Invasive Plant Science and Management (2012) 5, 178-193

Bruce D. Maxwell, Vickie Backus, Matthew G. Hohmann, Kathryn M. Irvine, Patrick Lawrence, Erik A. Lehnhoff and Lisa J. Rew (2012)
Comparison of transect-based standard and adaptive sampling methods for invasive plant species
Invasive Plant Science and Management 5 (2), 178-193
Abstract: Early detection of an invading nonindigenous plant species (NIS) may be critical for efficient and effective management. Adaptive survey sampling methods may provide unbiased sampling for best estimates of distribution of rare and spatially clustered populations of plants in the early stages of invasion. However, there are few examples of these methods being used for nonnative plant surveys in which travelling distances away from an initial or source patch, or away from a road or trail, can be time consuming due to the topography and vegetation. Nor is there guidance as to which of the many adaptive methods would be most appropriate as a basis for invasive plant mapping and subsequent management. Here we used an empirical complete census of four invader species in early to middle stages of invasion in a management area to assess the effectiveness and efficiency of three nonadaptive methods, four adaptive cluster methods, and four adaptive web sampling methods that all originated from transects. The adaptive methods generally sampled more NIS-occupied cells and patches than standard transect approaches. Sampling along roads only was time-efficient and effective, but only for species with restricted distribution along the roads. When populations were more patchy and dispersed over the landscape the adaptive cluster starting at the road generally proved to be the most time-efficient and effective NIS detection method.
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Link to article at publishers website
Database assignments for author(s): Bruce D. Maxwell, Lisa J. Rew, Erik A. Lehnhoff

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Cirsium arvense (weed)
	Bromus inermis (weed)
	Linaria dalmatica (weed)
	Hypericum perforatum (weed)