Reserve may submerge in Ken-Betwa project

September 25, 2016

New Delhi, Sep 25: About 7.2 lakh trees and a huge 90 square kilometres area of Panna Tiger Reserve (PTR) may be submerged in water due to the Ken-Betwa river linking project, according to an official report.

tiger

There will be also be an "irreversible" loss of breeding sites for wild animals after submergence of critical and specialised habitats under the proposed project which is likely to cost over Rs 9,000 crore.

The Ken-Betwa project is expected to provide drinking water supply for 13.42 lakh people and help irrigate 6.75 lakh hectares of land in the poverty-ridden Bundelkhand region covering parts of Madhya Pradesh and Uttar Pradesh.

The project is founded on construction of a dam at Dhaudan village inside the PTR's core area in Chhatarpur district of Madhya Pradesh.

"The entire forest area under the proposed submergence both within and outside PTR is tiger habitat, while the non-forest area is potential tiger habitat. Thus, about 90 sq km area of tiger habitat, including potential habitat, will have to be considered as submergence zone," National Board of Wildlife (NBWL) Standing Committee report on Ken-Betwa link project said.

At present, there are around 35 tigers in the reserve, which had in 2009 reported extinction of the big cats.

The report, which has been submitted to Union Environment Ministry, said the total counting of trees in the proposed submergence area has not been done, but a sample survey by the forest department has estimated that "about 7.2 lakh trees above 20 cm girth at breast height would submerge in the national park area and this number may go up to about 12 lakh stems when young poles and established sapling are accounted".

It said an equally high number of trees will be cut or lost in the forest areas outside the national park. "Thus considerable quantity of carbon stored as biomass would be released once the dam is constructed, in addition to loss of vegetation diversity," said the report, a copy of which was received by wildlife activist Ajay Dubey in response to an RTI query filed by him.

He said the National Green Tribunal and appropriate court will be approached to challenge the proposed project on the basis of the report's findings. The report said Panna Tiger Reserve has largely been valued with respect to the requirement of the tiger.

"The importance of other key wildlife such as sloth bear, leopard, rusty spotted cat, hyena, sambhar, chital, four-horned antelope and chinkara are largely ignored under the shadow of tiger, although tiger conservation may support the conservation of its associated fauna. Ken river along with its tributary is a lifeline of the park. Ken river basin is full of gorges, caves, rock crevices which are normally occupied by wild mammals for breeding and resting.

"During hot days in summer, these gorges, caves, rock crevices are major shelters for some of the animals listed above. Loss of breeding sites will be irreversible after submergence of these critical and specialised habitats, specifically in the major submergence zone," it said.

The blasting of stone quarries, use of heavy machinery, movement of heavy vehicles and presence of over 500 workers (at a time) for construction are some of the "major concerns", the report said.

"Given that the region (Bundelkhand) is poverty-ridden, the realised benefit of the project cannot be ignored and that there would certainly be a need to strike a balance between wildlife conservation and people's livelihood considerations," it said. The estimated cost of Ken-Betwa project is Rs 9,393 crore.

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Agencies
February 23,2020

Google has indexed invite links to private WhatsApp group chats, meaning anyone can join various private chat groups (including several porn-sharing groups) with a simple search.

According to a report in Motherboard, invitations to WhatsApp group chats were being indexed by Google.

The team found private groups using specific Google searches and even joined a group intended for NGOs accredited by the UN and had access to all the participants and their phone numbers.

Journalist Jordan Wildon said on Twitter that he discovered that WhatsApp's "Invite to Group Link" feature lets Google index groups, making them available across the internet since the links are being shared outside of WhatsApp's secure private messaging service.

"Your WhatsApp groups may not be as secure as you think they are," Wildon tweeted on Friday, adding that using particular Google searches, people can discover links to the chats.

According to app reverse-engineer Jane Wong, Google has around 470,000 results for a simple search of "chat.whatsapp.com", part of the URL that makes up invites to WhatsApp groups.

WhatsApp spokesperson Alison Bonny said: "Like all content that is shared in searchable public channels, invite links that are posted publicly on the internet can be found by other WhatsApp users."

"The links that users wish to share privately with people they know and trust should not be posted on a publicly accessible website," Bonny told The Verge.

Danny Sullivan, Google's public search liaison, tweeted: "Search engines like Google & others list pages from the open web. That's what's happening here. It's no different than any case where a site allows URLs to be publicly listed. We do offer tools allowing sites to block content being listed in our results."

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Agencies
July 25,2020

In a study conducted in 117 countries, researchers have found that the world is experiencing the most dramatic reduction in the seismic noise (the hum of vibrations in the planet's crust) in recorded history due to global COVID-19 lockdowns.

Measured by instruments called seismometers, seismic noise is caused by vibrations within the Earth, which travel like waves and the waves can be triggered by earthquakes, volcanoes, and bombs - but also by daily human activity like travel and industry.

This quiet period was likely caused by the total global effect of social distancing measures, closure of services and industry, and drops in tourism and travel, the study published in the journal Science, reported.

The new research, led by the Royal Observatory of Belgium and five other institutions around the world including Imperial College London (ICL), showed that the dampening of 'seismic noise' caused by humans was more pronounced in more densely populated areas.

"Our study uniquely highlights just how much human activities impact the solid Earth, and could let us see more clearly than ever what differentiates human and natural noise," said study co-author Stephen Hicks from ICL in the UK.

For the findings, the research team looked at seismic data from a global network of 268 seismic stations in 117 countries and found significant noise reductions compared to before any lockdown at 185 of those stations.

Researchers tracked the 'wave' of quietening between March and May as worldwide lockdown measures took hold.

The largest drops in vibrations were seen in the most densely populated areas, like Singapore and New York City, but drops were also seen in remote areas like Germany's the Black Forest and Rundu in Namibia.

Citizen-owned seismometers, which tend to measure more localised noise, noted large drops around universities and schools around Cornwall, UK and Boston, US - a drop in noise 20 per cent larger than seen during school holidays.

The findings showed that countries like Barbados, where lockdown coincided with the tourist season, saw a 50 per cent decrease in noise.

"The changes have also given us the opportunity to listen in to the Earth's natural vibrations without the distortions of human input," the study authors wrote.

Earlier in April, a study published in the journal Nature, reported at least a 30 per cent reduction in that amount of ambient human noise since lockdown began in Belgium.

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July 2,2020

Leiden, Jul 2: Astronomers have discovered a luminous galaxy caught in the act of reionizing its surrounding gas only 800 million years after the Big Bang.

The research, led by Romain Meyer, PhD student at UCL in London, UK, has been presented at the virtual annual meeting of the European Astronomical Society (EAS).

Studying the first galaxies that formed 13 billion years ago is essential to understanding our cosmic origins. One of the current hot topics in extragalactic astronomy is 'cosmic reionization,' the process in which the intergalactic gas was ionized (atoms stripped of their electrons).

Cosmic reionization is similar to an unsolved murder: We have clear evidence for it, but who did it, how and when? We now have strong evidence that hydrogen reionization was completed about 13 billion years ago, in the first billion years of the universe, with bubbles of ionized gas slowly growing and overlapping.

The objects capable of creating such ionized hydrogen bubbles have however remained mysterious until now: the discovery of a luminous galaxy in which 60-100 percent of ionizing photons escape, is likely responsible for ionizing its local bubble. This suggests the case is closer to being solved.

The two main suspects for cosmic reionization are usually 1) a population of numerous faint galaxies leaking ~10 percent of their energetic photons, and 2) an 'oligarchy' of luminous galaxies with a much larger percentage (>50 percent) of photons escaping each galaxy.

In either case, these first galaxies were very different from those today: galaxies in the local universe are very inefficient leakers, with only <2-3 percent of ionizing photons escaping their host. To understand which galaxies governed cosmic reionization, astronomers must measure the so-called escape fractions of galaxies in the reionization era.

The detection of light from excited hydrogen atoms (the so-called Lyman-alpha line) can be used to infer the fraction of escaping photons. On the one hand, such detections are rare because reionization-era galaxies are surrounded by neutral gas which absorbs that signature hydrogen emission.

On the other hand, if this hydrogen signal is detected it represents a 'smoking gun' for a large ionized bubble, meaning we have caught a galaxy reionizing its surroundings. The size of the bubble and the galaxy's luminosity determines whether it is solely responsible for creating this ionized bubble or if unseen accomplices are necessary.

The discovery of a luminous galaxy 800 million years after the Big Bang supports the scenario where an 'oligarchy' of bright leakers emits most of the ionizing photons.

"It is the first time we can point to an object responsible for creating an ionized bubble, without the need for a contribution from unseen galaxies.

Additional observations with the upcoming James Webb Space Telescope will enable us to study further what is likely one of the best suspects for the unsolved case of cosmic reionization," said Meyer.

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