Dragonfly survey in Delhi: Increase in total number, dip in species

Wandering Glider (right) and Ditch Jewel (left). (Photo: Wikimedia commons)

Yamuna Biodiversity Park recorded 21 species, the aforesaid arsenic the erstwhile year. Aravalli Biodiversity Park and Tughlaqabad Biodiversity Park saw a marginal diminution arsenic it was 10 and 12 respectively, compared to erstwhile years’ counts, 11 and 14, respectively. There was a important diminution successful taxon number from 13 to lone 5 successful Neela Hauz. Kalindi Biodiversity Park saw an accrued fig of species, with 14 recorded this year, compared to lone 8 past year. The taxon number was the aforesaid successful Kamla Nehru Ridge, arsenic it was 25 successful some years. Tilpath Valley saw a flimsy summation successful taxon number arsenic 7 taxon were recorded from the erstwhile fig of five.

Migrant hawker dragonfly taxon (Aeshna mixta) antheral connected Weigela Florida Brigela Moulin Rouge. (Photo: Wikimedia commons)

Dragonflies and damselflies thrive successful wetland environments, and the prolonged rainfall has contributed to the enactment of ephemeral wetlands and enhanced the availability of aquatic habitats. Dr Faiyaz Khudsar, scientist-in-charge astatine Yamuna Biodiversity Park, pointed retired that prolonged rainfall has contributed to the enactment of ephemeral wetlands and enhanced the availability of aquatic habitats.

The insects are indispensable indicators of biology wellness owed to their reliance connected clean, well-oxygenated water. Their sensitivity to h2o contamination makes them important bioindicators, reflecting the wide prime of aquatic ecosystems. Dr Faiyaz said, “The accrued number is simply a large sign…dragonflies enactment arsenic a earthy pest control.”

The statement, which explained the benefits of the finding, said, “The conditions person not lone supported higher reproduction rates but besides provided ample resources for nymphs and adults, resulting successful higher colonisation size and maintaining their indispensable roles arsenic predators of mosquito larvae… Amid rising dengue cases successful Delhi, the density of dragonflies not lone gives immoderate alleviation but besides highlights the value of conservation of these tiny creatures for quality sustenance and survival.”