Overall Overview
Total pollen increased by 215, driven almost entirely by a sharp rise in tree pollen (+243), which offset declines in grass and weed pollen. The largest contributors were Oak (+135), Ash (+54), and Mulberry (+26).
Total mold increased by 4,278, led primarily by gains in Ascomycetes (+3,759) and Cladosporium (+2,187), partially offset by declines in Basidiomycetes and Smuts/Myxomycete.
Tree, Grass, and Weed Pollen
Tree pollen increased by 243, with the dominant drivers being Oak (+135), Ash (+54), Mulberry (+26), and Carya (+8). Smaller increases were observed in Other Tree (+10), Hackberry (+4), Pine (+4), and Cedar (+2).
Grass pollen decreased by 8 overall.
Weed pollen decreased by 20, primarily due to declines in Plantain (−12) and Other Weed (−8), resulting in no measurable weed pollen on Apr 20.
Mold Spores
Ascomycetes (+3,759) and Cladosporium (+2,187) accounted for the majority of the overall mold increase. Algae also rose by 24.
The largest declines were seen in Basidiomycetes (−931) and Smuts/Myxomycete (−531). Additional decreases occurred in Alternaria (−71), Epicoccum (−69), Dreshslera/Helminthosporium (−20), Penicillium/Aspergillus (−20), Torula (−12), Curvularia (−10), Rust (−10), Periconia (−6), and Pithomyces (−4).
Key Takeaways
- Tree pollen drove the overall pollen increase, led by large gains in Oak and Ash.
- Grass and weed pollen both declined, with weeds falling to zero.
- Mold levels rose substantially, primarily due to Ascomycetes and Cladosporium.
- Several secondary mold types declined, partially offsetting the largest increases.
Table of Absolute Changes
| Category | Species | Change |
|---|---|---|
| Tree | Quercus (Oak) | +135 |
| Tree | Fraxinus (Ash) | +54 |
| Tree | Morus (Mulberry) | +26 |
| Mold | Ascomycetes | +3,759 |
| Mold | Cladosporium | +2,187 |
| Mold | Basidiomycetes | −931 |
| Mold | Smuts/Myxomycete | −531 |
| Weed | Plantago (Plantain) | −12 |
| Weed | Other Weed | −8 |
Leave a Reply