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Biodiversity

Biodiversity for UPSC Prelims and Mains, taught in 2 parts. Each part has tables, exam traps, a recap and practice questions, and every paragraph is explained in Kannada.

Quick recap: Quick recap: Biodiversity on one page

Both parts of Biodiversity condensed for quick revision: levels and measures, India's megadiversity, hotspots and zones; values, threats, extinctions, the IUCN Red List and conservation; a one-table overview and eight mixed questions.

Parts of this chapter

Part 1

What biodiversity is and where it is found

The CBD definition and the three levels of biodiversity; species richness and evenness, alpha, beta and gamma diversity; the latitudinal gradient and the species–area relationship; India as a megadiverse country; biodiversity hotspots and India's four; the ten biogeographic zones; endemic species. Part 2

Value, threats, the Red List and conservation

Direct values and ecosystem services; the rivet popper hypothesis; the evil quartet of threats; background and mass extinctions; the IUCN Red List and its categories; in situ and ex situ conservation, sacred groves, seed and gene banks; India's biodiversity institutions.

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