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New paper on the risk of Rapid ʻŌhiʻa Death to New Zealand & the S Pacific. This cross #BSI collaboration, supported through #B3NZ, assesses threats to pōhutukawa, rātā and other hosts, identifies spread pathways, and highlights priorities for surveillance and preparedness.
doi.org/10.1007/s105...

Maps of New Zealand a and b showing: Estimate of suitability of Aotearoa New Zealand regions for the establishment of rapid ‘ōhi’a death (ROD) pathogens Ceratocystis lukuohia and C. huliohia, predicted by Hawaiian temperature-disease relationships (Fortini et al. 2019) for (a) mean annual temperature, and (b) mean temperature of the warmest quarter. Grey indicates mean annual temperature ≤10.7°C (temperatures below those recorded in Hawaiʻi). Orange indicates temperatures between 10.7 and 13.6°C, red indicates temperatures above the 13.6°C threshold for disease presence, up to the maximum mean annual temperature for Aotearoa New Zealand, 16.2°C, and maximum mean temperature of the warmest quarter, 25.0°C. Mean annual temperature and temperature of the warmest quarter data from 1950–1980, NZEnvDS (McCarthy et al. 2021a, 2021b)