The applications of pollen analysis in environmental monitoring in Akoko North-East Local Government Area of Ondo State, Nigeria

Olugbenga Ebenezer Ige; Benjamin Christopher Essien

doi:10.30574/gscbps.2019.8.1.0113

Authors

Olugbenga Ebenezer Ige Department of Plant Science and Biotechnology, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria.
Benjamin Christopher Essien Department of Plant Science and Biotechnology, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria.

DOI:

https://doi.org/10.30574/gscbps.2019.8.1.0113

Keywords:

Airborne palynomorphs, Environment, Pollen analysis, Vegetation

Abstract

The use of pollen and spores in environmental studies is primarily in its application to the study of vegetational history and the relevance of atmospheric pollen content to the vegetation of a region is related to the palynomorphs produced in situ and those supplied from the surrounding ecological zones. Aeropalynological studies towards monitoring environmental change in Akoko North-East Local Government Area of Ondo State, Nigeria through pollen analysis was carried out in five randomly selected locations comprising of ten sampling sites to determine the pollen types present in the atmosphere of the study environment and the relationship between the airborne pollen assemblages with its vegetation. The palynomorphs were collected with Modified Tauber Sampler using simple random sampling technique and analyzed palynologically. All data were subjected to statistical analyses and results showed that 15,286 palynomorphs were documented of which 149 pollen types belonging to 67 angiospermic plant families were encountered. Three (3) were identified to family level, 48 to species level, 97 to generic level and one (1) unidentified. The presence of Empetrum nigrum, Linum sp. and Vitellaria paradoxa pollen indicates evidence of long distance transport. Pollen types from exotic plants and charred plant particles were part of the atmospheric palynomorphs content recorded as evidence of human impact. Pollen assemblages reflected tropical rainforest vegetation type despite high level of anthropogenic activities. Environmental monitoring through pollen rain analysis and adequate conservation measures through afforestation and prevention of annual bush burning are recommended for safety health and environmental sustainability in the studied area.

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