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2009 "Volunteers Working With Invasives"
Grants Report Form

Display Report


Project Title: Tatton Unit- Invasive Plant Early Eradication
Region: 2
Station: Aransas NWR
Contact Person:
Name and Phone Number
Darrin Welchert, 361.286.3559
Project Description:
(Up to 250 words)
The Tatton Unit, at just over 7,000 acres, is the third largest unit of the Aransas NWRC. Primary habitat types within the unit consist of salt marsh, wetland, and coastal prairie. In the past 100 years urban development has significantly reduced coastal habitats. However, invasive plants are also impacting coastal habitats at an alarming rate. Since 2002, several new species of invasive plants have been detected on the Tatton unit. This project provided substantial information on the distribution, density, and composition of the nonnative invasive plants within the Tatton Unit. It also served to control the spread and stop the loss of habitat to invasive species. Currently several invasive species (salt cedar, Johnson grass, and Chinese tallow) have been reported from the unit. In addition, several new invasive species (guinea grass and Brazilian pepper) have begun to be reported from the area. It is anticipated that this project will provide the means of early detection and eradication for these new invaders.
List of Invasives Species Targeted:Common NameScientific Name
  Angleton bluestem Dichanthium aristatum
Australian bluestem Bothriochloa bladhii
Chinese tallow Sapium sebiferum
Johnson grass Sorghum halepense
King Ranch bluestem Bothriochloa ischaemun
Project Status: Completed
Project Completion Date
or Estimated Completion Date:


Volunteer Affiliation:
(Check all that apply)
Volunteer Involvement:
Describe the type of work the volunteers performed. (Up to 150 words)
Volunteer involvement included identification of invasive species and mapping. Information was used to generate distribution maps and prioritize treatment areas.
Total Number of Volunteers: 5
Total Number of Volunteer Hours: 212
List both new and existing partnerships utilized in this project. (Up to 150 words).
Partnerships invloved people from Texas Master Naturalists, Refuge volunteers, and Goose Island State Park.


Project Results:
Give an overview of the results of the project. Include quantifiable measure of success, such as maps produced, efficacy of control measures, number of sites where invasions were detected early and responded to, number of community contacts, etc. (Up to 250 words).
During the summer and fall of 2009, the upper one-third of the Tatton unit and portions of the Aransas unit was inventoried, mapped and treated for invasive species. The dominant woody vegetation was Chinese tallow with the dominant grasses being Angleton and King Ranch bluestems. An Aerial survey to detect Chinese tallow was conducted in early November 2009 with over 20 new infestations identified. This project allowed the refuge to train 6 staff and volunteers in invasive plant identification and mapping. Staff were also trained in herbicide use and safety.
Number of Acres Treated: 70
Number of Acres Inventoried and/or Mapped: 2400
Number of Acres Restored: 50


Budget: Account for funds in broad categories such as equipment, volunteer stipends, travel, coordinator salary/contract, etc.

Total Grant Amount:

$ $15,000.00

Breakdown of Expenditures:


Total $ Spent
% of Total Grant
Equipment / Supplies $9,804.27 65.4%
Chemical $2,895.73 19.3%
Biocontrol Agents
Volunteer Stipends
Volunteer Coordinator Salary/Contract
Restoration Materials
TOTAL $15,000.00 100%

Recommendations: (OPTIONAL)
How useful was this program for meeting refuge invasive species objectives and how can it be improved?


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