The following points highlight four sampler that are conventionally used for trapping pollen grains. The samplers are: 1. Rotorod Sampler 2. Burkard Personal Volumetric Sampler 3. Burkard Seven Day Volumetric Sampler 4. Andersen Two Stage Sampler. 1. Rotorod Sampler: The rotorod sampler (Fig.10.10) was originally devised by Perkins (1957) and has been somewhat modified by Harrington (1959). The device relies [...]
The deposit that contains pollen grains and spores suitable for identification and analysis include peats, lake sediments, soil and mor humus. Peats: Peats are the early stage of coalification which are formed due to accumulations of organic detritus largely of plant origin. Peats are developed into a stratified sequence due to the successive deposition of plant parts containing pollen and [...]
The following points highlight the two laboratory techniques for the extraction of pollen grains. The techniques are: 1. Pollen/Spore Extraction Procedure 2. Absolute Pollen Counts. 1. Pollen/Spore Extraction Procedure: It is not possible to use the entire core systematically for pollen extraction, hence samples are taken at selected depth intervals along the core. The selection of depth intervals is entirely [...]