Biodiversity

Indigenous knowledge is the basis for local level decision making in agriculture, healthcare, food preparation, education, natural resource management, and a host of other activities in rural communities.

Dear friends,

We are all aware of the immense ecological, cultural and social significance of rivers originating and flowing through the Western Ghats. This includes source regions of East flowing rivers like Krishna, Godavari and Cauvery and the source, riparian and estuarine region of all West flowing rivers.

We are lucky to still have some of the very few and very rare 'free flowing rivers' in the country. Most of the rivers in our country have been dammed and diverted. This has changed the ecological and physical characteristics of these rivers completely. Today, it is difficult for us to visualise the amazing range of ecological goods and services that an undammed, free flowing river can provide. Some such rivers in the Western Ghats are Shastri, Aghanashini, Gargai and Seetha Nadi.

This study by National Environmental Engineering Research Institute published in Current Science was carried out to identify Pteris vitta and test its hyper-accumulating properties. The plant is commonly known as the Ladder brake fern or Chinese brake fern plant in India, and had been reported elsewhere as an arsenic hyper-accumulator.

.The remediation of arsenic and chromium contaminated soil and water has become an important environmental issue. It is in this context that the discovery of hyper-accumulator plant species, which have the unusual ability of accumulating metals such as arsenic (As), chromium (Cr), zinc (Zn), nickel (Ni) and copper (Cu) to very high concentrations, has further boosted technologies based on this property.

This is the first report of characterization of arsenic accumulation in an Indian ecotype (plant), which also shows chromium hyperaccumulation in addition to arsenic. Intact plantlets were grown in 20 per cent Hoagland solution amended with up to 200 mg arsenic or chromium medium. Plants absorbed and accumulated a significant amount of arsenic and chromium in their biomass with high bio-enrichment factor. Arsenic and chromium tolerance by spores and gametophytes under in-vitro was also assessed.

After exploration she found that more than 3 ton fish have died in Kelo River in last one week.

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 One tributary was within a protected area (PA; Corbett National Park); the other two were outside the PA (Lansdowne Forest Division). Cast nets were used for fish sampling, which was done from 9.00 a.m. to 5.00 p.m.

The terrible earthquake and the disastrous sweep of the tsunami has left a trail of suffering in Japan. As our hearts go out to the Japanese, and to the impacted people, every natural disaster should provide us an opportunity to access where we have gone wrong.

Forwarded to the portal by : Pranab J Patar

Earthwatch Institute is an international environmental organization that engages people in scientific field research and education to promote the understanding and action necessary for a sustainable environment

Temple Fish Sanctuaries: Last bastions of native fish and pristine river stretches

Organizer: North East Centre for Environmental Education and Research (NECEER)

Venue: New Delhi

Topics:

• Floristic and faunal studies
• Human-Wildlife Conflict

The Indian Ocean extends over 30 per cent of the global ocean area and is rimmed by 36 littoral and 11 hinterland nations sustaining about 30 per cent of the world’s population. The landlocked character of the ocean along its northern boundary and the resultant seasonally reversing wind and sea surface circulation patterns are features unique to the Indian Ocean.