Biodiversity

Term Path Alias

/topics/biodiversity

Featured Articles
October 17, 2023 How does barge trafficking/movement affect the ecology and biodiversity of riverine ecosystems? A study explains.
River Hooghly at Kolkata (Image Source: Yercaud-elango via Wikimedia Commons)
May 20, 2023 Freshwater biologists Sameer Padhye and Avinash Vanjare talk about smaller and lesser known animals that live in freshwater ecosystems and the importance of studying them. 
Freshwater ecosystems, under threat (Image Source: Biologia Life Science LLP)
January 25, 2023 This study found large deposits of heavy metals in the tissues and organs of water birds, crabs and fish inhabiting the lake indicating heavy metal contamination of the lake waters.
A view of the Veeranam lake in Tamil Nadu (Image Source: Giri9703 via Wikimedia Commons)
December 4, 2022 What is the status of inland fisheries in India? Read these situational analysis reports to know about inland fisheries, the life of the fisherfolk, governance and tenure in inland fisheries and threats to the sustainability of inland fisheries.
Fishing in an irrigation canal in Kerala (Image Source: Martin Pilkinton via Wikimedia Commons)
August 2, 2022 The frequency and intensity of floods is on the rise in Assam spelling doom for fish biodiversity.
Life during floods in Assam (Image Source: Kausika Bordoloi via Wikimedia Commons)
Hydropower in the Northeast: Potential and harnessing analysis - A critique
This paper was commissioned as an input to the study “Development and Growth in Northeast India: The Natural Resources, Water, and Environment Nexus” by the World Bank. Posted on 15 Jan, 2012 11:41 PM

The main objectives of the hydropower study are as follows: 

  • An analysis of the hydropower potential in the Northeast and key elements of the strategy that should be followed for optimal realization of this potential 
  • An overview of the hydropower development options in the Northeast with regard to the water resources in the different river basins, including consideration of flood control and irrigationmap of the north-eastern states

Map of the north-east states

Environment Statistics – A compendium by the Ministry of Statistics and Programme Implementation (2011)
The Ministry of Statistics and Programme Implementation (MoSPI) has come up with a Compendium of Environment Statistics 2011, the twelfth edition of the series, which started in 1997. Posted on 07 Jan, 2012 04:25 PM

It broadly covers five core parameters, viz., biodiversity, atmosphere, land/soil, water and human settlements suggested by the Framework for Development of Environment Statistics (FDES) published by United Nations Statistics Division (UNSD) in 1984.

A survey of point of use household water treatment options for rural south India: A report detailing resources available
This report examines the various methods of point-of-use water treatment options available, their pros and cons, and their suitability for South India. Posted on 07 Jan, 2012 10:59 AM

Point of use household water treatment is the process of treating water at the household level to improve its microbiological purity. In cases where treated municipal water is not available, or is subject to recontamination due to a faulty distribution system, household water treatment is essential and allows families control over their drinking water. 

Big dams and protests in India: A study of Hirakud dam – An article in EPW
This article by Arun Kumar Nayak in the Economic and Political Weekly (EPW) examines the movement against the construction of the Hirakud dam in Orissa. Posted on 06 Jan, 2012 12:29 PM

It is evident that the domestic resistance to the project was variously compromised by nationalist rhetoric, imperatives of state development and absence of transnational support. The Hirakud dam project has failed on all of its objectives – flood management, hydropower production, irrigation and navigation. Its socio-economic impact has been devastating.

Living rivers, dying rivers: Bagmati river in Nepal
The fifth lecture in the ten-part series titled "Living Rivers, Dying Rivers" was delivered by Dr. Ajaya Dixit and Dr. Dipak Gyawali. Posted on 05 Jan, 2012 06:07 PM

Bagmati river in Kathmandu: From holy river to unthinkable flowing filth

Bagmati river, Nepal (Source:Bagmati Action Plan 2009-2014)

Ajaya Dixit initiated his presentation with a general account of how rivers shape the landscape and how riverine ecosystems have nurtured society and kept civilisations vibrant, cultured and creative. Dixit went on to discuss the basin characteristics of the Bagmati, a tributary of the Kosi that rises in the Shivapuri hills, north of the Kathmandu valley. Around fifteen percent of the basin area (3700 sqkm) lies in Nepal, while the remaining is in India. The average annual rainfall in the basin is 1400 mm and is more than 2000 mm in the hills. Bagmati is a seasonal river with rainfall and springs as its main source. Its mean flow is 15.6 cubic metre/second and low flow is 0.15 cubic metre/second in April.

Kathmandu lies in the Upper Bagmati basin and studies suggest that an ancient lake called the Paleo-Kathmandu lay within the Kathmandu valley as a lacustrine formation. Early settlers lived in lower slopes and used springs and river in the upper reaches. When they moved to the valley floor, they built dongia dharas, which are stone water spouts fed by the unconfined aquifers and delivered water through surface channels. Even today, dongia dharas dated back to 1500 years exist. The state built canals (raj kulo) tapped the upper stretches of the rivers close to the mountains. Rivers and irrigation helped recharge aquifers and ponds.

However, rising urbanisation has damaged these ancient artifacts. Over the last sixty years Kathmandu has expanded massively and its population has increased from 0.41 million in 1951 to 2.6 million in 2011. The city has a huge transient population aside from this, reducing it to a concrete nightmare. Seismologists suggest that Kathmandu is a rubble city in the making. Though the Bagmati river flow has not changed significantly in the last seventy years, the character of the river has been transformed significantly during the period 1970 to 1990. The river has been canalised while the dumping of the city’s garbage into it continues. Dixit identified a plethora of problems faced by the river such as upstream water diversion for drinking water needs, disposal of untreated liquid waste, disposal of solid waste, river jacketing for roads and commercial activities, sand mining and physical encroachment.

The state of the river is an outcome of the current approach to waste management particularly liquid waste management. Three types of waste water namely yellow water flux, grey water and yellow black flux are being generated and flowing water is being used as a vehicle to dispose these. The idea of a water based disposal system e.g. flush toilet embedded in Victorian engineering has led to a technological lock-in with the result that the notion of a natural hydrological cycle has undergone a fundamental transformation.

All the same, the bulk of the load in the river is biological though there are some factories releasing effluents. In the last 20 years some of them have been closed or relocated and the river now stands a chance of being salvaged.

  

 

Bagmati River at Pashupatinath Temple (Source:Wikipedia)
SBFP invites applications for Infrastructure Consultant, Sikkim - Apply by January 10, 2012
Posted on 02 Jan, 2012 06:22 PM

SBFP

Sikkim Biodiversity Conservation & Forest Management Project (SBFP) works to strengthen biodiversity conservation activities and forest management capacity, and to improve livelihood for the local people who are dependent on forests by promoting sustainable biodiversity conservation, afforestation and income generation activities including eco-tourism for community development, thereby contributing environment conservation and harmonized socio-economic development of Sikkim.

National Alliance for People s Movements condemns arrest and harassment of anti-dam protesters in Assam
NAPM demands scrapping of big dams in Brahmaputra River Valley. Posted on 28 Dec, 2011 12:10 PM

Content courtesy: National Alliance for People's Movements

On the 26 December, 2011, at 2:15 am, Assam Police in collusion with other security forces swooped down on the protesters at Ranganadi who have been blockading the Highway since December 16 and thwarting state’s attempt to carry turbines and dam materials to project site of Lower Subansiri Dam. Nearly 200 people have been arrested and earlier also security forces have been harassing the protestors. In past too, Krishak Mukti Sangram Samiti fighting against the big dams on Brahmaputra have faced government’s ire and often been attacked and jailed. NAPM stands in solidarity with KMSS and other students groups of the region who have been consistently opposed to the big dams in highly sensitive seismic zone. We condemn the sustained action and harassment of KMSS and their activists and targeting of Akhil Gogoi for constantly opposing the destructive development policies and corruption of the government machinery.

Trouble in Tigerland: Why conservation efforts continue to fail
Nitin Rai explores how conservation projects have produced marginalised communities and erased social and cultural histories. Posted on 30 Nov, 2011 11:53 AM

Guest Post: Nitin Rai, Ashoka Trust for Research in Ecology and the Environment (ATREE)

Drawing upon his experience working with the Soligas who live within the Biligiri Rangaswamy Temple Wildlife Sanctuary, Nitin Rai talks about the ‘wilderness’ myth and explores the origins and impacts of the belief that people and animals cannot co-exist. 

map showing the Soliga lands within the BRT

Bringing life back to Chilika lagoon in India
This video describes the efforts undertaken to restore the Chilika lake in Orissa, which is the largest lagoon on the east coast of India Posted on 28 Nov, 2011 10:34 AM

Content and Media Courtesy: International Union for Conservation of Nature

This 116,500 hectare brackish lagoon separated from the Bay of Bengal by a long sandy ridge was added to the Ramsar List of Wetlands of International Importance in 1981.This was because the lagoon was facing serious degradation due to siltation and choking of the seawater inlet channel, resulting in the proliferation of invasive freshwater species, the decrease in fish productivity, and an overall loss of biodiversity [1].

National conference on ' Biodiversity assessment, conservation and utilization', Abasaheb Garware College, February 9-11, 2012, Pune
Posted on 19 Nov, 2011 02:13 PM

Organizers: Abasaheb Garware College, Pune

Venue: Abasaheb Garware College, Karve Road, Pune

Description:

The Department of Biodiversity, Abasaheb Garware College, Pune is organizing a National Conference on 'Biodiversity Assessment, Conservation and Utilization'  during 9-11 Feb 2012 under the chairmanship of renowned ecologist Prof. Madhav Gadgil. In connection with this a theme based nature photography competition named 'Wild Reflections' is also being organized.