scholarly journals Occurrence of Toxigenic Microcystis spp in Major Water Bodies of North East India

2020 ◽  
Vol 5 (2) ◽  
pp. 87-92
Author(s):  
Jadab Rajkonwar ◽  
Ajitabh Bora ◽  
Pichili Vijaya Bhaskar Reddy ◽  
Sanjai Kumar Dwivedi
Keyword(s):  
Water Bodies ◽  
Cyanobacterial Blooms ◽  
Ecological Problem ◽  
Diverse Range ◽  
Elisa Kit ◽  
North East India ◽  
North East ◽  
Rdna Sequencing ◽  
Harmful Cyanobacterial Blooms ◽  
Positive Results

Toxigenic cyanobacterial blooms in the water bodies represent a major ecological problem around the world. Some species produces a diverse range of toxins that have hepatotoxic, neurotoxic, cytotoxic and dermatoxic activity and hence have deleterious effect on humans, animals and fishes leading to death as well. Cultural eutrophication of water bodies leads to increased incidence of these harmful cyanobacterial blooms worldwide. North-East India being a biodiversity hotspot harbor many species of cyanobacteria. Few reports suggested presence of few toxigenic cyanobacteria in the water bodies of Assam, but no systematic studies have been undertaken to evaluate their toxicity. This work is being conducted to gather information on major toxigenic cyanobacteria, with special emphasis to microcystin (a cyclic heptapeptides with high acute and chronic toxicities to humans and animals) producing strains. Water samples have been collected from few water bodies of North-East and enriched in specific media. The toxin Microcystin was detected using specific ELISA kit and positive results have been obtained. Further, 16s rDNA sequencing was employed for molecular identification of the strains.

Blooms of toxin-producing Cyanobacteria — a real threat in small dam reservoirs at the beginning of their operation

2011 ◽  
Vol 40 (4) ◽  
Author(s):  
Barbara Pawlik-Skowrońska ◽  
Magdalena Toporowska
Keyword(s):  
Total Concentration ◽  
Taxonomic Composition ◽  
Water Bodies ◽  
Cyanobacterial Blooms ◽  
High Abundance ◽  
First Year ◽  
Species Replacement ◽  
Dam Reservoirs ◽  
Harmful Cyanobacterial Blooms ◽  
Artificial Reservoirs

AbstractLarge and harmful cyanobacterial blooms appeared in two newly-built artificial reservoirs shortly after being filled with water. Taxonomic composition of cyanobacterial communities was highly variable in both water bodies and fast species replacement was observed. In the first year of the operation of the smaller Konstantynów Reservoir, the mass development of Anabaena flos-aquae and Planktolyngbya limnetica (48.7 and 53.6% of the cyanobacterial abundance) occurred in summer, while in autumn the dominance of Planktothrix agardhii (99.9%, 14.95 × 106 ind. Dm−3) was noted. The surface scum developed in summer consisted of An. flos-aquae that contained high amounts of anatoxin-a (1412.4 μg AN-a dm−3 of scum) and smaller amounts of microcystins (10 μg eq. MC-LR dm−3 of scum). In the larger Kraśnik Reservoir, Aphanizomenon flos-aquae occurred in high abundance in spring and summer, however, it was replaced by different species of Microcystis (1.3 × 107 ind. dm−3) which created thick surface scum. Simultaneously, a hazardous increase in the total concentration of microcystins (from 13.6 to 788.5 μg eq. MC-LR dm−3 of water with scum) and anatoxin-a (from 0.03 to 43.6 μg dm−3) was observed.

Past Verses Present; Metamorphosis in Different Spheres of Guwahati: A Study of Srutimala Duara’s Mindprints of Guwahati

2020 ◽  
Vol 8 (2) ◽  
pp. 13
Author(s):  
Ankita Pandey
Keyword(s):  
Point Of View ◽  
Areca Nut ◽  
Medieval Period ◽  
River Bank ◽  
North East India ◽  
North East ◽  
The North ◽  
Indian State ◽  
The City ◽  
Beautiful City

Guwahati derives its name from the Assamese word “Guwa” means areca nut and “Haat” means market. However, the modern Guwahati had been known as the ancient Pragjyotishpura and was the capital of Assam under the Kamrupa kingdom. A beautiful city Guwahati is situated on the south bank of the river Bramhaputra. Moreover, It is known as the largest city in the Indian state of Assam and also the largest metropolis in North East India. It has also its importance as the gateway to the North- East India. Assamese and English are the spoken languages in Guwahati.  In 1667, the Mogul forces were defeated in the battle by the Ahom forces commanded by Lachut Barphukan. Thus, in a sense Guwahati became the bone of contention among the Ahoms, Kochas and the Moguls during the medieval period.  Guwahati the administrative headquarters of Lower Assam with a viceroy or Barbhukan was made by the Ahom king.  Since 1972 it has been the capital of Assam. The present paper will discuss the changes happened in Guwahati over the period of late 1970s till the present time. It will focus on the behavior of people, transformed temples, Panbazar of the city, river bank of Bramhaputra, old Fancy Bazaar, chaotic ways, festivals and seasons including a fifth man made season etc. It will also deal how over the years a city endowed with nature’s gifts and scenic views, has been changing as “a dirty city”. Furthermore, it will also present the insurgencies that have barged into the city. The occurrence of changes will be discussed through the perspective and point of view of Srutimala Duara as presented in her book Mindprints of Guwahati.

The Subaltern Speak- A Study On The Culture Of The Arunachalis With Special Reference To Mamang Dai’s The Legends Of Pensam

2019 ◽  
Vol 5 (4) ◽  
pp. 14-20
Author(s):  
Ms. Cheryl Antonette Dumenil ◽  
Dr. Cheryl Davis
Keyword(s):  
Special Reference ◽  
Small World ◽  
Natural World ◽  
Arunachal Pradesh ◽  
North East India ◽  
North East ◽  
Shared History ◽  
History Of ◽  
And Gender ◽  
Insight Into

North- East India is an under veiled region with an awe-inspiring landscape, different groups of ethnic people, their culture and heritage. Contemporary writers from this region aspire towards a vision outside the tapered ethnic channel, and they represent a shared history. In their writings, the cultural memory is showcased, and the intensity of feeling overflows the labour of technique and craft. Mamang Dai presents a rare glimpse into the ecology, culture, life of the tribal people and history of the land of the dawn-lit mountains, Arunachal Pradesh, through her novel The Legends of Pensam. The word ‘Pensam’ in the title means ‘in-between’,  but it may also be interpreted as ‘the hidden spaces of the heart’. This is a small world where anything can happen. Being adherents of the animistic faith, the tribes here believe in co-existence with the natural world along with the presence of spirits in their forests and rivers. This paper attempts to draw an insight into the culture and gender of the Arunachalis with special reference to The Legends of Pensam by Mamang Dai.

Value Addition Through Higher Education: With Special Reference To Skill Development In North East India

GIS Business ◽  
2019 ◽  
Vol 14 (6) ◽  
pp. 341-348
Author(s):  
Dr. Mini Jain ◽  
Dr. Mini Jain
Keyword(s):  
Higher Education ◽  
Skill Development ◽  
Development Program ◽  
Value Addition ◽  
Quality Initiatives ◽  
North East India ◽  
North East ◽  
The North ◽  
Skilled Manpower ◽  
The Status

In India, higher education is a need of hour. The excellence of Higher Edification decides the production of skilled manpower to the nation. Indian education system significantly teaching has not been tested too economical to form youths of our country employable in line with the requirement of job market. Despite the rise in range of establishments at primary, secondary and tertiary level our young educated folks don't seem to be capable of being used and recovering job opportunities. Reason being they need not non-heritable such skills essential for demand of the duty market. The present study is aimed at analyzing the status of higher education institutions in terms of Infrastructure, various courses of the institute, quality Initiatives and skill development program offered by the Institutes, in the North-East India region, so as to see whether the Higher Educational Institutes of this region are in the process of gradually developing the skills of the students in attaining excellence. The paper also laid emphasis on the measures adopted by these institutes for quality improvement, and to find out their role in combating the adversity acclaimed in the region, since this region’s development is impeded by certain inherent difficulties However, this paper focuses attention on high quality education with special emphasis on higher education for forward linkages through value addition.

Inventorization of Indigenous Medicinal Plants and Practices in Mizoram, North-East India

Pleione ◽  
2017 ◽  
Vol 11 (2) ◽  
pp. 268
Author(s):  
Zorinpuii Khiangte ◽  
H. Lalramnghinglova
Keyword(s):  
Medicinal Plants ◽  
North East India ◽  
North East
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