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Also called the Oriental realm by biogeographers, Indomalaya spreads all over the Indian subcontinent and Southeast Asia to lowland southern China, and through Indonesia as far as Sumatra, Java, Bali, and Borneo, east of which lies the Wallace line, the realm boundary named after Alfred Russel Wallace which separates Indomalaya from Australasia.
This page features a list of biogeographic provinces that were developed by Miklos Udvardy in 1975, [1] [2] later modified by other authors. [according to whom?] Biogeographic Province is a biotic subdivision of biogeographic realms subdivided into ecoregions, which are classified based on their biomes or habitat types and, on this page, correspond to the floristic kingdoms of botany.
1. Ethiopian Region: Africa (except the northern corner), with part of southern Arabia; 2. Oriental Region: tropical Asia, with associated continental islands; 3. Palearctic Region: Eurasia above the tropics, with the northern corner of Africa; 4. Nearctic Region: North America, excepting the tropical part of Mexico; Realm Neogea 5.
Temperate Asia is the eastern part of the Palearctic realm (which in turn is part of the Holarctic), and its south-eastern part belongs to the Indomalayan realm (previously called the Oriental region). Asia shows a notable diversity of habitats, with significant variations in rainfall, altitude, topography, temperature and geological history ...
India ranks fourth in Asia and tenth in the world amongst the top 17 mega-diverse countries in the world. [1] India harbours nearly 11% of the world's floral diversity comprising over 17500 documented flowering plants, 6200 endemic species, 7500 medicinal plants and 246 globally threatened species in only 2.4% of world's land area. [2]
The relatively recent study of plate tectonics has discovered that Asia has several regions that would be considered distinct landmasses if strictly geologic and tectonic criteria were used (for example, South Asia and East Asia). Definition of continental plates is the realm of geologists.
These shifts in time and identification sometimes confuse the scope (historical and geographic) of Oriental Studies. Yet there remain contexts where "the Orient" and "Oriental" have kept their older meanings (e.g., "Oriental spices" typically are from the regions extending from the Middle East to sub-continental India to Indo-China).
The original drawing of the line in Wallace's paper. One of the earliest descriptions of the biodiversity in the Indo-Australian Archipelago dates back to 1521 when Venetian explorer Pigafetta recorded the biological contrasts between the Philippines and the Maluku Islands (Spice Islands) (on opposite sides of the Wallace's Line) during the continuation of the voyage of Ferdinand Magellan ...