Biology, asked by ashokbasnet2395, 1 year ago

What is summer stratification. Explain.

Answers

Answered by Anonymous
15

HLO MATE HERE IS UR ANSWER

. SUMMER STRATIFICATION

. During summer , in temparate lakes , the formation of three layers of water is called summer stratification.

. During summer the temperature of lakes rises upto 25degreesC . Hence ,periodic circulation of water takes place.

. Then three types of layers are formed

.Epilimnion

. Thermocline

. Hypolimnion.

. EPILIMNION

. The upper ,warm oxygen rich layer of water having a temperature range of 21degreeC _ 25 degree C is called epilimnion.

. THERMOCLINE

. The below layer of epilimnion is called thermocline or metalimnion.Here , the temperature decreases at the rate of 1 degree C per meter.

. HYPOLIMNION

. The bottom layer where the temperature is about 7 degree C is called Hypolimnion.

. In this layer , the water is stagnant ,relatively cool , nutrient rich , low oxygen content due to absence of photosynthetic activity.

. SUMMER STRATIFICATION IS FOLLOWED BY AUTUMN OVERTURN

. During Autumn the temperature of surface water falls to 4 degree C.

. The water becomes heavy when the temperature is at 4 degree C . It sinks to the bottom . The bottom water comes to the surface with many nutrients. This circulation is called autumn (fall) over turn.

. Due to autumn overturn uniform temperature and uniform distribution of nutrients and oxygen in the lakes take place.

Answered by NainaRamroop
0

Summer Stratification is the phenomenon that occurs when a water body like a lake, separates into two different layers water.

  • During the summer season, temperature of the environment rises and thus the temperature of the lake rises too,
  • The warmer distribution of the lake water rises to the top due to decrease in it's density. This upper layer is known as the "epilimnion".
  • Epilimnion is concentrated with oxygen and it's temperature range is 21°C to 25°C.
  • The colder layer at the bottom of the lake is called the "hypolimnion".
  • This layer is not rich in oxygen and it's temperature ranges from 6°C to 7°C .
  • Between the epilimnion and hypolimnion a zone called the "Thermocline" exists. In this layer the water temperature gradually decreases at the rate of 1°C per meter.

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