Fungal bioaerosols present in the environment varies from season to season, month to month, day to day and place to place. They are widely distributed in the environment and pose no problem when their quantity and types are kept within reasonable limits. Environmental conditions play an important role for distribution of bioaerosols. During the present investigation gravity petriplates method was used for the survey of bioaerosols. The survey was conducted for one year from July 2008 to June 2009. The samples of bioaerosols were collected twice a month at fortnightly intervals. In the present studies biodiversity of Aspergillus species in the environment of Nawapara (Rajim), District-Raipur, Chhattisgarh was observed. Total 18 Aspergillus species and 696 colonies were recorded. The percentage frequency and contribution of different Aspergillus species were different in different seasons. Aspergillus flavus and A. niger were most frequent throughout the year followed by A. versicolar, A. fumigatus, A. luchuensis, A. sydowii, A. carneus, A. terreus, A. japonicus, A. ochraceous, A.oryzae, A. tamarii, A. chevalieri var. intermedius, A. parasiticus, A. awamori, A. niveus, A. speluneus while A. nidulans was the least frequent species. It was also observed that the maximum percentage contribution of A. niger (33.76%) followed by A. flavus (27.29%), A. versicolor (10.63%), A. fumigatus (3.44%), A. luchuensis (3.16%), A. sydowii (3.16%), A. terreus (2.44%), A. ochraceous (2.01%), A. japonicus (1.86%), A. tamarii (1.86%), A. carneus (1.72%), A. chevalieri var. intermedius (1.72%), A. oryzae (1.58%), A. awamori (1.29%), A. niveus (1.29%), A. parasiticus (1.00%) while A. nidulans and A. speluneus (0.86%) were least contribution to the fungal bioaerosols.
