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Natural History

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Natural History of the Park


There are two major biomes present in Manas:

* The grassland biome : pygmy hog, rhinoceros (re-introduced in 2007 after extinction due to heavy poaching during the Bodo uprising), bengal florican, asiatic wild buffalo, etc.
* The forest biome : slow loris, capped langur, wild pig, sambar, great hornbill, malayan giant squirrel or black squirrel, etc.

Flora

Vegetation: The Burma Monsoon Forests of Manas lie on the borders between the Indo-Gangetic and Indo-Malayan biogeographical realms and is part of the Brahmaputra Valley Biogeographic Province. The combination of Sub-Himalayan Bhabar Terai formation with riverine succession leading up to Sub-Himalayan mountain forest makes it one of the richest biodiversity areas in the world.

The main vegetation types are:

* Sub-Himalayan Light Alluvial Semi-Evergreen forests in the northern parts.
* East Himalayan mixed Moist and Dry Deciduous forests (the most common type).
* Low Alluvial Savanna Woodland, and
* Assam Valley Semi-Evergreen Alluvial Grasslands which cover almost 50% of the Park.

Much of the riverine dry deciduous forest is at an early successional stage. It is replaced by moist deciduous forest away from water courses, which is succeeded by semi-evergreen climax forest in the northern part of the park. A total of 543 plants species have been recorded from the core zone. Of these, 374 species are dicotyledons (including 89 trees), 139 species monocotyledons and 30 are Pteridophytes and Gymnosperms.

The Park's common trees include Aphanamixis polystachya, Anthocephalus chinensis, Syzygium cumini, S. formosum, S. oblatum, Bauhinia purpurea, Mallotus philippensis, Cinnamomum tamala, Actinodaphne obvata, Bombax ceiba, Sterculia villosa, Dillenia indica, D. pentagyna, Careya arborea, Lagerstroemia parviflora, L.speciosa, Terminalia bellirica, T. chebula, Trewia polycarpa, Gmelina arborea, Oroxylum indicum and Bridelia spp. The Grasslands are dominated by Imperata cylindrica, Saccharum naranga, Phragmites karka, Arundo donax, Dillenia pentagyna, Phyllanthus emblica, Bombax ceiba, and species of Clerodendrum, Leea, Grewia, Premna and Mussaenda
[edit] Fauna

The sanctuary has recorded 55 species of mammals, 380 species of birds, 50 of reptiles, and 3 species of amphibians. Out of these wildlife, 21 mammals are India’s Schedule I mammals and 31 of them are threatened.

The fauna of the sanctuary include Asian Elephants, Indian Rhinoceros, Gaurs, Asian Water Buffaloes, Barasingha, Tigers, Leopards, Clouded Leopards, Asian golden cat, Capped Langurs, Golden Langurs, Assamese Macaques, Slow Loris, Hoolock Gibbons, Smooth-coated Otters, Sloth Bears, Barking Deer, Hog Deer, Sambar Deer and Chital.

The park is well known for its rare and endangered wildlife which is not found anywhere else in the world like the Assam Roofed Turtle, Hispid Hare, Golden Langur and Pygmy Hog.

Manas houses about 380 species of birds. Manas have the largest population of endangered Bengal Florican. The major other birds includes Giant Hornbills, Jungle Fowls, Bulbuls, Brahminy Ducks, Kalij Pheasants, Egrets, Pelicans, Fishing Eagles, Serpent Eagles, Falcons, Scarlet Minivets, Bee-Eaters, Magpie Robins, Pied Hornbills, Grey Hornbills, Mergansers, Harriers, Ospreys and Herons.