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Snapshots

  1. Nascent focus of buffelgrass

    Snapshot Title: Nascent focus of buffelgrass
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    Nascent foci are small, remote patches from which invasive spread occurs most quickly. Associated with long-distance dispersal, this patch can serve as a seed source for new propagules far beyond the ...



  2. House in buffelgrass

    Snapshot Title: House in buffelgrass
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    Buffelgrass grows right up to the house on all four sides. Although the infestations arae not dense enough yet to carry a fire, these patches are likely to coalesce as well as merge with nearby patch...



  3. House surrounded by byffelgrass

    Snapshot Title: House surrounded by byffelgrass
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    Yes, this house has buffelgrass within 100m on all 4 sides.



  4. House above buffelgrass

    Snapshot Title: House above buffelgrass
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    This house is uphill from a coalescing patch of buffelgrass.



  5. Port-a-potty

    Snapshot Title: Port-a-potty
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    How many port-a-potties can you find in this picture?



  6. Aspen Fire Boundary

    Snapshot Title: Aspen Fire Boundary
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    The Aspen Fire, which burned in 2003, consumed mid-elevation fuels due to the abundance of the invasive grass Lehman lovegrass, which grows in dense monocultures down to around 4000 feet elevation. Yo...



  7. Densely infested rocky slope near Swan and Ina

    Snapshot Title: Densely infested rocky slope near Swan and Ina
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    This rocky piedmont is densely infested with buffelgrass and will likely serve as a seed source for new infestations in Finger Rock Canyon.



  8. Well established buffelgrass patch upslope from development

    Snapshot Title: Well established buffelgrass patch upslope from development
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    This infestation of buffelgrass is about 200 meters upslope from this housing fevelopment Managers worry that this grass will not only fill in across the front range of the Catalinas and Rincons, but...



  9. Buffelgrass inside Ventana Canyon

    Snapshot Title: Buffelgrass inside Ventana Canyon
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    Small and medium-sized patches are common within the narrow confines of Ventana Canyon. This patch, which stands out from the native vegetation by its golden yellow hue, is a very small patch numberin...



  10. Small buffelgrass patch

    Snapshot Title: Small buffelgrass patch
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    This small buffelgrass patch is one of few in a large area and will likely serve as the locus of spread into the surrounding region. Remote infestations are particularly problematic because their prop...



  11. Aspen Fire boundary

    Snapshot Title: Aspen Fire boundary
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    The extents of the Aspen Fire in 2003 are clearly delineated here. On the left (upslope), the landscape is homogeneous grassland with some shrubs (probably mesquite). On the lower right side of the im...



  12. Buffelgrass infestations often start at the base of cliff-faces

    Snapshot Title: Buffelgrass infestations often start at the base of cliff-faces
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    Possibly due to increased soil moisture, buffelgrass often colonizes the areas below south-facing cliff faces and spread across-slope and down-slope from there.



  13. Tanglehead patch

    Snapshot Title: Tanglehead patch
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    The rust-colored patches in this snapshot are small patches of Heteropogon contortus, or tanglehead. Tanglehead is a native C4 perennial grass common to the Arizona Upland.



  14. Small buffelgrass infestation

    Snapshot Title: Small buffelgrass infestation
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    Small buffelgrass infestation



  15. Small patch of buffelgrass above Ventana Canyon Resort

    Snapshot Title: Small patch of buffelgrass above Ventana Canyon Resort
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    This is one of several patches just upslope from Ventana Canyon Resort. The invasive grass shines golden in the fall.



  16. Ventana Canyon Resort

    Snapshot Title: Ventana Canyon Resort
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    The hills around Ventana Canyon resort are infested with small patches of buffelgrass



  17. Dense patch of buffelgrass, November 2008

    Snapshot Title: Dense patch of buffelgrass, November 2008
    Taken by: Aaryn Olsson

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    Compare to November 2007: picasaweb.google.com/aaryno/BuffelgrassAtVentanaCanyon#5133087524308049890 Will open in a new tab or window



  18. Bufflegrass patch

    Snapshot Title: Bufflegrass patch
    Taken by: Mary Nichols

    Image: SantaCatalinaMountains4
    Image Owner: Mary Nichols



    Description:

    Invasive grass that can be identified by its unique color during the fall season.