A three-day survey has begun across seven biodiversity parks in Delhi to study the population of dragonflies and damselflies. Conducted annually, the survey helps monitor the health of wetlands and ecosystems. Dragonflies, which feed on mosquitoes and other pests, are vital indicators of environmental balance and public health.
They are insects dependent on wetlands and perennial water bodies for breeding and survival.
They act as predators feeding on mosquitoes, flies, and other pests, thereby controlling vector-borne diseases like dengue.
Students and experts count different species, check habitats, and monitor their presence across Delhi’s biodiversity parks.
Habitat loss due to urbanisation, pollution, invasive species, and climate change has reduced their numbers worldwide.
According to the IUCN, 16% of dragonfly species are at risk of extinction due to rapid wetland degradation.
The restoration of Kamla Nehru Ridge has shown how ecological revival can increase dragonfly numbers by improving water bodies, restoring natural drainage, and creating shaded pools. This highlights the link between conservation and healthier urban ecosystems.
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