| Feature | In-Situ Conservation | Ex-Situ Conservation |
|---|---|---|
| Definition | Protection in natural habitat | Protection outside natural habitat |
| Latin meaning | "In place" | "Out of place" |
| Primary goal | Preserve ecosystem + species | Rescue critically endangered species |
| Examples | National parks, wildlife sanctuaries, biosphere reserves, sacred groves, hotspots | Zoos, botanical gardens, seed banks, gene banks, cryopreservation, tissue culture |
| Preserves ecological interactions? | Yes — full ecosystem functions maintained | No — isolated specimens/populations |
| Evolutionary processes continue? | Yes — natural selection operates | Limited — artificial selection risk |
| Natural behaviour preserved? | Yes | Often lost |
| Genetic diversity maintained? | Best — large, panmictic populations | Risky — small captive populations prone to inbreeding |
| Cost | Lower per species (landscape-scale protection) | Higher per species (captive care, facilities) |
| Limitation | Requires large tracts, enforcement challenges | Inbreeding, loss of behaviour, space limitations |
| India examples | Nilgiri BR, Jim Corbett NP, Gir Sanctuary, sacred groves of Meghalaya | Indian Botanical Garden (Howrah), National Zoo (New Delhi), National Seed Bank (NBPGR) |
| Temperature relevance | Ambient | Cryopreservation: −196 °C (liquid nitrogen) |
| NEET trap | Sacred groves are IN-SITU (not ex-situ!) | Botanical gardens and zoos are EX-SITU |
Rule: If species stays in natural habitat → in-situ. If species is removed to a controlled facility → ex-situ. The management mechanism (government, community, religious) is irrelevant to this classification.