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Snapshots

  1. Cavity

    Snapshot Title: Cavity
    Taken by: Ken Tamminga

    Image: Allegheny stream #3
    Image Owner: Ken Tamminga



    Description:

    Holes in both live and dead trees provide passage to the interior of the trunk, where a myriad of critters may be found. Standing deadwood and downed snags alike offer refuge for cavity nesting specie...



  2. Wrack

    Snapshot Title: Wrack
    Taken by: Ken Tamminga

    Image: Allegheny stream #3
    Image Owner: Ken Tamminga



    Description:

    This wad of leaves and small sticks indicates the 'wrack line' of a recent high-water event. Bundles of dead leaves in the stream provide a primary food source for many detritivores, from fungus and b...



  3. hydraulic jump

    Snapshot Title: hydraulic jump
    Taken by: Ken Tamminga

    Image: Allegheny stream #3
    Image Owner: Ken Tamminga



    Description:

    Hydaulic jumps are an important part of the morphology of cold water stream habitats, helping dissipate energy, mixing nutrients and oxygen, and providing temporary cover for trout lurking in the turb...



  4. riffle

    Snapshot Title: riffle
    Taken by: Ken Tamminga

    Image: Allegheny stream #3
    Image Owner: Ken Tamminga



    Description:

    Riffles form where gravels and coarser sediments create faster flow. Elevated oxygen levels and concentration of food tidbits in the flow attract aquatic macroinvertebrates, which take cover in the cr...



  5. downed log

    Snapshot Title: downed log
    Taken by: Ken Tamminga

    Image: Allegheny stream #3
    Image Owner: Ken Tamminga



    Description:

    This log (aka 'snag' or 'course woody debris', CWD) is nicely positioned to deflect hydrologic energy toward the stream's center, thus protecting the bank, creating fast oxygenated flow, and providing...



  6. root wad

    Snapshot Title: root wad
    Taken by: Ken Tamminga

    Image: Allegheny stream #3
    Image Owner: Ken Tamminga



    Description:

    Root wad tip-ups contribute to the micro-topographic variety along the stream bank and nearby lowland forest floor, and provide structure (cover, habitat, etc.) for stream organisms.



  7. entangled roots

    Snapshot Title: entangled roots
    Taken by: Ken Tamminga

    Image: Allegheny stream #3
    Image Owner: Ken Tamminga



    Description:

    Large, resilient root masses like this protect against excessive bank erosion, trap sediment that contributes to soil development, and generally provide habitat for fauna near the stream.



  8. red-spotted newt

    Snapshot Title: red-spotted newt
    Taken by: Ken Tamminga

    Image: Allegheny stream #3
    Image Owner: Ken Tamminga



    Description:

    This is likely the same little guy as the one in stream #2 pan. Not only are they colorful and peaceful creatures but also, like other woodland salamanders and frogs, an indicator of good water qualit...