Q17. What proportion of the lands in [name of unit appeared here], if any, are affected by the following environmental impacts associated with OHV use?
i. Spread of invasive species

  None
Small (1- 9%)
Some (10- 19%)
Moderate (20- 49%)
Substantial (50-
79%)
Great (80- 89%)
Very great to all
(90- 100%)
Not applicable
(NA)
Don't know
No answer
Number of respondents
Bureau of Land Management 1.5 26.3 34.6 16.5 4.5 2.3 0.8 0.0 13.5 0.0 133
Forest Service 11.0 41.6 21.4 11.6 2.3 1.2 1.2 0.0 9.8 0.0 173
National Park Service 20.0 44.5 8.2 5.5 3.6 1.8 0.0 0.9 15.5 0.0 110
All agencies 10.3 37.5 22.1 11.5 3.4 1.7 0.7 0.2 12.5 0.0 416