Decision analysis to evaluate control strategies for crested wheatgrass in grasslands national park of Canada
One of the most persistent threats to native grasslands worldwide is invasion by exotic species.On the North American Great Plains, land managers protecting native prairie struggle to prevent exotic invasion with limited resources for monitoring and control.On the Canadian mixedgrass prairie, crested wheatgrass ( A gropyron cristatum) is widely planted for fodder and roadside reclamation.However,it is capable of invading and forming monocultures on undisturbed native grasslands either through contagion of existing patches or long‐distance seed dispersal.Controlling this species requires thorough understanding of treatment effectiveness, rates of new patch emergence and rates of spread of existing patches (Perrings et al., 2005).Yet, quantifying these factors is difficult and they remain uncertain at large spatial and temporal scales.
decision analysis simulation modeling alien plant invasions
J.F.Wilmshurst L.Frid
Parks Canada,145 McDermot Ave.,Winnipeg,Manitoba,Canada,R3B 0R9 ESSA Technologies Ltd.,Suite 300-1765 West 8th Ave.,Vancouver,British Columbia,Canada,V6J5C6
国际会议
呼和浩特
英文
2008-06-29（万方平台首次上网日期，不代表论文的发表时间）