effect on marine life in river yamuna
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The Yamuna river, often called Delhi’s lifeline, is gasping for life. The 22-km stretch along the national capital has virtually no aquatic life - thanks to over 20 drains that pour untreated sewage and other waste into the river.
It is not that the Yamuna River has no aquatic life at all. Upstream from Wazirabad, before the river enters Delhi, it is home to turtles, different species of fish, crocodiles and an abundance of aquatic plants and phytoplankton. But as it enters Delhi, the river starts to die.
Noted ecologist C.R. Babu, who is helping the Delhi government in developing a riverfront for the Yamuna, says that the river is in fact “ecologically dead” in the 22 km urban stretch - between the Wazirabad and Okhla barrages.
“Downstream from Wazirabad, the river is ecologically dead as it has no aquatic life. Low levels of dissolved oxygen (DO) and a very high degree of pollution are the reasons that killed the river,” Babu said.
A retired Delhi University professor, Babu says that sewage from 21 nullahs (drains) flow into the river, polluting it to a level that is enough to kill the components essential for maintaining aquatic life.
Agents like phytoplankton are responsible for sustaining the aquatic food web by creating organic compounds from carbon dioxide dissolved in the water.
It is not that the Yamuna River has no aquatic life at all. Upstream from Wazirabad, before the river enters Delhi, it is home to turtles, different species of fish, crocodiles and an abundance of aquatic plants and phytoplankton. But as it enters Delhi, the river starts to die.
Noted ecologist C.R. Babu, who is helping the Delhi government in developing a riverfront for the Yamuna, says that the river is in fact “ecologically dead” in the 22 km urban stretch - between the Wazirabad and Okhla barrages.
“Downstream from Wazirabad, the river is ecologically dead as it has no aquatic life. Low levels of dissolved oxygen (DO) and a very high degree of pollution are the reasons that killed the river,” Babu said.
A retired Delhi University professor, Babu says that sewage from 21 nullahs (drains) flow into the river, polluting it to a level that is enough to kill the components essential for maintaining aquatic life.
Agents like phytoplankton are responsible for sustaining the aquatic food web by creating organic compounds from carbon dioxide dissolved in the water.
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