Evaluate the role of institutions like the Birbal Sahni Institute of Palaeosciences in advancing India's understanding of paleoclimate and biodiversity evolution.

Q. Evaluate the role of institutions like the Birbal Sahni Institute of Palaeosciences in advancing India's understanding of paleoclimate and biodiversity evolution. (15 marks, 250-350 words)

The Birbal Sahni Institute of Palaeosciences (BSIP), Lucknow, an autonomous institute under the Department of Science and Technology, reconstructs India's deep-time climate and vegetation history from fossil archives [1]. Its recent work confirms that such institutions are indispensable to understanding biodiversity evolution, though their reach remains institutionally narrow.

Contribution to paleoclimate reconstruction - BSIP studies link fossil evidence to the Himalayan orogeny: leaf fossils show that as tectonic uplift altered temperature and rainfall, warm-humid northeast India turned inhospitable to several tropical lineages [2]. - Work on Nagaland fossils and on Kashmir's changing weather roughly four million years ago builds a long-run baseline of monsoon and climate variability that instrumental records cannot supply [2].

Contribution to biodiversity evolution - Four fossil leaves from the Tikak Parbat Formation, Makum Coalfield (Assam), identified as Pandanaceae, establish that the fragrant kevda/kewra has survived in India for about 24 million years — published in Geobios [1]. - The same coalfield yielded the world's oldest fossil record of Nothopegia, a genus now confined to the Western Ghats, showing migration-and-refuge dynamics across geological time [2]. - Together these findings position India, especially the northeast, as a refugium for ancient tropical lineages, giving conservation a deep-time rationale beyond present-day species counts [1][2].

Limitations - Findings are site-concentrated in a few fossil-rich basins; large parts of peninsular and Himalayan India remain under-sampled. - Palaeoscience outputs are weakly integrated into policy — biodiversity governance sits with MoEFCC while the research capacity sits under DST, limiting translation into conservation planning. - Fossil-bearing strata in working coalfields face extraction pressure, and public awareness of palaeoheritage is thin.

BSIP's work demonstrates that palaeoscience is not antiquarian curiosity but an evidence base for anticipating how ecosystems respond to warming. Strengthening DST–MoEFCC convergence, protecting fossil sites, and feeding deep-time data into climate-adaptation and biodiversity-hotspot planning would let such institutions serve India's Sustainable Development Goal commitments on climate action and life on land.

(~320 words)

Sources: 1. PIB, Ministry of Science & Technology — release on the kewra (Pandanaceae) fossil discovery, 15 July 2026 — BSIP's DST status; 24-million-year-old kevda fossil leaves from the Tikak Parbat Formation, Makum Coalfield, Assam; publication in Geobios; India as refuge for ancient tropical flora 2. Department of Science & Technology — "A 24-million-year-old secret unearthed by the discovery of fossil leaves… in the Makum Coalfield of Assam" — world's oldest Nothopegia fossil record; Himalayan uplift driving climate change and species loss in northeast India; Western Ghats refuge