This article describes a method of producing accurate and relatively inexpensive maps of plant distribution, used here for mapping Arundo donax in a riparian ecosystem as part of an Extension outreach and community development effort. This produced a verifiable map of the plant's distribution over 16 km for approximately $3,000. This method had modest requirements for technical skills and equipment, and produced reference imagery that could be archived for later review. This made long-term monitoring more feasible to the community and provided Extension staff opportunities for training and public education.
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Horney, M. R., & Spiess, M. (2013). Photo-Guided Tracing: A Low-Cost Method for Monitoring Targeted Plant Species. The Journal of Extension, 51(5), Article 23. https://tigerprints.clemson.edu/joe/vol51/iss5/23