UPSC CSE Ecology and Environment Index

Ecology and Environment – Index

🌿 Ecology & Environment Self Learning

GS III

Intro to Ecology

  • Meaning and scope of ecology
  • Biotic and abiotic components
  • Levels of ecological organization
  • Ecology in policy and governance
  • Environmental degradation trends
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Ecological Principles

  • Law of tolerance & Law of minimum
  • Limiting factors concept
  • Ecological niche vs Habitat
  • Carrying capacity
  • Ecological balance
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Ecosystem Structure

  • Producers, consumers, decomposers
  • Trophic levels
  • Food chain and food web
  • Ecological pyramids
  • Standing crop and standing state
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Terrestrial Ecosystems

  • Forest and Grassland systems
  • Desert and Tundra ecosystems
  • Mountain ecosystems
  • Human-modified ecosystems
  • Indian terrestrial ecosystems
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Aquatic Ecosystems

  • Freshwater (Lentic & Lotic)
  • Wetland ecosystems
  • Marine & Estuaries
  • Mangroves and Coral reefs
  • Indian aquatic ecosystems
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Ecosystem Functioning

  • Energy flow & Ecological efficiency
  • Primary & Secondary productivity
  • Decomposition process
  • Ecological succession
  • Homeostasis
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Biogeochemical Cycles

  • Water and Carbon cycles
  • Nitrogen and Phosphorus cycles
  • Sulphur cycle
  • Human impact on cycles
  • Climate linkages
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Biological Diversity

  • Genetic, Species & Ecosystem levels
  • Biodiversity patterns
  • Latitudinal gradient
  • India as a megadiverse country
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Biodiversity Hotspots

  • Concept and criteria
  • Global vs Indian hotspots
  • Endemism
  • Threats to hotspots
  • Role in climate resilience
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Threats to Biodiversity

  • Habitat loss and fragmentation
  • Invasive alien species
  • Overexploitation & Pollution
  • Climate change impacts
  • Man-animal conflict
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Conservation

  • In-situ and Ex-situ conservation
  • Protected areas & Biosphere reserves
  • Community-based conservation
  • Indigenous knowledge
  • Conservation challenges in India
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EIA Framework

  • EIA process and stages
  • Screening, scoping, appraisal
  • Public hearing and consultation
  • Legal framework in India
  • Limitations and reforms
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Climate Change

  • Greenhouse effect and gases
  • Global warming impacts
  • Agriculture & Coastal vulnerability
  • Biodiversity loss
  • Climate vulnerability of India
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Laws & Institutions

  • Environment & Wildlife Acts
  • Paris Agreement & Montreal Protocol
  • Ramsar Convention
  • MoEFCC, NGT, and IPCC
  • UNEP, IUCN, and WWF
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Sustainable Development

  • Inter-generational equity
  • SDGs and India’s initiatives
  • Chipko & Narmada Bachao Andolan
  • Silent Valley & Bishnoi movements
  • Role of civil society
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