeding season/summer, fall migration, non-breeding/winter, and spring migration. Our state variables are groups of bats that use a specific maternity colony/breeding site and hibernaculum/non-breeding site. Bats are also accounted for by life stages (juveniles/first-year breeders versus adults) and seasonal habitats (breeding versus non-breeding) during each year, This leads to four states variable (here depicted in vector notation): the population of juveniles during the non-breeding season, the population of adults during the non-breeding season, the population of juveniles during the...
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Description of Work To achieve a better understanding of seasonal habitats and migratory behaviors of Asian carp, we will conduct studies using telemetry, sonar and conventional fish sampling to determine 1) if, when, and where Asian carp congregate, 2) habitat overlap between Asian carp and native fishes, especially native filter-feeding fishes and potential predators, and 3) the suitability of large rivers and tributaries for spawning by Asian carp. We will also assess feeding behaviors by sampling food particles from areas with telemetry-tagged fish, at random sites and in Asian carp stomachs. Food from these sources will be characterized with a particle analyzer, genetics and microscopy to determine preferences...
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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 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 Hydroacoustic surveys were used to characterize the distribution of fish within the backwater before, during and after the addition of algal feeding attractants, establishment of a water gun barrier and commercial fishing activities. Algal feeding attractants were injected at predetermined locations in the backwater to attract and concentrate Asian carp in the closed portion of the backwater. Nine days after the first algal feeding attractant was added, a water gun barrier was established at the narrowest location on the backwater. The water gun barrier was established about 14 hours before commercial fishers began 3 consecutive days of carp removal; the water gun barrier operated continuously...
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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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Technology doesn’t stand still and neither does the vegetation mapping program. With 9X9 film and film cameras becoming increasingly rare, the 2010 systemic aerial photo effort will use a digital mapping camera to collect 8”/pixel imagery above Lock & Dam (L&D) 13 and 16”/pixel imagery below L&D 13 and along the Illinois River floodplain. There are two main reasons for this distinction; 1) the floodplain above L&D 13 is narrower and contains a greater amount and diversity of aquatic vegetation, and 2) below L&D 13, the Upper Mississippi River is largely channelized, with less aquatic vegetation, and wider, leveed floodplains dominated by agricultural use. This holds true for much of the Illinois River as well...
Categories: Project; Types: Collection
In the late 1880's and early 1900's the Mississippi River Commission (MRC) conducted an extensive high-resolution survey of the Mississippi River from Cairo, Illinois to Minneapolis, Minnesota. These data were published as a series of 89 survey maps and index. Other data on the maps that were not automated include; elevation contours, water depth soundings, proposed water control structures (e.g., wing dams), levees, benchmarks, railroads, and city streets. However, this information is available since these maps were scanned, georeferenced, and mosaicked by pool and are served on the Center’s web site. In addition to the mosaics, in the 1990's, the Upper Midwest Environmental Sciences Center (UMESC) in conjunction...
Categories: Project; Types: Collection
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Description of Work Water guns are being placed in backwater habitats where bighead carp and silver carp currently are to see if they can be used to deny fish access to these preferred off-channel habitats or trap them in areas where they can be captured and removed. The energy emitted from water guns is being measured to determine the risk associated with water gun operation near navigation structures. These research topics are being investigated under laboratory (USGS Upper Midwest Environmental Sciences Center, La Crosse, WI) and field conditions (for example, a backwater area of the Illinois River near Morris, IL). Relevance & Impact If water guns alter the behavior of bighead carp or silver carp then they...
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Description of Work Studies assessing seasonal and spatial changes in digestive enzymes and gill raker morphology in bigheaded carps and native planktivorous fishes have been completed. Results indicate that bigheaded carps feed earlier in the year than native filter-feeding fishes and that certain digestive enzymes present in bigheaded carps are either not present in some native fishes or are much less active in the native species than in bigheaded carps. Results also indicate that the gill raker morphology of bigheaded carps is relatively constant with minimal seasonally or spatially relevant changes unlike that of the native gizzard shad (Dorosoma cepedianum) which had both seasonal and spatially correlated changes...
    map background search result map search result map Birds as Indicators of Contaminant Exposure in the Great Lakes Characterizing Rivermouth Ecosystems 1890's Mississippi River Commission Surveys Land Cover Data: Mississippi River 2010 Upper Mississippi River Restoration (UMRR) Program Land Cover Data: Mississippi & Illinois Rivers Indiana Bat Project data 2010 Upper Mississippi River Restoration (UMRR) Program Land Cover Data: Mississippi & Illinois Rivers 1890's Mississippi River Commission Surveys Land Cover Data: Mississippi River Birds as Indicators of Contaminant Exposure in the Great Lakes Characterizing Rivermouth Ecosystems Indiana Bat Project data