Butterfly diversity documentation in Assam

3 entries over 50 days, from 5 July 2026 to 23 August 2026.

01
5 July

Assam butterfly diversity documentation

The Assam Forest Department released a booklet documenting butterfly diversity in the Bodoland Territorial Region (BTR).
The BTR forest landscape covers 3,653 sq. km. and consists of tropical evergreen, semi-evergreen, moist mixed-deciduous forests, and alluvial grasslands.
The region serves as a confluence point for the Indo-Malayan and Indo-Gangetic biogeographic zones.
BTR hosts 346 of Assam’s 620 recorded butterfly species, making it one of the richest butterfly habitats in Northeast India.
It is the only ecological corridor in the Northeast where butterfly species from the Eastern Himalayas, Indo-Malayan region, and Indo-Gangetic plains coexist.
Rare and endemic species recorded include the yellow-crested spangle (Papilio elephenor) and Swinhoe’s flat (Celaenorrhinus zea).
The landscape supports cultural heritage, such as the Bodo community's 'Bagurumba' dance, which is inspired by butterfly mud-puddling behavior.

02
19 July

Study conducted in Raimona National Park, Assam (422 sq. km), between 2022 and 2025 by Bodoland University.
Research documented 220 butterfly species, 56 larval host plants, and 41 nectar plants.
Invasive species Lantana camara, Chromolaena odorata, and Ziziphus mauritiana act as critical nectar sources for butterflies.
Lantana camara attracts over 30 butterfly species (April–October); Chromolaena odorata supports 24 species (December–February).
Invasive plants provide nectar during periods of native wildflower scarcity, sustaining butterfly populations.
Lantana camara's multi-coloured inflorescences and continuous nectar production serve as strong visual cues for foraging.
Several invasive species (e.g., Ricinus communis, Mikania micrantha, Ageratum conyzoides) also function as larval host plants.
Researchers suggest maintaining small, managed patches of these invasive species in protected landscapes to ensure continuous nectar supply.

03
23 August

Project initiated in Khalingduar Reserve Forest, Udalguri district, Assam, to restore elephant habitat.
Targeted invasive alien plants (IAPs) include Lantana camara, Chromolaena odorata, and Mikania micrantha.
IAPs compete with native vegetation for light, space, moisture, and nutrients, reducing forage for herbivores.
Methodology involves manual uprooting of IAPs, seed-ball-assisted regeneration, and biomass conversion.
Biomass is converted into biochar, a porous substance produced by heating organic waste in low-oxygen environments.
Biochar acts as a stable carbon sink and improves soil properties like water and nutrient retention.
Project supported by the International Elephant Foundation and implemented by Aaranyak.
Periodic monitoring is planned to prevent IAP re-emergence and ensure native plant recovery.

Newest first. A story that ran for 50 days is exactly the kind the mains paper asks about as one question.

Discuss the ecological challenges posed by invasive alien species in forest ecosystems and evaluate the potential of biochar production as a sustainable management strategy. 150 words · 23 August
Habitat fragmentation and the proliferation of invasive species are significant threats to megafauna in India. Examine the strategies required for effective habitat restoration in protected areas, citing the role of community-based conservation models. 250 words · 23 August
The ecological role of invasive plant species is often viewed through the lens of biodiversity loss; however, recent studies suggest a more nuanced interaction with native fauna. Discuss in the context of butterfly conservation in protected areas. 150 words · 19 July
Exotic invasive species are typically excluded from forest management practices due to their negative impact on native ecosystems. Critically examine whether a shift toward 'managed patches' of invasive flora could serve as a pragmatic strategy for biodiversity conservation in fragmented landscapes. 250 words · 19 July
The Bodoland Territorial Region (BTR) acts as a unique ecological corridor for butterfly diversity. Discuss the significance of such biodiversity hotspots in the context of the Northeast's biogeographic convergence and the role of local communities in conservation. 150 words · 5 July

250words.in · https://250words.in/stories/butterfly-diversity-documentation-in-assam