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Aquatic Weeds Diversity of Bangladesh Agricultural University Campus, Mymensingh, Bangladesh

Md. Delwarul Islam
Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

S.M. Rahmatullah
Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Meraz Ahmed
Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abdulla-Al-Asif
Department of Fisheries and Marine Bioscience, Faculty of Biological Science and Technology, Jessore University of Science and Technology, Jessore, Bangladesh

Abdus Satter
Department of Aquaculture, Sheikh Fajilatunnesa Mujib Fisheries College (Bongomata Sheikh Fajilatunnesa Mujib Science and Technology University), Jamalpur, Bangladesh

Baadruzzoha Sarker
Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Amir Hossain
Department of Fisheries Biology and Genetics, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Subrato Mojumder
Department of Plant Biotechnology, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh2202, Bangladesh

Abstract/ Executive Summary:

A study was conducted to find out the biodiversity of aquatic weeds of Bangladesh Agricultural University Campus Mymensingh from January to May, 2016. A total of 39 weed species were identified from the area. Among four common groups of weeds, five species of floating weeds: Eichhornia crassipes, Pistia stratiotes, Azolla pinnata, Lemna minor, Spirodela polyrrhiza, 22 species of emergent weeds: Alternanthera philoxerodies, Ipomea aquatica, Polygonum glabrum, Sagittaria spp., Oxalis corniculata, Marsilea quadrifolia, Commerlina bengalensis, Commelina appendiculata, Ipomea carnea, Nymphaea rubra, Nymphaea nauchali, Leersia hexandra, Scirpus mucronatus, Ludwigia adscendens, Enhydra fluctuans, Trapa natans, Colocasia esculenta, Hygrorayza aristata, Ipomoea spp., Nymphoides aquatica, Typha latifolia, Aponogeton spp., five species of submerged weeds: Hydrilla verticilata, Cartophyllum demersum, Vallisneria spiralis, Najas minor, Vallisnaria spp. and seven species of algae: Microcystis spp., Chara spp., Anabaena spp., Nitella spp., Spirogyra spp., Chlorella spp., Euglena spp. were identified. Various useful and harmful aspects of these weeds were also discussed.

Keywords: Aquatic weeds; Biodiversity; Bangladesh Agricultural University campus

Location: Bangladesh Agricultural University Campus Mymensingh

Start Date: 00-01-2016

End Date: 00-05-2016

Program Area: Conservation and Biodiversity

Commodity: Aquatic weeds

Objectives:

As there are no previous reported studies on aquatic weed biodiversity of Bangladesh Agricultural University Campus an attempt has been made to study these weeds to fulfill the objectives of identifying different groups of aquatic weeds of Bangladesh Agricultural University Campus; and record different useful and harmful aspects of these aquatic weeds.

Methodology:

2.1. Study area and period Bangladesh Agricultural University campus was selected for the study. The campus contained lots of ponds, drains and a lake. The weeds of these ponds, drains and lake were taken into consideration for the study. The study was conducted for a period of five months from January to May, 2016.

2.2. Collection of sample Aquatic weed samples were collected from the Bangladesh Agricultural University Campus, Mymensingh on each sampling days. The samples were collected from various sites of the campus. These weeds were collected with the help of different fishermen and laboratory assistant personnel. The weeds were preserved in 10% formalin after identification.

2.3. Identification For the identification, the samples were placed on a table for the easy contrast of vision. Identification was done by only eye observation. Identification was done according to Journey (1993), Pasha (1996), Kevin and Lancar (2002), George (2005) etc.

Source of Information: Asian Australas. J. Biosci. Biotechnol. 2017, 2 (2), 181-192

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Bangladesh Agricultural University campus has a lot of ponds. The result showed that the ponds were rich in aquatic weeds. The environment of this area was very suitable for the growth of weeds. Young fish and amphibians used aquatic plants as a source of protection from predatory fish and birds. This, coupled with the abundant food supply, mad aquatic plants important nurseries for young fish and frogs. The sturdy emergent plants provided nest-building materials for many birds. People constructed baskets, mats, boats, and even dwellings from cattail and bulrush stems. Submersed and emergent plants protected shorelines from erosion due to wave action or currents. They can also help to stabilize the sediment which can increase water clarity. Aquatic plants helped to form a vital part of the complex system of chemical cycling in a water body. They can also influence the supply of oxygen in the water. Recently aquatic plants had received a lot of attention for their ability to soak up pollutants from contaminated water. They utilized nutrients that would otherwise be used by algae, thereby improving water clarity. Increasing attention is being paid towards their possible use as indicators of water quality. Along with preventing or eliminating pollution, plant community changes would be estimated by collecting and identifying aquatic plants on year basis. This is also a good way to detect detrimental changes at an early stage when control or elimination of the problem is both less complicated and less costly. Collecting and preserving plants is not difficult, and the result is an increased awareness of aquatic plants, as well as a valuable historic record of what grows in the pond. However, proper identification of the plant is very important for controlling them.

Knowledge Management: Journal