Treftadaeth Coetiroedd 24 June 2020 Papurau Ymchwil AOD Parnell, S., Gottwald, T.R., Riley, T., van den Bosch, F. (2014) Risk-based sampling for invading plant pests: maximising the number of outbreak sites detected in a landscape. Treftadaeth Coetiroedd 24 June 2020 Papurau Ymchwil AOD Download paper hereEcological Applications 24(4), 779-790. https://doi.org/10.1890/13-0704.1