In Situ Conservation
உயிரிட பாதுகாப்பு
Ex-situ conservation is a desperate measure, not a strategy. When you remove a species from its natural habitat, you sever the evolutionary feedback loops that drive adaptation. In-situ conservation is the only way to preserve the genetic integrity of an ecosystem.
The idea
In-situ conservation protects the entire ecosystem and its biodiversity at all levels by maintaining species within their natural habitat. This approach ensures that ecological processes and evolutionary changes continue uninterrupted. Key examples mandated by NCERT include Biosphere Reserves, National Parks, and Wildlife Sanctuaries. It is the most effective method for long-term biodiversity maintenance.
Why it matters
It allows species to evolve and adapt within their natural environment, maintaining ecological processes and evolutionary potential.
NEET lens
NEET focuses on the distinction between In-situ and Ex-situ. Memorize the list of protected areas under In-situ. Expect match-the-following questions regarding the specific definitions of National Parks versus Sanctuaries. Do not confuse these with botanical gardens or seed banks, which are Ex-situ.
Clinical significance
When an ecosystem collapses due to the loss of keystone species, the resulting trophic cascade causes irreversible damage to the biosphere. Just as the loss of a single organ system leads to systemic failure in the human body, the loss of biodiversity leads to the collapse of ecosystem services like nutrient cycling and carbon sequestration.
Introduction
In situ (on site) conservation protects threatened species in their natural habitat, so that the entire ecosystem is protected.
Core concept
Approaches (NCERT): biodiversity hotspots; protected areas — India now has 14 biosphere reserves, 90 national parks and 448 wildlife sanctuaries; sacred groves — tracts of forest set aside, where all the trees and wildlife within are venerated and given total protection (e.g. Khasi and Jaintia Hills in Meghalaya, Aravalli Hills of Rajasthan, Western Ghat regions of Karnataka and Maharashtra, Sarguja, Chanda and Bastar areas of Madhya Pradesh); in Meghalaya, sacred groves are the last refuges for a large number of rare and threatened plants. A biosphere reserve has a core zone (legally protected, no human activity allowed), a buffer zone (limited human activity, such as research and education) and a transition zone (human settlements, agriculture). The Dachigam National Park in Jammu and Kashmir is home to the hangul (Kashmir stag).
Go deeper
In situ conservation keeps species in their natural ecological relationships and lets evolution continue; it is preferred over ex situ methods whenever possible.
From Class 10
Protecting animals and plants where they naturally live — in national parks and sanctuaries — is in situ conservation.