Zeluno Environment & Ecology

I

Part I

Ecology & Ecosystem Dynamics

The foundation of all environmental science. Builds the scientific framework required to understand every complex issue that follows — from nutrient cycling to climate change.

Chapter 01 +4 Marks Est.

II

Part II

Biodiversity & Conservation

India's unique biological wealth and the strategies to protect it — from the biogeography of the subcontinent to flagship species conservation projects.

Chapter 04 +5 Marks Est.

Biodiversity Concepts

Genetic, Species & Ecosystem Diversity

Alpha, Beta & Gamma Diversity Indices

Keystone, Flagship, Umbrella & Indicator Species

Invasive Alien Species (IAS) Framework

Open Chapter →

Chapter 05 +8 Marks Est.

Indian Biodiversity & Protected Areas

India's Biogeographical Classification

National Parks vs. Wildlife Sanctuaries

Biosphere Reserves & MAB Programme

Conservation Reserves & Sacred Groves

Open Chapter →

Chapter 06 +12 Marks Est.

Species Conservation Projects

Project Tiger: Corridors & Census 2022–23

Project Elephant: HEC Mitigation

Snow Leopard, Vultures, Dugong, Dolphin

IUCN Red List 2026 Updates

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III

Part III

Climate Change & Global Mitigation

Heavily updated for the 2026 exam cycle. Covers the science of warming, the post-Paris treaty architecture, and India's domestic climate action plan.

Chapter 07 +9 Marks Est.

Science of Climate Change

Greenhouse Effect & GWP of Gases

Ocean Acidification & Marine Calcifiers

Ozone Depletion: Vienna Convention

Montreal Protocol & Kigali Amendment

Open Chapter →

Chapter 08 +8 Marks Est.

International Climate Negotiations

UNFCCC: Kyoto to Paris Evolution

COP-30 Belém: NDCs & Global Stocktake

Kunming-Montreal GBF 30×30 Target

GCF, GEF & Loss & Damage Finance

Open Chapter →

Chapter 09 +6 Marks Est.

India's Climate Action

NAPCC: 8 National Missions

Updated NDCs & Net Zero 2070

Mission LiFE & P3 Model

ISA, Green Hydrogen & PM Surya Ghar

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IV

Part IV

Environmental Pollution & Waste Management

Focused on emerging pollutants and the circular economy shift — from microplastics to the EPR framework reshaping India's waste governance.

Chapter 10 +3 Marks Est.

Environmental Pollution

Air: NCAP Targets, SAFAR & BS-VI Norms

Water: BOD/COD, Arsenic/Fluoride, Namami Gange

Emerging: Microplastics & Nanoplastics

Thermal Pollution & Light Pollution

Open Chapter →

Chapter 11 +4 Marks Est.

Modern Waste Management Rules

Solid Waste Management Rules 2016

E-Waste & Plastic Waste EPR Frameworks

Hazardous, Bio-Medical & Battery Waste Rules

Circular Economy: From Linear to Loop

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V

Part V

Environment & Sustainable Agriculture

A critical overlap between Geography, Economy, and Environment. Covers the paradigm shift from resource-intensive Green Revolution techniques to climate-resilient farming systems.

Chapter 12 +5 Marks Est.

Climate-Resilient Agriculture

Organic Farming & PKVY Scheme

Zero Budget Natural Farming (ZBNF)

Precision Agriculture & Drip Irrigation

Soil Health Cards & N:P:K Imbalance

Open Chapter →

Chapter 13 +5 Marks Est.

Land & Water Conservation

Desertification: UNCCD & LDN Targets

Integrated Watershed Management

Groundwater Mapping & Nirmal Jal Prayas

Land Degradation Hotspots in India

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VI

Part VI

Governance, Laws & Institutions

The administrative and legal framework for 2026 — covering landmark domestic legislation, international conventions, and India's institutional architecture for environmental enforcement.

Chapter 14 +9 Marks Est.

National Laws & Policies

Wildlife Protection Act 1972 (2022 Amendment)

EPA 1986 & Forest Conservation Act (2023)

Biological Diversity Act (2023 Amendment) + NBA

EIA Cycle, 2020 Draft & PARIVESH Portal

Open Chapter →

Chapter 15 +7 Marks Est.

International Conventions

Stockholm (POPs), Basel (Waste) & Rotterdam (PIC)

The "Chemicals Trilogy" Lifecycle Framework

CITES, TRAFFIC & CMS Bonn Convention

IWC: Moratorium, Japan Withdrawal & ICJ Ruling

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Chapter 16 +6 Marks Est.

Institutions & Measures

NGT: Structure, Jurisdiction & Landmark Orders

CPCB: AQI, CEPI & 17 Red Industries

Animal Welfare Board: PCA Act & Five Freedoms

ESG Criteria: BRSR, SEBI & Greenwashing

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VII

Part VII · Special Section

2026 High-Probability Hot Topics

Derived from current probabilistic modeling for the 2026 Prelims & Mains cycle. These 5 subtopics have the highest likelihood of appearing across all paper types — treat each as a guaranteed revision priority.

Chapter 17 🔥 2026 Intelligence