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2007 "Volunteers Working With Invasives"
Grants Report Form

Display Report


Project Title: Eradication of Woody Invasive Species from an Upland Coastal Prairie
Region: 2
Station: Brazoria NWR
Contact Person:
Name and Phone Number
Thomas Adams/ (979) 292-5642
Project Description:
(Up to 250 words)
This project seeks to reverse the succession of woody invasive species from a gulf coastal upland prairie. This prairie, once dominated by diverse native grasses and forbs, has degraded over several years to the point where substantial acreage is dominated by Chinese tallow trees, eastern baccharis shrubs and McCartney Rose. Restoration required large scale herbicide application with prescribed burning.
List of Invasives Species Targeted:Common NameScientific Name
  Chinese Tallow Tree Triadica sebifera
McCartney Rose Rosa bracteata
Eastern Baccharis Baccharis halimifolia
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)
volunteers assisted in mapping of vegetation communities prior to aerial spraying of herbicide. This entailed many hours on a tractor modified with 8 foot diametere tires to traverse over wetlands as well as heavily infested shrublands. Volunteers used Trimble handheld gps units and downloaded data into an ArcGis mapping program.
Total Number of Volunteers: 3
Total Number of Volunteer Hours: 50
List both new and existing partnerships utilized in this project. (Up to 150 words).
Friends of Brazoria NWR


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).
The project site covered over 2000 acres of upland coastal prairie. but only 1200 acres were mapped prior to application of a mixture of Tordon P+D and Grazon herbicides. Mapping provided a baseline to gauge effectiveness of herbicide on target species. A rough estimate put mortality of Chinese tall trees in the ten's of thousands and McCartney Rose appears to be dying also. A section of the site was burned 6 months prior to spraying but other than opening up ground cover it didn't seem to have a collaborative affect with chemical application on martality of target species. Eastern baccharis and wax myrtle did not show adverse affects yet. This site will be prescribe burned again in 2008. Habitat restoration should be evident after the burn in spring 2009.
Number of Acres Treated: 2000
Number of Acres Inventoried and/or Mapped: 2000
Number of Acres Restored: 0


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

Total Grant Amount:

$ 13,561.00

Breakdown of Expenditures:


Total $ Spent
% of Total Grant
Equipment / Supplies
Chemical 7281.00 47
Biocontrol Agents
Volunteer Stipends 300 1
Volunteer Coordinator Salary/Contract
Restoration Materials
TOTAL 13,360.00 100

Recommendations: (OPTIONAL)
How useful was this program for meeting refuge invasive species objectives and how can it be improved?
Chinese tallow and McCartney rose showed immediated affects of mortality after herbicide application. If treated before or during flowering, the seeding stage will be terminated. Observations suggest that Chinese tallow of one foot or lower will escape herbicide drift. Therefore attention shoud be paid to low lying swales to find survivors. Baccharis didn't seem to respond to herbicide other than minor leaf browning. Other trees such as green ash and sugarberry take longer to exhibit affects.


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