Defining a regional approach for invasive plant research and management - Invasive Plants: Ecological and Agricultural Aspects - page 130

tory - includes livestock grazing allotments, sites of prescribed or natural fires,
timber harvest, fuels reduction or thinning activities, roads, and other activities
that physically disturb the soil or vegetation (Tab. 2); and 3) Proximity of cur-
rent infestations - location of known populations of P. recta mapped using
global positioning systems (GPS) tools.
The three GIS data layers were then integrated to determine the areas at risk
to P. recta invasion within SEFR (Fig. 4).
Risk assessment (e.g., Fig. 4) is a valuable tool for land managers to prior-
itize prevention, containment or control activities. For example, a land manag-
er may choose to contain exotic plant populations that are within high-risk
Figure 4. Areas at varying risk to invasion by Potentilla recta in Starkey Experimental Forest and
Range. Risk depends on the integration of habitat susceptibility, disturbance, and proximity to current
infestations.