UPSC Notes

Ecosystem-based Adaptation (EbA)

PYQs

8

Articles

1

Momentum

21

Phase IFoundation

Background

Overview

EbA is a critical strategy for climate change adaptation, offering sustainable, cost-effective, and equitable solutions, especially for vulnerable coastal communities. UPSC examines India's climate resilience strategies, environmental policy, and sustainable development goals, making EbA a key concept for understanding India's approach to environmental challenges and disaster management.

Ecosystem-based Adaptation (EbA) is an approach that uses biodiversity and ecosystem services as part of an overall adaptation strategy to help people adapt to the adverse effects of climate change. It involves the conservation, sustainable management, and restoration of ecosystems to provide services that reduce vulnerability to climate change.

Phase IIStatic core

Facts & tables

Key facts

Mechanism

Utilizes natural ecosystems like mangroves, coral reefs, seagrasses, and wetlands as natural buffers against climate impacts such as storm surges and sea-level rise.

Co-benefits

Offers multiple benefits beyond climate resilience, including livelihood support (e.g., honey collection, crab farming), biodiversity conservation, and ecosystem strengthening.

Cost-effectiveness

Often more cost-effective and sustainable in the long run compared to 'grey' engineered infrastructure (e.g., seawalls, groynes), which can be expensive to maintain and may displace risks.

Challenges in India

Faces hurdles due to fragmented mandates, weak monitoring, a preference for visible engineered infrastructure, and ambiguity in classification and terminology, leading to under-recognition and underfunding.

Reference table

Ecosystem-based vs. Engineered Adaptation

FeatureEcosystem-based Adaptation (EbA)Engineered/Grey Adaptation
ApproachUses natural ecosystems and their servicesUses man-made structures (e.g., seawalls, embankments)
CostOften more cost-effective in long runHigh initial and maintenance costs
BenefitsProvides multiple co-benefits (livelihoods, biodiversity)Primarily focused on protection, can displace risks
SustainabilitySelf-sustaining, strengthens ecosystemsRequires continuous maintenance, can degrade natural systems
ExamplesMangrove restoration, coral reef protectionSeawalls, groynes, tetrapods

Reference table

Static syllabus anchors

TypeReference
Conceptual areaBiodiversity Conservation & Protected Areas
Conceptual areaEnvironmental Law & Policy
Conceptual areaWelfare Schemes & Social Policies

Reference table

Institutions & roles

BodyRole
National Coastal MissionImplements
Ministry of Environment, Forest and Climate Change (MoEFCC)Regulates
Phase IIIExam lens

Prelims angle

Overview

Prelims angle: Multi-statement analysis

Prelims angle: Conceptual understanding

Quick revision

  • EbA uses natural ecosystems for climate change adaptation.
  • Examples include mangroves, coral reefs, and seagrasses.
  • Provides co-benefits like livelihood support and biodiversity.
  • Often more cost-effective and sustainable than engineered solutions.
  • Challenges include lack of recognition, fragmented policy, and funding gaps in India.

Elimination traps

Body vs treatyDistinguish EbA from broader concepts like Nature-based Solutions (NbS) or specific programs like MISHTI, while understanding their overlap and how EbA is a specific application.

Treaty = agreement between states; body = institution.

High-confidence PYQs

Topic timeline

Biodiversity Conservation & Protected AreasEnvironmental Law & PolicyWelfare Schemes & Social Policies

When mangroves do what seawalls cannot

05 Jun 2026 · Ecosystem-based Adaptation (EbA) leverages natural ecosystems for climate adaptation, providing co-benefits like livelihood support and biodiversity conservation, often outperforming costly engineered solutions. India needs to better recognize, classify, and integrate EbA into its coastal planning and adaptation policy.

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Ecosystem-based Adaptation (EbA)

Practice writing on this topic

UPSC has asked 8 linked questions on Ecosystem-based Adaptation (EbA) in Mains. Write an answer to one — and get it evaluated.