Journal article

Practicable methods for delimiting a plant invasion

Cindy E Hauser, Katherine M Giljohann, Michael Rigby, Karen Herbert, Iris Curran, Charlie Pascoe, Nicholas SG Williams, Roger D Cousens, Joslin L Moore



Aim: Invasive populations are often irregularly distributed due to sporadic dispersal events and patchy distribution of suitable habitat, making it difficult to recognize the population boundary and effectively target management. We designed a survey prioritization that addresses these irregularities and tested it on an invasive King Devil Hawkweed (Hieracium praealtum) population. Location: Bogong High Plains, Victoria, Australia. Methods: Our optimal design prioritized discovery of infestations beyond the known population boundary, while accounting for the diminishing likelihood of occurrence, plant detectability and the search resources available. Hawkweed management agencies implemented ..

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Awarded by Australian Research Council

Funding Acknowledgements

This project was supported by an Australian Research Council Linkage Project (LP100100441), in partnership with the Victorian Department of (Environment and) Primary Industries, Parks Victoria and the NSW Office of Environment and Heritage. C.E.H. was partially supported by the National Environmental Research Program Environmental Decisions Hub. For discussion and comments, we thank the Victorian Alps Hawkweeds Eradication Project Control Group, Michael McCarthy, Elaine Thomas, John Kean, Keith Primrose, the Associate Editor and three anonymous referees.