• Dr. Monjit Saikia

The undivided Nagaon district of Assam is located on a global position between the latitude 250 47/ N to 260 42/ N and between 920 25/ E to 930 19/E N longitude. The district contains 379 small and big natural waterbodies, out of which 4 large and perennial wetlands (Beel) covering an area of 750 hectares have for the been selected present study i.e from June,2017 to May, 2018. Altogether 110 aquatic macrophyte species have been recorded, out of which 8 species were found to be exotic. The species growing along the marshy edges of the wetlands formed the dominant ecological category Emergent Anchored (39.09%) and were widely distributed throughout the wetlands. Some of the macrophytes were found to form carpet and floating mat. Ecological classification was done and found that 8 species were under category Free floating, 3 were submerged suspended, 9 were Submerged anchored, 11 species Rooted with floating leaves, 10 species Rooted with floating shoots, 43 Emergent anchored and 26 were of Swamp and marshy. The species diversity indices (SDI) of the plant communities of the study sites ranges from 0.40 to 0.69 during summer and from 0.25 to 0.36 during winter. While SDI of submerged species ranges from 0.07 to 0.09. The highest similarity index (71.52) of the species was recorded in between Haribhanga and Morikolong beel, While the highest Dissimilarity index (41.43) was recorded in between the species of Nabhanga and Samaguri Beel.

Macrophyte, Beel, Ecological classification, Wetland, Mat.

"ECOLOGICAL STUDIES OF THE MACROPHYTES OF WETLANDS OF NAGAON DISTRICT OF ASSAM, INDIA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.20-25, may-2019, Available :http://www.jetir.org/papers/JETIR1905Z03.pdf

"ECOLOGICAL STUDIES OF THE MACROPHYTES OF WETLANDS OF NAGAON DISTRICT OF ASSAM, INDIA", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp20-25, may-2019, Available at : http://www.jetir.org/papers/JETIR1905Z03.pdf