AMERICAN JOURNAL OF SCIENTIFIC AND INDUSTRIAL RESEARCH © 2016,Science Huβ, http://www.scihub.org/AJSIR ISSN: 2153-649X, doi:10.5251/ajsir.2016.7.4.117.128 Diversity of Aquatic Weeds at Noakhali Sadar in Bangladesh Md. Imrul Kaisar1, Ripon Kumar Adhikary2, Moon Dutta1, Shuva Bhowmik3* 1Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, Bangladesh 2Department of Fisheries and Marine Bioscience, Jessore University of Science and Technology, Jessore, Bangladesh 3Department of Fisheries Technology, Bangladesh Agricultural University, Mymensingh, Bangladesh *Corresponding author: Shuva Bhowmik, Department of Fisheries Technology, Bangladesh Agricultural University, E-mail:
[email protected] ABSTRACT The study was conducted to investigate the aquatic weeds diversity and abundance at Noakhali Sadar, Bangladesh. This paper focused on species variation, number of species, water quality parameters and identification of aquatic weeds. It was assessed by collecting samples from two fish cultured ponds, two floodplains and two roadside canals during May to October, 2013. According to this study, total 22 species belonging to 12 orders, 16 families and 21 genus were found. Again, 46%, 28%, 26% of total aquatic weeds were identified from the floodplains, roadside canals and culture ponds, respectively. During this study period, nine species of family Pontederiaceae, Convolvulaceae, Menyanthaceae, Asteraceae, Poaceae, Araceae, Amaranthaceae, Polygonaceae were common in culture ponds, floodplains and roadside canals. Number of aquatic weeds was lowest in culture ponds due to the effective management. Noticeable species– Lemna minor, Marsilea quadrifolia, Ludwigia palustris, Aeschynomene aspera, Najas graminea, Hydrilla verticillata, Najas guadalupensis, Utricularia inflata were only found in floodplains. On the other hand, two species were common in fish cultured ponds and floodplain- Pistia stratiotes and Equisetum hyemale.