Research articles published by our college faculties http://localhost:8080/xmlui/handle/123456789/19 2025-12-13T17:39:11Z 2025-12-13T17:39:11Z Barukial, Jayanta http://localhost:8080/xmlui/handle/123456789/60 2023-01-17T08:25:41Z 2011-01-01T00:00:00Z

Title: A STUDY OF MOSS DIVERSITY IN ASSAM VALLEY WET EVERGREEN FORESTS Authors: Barukial, Jayanta Abstract: The present study deals with the enumeration of 127 species of Mosses under 71 genera belonging to 27 families from the Assam Valley Wet Evergreen forests, Assam, India. Among the taxa Pleuridiella colei Robins. and Splachnobryum synoicum Robins are endemic to the present study area. Besides, an anisosporous moss i.e. Macromitriuum moorcroftii (Hook & Grev.) Schwagr recorded in this study which is to be considered as noteworthy contribution towards the evolutionary significance corresponding with heterospory in Pteridophytes. It is the first ever work done as an Indian worker from the present political territory of Assam, India. In this investigation, it has been revealed that the order Hypnobryales consists of 49 species which is 62.23% of the total species recorded in this study. Taxonomically, the order Hypnobryales of Mosses is corresponded to the order Asterales of Dicotyledons of Angiosperms (Chopra, 1975). Considering this statement, most of the workers (Gogoi, 1981; Sarmah, 1989) of floristic study of Angiosperms from the present study area have also agreed with because the taxa under the order Asterales have shown highest diversity and even leading to the level of varieties. The present investigation on the Mosses recorded with 62.23 % of Hypnobryales of total species occurrence is of good corresponds with the Angiospermic order Asterales. Phytogeographically, the present study area considered as Assam Valley Wet Evergreen Forest type under “Tropical and Subtropical Evergreen Forests” (Mehra, et. al. 1983). As the tropical rain forests are at the core of modern biological research it should be conserved in situ which is a new challenge towards the sustainable development of the whole biological diversity as well as biological spectrum; otherwise many of the species of mosses and also other biological diversity would be perished and disappear before being documented from such potentially wilderness areas.

2011-01-01T00:00:00Z Barukial, Jayanta http://localhost:8080/xmlui/handle/123456789/59 2023-01-17T08:20:49Z 2022-01-01T00:00:00Z

Title: Bryophytes as an Accumulator of Toxic Elements from the Environment: Recent Advances Authors: Barukial, Jayanta Abstract: Toxic elements cause a serious threat to both the terrestrial and aquatic ecosystems. They are released into the environment by anthropogenic activities like the discharge of wastewaters viz. industrial effluents, home sewage, use of chemical fertilizers, burning of fossil fuel, mining of different ores, use of radioactive elements, and nuclear reactors which contribute to heavy metal influx into the environment. Bryophytes include liverworts, hornworts, and mosses which have a significant potential to absorb heavy metals, making them useful biomonitoring tools. Because of the lack of an efficient vascular system, heavy metals deposition has been seen in bryophytes. Bryophyte tissue is a potent ion exchanger with the environment; hence, they accumulate heavy metals from the sources. Metalcontaminated streams. Mosses are the most important of the three groups of bryophytes in terms of bioaccumulation of hazardous substances from the environment. Moss species are more effective than vascular plant leaves for monitoring air pollution produced by heavy metals in urban areas. Hence, bryophytes are regarded as the best biomonitoring agent of environmental pollution. Currently, Moss bag techniques have been used to give a low-cost, flexible, and dense monitoring design that can show spatial and temporal trends but also vertical and horizontal gradients for a number of inorganic and organic pollutants. The moss bag approach will successfully overcome the issue of a lack of naturally grown mosses, allowing homogeneous biomonitoring of gaseous pollutants across all anthropogenically devastated areas. It has been utilized successfully for biomonitoring of potentially hazardous elements such as rare earth elements and persistent organic chemicals, primarily polycyclic aromatic hydrocarbons. In this context, a more in-depth research is necessary from the forthcoming researchers in this field.

2022-01-01T00:00:00Z Barukial, Jayanta http://localhost:8080/xmlui/handle/123456789/58 2023-01-17T08:15:21Z 2012-07-01T00:00:00Z

Title: A Bryofloristic Ecological Assessment of Assam, India Authors: Barukial, Jayanta Abstract: Bryophytes, an interesting group of non-vascular cryptogams, constitute one of the important components of phytodiversity of Assam. The present paper deals with an ecological assessment of bryophytes with particular reference to their habitat preferences of Assam, India. In the present investigations a total of 162 taxa of bryophytes (Liverworts, Hornworts & Mosses) under 90 genera and 39 families have been recorded with their proper habitat which reveals an exquisite variety of habitats for their luxuriant growth and spread with an interesting and characteristic bryo-vegetation in Assam. Accordingly, attempt was made to gain an insight into the peculiarities of distribution of the taxa of Bryoflora in different microhabitats such as river bank, river bed, earth cutting slopes, termite mound; tree trunks, knotholes of tree trunks, rotten wood logs; fruit bodies of wood rotting fungi, birds’ nest, old historical monuments etc., which will be considered as noteworthy contributions towards the Bryoflora of Assam considering both taxonomical and ecological aspects.

2012-07-01T00:00:00Z Hazarika, Dilip Barukial, Jayanta Dowerah, Ipsita http://localhost:8080/xmlui/handle/123456789/57 2023-01-17T08:12:39Z 2012-07-01T00:00:00Z

Title: AN ECOLOGICAL ASSESSMENT OF ALGAL GROWTH WITH PARTICULAR REFERENCE TO BLUE-GREEN ALGAE FROM UPPER BRAHMAPUTRA VALLEY OF ASSAM Authors: Hazarika, Dilip; Barukial, Jayanta; Dowerah, Ipsita Abstract: The ecological assessment of algal growth of the present study area i.e. Upper Brahmaputra Valley, Assam is very infancy. The present study revealed that the algal growth depends mainly upon the water holding capacity of the soil and abundance of water which is correlated with the initiation of rainfall. It has also revealed that the rainfall and abundance of water is not the only factor for optimum growth of BGA. Temperature may also play a vital role for the luxuriant growth of BGA along with the abundance of water. Besides, we have noticed that BGA diversity is more in virgin low lying area than other areas. It has seen that in most of the rice fields situated nearby tea garden of the study area has significantly less species diversity of BGA. It is perhaps due to indiscriminately used of chemical fertilizers as well as other chemical herbicides and pesticides in the tea gardens. And also notice that there are no any BGA in the crude oil contaminated paddy fields as well as in other low lying areas near by it. In such area the surface of the water bodies and soil surface is covered completely by crude oil, released from oil digs and Gas Gathering Station (GGS). However, abundance of BGA has gradually increased with the increasing of distances from the point of oil digs and GGS.

2012-07-01T00:00:00Z