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Down in the Weeds

Submitted by May 3, 2016 12:10 pm

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Spring is here, migrating birds are back, butterflies are out and about, flowers are in bloom, a lot is going on. To most this is an exciting time to be outside and explore our natural gems, for Prescott Creeks staff and volunteers it is also time to roll up our sleeves and engage in management of invasive plants around The upper Granite Creek Watershed.

Invasive and noxious plants are a major threat across the state of Arizona. They recognize no borders and occur across all land ownerships. Invasive and noxious plants change, disrupt and degrade natural systems and their associated biological processes. Local examples include:

  • change of the natural fire regime,
  • physical & chemical alternation of ecosystems,
  • out-compete native vegetation and crops,
  • and can destroy the natural beauty of the Arizona landscape.
Steve Dewey, Utah State University, Bugwood.org
Steve Dewey, Utah State University, Bugwood.org

Invasive plants have become established in riparian forest areas of Granite Creek and its tributaries, from the headwaters in Prescott National Forest downstream to the myriad of private, tribal and municipal owned properties.  Noxious weeds including state priority species such as Scotch thistle, Spotted knapweed and Dalmatian toadflax have found a convenient mode of dispersal in our streams where they establish in riparian areas and expand outward to upland forest.

Dalmatian Toadflax (linaria dalmatica)
Dalmatian Toadflax (linaria dalmatica)
Spotted Knapweed (Centaurea maculosa)
Spotted Knapweed (Centaurea maculosa)

 

 

 

 

 

 

 

 

 

 

Common teasel (Dipsacus fullonum)
Common teasel (Dipsacus fullonum)
Scotch Thistle (Onopordum acanthium)
Scotch Thistle (Onopordum acanthium)

 

 

 

 

 

 

 

 

 

 

To address the widespread infestation, Prescott Creeks coordinates a comprehensive approach with private landowners and regional partners to control invasive weeds in our forested riparian areas. The noxious weeds of AZ require diligent control efforts for years to exhaust the invasive seed bank and restore native vegetation. To support and fund such a long term (at times never ending) efforts Prescott Creeks and their partners rely on diverse network of support such as:

  • Government agencies (federal and state) provide resources and guidelines. Currently The AZ State Forestry  Department is funding a Watershed Invasive Weed Control Project, led by Prescott Creeks.AFD_Logo_Full_Color_small_1 For more information about this grant program CLICK HERE
  • Local community entities include the businesses, other non profits organizations, and most important are the public. The most effective management of invasive is  in the hands of the people who help prevent, control and eradicate invasive in their communities.

There are three main ways Prescott Creeks plans to ensure our management efforts will remain effective for years to come:

  • Monitoring

    Post Treatment Monitoring
    Volunteers conducting Post Treatment Monitoring
  • Control and eradication on priority sites throughout the watershed
    Establishing native grasses to out compete the invasive plants
    Yavapai Exceptional Industry help establishing native grasses to out compete the invasive plants

    IMG_8923 (Large)
    Volunteer help eradicating Scotch Thistle infestation
  • and education.

    Tri City Prep High school students on a field day learning about invasive ecology & management.
    Tri City Prep High school students on a field day learning about invasive’s ecology & management.

 

If you find this topic and work interesting and would like to take action and support our work you are more then welcome to either DONATE and/or VOLUNTEER with us.

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