Keibul Lamjao National Park: Protected Landscape and Mapped Geography in Manipur

Keibul Lamjao National Park is world-renowned as the only floating national park on Earth, a distinction that sets it apart among protected areas globally. The park's defining feature is the phumdi, a thick mat of decomposed vegetation and organic matter that floats on the lake surface, creating a buoyant landscape capable of supporting large mammals. However, the park's most celebrated resident is the Sangai, or brow-antlered deer, an endangered subspecies of Eld's deer that exists nowhere else in the world. This deer population, which once declined to just 14 individuals in 1975, has recovered to approximately 260 animals through conservation efforts. The park also hosts significant bird populations including the threatened hooded crane and the Burmese sarus crane, making it a vital habitat for both migratory and resident avian species.

The establishment of Keibul Lamjao National Park is inextricably linked to the conservation story of the brow-antlered deer, a species that has captured both scientific and cultural attention in Manipur. The brow-antlered deer, first discovered in Manipur in 1839 and formally described as Cervus eldi eldi in 1844 in honor of British officer Lt. Percy Eld, was tragically reported as extinct in 1951. The species was subsequently rediscovered in the Keibul Lamjao area by the renowned environmentalist and photographer E.P. Gee, a discovery that catalyzed the protection of this unique habitat. The area was initially declared a wildlife sanctuary in 1966 specifically to preserve the natural habitat of this endangered deer subspecies. Recognizing the critical importance of the ecosystem, the reserve was elevated to national park status and gazetted in 1977. Throughout its conservation history, the Sangai population has served as both a symbol and a measure of success. From a precarious population of just 14 individuals in 1975, conservation efforts helped grow the herd to 155 by 1995, and the latest wildlife census conducted in March 2016 recorded approximately 260 individuals. The park has also gained recognition through cultural mediums, including the documentary The Return of Sangai (Sangai Hallakpa) produced by the Manipur Forest Department in both English and Manipuri languages.

The landscape of Keibul Lamjao National Park is defined by its extraordinary floating ecosystem, a phenomenon found nowhere else in the world's protected areas. The park occupies the south-eastern region of Loktak Lake, a vast freshwater lake that forms the largest wetland in Northeast India. The most distinctive feature of the park is the phumdi, a complex mat of organic detritus and biomass that has accumulated and thickened over time into a solid but floating mass. These phumdis are not merely surface vegetation but are substantial structures that extend from the lake bed in some areas while floating buoyantly in others. The vegetation on these floating mats includes dense stands of Phragmites karka (common reed), elephant grass, Saccharum species, and the wild rice Zizania latifolia, which is particularly relished by the Sangai deer. Three hills—Pabot, Toya, and Chingjao—rise from within the park boundary, providing terrestrial refuge zones that become especially important during the monsoon flooding. The park exhibits a unique hydrological character described as "too deep to be marsh, too shallow to be a lake," reflecting its intermediate nature in the wetland classification. The water depths and phumdi thickness fluctuate seasonally, with the park's overall extent varying considerably between the wet monsoon months and the drier winter period.

The ecological character of Keibul Lamjao National Park represents a remarkable blend of aquatic, wetland, and terrestrial ecosystems within a floating landscape. The park's vegetation is primarily classified as moist semi-evergreen forest, though the floating phumdi communities form the most distinctive ecological element. The phumdi vegetation has been structurally analyzed and contains a diverse assemblage of plant species, with Phragmites karka dominating at approximately 45 percent, followed by elephant grass at 25 percent, and various Saccharum species contributing to the remaining composition. The park supports two distinct types of phumdi: the phumdi ataoba, which floats on the surface and supports emergent vegetation, and the phumdi aruppa, which has sunk to the lake bed but continues to support rich growth of reeds and grasses. The aquatic environment contains numerous species including the water hyacinth (Eichhornia crassipes), the sacred lotus (Nelumbo nucifera), and various submerged and emergent macrophytes. The three hills surrounding the park, once covered in vegetation, have become increasingly denuded over time, though they continue to serve important ecological functions as wildlife refugia. The park's location within the broader Loktak Lake Ramsar site further emphasizes its role as a critical wetland ecosystem of international importance.

The wildlife of Keibul Lamjao National Park is centered on the preservation of the brow-antlered deer, known locally as the Sangai, which serves as the park's flagship species. This endangered subspecies of Eld's deer exists in only this single location globally, making the park irreplaceable for its survival. Beyond the Sangai, the park supports a diverse mammalian community including hog deer, wild boar, large Indian civet, common otter, jungle cat, Asian golden cat, sambar deer, and various smaller mammals including bamboo rats, muskrats, and flying foxes. The reptilian fauna is particularly diverse, with species including various kraits, cobras, the Asian rock python, Russell's viper, and the checkered garter snake. Amphibians and aquatic reptiles include the keelback tortoise and several other turtle species. The park's avifauna is especially notable, with both migratory and resident bird species recorded. Significant bird species include the threatened hooded crane, the Burmese sarus crane, spotbill duck, blue-winged teal, ruddy shell duck, and various kingfishers, mynas, drongos, and woodpeckers. The fish population includes species such as Channa striata, common carp, Wallago attu, and pool barb, which support both ecological functions and local livelihoods.

The conservation significance of Keibul Lamjao National Park extends beyond its role as a refuge for the Sangai deer to encompass broader wetland ecosystem preservation and cultural heritage protection. The park's inclusion on UNESCO's tentative list for World Heritage status as the Keibul Lamjao Conservation Area recognizes its outstanding universal value, with the designation also encompassing the Loktak Lake buffer zone and Pumlen Pat. However, the park faces significant conservation challenges, primarily stemming from the construction of the Ithai Barrage under the Loktak Multi-Purpose Project in 1983. This hydroelectric infrastructure altered the natural water level cycles that historically governed the floating and sinking dynamics of the phumdi, leaving them permanently floating and reducing their thickness and ecological function. Conservation measures implemented include a perimeter fence spanning 2,281 meters, a cattle-proof trench along 870 meters of the boundary, and the establishment of seven canoes and four checkpoints for security. The park is staffed with dedicated personnel including an Assistant Conservator of Forests, a veterinary surgeon, rangers, field assistants, foresters, and forest guards. Conservation priorities include habitat monitoring, strict protection of core areas, water level management, prevention of phumdi theft, and community engagement through ecotourism and educational programs.

Keibul Lamjao National Park holds profound cultural significance for the people of Manipur, extending far beyond its ecological value as a protected area. The Sangai deer occupies a sacred place in Meitei folklore and culture, representing not merely a wildlife species but a symbol of state identity recognized officially as the state animal of Manipur. The park and the broader Loktak Lake ecosystem have provided sustenance for local communities for generations, with fishing, vegetable cultivation, and resource collection from the phumdis forming traditional livelihoods. The Meitei language name for the park, Keibul Lamjao Leipakki Lampak, reflects the deep connection between the landscape and local identity. The park's cultural importance is further emphasized through documentary productions like The Return of Sangai, created by the Manipur Forest Department in both English and Manipuri languages. Traditional land use practices, including the collection of resources from phumdis, have shaped the human-environment relationship in this landscape for centuries, though modern conservation needs and traditional practices sometimes come into tension.

Keibul Lamjao National Park stands as a singular natural phenomenon, the world's only floating national park, where visitors can witness an ecosystem built on buoyant islands of decomposing vegetation supporting a population of the endangered Sangai deer. The park offers a distinctive visitor experience through boat trips along labyrinthine water routes that wind through colorful aquatic vegetation and floating phumdi formations. The optimal times for wildlife viewing are during the early morning hours between 0600 and 1000 and in the afternoon from 1530 to 1800, when the Sangai deer emerge from the phumdi to feed in herds. The recovery of the Sangai population from just 14 individuals in 1975 to approximately 260 in 2016 represents one of India's most successful conservation stories. The park's position within the Loktak Lake Ramsar site and its tentative UNESCO World Heritage status underscore its international ecological importance.

The best time to visit Keibul Lamjao National Park coincides with the seasons when wildlife viewing is most productive and the park's unique floating landscape is most accessible. The ideal visiting periods are during the early morning hours between 0600 and 1000 and in the afternoon from 1530 to 1800, when the Sangai deer leave the shelter of the phumdi vegetation to feed in visible herds. The park can be experienced year-round, though visitors should be aware that the monsoon season brings significant flooding that changes the park's character and may temporarily affect accessibility. During the dry season, the phumdi conditions stabilize and wildlife viewing opportunities improve. The climate of Manipur ranges from hot summers with temperatures reaching 34.4°C to cool winters with minimum temperatures around 1.7°C, with the monsoon months of July and August receiving the heaviest rainfall. Visitors interested in birdwatching should consider the migratory bird seasons when species like the hooded crane visit the park.