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Only six out of India’s 22 river basins are climate resilient: IIT-Guwahati Study

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Brahmaputra River

By Umashankar Mishra

Only 6 river basins including Brahmaputra, Indus, Pennar were able to sustain their primary productivity by increasing water use efficiency during drought

New Delhi: Climate change remains a matter of concern globally. A new study by Indian researchers has shown that only 6 out of 22 river basins in the country have the potential to cope with the threat of climate change, particularly droughts.

This means nearly two-thirds of India’s terrestrial ecosystems are not resilient to drought. Central India has been found to be the most vulnerable to climate change. Parts of northwestern, northeastern and southern India appear to be resilient to cope with droughts while the rest of the country is non-resilient, says the study done by researchers at the Indian Institute of Technology, Guwahati.

“We evaluated the ecosystem resilience in terms of the capability of an ecosystem to maintain its productivity during hydroclimatic disturbances,” lead researcher Dr Manish Goyal said while speaking to India Science Wire.

“Only six river basins- Brahmaputra, Indus, Pennar, west flowing rivers of Kutch and Saurashtra including Luni basin, east flowing rivers between Krishna and Pennar basins and east flowing rivers between Pennar and Cauvery basin were able to sustain their primary productivity by increasing the water use efficiency under driest years,” Goyal said.

Researchers compared response of river basin systems to water stress at different levels such as river basins, land covers, and climate types. They have developed an ecosystem resilience map of India using high resolution remote sensing satellite data for 22 main river basins. The data productivity of a river basin and evapo-transpiration was obtained from NASA’s MODIS satellite and studied along with rainfall data from the India Meteorological Department.

Drastic reduction in water use efficiency under driest conditions was observed for some basins, which highlights their inability to cope with climate change. Low primary productivity can distort the balance of ecosystem and its resistance to fight drought. “The inability of ecosystems at different scales to tolerate water-limited conditions may pose a serious challenge in terms of crop production and food security,” Goyal added.

Only two types of forests – evergreen needle-leaf forest and evergreen broadleaf forest – were found to be resilient at land-cover scale. The presence of such forests in the Brahmaputra basin could be the reason for its resilience. However, forests in some parts of Western Ghats and central India were found more vulnerable to climate change. Ganga basin, the most populous and agriculturally important basin, was also found slightly non-resilient.

“It is clear that forests have higher resilience to withstand the climatic disturbances. The deforestation activities, in the name of economic development and expansion of agriculture, will result in making country more vulnerable to climate change”, researchers said.

The research team also included Ashutosh Sharma. The  study has appeared in journal Global Change Biology.

(This article is from an auto-generated syndicated feed provided by the India Science Wire)

India News

Congress, BJP attack Bhagwant Mann over remarks on Punjab blasts

Congress and BJP have jointly criticised Punjab CM Bhagwant Mann after he linked recent blasts near defence sites to political motives, triggering a controversy.

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Bhagwant Mann

A political row has erupted in Punjab after Chief Minister Bhagwant Mann linked recent blast incidents to political motives, drawing sharp criticism from both the Congress and the Bharatiya Janata Party (BJP).

The controversy follows two low-intensity explosions reported within a short span of time — one near the Border Security Force (BSF) headquarters in Jalandhar and another close to an army cantonment area in Amritsar. The incidents raised concerns over security, particularly given the sensitive nature of the locations.

In response, Mann suggested that the blasts could be part of a larger political strategy. His remarks triggered a strong backlash, with opposition parties accusing him of politicising a serious security issue.

Leaders from the Congress criticised the Chief Minister’s statement, calling it inappropriate and alleging that such comments undermine the gravity of the situation. They stressed that matters related to national security should be handled with caution and responsibility.

The BJP also joined the criticism, questioning the basis of Mann’s claims and urging the state government to focus on investigation and law enforcement instead of making political allegations.

The developments have led to an unusual moment where both Congress and BJP appear aligned in their criticism of the Aam Aadmi Party-led government in the state.

Meanwhile, the blasts themselves have intensified concerns over safety in border regions, with authorities continuing their investigation into the incidents. No casualties were reported, but the proximity to defence establishments has made the issue particularly sensitive.

The episode has further escalated political tensions in the state, with security and accountability emerging as key points of debate.

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Himanta Biswa Sarma resigns as Assam chief minister, oath ceremony likely after May 11

Himanta Biswa Sarma resigns as Assam Chief Minister after BJP-led NDA’s victory. He will continue as caretaker CM until the new government is sworn in after May 11.

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Himanta sharma

Assam Chief Minister Himanta Biswa Sarma resigned from his post on Wednesday, paving the way for the formation of a new government after the BJP-led NDA secured a decisive victory in the 2026 Assembly elections.

Sarma submitted his resignation to Governor Lakshman Prasad Acharya at Lok Bhawan in Guwahati. The Governor accepted the resignation and asked him to continue as the caretaker Chief Minister until the new government takes charge.

The resignation comes after the NDA’s strong electoral performance, where the alliance won a clear majority in the 126-member Assembly, ensuring its return to power for another term.

Oath ceremony expected after May 11

Speaking to reporters after submitting his resignation, Sarma said the swearing-in ceremony for the new government is likely to be held after May 11.

He indicated that Prime Minister Narendra Modi has been invited to attend the ceremony but is unavailable until May 11, which has influenced the tentative schedule.

Decision on next chief minister soon

Sources suggest that central observers, including senior BJP leaders, are expected to arrive shortly to oversee the selection of the legislature party leader. The newly elected MLAs will then decide on the next Chief Minister.

Despite the formal resignation, party sources indicate that Sarma is likely to continue in the role for another term, given the BJP’s strong mandate in the state.

The move marks the beginning of the government formation process in Assam following the election results declared earlier this week.

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Rahul Gandhi and Vijay alliance took shape through backchannel talks, early signals from Congress leaders

Congress outreach and political calculations led to Rahul Gandhi and Vijay coming together after the Tamil Nadu 2026 election results.

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The coming together of Rahul Gandhi and actor-politician Vijay in Tamil Nadu after the 2026 Assembly elections was not sudden, but the result of behind-the-scenes political manoeuvring and early signals within the Congress.

According to media reports, some leaders in the Tamil Nadu Congress had already sensed the scale of Vijay’s surge during the campaign, anticipating what was later described as a “wave” in favour of his party.

After the results, where Vijay’s Tamilaga Vettri Kazhagam (TVK) emerged as the single largest party but fell short of a majority, communication channels between the Congress leadership and Vijay quickly became active.

A key moment in this evolving political equation was a phone call from Rahul Gandhi to Vijay, congratulating him on the party’s strong performance. The conversation was seen as more than a courtesy, signalling the possibility of cooperation at a time when government formation required additional support.

Reports indicate that discussions within Congress weighed the political benefits of supporting Vijay, especially given the shifting dynamics in the state where traditional dominance by major Dravidian parties has been challenged.

With TVK needing allies to cross the majority mark, Congress emerged as a potential partner, leading to a broader political realignment in the state. This development also triggered tensions within opposition alliances, highlighting the strategic importance of the decision.

The evolving partnership reflects a mix of electoral pragmatism and changing voter sentiment, particularly the growing influence of younger voters, which leaders acknowledged as a key factor in the election outcome.

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