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Low air spora levels

The most recent sampling period was extremely cold with rain. These conditions would have inhibited the proliferation of fungal spores. Pollen levels were similarly low, but the appearance of  Cupressaceae (cypress tree) pollen signals the approach of the end of winter.

Small spike for Pleospora

The fungal spore and pollen levels were generally low with the exception of a small spike for Pleospora, an allergenic spore that shares antigens with Alternaria and Stemphyllium. The low temperatures and rain would have contributed to the dearth of air spora.

Wet wintry weather

The copious rain that fell over much of the Western Cape during the last week, washed fungal spores and pollen from the atmosphere. However, intermittent moderate levels of ascospores were seen.

Early Winter Air Spora

The fungal spore rose in response to rain as ascospore levels increased. Some early winter pollen grains are appearing, such as daisy and cypress tree pollen, but these are present in low numbers.

Low Airspora Counts

The unseasonally warm days, with cool, but not cold nights and little rain has given rise to low pollen and fungal spore levels during this late autumn period.

Fungal spore levels rise

The recent rains have provided the moisture necessary for the proliferation of fungal spores, after an unseasonally dry autumn. Ascospore levels rose sharply and significant levels were observed during the recent sampling week. Cladosporium levels also increased but did not breach the significant threshold of 3000 spores / cubic metre. Tree, grass and weed pollen levels were consistently low.

Pollen Sampling data: March

The next update will be delayed until April. Tree and grass pollen levels are likely to remain low, weed pollen levels will increase as autumn progresses and the fungal spore levels will increase in response to rain,

Alternaria levels persist at Table View

The significant levels for Alternaria continued during this sampling period, when counts exceeding 100 spores/cubic metre were observed. Grass, tree and weed levels were low.

Fungal spore are increasing as night temperatures are cooler. Following rain last week, the fungals spore levels increased and significant levels were seen for Alternaria, an allergenic fungal spore. All grass, tree and weed pollen levels at this site were consistently low.

Fungal spore levels increase following rain

The pollen and fungal spores were low in Table View during this mid summer period. However, the fungal spore levels may increase sharply in response to rain. Alternaria levels breached the significant threshold following rain during this sampling period. Epicoccum and Cladosporium levels increased but remained below the threshold.