Dear Students Is video Me hum SOL DU / NCWEB / DU Regular ka new Course dekhne wale hai.
aaj hum B.A Hons. / B.A Programme ka subject environmental studies AEC ( AEC )
ki UNIT 2 karne wale hai .

unit 2 Ecosystems Components Types Nutrient cycles

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Topics Discussed --
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1) Definition and concept of Ecosystem

2) Structure of ecosystem (biotic and abiotic components) Functions of Ecosystem:
Physical (energy flow) Biological (food chains food web ecological succession) and
Biogeochemical (nutrient cycling) processes.

Concepts of productivity ecological
pyramids and homeostasis

3) Types of Ecosystems: Tundra, Forest Grassland Desert Aquatic (ponds streams lakes
rivers oceans estuaries)

importance and threats with relevant examples from India

4) Ecosystem services (Provisioning Regulating Cultural and Supporting)
Ecosystem preservation and conservation strategies : Basics of Ecosystem restoration

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