Biogeographical Regionalization – Aquatic Life YouTube Lecture Handouts

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Watch video lecture on YouTube: Ekman, Scharmada & Forbes: Biogeographical Regionalization - Aquatic Life Ekman, Scharmada & Forbes: Biogeographical Regionalization - Aquatic Life
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Biogeography Meaning:

  • Biogeography is the scientific study of the geographic distribution of plant and animal life.

    • Bio means life

    • Geo means earth

  • Biogeography, the geographic distribution of species, provides evidence of evaluation.

  • Determines how and where different species migrated.

  • It also includes ecological and historical biogeography.

    Biogeographic Zones in India

    Biogeographic Zones in India

    Biogeographic Zones in India

Biogeographical Classification:

  • Major Classifications

  • Terrestrial Plants

  • Terrestrial Animals

  • Aquatic Life

Based on Distributional Pathway

  • Larval life span

  • Generation time

  • Ocean Currents

Sven Ekman Classification

Basis of geographical boundaries & fauna Indo-West Pacific: Main region

Forbes Classification

Categorized as fishes, molluscs & radiates Homozoic belts Resemblance by representation & not by identity

Schmarda’S Classification

Similarity of animals in similar geographical conditions – unrelated to geopolitical regions Vicariant forms

Complete details on biogeographical regionalization and study material can be fetched at: Examrace IAS Mains Geography Optional Series