Climate change allows pest establishment in unsuitable regions.
A research by Daniel P. Bebber, Mark A. T. Ramotowski and Sarah J. Gurr, demonstrates an average poleward shift of 2.7±0.8 km yr−1 since 1960, in observations of hundreds of pests and pathogens, but with significant variation in trends among taxonomic groups. Observational bias, where developed countries at high latitudes detect pests earlier than developing countries at low latitudes, would result in an apparent shift towards the Equator. The observed positive latitudinal trends in many taxa support the hypothesis of global warming-driven pest movement.
https://doi.org/10.1038/nclimate1990
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