Airborne pollen seasonality of Kars province, a high-altitude region in NE Anatolia-Turkey

Aeropalynological studies quantify pollen present in the atmosphere and elucidate their seasonal variations and regional distribution. Utilizing a Hirst-type volumetric 7-day pollen and spore trap during 2012 and 2013, we conducted an aerobiological investigation in Kars province, Turkey, a region characterized by high altitude and severe climate. Across the 2-year study period, an average annual pollen concentration of 14,931 pollen/m3 was recorded, with 39 taxa identified, including 29.31% woody taxa, 70.58% herbaceous, and 0.11% unidentified. The seven most dominant taxa were Poaceae, Pinaceae, Artemisia, Amaranthaceae, Urticaceae, Quercus, and Cupressaceae/Taxaceae. The data indicated a significant risk period for individuals with pollen allergies from June to July. Statistical analyses were performed to investigate the correlation between the daily pollen concentrations of the dominant pollen types and the variables. The results demonstrated that an increase in temperature was positively correlated with higher pollen counts, whereas increased average relative humidity was associated with reduced pollen concentrations. Notably, herbaceous pollen taxa were more prevalent in Kars. Additionally, the main pollen season starts approximately 6 weeks later than that at lower altitudes. These findings underscore the importance of localized aerobiological monitoring for effective public health responses to pollen allergies.