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IISc Study on Montane Birds


Why is it in the news?

  • The Indian Institute of Science (IISc) in Bengaluru conducted a study focusing on understanding the consequences of logging and climate change on montane birds.

About the Study

  • The study was carried out in the Eaglenest Wildlife Sanctuary in Arunachal Pradesh, known for its diverse bird species and rich biodiversity.
  • Researchers collected data over a period of 10 years from the Eaglenest Wildlife Sanctuary, utilizing mist netting and bird ringing techniques.
  • The study examined the effects of both forest logging and climate change on bird communities, with a specific focus on the understorey bird community, which comprises birds beneath the main canopy of a forest.

Key Findings of the Study

  • Identified forest loss and climate change as major threats to the tropical montane forest ecosystem, particularly in mountainous regions.
  • Observed shifts in elevational distribution of many bird species, attributed to rising temperatures.
  • Logging was found to result in the loss of large-bodied, old, growth-dependent bird species, leading to an overall decrease in biodiversity.
  • Significantly detrimental effects on understorey insectivores, a group of birds confined to specific niches within the ecosystem.
  • Logged forests experienced reduced densities of foliage-dwelling insects, which are a crucial food source for birds. This reduction in available resources negatively impacted bird communities.
  • Noted a phenomenon where many bird species shifted to higher elevations in response to climate change, seeking more favourable conditions.
  • Emphasized the critical importance of preserving primary (undisturbed) forests to mitigate the adverse impacts of climate change on bird communities.
Eagle Nest Wildlife Sanctuary

路聽聽聽聽聽聽 Situated in Arunachal Pradesh.

路聽聽聽聽聽聽 Part of the Eastern Himalayas biodiversity hotspot.

路聽聽聽聽聽聽 Adjacent to Sessa Orchid Sanctuary and Pakhui Tiger Reserve.

路聽聽聽聽聽聽 Recognized as a top global birding destination.

路聽聽聽聽聽聽 Characterized by dense bamboo strands and patches of broadleaved evergreen forest, covering a large altitudinal range.

路聽聽聽聽聽聽 Home to diverse amphibians, snakes, lizards, and mammal species, including endangered species like the Bugun Liocichla bird.

路聽聽聽聽聽聽 Records over 160 species of butterflies.

路聽聽聽聽聽聽 The sanctuary is inhabited by two tribes, Bugun and Sherdukpen, adding to its cultural significance.

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