The following points highlight the four main methods of air sampling. The methods are: 1. Gravity Sedimentation Methods 2. Inertial Methods 3. Filtration 4. Precipitation. 1. Gravity Sedimentation Methods: a. Sedimentation from still air: Alvarez and Castro (1952) constructed a simple box for the study of airborne fungi, has two hinged slides and a covered tray at the bottom for [...]
One of the most frequent questions a Palaeobotanist or Palaeontologist hears concerns the method for dating sediments containing fossil plants and animals. Present knowledge is based on a long series of efforts to date the ages of various rocks. At the present time, the best absolute dating involves the use of naturally occurring radioactive isotopes contained in various minerals that [...]
The term aerobiology came into use during 1930 for the studies of airspora like airborne fungal spores, pollen grains and other microorganisms. Jacobs (1951) elaborated the term to include dispersion of insect populations, fungal spores, pollen grains, bacteria and viruses. In fact, all forms of life belonging to both plants and animals which become airborne are transported partly or wholly [...]