2020

Author(s): Ziska LH, Berman D

The recognition and documentation of climatic change effects on human health remains one of the most important challenges of the 21st century. While myriad in scope, one of the most recognised impacts is related to pollen, specifically its production, release and duration, and the consequences for allergic diseases, including asthma and allergic rhinitis. At present, the bulk of efforts to understand and document these links have been conducted by scientists in the Northern Hemisphere. However, the link between climate change and aeroallergenic pollen is global and international in scope. For this reason, more recent efforts to provide similar evaluations have been initiated by scientists in the Southern Hemisphere. The current review acknowledges northern enquiries, but also emphasises research gaps and inconsistencies which should be avoided by southern investigators. To remedy these deficiencies, some suggestions are offered, including a greater emphasis on plant demographics, the standardisation of pollen metrics, automation and environmental integration. It is hoped that this perspective will be able to provide support to efforts of scientists in the Southern Hemisphere to evaluate better climate shifts and aeroallergen consequences. Overall, there is a clear and pressing need to understand these likely changes while simultaneously comprehending their impact on pollen-related health outcomes - for both hemispheres.

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