Environment and Ecology Part 1.5

Lesson 5 of 18 • 1028 upvotes • 13:51mins

Roman Saini

Another awesome video in the Environment and Ecology series by Roman Saini. Here, he deals the structure and function of ecosystem: Stratification – meaning layers: 1.Trees, 2.Shrubs, 3.Herbs and Grasses, components of ecosystem: productivity, decomposition, energy flow, nutrient cycling, Pond ecosytem: Planktons – Passive drifter, Autotrophs – Phytoplanktons, Zooplanktons - Nektons, Benthos, Decomposers – Fungi, Bacteria, Flagellates, Functions of Pond ecosytem, Productivity, Biomass: Species, Community, Standing crop, Dry weight, Primary production, Primary productivity i.e Gross primary, Net primary, Secondary productivity, factors influencing Primary productivity, Annual net primary productivity of biosphere: Abyssal, pelagic, benthic, profundal, hadalic, aphotic, Limiting factors – NOPL: Nitrogen – Oceans, Phosphorus – Lakes, Decomposition: rich in nitrogen, water soluble substances, warm, moist, airy, 5 steps: fragmentation, leaching, catabolism, humification, mineralisation, Detritivores - Farmer’s friend Still if you are left with any doubt, ask at his facebook page http://facebook.com/romansaini.official Video by Unacademy for IAS Preparation. How to prepare for IAS exam, Best IAS Coaching, IAS Civil Services Syllabus, Study Material for IAS Exam, IAS Civil Services Exam, UPSC Preparation, Tips for IAS, Material for IAS Preparation, UPSC Exam Material, IAS How to prepare, Other good resources: Mrunal and Clearias , IAS preparation tips, How to prepare for IAS 2015