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New Dragonfly Species Spotted in Delhi Parks
21 Sep
Summary
- Dragonfly and damselfly populations in Delhi parks saw a marginal dip.
- A new species, Yellow-tailed Ashy Skimmer, was observed.
- Erratic rains and dry conditions are cited as reasons for the decline.
A recent survey of dragonflies and damselflies across seven Delhi biodiversity parks revealed a marginal decrease in both population density and species diversity compared to the previous year. Officials attribute this decline to erratic rainfall patterns and a rise in dry areas within the parks. Despite this trend, exciting new sightings were recorded. The Yellow-tailed Ashy Skimmer was observed in the DDA Aravalli Biodiversity Park, and the Blue Grass Dart made its first appearance at the Yamuna Biodiversity Park.
Overall, 11,154 individuals were counted this year, down from 13,253 last year. While some parks saw a dip in species diversity, Yamuna Biodiversity Park recorded an increase, noting 23 species compared to 21 the prior year. Experts emphasize that dragonflies, with their complex life cycles and habitat needs, serve as indicators of a healthy and functioning wetland ecosystem, contributing to natural mosquito control.
The survey, conducted annually since 2022, involved experts and students from the University of Delhi. The seven parks included in the survey are Yamuna, Aravalli, Neela Hauz, Tilpath Valley, Kamla Nehru Ridge, Tughlaqabad, and Kalindi. These parks, managed by the DDA, provide crucial wetland habitats that support diverse insect populations.
