An exploration of the human dimensions of riparian tamarisk control in Canyonlands National Park, Utah

Ceurvorst, Robyn; Allred, E.

Researchers investigate knowledge of tamarisk, support for its removal, norms and preferences for treatment options, and the need for more interpretation of invasive species control and ecological restoration. We examined human dimension aspects such as visitor knowledge, acceptability, and social implications of invasive alien species management in Canyonlands National Park river corridors. Tamarisk control methods applied in riparian park visitation areas support restoration of natural resource landscapes and high-quality visitor experiences. River users (n = 330) were questioned about their knowledge of tamarisk and preferences for tamarisk management on the Green and Colorado rivers within the park. We examined overall self-assessed knowledge of tamarisk, norms for different control method application options (e.g., cut-stump, tamarisk beetle, prescribed fire, mechanical), soundscape implications, and desire for increased interpretation regarding tamarisk and related management. Findings revealed (1) a lack of overall knowledge of tamarisk; (2) weak acceptability and agreement among park visitors for removal by cutting, biological defoliation, and burning; (3) variation of acceptability of and agreement with the location of a proposed application method; (4) sensitivity among respondents related to soundscape impacts on wilderness settings; (5) and a strong desire for more interpretation of tamarisk management. Many respondents stated they supported tamarisk removal for reasons that align with ecological health. A discussion of social, management, and future research implications concludes the article.

An exploration of the human dimensions of riparian tamarisk control in Canyonlands National Park, Utah

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