Delhi records slight dip in dragonfly, damselfly numbers; two new sightings

…wetlands for months or even years. These nymphs are territorial, predatory, and require clean, stable aquatic environments.” Also Read: Shahdara, Barapullah among most polluted drains discharging into Yamuna: Report “ Therefore, clean and functional wetland ecosystems alone can sustain their population, which in turn helps in mosquito control in surrounding areas, and restored DDA Biodiversity Parks provide such pristine ecosystems ,” he added. Experts and college students affiliated with the University of Delhi participated in the survey, which was carried out across the DDA’s seven biodiversity parks: Yamuna, Aravalli, Neela Hauz, Tilpath…

…Valley, Kamla Nehru Ridge, Tughlaqabad and Kalindi. Speaking about the survey outcomes, entomologist Mohd. Faisal said that there had been a minor dip in the diversity as well as density of dragonflies, adding, “ Delhi has seen erratic rains and adverse weather conditions with an increase in dry areas and a lack of formation of water pools in biodiversity parks. ” “This year, a new species seen in DDA Aravalli Biodiversity Park was the Yellow-tailed Ashy Skimmer (Potamarcha congener). Last year, it was observed for the first time in Yamuna Biodiversity Park, so its range has…