Context: The Kaziranga National Park and Tiger Reserve has released its first-ever scientific assessment report on the greater hog badger (Arctonyx collaris).
About The Greater Hog Badger:
What It Is?
- The greater hog badger (Arctonyx collaris) is a nocturnal, medium-sized burrowing omnivore. It is locally referred to as ‘mati gahori’ (earth pig) in Assamese due to its pig-like snout and digging behavior. It is the largest of the three globally extant hog badger species.
Habitat and Distribution:
- Local Range: It is widely distributed across the diverse ecosystems of Northeast India, particularly within the 1,100 sq. km floodplain network of the Kaziranga landscape.
- Global Range: Its geographic distribution spans parts of South, Central, and Southeast Asia. This includes a range extending from Bangladesh and northeastern India eastward through Myanmar, Thailand, Lao PDR, Cambodia, and Vietnam.
- Ecological Niche: As a highly fossorial mammal (adapted for digging and living underground), it is primarily found in forest floors, grasslands, and areas with soft soils rich in leaf litter where it can easily forage.
Conservation Status:
- International Union for Conservation of Nature (IUCN): Globally classified as a Vulnerable species on the IUCN Red List.
- Domestic Protection: Granted the highest level of legal protection in India under Schedule I of the Wildlife Protection Act of 1972.
Key Characteristics and Ecosystem Functions:
- Fossorial Engineering: The species is anatomically specialized for digging. By continuously turning over soil and leaf litter while foraging, it plays a critical role in nutrient redistribution and soil aeration.
- Micro-Habitat Formation: Its burrowing and digging behavior breaks up compacted earth, which facilitates seed germination and creates crucial micro-habitats for various invertebrates and small vertebrates.
- Elusive and Nocturnal: It operates almost exclusively at night, making it highly dependent on dense cover to avoid predators and minimize interactions with humans.
About Kaziranga National Park and Tiger Reserve:
What It Is?
- Kaziranga National Park and Tiger Reserve is a globally renowned wildlife sanctuary, a designated UNESCO World Heritage Site, and a highly successful Tiger Reserve.
- It hosts the world’s largest population of the great Indian one-horned rhinoceros and serves as a vital refuge for breeding populations of elephants, wild water buffalo, and swamp deer.
Location: The park is located in the northeastern state of Assam, India, spanning the floodplains of the Golaghat, Nagaon, and Sonitpur districts along the edge of the Eastern Himalaya biodiversity hotspot.
Key Geological Features:
- The Brahmaputra Floodplain Matrix: The park is geologically defined by the massive alluvial floodplains of the Brahmaputra River, which borders the sanctuary to the north.
- Alluvial Wetlands and Beels: The terrain is crisscrossed by numerous seasonal and permanent oxbow lakes, locally known as beels. These wetlands act as natural water reservoirs, flood buffers, and critical foraging hubs for both large herbivores and fossorial burrowers.
- Diverse Vegetative Zones: The park features a unique combination of four main types of vegetation:
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- Extensive patches of tall elephant grasslands (Phragmites and Saccharum).
- Open, marshy tall-grass savannas.
- Tropical moist semi-evergreen forests.
- Tropical moist deciduous forests interspersed with dense canebrakes.
- The Karbi Anglong Foothill Corridor: To the south, the flat riverine plains transition into the foothills of the Karbi Anglong hills.
