GS 3: Environment & EcologyGS 1: Indian GeographyPrelims

Dragonfly Down, Pg18

Dragonfly populations in Western Ghats plummet 35% due to pollution, habitat loss, and climate change impacting delicate ecosystems.

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Key Highlights:

  • A study between 2021-2023 in the Western Ghats revealed a 35% decline in dragonfly species.
  • Of 144 species surveyed, 40 were endemic, with several now missing.
  • Dragonflies, ancient insects, have existed for 250-300 million years and are efficient predators.
  • August is considered Dragonfly month in India, with about 500 species found nationwide.

Detailed Insights:

  • Dragonflies, as nymphs, spend up to five years underwater, preying on small fish before transforming into aerial hunters.
  • Endemic species are particularly vulnerable to habitat degradation, signaling broader environmental distress.
  • The decline is attributed to pollution, infrastructure development, climate change, and irresponsible tourism.
  • Dragonflies play a crucial role in controlling insect populations, and their disappearance indicates ecosystem imbalance.
  • Conservation efforts and increased public awareness are needed to protect dragonfly habitats and prevent further decline.

Key Concepts Involved:

  • Endemic Species: Species unique to a defined geographic location.
  • Biodiversity Hotspot: Region with high levels of endemic species facing significant habitat loss.
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