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Diversity, Distribution and Abundance of Plant Species in Bangladesh Agricultural University Campus

Z Mustaina
Department of Environmental Science, Bangladesh Agricultural University, Mymensingh 2202

MA Islam
Department of Environmental Science, Bangladesh Agricultural University, Mymensingh 2202

MA Farukh
Department of Environmental Science, Bangladesh Agricultural University, Mymensingh 2202

P Biswas
Department of Environmental Science, Bangladesh Agricultural University, Mymensingh 2202

Abstract/ Executive Summary:

The study was conducted on the distribution, abundance, and diversity of plant species of Bangladesh Agricultural University (BAU), Mymensingh. To conduct the experiment, 20 sampling sites were selected randomly within the study area having an area of 3 square meters and all the plants of various genera and species within the sampling sites were identified. A total number of 9140 plants of 36 species belonging to 28 families were recorded from all the sampling sites among which Axonopus compressus species were identified at the highest number (2755) whereas the species of Borassus flabellifer, Prunus avium, Saracaasoca, Lagerstroemia speciosa, Cassia fistula, and Acacia catechu were found at the lowest (01). In the case of relative abundance, the percentage was found approximately 30.14% for Axonopus compressus whereas for each of Borassus flabellifer, Prunus avium, Saracaasoca, Lagerstroemia speciosa, Cassia fistula, and Acacia catechu it comprises only 0.01% within the total plant species. Considering the habits of the plants, in case of tree species Swietenia macrophylla showed a relatively high abundance (0.175%) and Borassus flabellifer showed the low (0.01%) whereas among the herb Axonopus compressus (30.14%) was found at the highest and Centellaasiatica (0.005%) was at the lowest in terms of abundance. The diversity indexes also revealed that the highest diversity of the plants was observed in the BINA quarter having a value of 0.763 and the lowest was observed in front of the Agronomy faculty (0.018) among the twenty sampling sites. These results emphasized the importance of furthermore and a wide variety study on the plant species within this study area.

Keywords: Distribution, Abundance, Diversity, Plant species, BAU

Location: Bangladesh Agricultural University (BAU), Mymensingh.

Start Date:

End Date:

Program Area: Conservation and Biodiversity

Commodity: Diversity

Objectives:

To prepare a complete list of different plant species under different taxa as well as to evaluate the diversity of rare and endangered plant species grown at Bangladesh Agricultural University (BAU) campus, Mymensingh.

Methodology:

Bangladesh Agricultural University, which is one of the largest Agricultural Universities of South Asia was selected as the study area to conduct the present study. The university is located at Mymensingh division of Bangladesh in between the latitude of 23.7099¢N and longitude of 90.4071¢E. Having an area of about 486ha and covered by scenic rural surroundings, the university campus is located on the western bank of the old Brahmaputra River which is about 5km south of the Mymensingh Railway Station and about 120km north of Dhaka, the capital of Bangladesh. The soil belongs to the Sonatola series of the Brahmaputra alluvium tract and is medium-textured (loam and salty loam), but there are also some fine-textured soils. Soil pH varies from 6.0 to 7.6 while most of the soil exhibited a pH value around neutrality. On the other hand, the climatic condition of the study area is sub-tropical in nature where rainfall is heavy during Kharif (16 March to 15 November) season and scanty in Rabi (16 November to 15 March) associated with moderately low temperature and plenty of sunshine. At first, a guide map was collected from the Bangladesh Agricultural University website. Then 20 sampling sites were selected randomly from the map, covering the whole University area and from the each of 20 sampling sites 3m² areas were selected randomly. Then total numbers of all individual plant species were counted from each site and finally the botanical information of different plants, such as common name, scientific name, family, genus, species, and habits were collected from different websites and scientific journals. Relative species abundance is a component of biodiversity and refers to how common or rare a species is relative to other species in a defined location or community. Relative abundance also refers to the percent composition of an organism of a particular kind relative to the total number of organisms in the area. Different populations in a community exist in relative proportions and this idea is called relative abundance. A species diversity index is a measure that renders considerable ecological entity insight. Simpson’s diversity index (SDI) measures community diversity. Index of species diversity was calculated to examine the species richness and abundance distribution at the Bangladesh Agricultural University campus.

Source of Information: Progressive Agriculture 32 (1): 22-30, 2021

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It also suggested that a wide range of further study considering more sampling sites should be conducted to identify all the plants of Bangladesh Agricultural University as well as to create a database system for these plant species so that the authority and the students can get the idea easily about the rare and endangered species, understand the necessity of its conservation as well as take proper steps to protect the biodiversity of this beautiful campus from being destroyed.

Knowledge Management: Journal