Oxygen depletion often leads to complete deoxygenation or anoxia in the deep layers of the lake or reservoirs also because oxygen poorly dissolves in water
Oxygen depletion often leads to complete deoxygenation or anoxia in the deep layers of the lake or reservoirs also because oxygen poorly dissolves in water
In shallow lakes and where plant production is high deoxygenation of the sediment and water occur frequently too black sediment, Photo 3)
In shallow lakes and where plant production is high, deoxygenation of the sediment and water occur frequently too (black sediment, Photo 3)
Such conditions kill fish and invertebrates(Photo 4
Such conditions kill fish and invertebrates (Photo 4)
Moreover, ammonia and hydrogen sulfide originated from bacterial activity can be eleased from sediments under conditions of anoxia and their concentrations can rise to levels which adversely affect plants and animals as they act as poisonous gases
◼ Moreover, ammonia and hydrogen sulfide originated from bacterial activity can be released from sediments under conditions of anoxia, and their concentrations can rise to levels which adversely affect plants and animals as they act as poisonous gases
Some particular type of algae, which grow in highly nutrient enriched lakes and reservoirs release in the water very powerful toxins which are poisonous at very low concentrations
◼ Some particular type of algae, which grow in highly nutrient enriched lakes and reservoirs, release in the water very powerful toxins which are poisonous at very low concentrations