The South African Pollen Monitoring Network: Insights from 2 years of national aerospora sampling (2019–2021)

IF 4.6 2区医学 Q2 ALLERGY Clinical and Translational Allergy Pub Date : 2023-11-01 DOI:10.1002/clt2.12304

Nanike Esterhuizen, Dilys M. Berman, Frank H. Neumann, Linus Ajikah, Lynne J. Quick, Erin Hilmer, Andri Van Aardt, Juanette John, Rebecca Garland, Trevor Hill, Jemma Finch, Werner Hoek, Marion Bamford, Riaz Y. Seedat, Ahmed I. Manjra, Jonny Peter

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引用次数: 1

Abstract

Background

Pollen monitoring has been discontinuously undertaken in South Africa, a country with high biodiversity, a seasonal rainfall gradient, and nine biomes from arid to subtropical. The South African Pollen Monitoring Network was set up in 2019 to conduct the first long-term national aerospora monitoring across multiple biomes, providing weekly reports to allergy sufferers and healthcare providers.

Methods

Daily airborne pollen concentrations were measured from August 2019 to August 2021 in seven cities across South Africa. Updated pollen calendars were created for the major pollen types (>3%), the average Annual Pollen Index over 12 months was calculated, and the results were compared to available historical data.

Results

The main pollen types were from exotic vegetation. The most abundant taxa were Poaceae, Cupressaceae, Moraceae and Buddleja. The pollen season start, peak and end varied widely according to the biome and suite of pollen taxa. The main tree season started in the last week of August, peaked in September and ended in early December. Grass seasons followed rainfall patterns: September–January and January–April for summer and winter rainfall areas, respectively. Major urban centres, for example, Johannesburg and Pretoria in the same biome with similar rainfall, showed substantive differences in pollen taxa and abundance. Some major differences in pollen spectra were detected compared with historical data. However, we are cognisant that we are describing only 2 years of data that may be skewed by short-term weather patterns.

Conclusions

Differences in pollen spectra and concentrations were noted across biomes and between geographically close urban centres. Comparison with historical data suggests pollen spectra and seasons may be changing due to anthropogenic climate change and landscaping. These data stress the importance of regional and continuous pollen monitoring for informed care of pollinosis.

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南非花粉监测网络:来自2年国家空气孢子取样(2019-2021)的见解

南非是一个具有高生物多样性、季节性降雨梯度和从干旱到亚热带9个生物群落的国家，花粉监测一直不间断地进行。南非花粉监测网络成立于2019年，旨在对多个生物群落进行首次长期国家空气孢子虫监测，并向过敏患者和医疗保健提供者提供每周报告。方法于2019年8月至2021年8月在南非7个城市测量每日空气中花粉浓度。更新了主要花粉类型(>3%)的花粉日历，计算了12个月的平均花粉指数，并将结果与现有历史数据进行了比较。结果花粉类型以外来植物为主。分布最丰富的分类群为禾本科、柏科、桑科和菩提树科。不同的生物群系和不同的花粉类群，花粉季节的开始、高峰和结束有很大的差异。主要的树木季节从8月的最后一周开始，在9月达到顶峰，在12月初结束。夏季和冬季降雨区草季降水模式分别为9 - 1月和1 - 4月。主要城市中心，例如约翰内斯堡和比勒陀利亚，在相同的生物群落中，降雨量相似，在花粉分类群和丰度上表现出实质性的差异。与历史数据比较，发现花粉谱存在较大差异。然而，我们认识到，我们描述的只是2年的数据，可能会受到短期天气模式的影响。结论不同生物群系和地理位置相近的城市中心之间花粉谱和浓度存在差异。与历史数据的比较表明，由于人为气候变化和景观美化，花粉谱和季节可能发生变化。这些数据强调了区域和持续的花粉监测对于授粉病知情护理的重要性。

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来源期刊

Clinical and Translational Allergy Immunology and Microbiology-Immunology

CiteScore

7.50

自引率

4.50%

发文量

117

审稿时长

12 weeks

期刊介绍： Clinical and Translational Allergy, one of several journals in the portfolio of the European Academy of Allergy and Clinical Immunology, provides a platform for the dissemination of allergy research and reviews, as well as EAACI position papers, task force reports and guidelines, amongst an international scientific audience. Clinical and Translational Allergy accepts clinical and translational research in the following areas and other related topics: asthma, rhinitis, rhinosinusitis, drug hypersensitivity, allergic conjunctivitis, allergic skin diseases, atopic eczema, urticaria, angioedema, venom hypersensitivity, anaphylaxis, food allergy, immunotherapy, immune modulators and biologics, animal models of allergic disease, immune mechanisms, or any other topic related to allergic disease.