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Regional Standardization across States - PowerPoint PPT Presentation

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Dora Reader, USGS BRD Great Lakes Science Center. Steve Aichele, USGS WRD Michigan ... Eight states - Great Lakes watershed. Focus on fish (other aquatic ...

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The Great Lakes

Aquatic Gap Analysis Project


Jana Stewart

U.S. Geological Survey

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Great Lakes Aquatic Gap Project

  • Funding:

  • USGS Biological Resources Division

    • National GAP Analysis Program

  • Co-Principal Investigators:

  • Donna Myers, USGS Great Lakes Coordinator

  • Dora Reader, USGS BRD Great Lakes Science Center

  • Steve Aichele, USGS WRD Michigan District

  • James McKenna, USGS Tunnison Laboratory

  • Jana Stewart, USGS WRD Wisconsin District

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    What is “GAP”?

    • Program

      • Terrestrial (1988) - Most states in progress

      • Aquatic (1997) – Statewide projects MO and OH

    Aquatic Gap Goals

    • to map the species distributions and diversity of fish and other aquatic species and their habitats

    • Identify the gaps in conservation of these species and associated habitats

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    Great Lakes Aquatic Gap Studies

    Riverine systems

    • Eight states - Great Lakes watershed

    • Focus on fish (other aquatic biota in future)

    • Common methods and approach (MO, OH, MIFR, TNC)

    • Focus of WI project and talks today

      Coastal Pilot

    • Focus on method development for habitat classification

    • Nearshore coastal systems

    • Pilot areas – Lake Ontario and Erie

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    Regional Standardization across States

    • Valley Segment Type (VST) classification

    • National Hydrography data (NHD) – 1:100K

    • Biological coding (IT IS)

    • Organization of databases for all states and areas in the region into a single central Oracle database system.

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    Objectives: Aquatic Gap for Riverine Systems

    1) Delineate and map ecologically similar drainage areas.

    2) Classify aquatic habitats in streams using regionally consistent methods (VST).

    3) Develop aquatic biological databases at the State and regional scale.

    4) Map known and predicted occurrence and distribution of fish and other aquatic species for streams.

    5) Complete a gap analysis of fish and selected aquatic biota.

    6) Serve these data on the Internet and CD ROM.

    7) Analyze and interpret results at statewide, lakewide, and basinwide scales.

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    How does GAP work?

    • Institutional cooperation and partnerships

    • State level projects

    • Identify

      • - stakeholders and level of participation

      • - related projects to coordinate with

    • Develop products with value at the local, State, and Regional level

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    Valley Segment Types


    Stream Size




    Stream Segment Classification:

    Valley Segment Types

    Valley segments stratify a continuous stream network

    into distinct hydrogeomorphic patches

    Individual Variables

    Unique Valley Segment Types

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    Aquatic Biological Data

    needed for Target Biota

    • Location:

    • - stream name, latitude, longitude, hydrologic unit, river mile

    • Sample Information:

    • - date

    • Species Information:

    • - scientific name, common name, species ID code, count

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    How might the results be used?

    • mapping species distributions

    • identifying data gaps

    • developing biomonitoring networks

    • modeling to predict species distributions

    • developing management strategies

    • developing policy,etc.

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    Prioritize WatershedsFor Future Fish Survey Efforts

    Number of samples


    1 - 10

    11 - 67

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    Great Lakes Aquatic Gap Timeline

    Year starting