Национальный парк Касанка в Замбии

National Park in Zambia's Central Province

Kasanka National Park is a park located in the Chitambo District of Zambia’s Central Province. At roughly , Kasanka is one of Zambia’s smallest national parks. Kasanka was the first of Zambia’s national parks to be managed by a private public partnership. The privately funded Kasanka Trust Ltd has been in operation since 1986 and undertakes all management responsibilities, in partnership with the Department of National Parks and Wildlife (DNPW previously ZAWA). The park has an average elevation between and above mean sea level. It has a number permanent shallow lakes and water bodies with the largest being Wasa. There are five perennial rivers in the park, with the largest being the Luwombwa River. The Luwombwa is the only river that drains the NP, which flows out in the northwestern corner. It is a tributary of the Luapula, which further upstream also drains the Bangweulu Swamp and forms the main source of the Congo River. Although Kasanka NP is part of the Greater Bangweulu Ecosystem, there is no direct hydrological connection between the park and the Bangweulu Wetlands. A total of 114 mammal species have been recorded in the park including elephant, hippopotamus and sitatunga. A number of species have been reintroduced in the park by Kasanka Trust the most successful of which are zebra and buffalo. Close to ten million Eidolon helvum (African straw coloured fruit bat) migrate to the Mushitu swamp evergreen forest in the park for three months during October to December, making it the largest mammal migration in the world. Over 471 bird species have been identified in the park. An airfield lies there.

Kasanka has a varying altitude of and above mean sea level. The park is located in the Zambia in Serenje District of Zambia. While most sources quote the area of the park to be around , others record the area close to , making it one of the smaller national parks in the country. All of these rivers eventually shed their water via one another into the Luapula River, the only drainage outlet for the Bangweulu basin, and a major tributary of the Congo River.

There are a variety of habitats in the park. Brachystegia woodland, otherwise known as Miombo Woodland, covers around 70% of Kasanka’s surface area, interspersed with grassy dambos. It is very rich in tree species and in many places forms a half closed canopy but also supports a well developed herbaceous stratum. A high frequency of fires removes this stratum and young saplings and leads to Miombo Woodland with large, widely separated trees. Decades of “early burning” in the park have resulted in more natural Miombo with a strong presence of young trees and thicket species. Evergreen forests of three kinds occur within Kasanka; Mushitu or swamp forest, riverine forests and very small patches of Mateshe (dry evergreen forest). The Mushitu is characterised by huge red mahoganies, waterberries and quinine trees among others and is fairly well represented. The largest tract of intact Mushitu, in the Fibwe area, hosts the annual gathering of straw coloured fruit bats from October to December making it the largest fruit bat roost on Earth. Riverine forests are found along most rivers in Kasanka, with the largest stretches being found along the Luwombwa. True Mateshe probably was common in historic times but is rare now, as a result of centuries of frequent fires. All forest types are at risk from frequent wildfires as the tree species they support are not resistant to fire. Chipya, also known as Lake Basin Woodland has interspersed trees and do not form a closed canopy. This allows sunlight that aids tall grasses to grow. Chipya is prone to very hot fires in the dry season, and this gives these woodlands their name as ‘chiya’ means ‘burnt’ in the local language. Chipya typically occurs on relatively soils and are thought to be a fire derivate form of Mateshe. Dambos are grassy drainage channels and basins with little to no woody vegetation but very palatable grasses. Most woody species grow on exposed termitaria as dambos tend to retain water very well. Dambos are of a vital importance to grazing mammal species as well as several woodland mammals that choose to graze on the fringes, especially during the dry season. Several large (several square km) grassy plains occur within the park such as Chinyangali close to Fibwe and the Chikufwe plain east of the Luwombwa River. Kasanka has nine permanent lakes and over of rivers flowing through the park. Many of the rivers, especially the Luwombwa in the west support riparian fringe forests on their banks. Large areas of grassy floodplains are found along the Kasanka, Mulembo and Luwombwa rivers. The rivers and lakes are host to a variety of fish and are rich in other forms of aquatic and semi aquatic wildlife. Elephant are faring increasingly well and several breeding herds and bachelor bulls traverse the park and the surrounding game management area. Several of the plains like Chikufwe are home to common reedbuck, buffalo, sable antelope and Lichtenstein's hartebeest, which are often encountered in the dry season. A small population of plains zebra occurs in the park. Roan antelope, defassa waterbuck and Sharpe's grysbok occur but are rare and seldom seen, whereas warthog numbers are increasing and they are commonly sighted. Yellow backed duiker and Moloney’s monkey, which are poached elsewhere, have also got a steady increase in the population in the park. The largest resident predator in the park is the leopard. Lions and hyenas are no longer resident but hyenas are seasonal visitors. Side striped jackal are common and often spotted in the early mornings. A range of smaller carnivores occur, of which water mongoose, white tailed mongoose, African civet and large spotted genet are commonly encountered at night and slender, banded and dwarf mongoose can often be seen crossing pathways during the day. Caracal, serval, honey badger and the rare Meller's mongoose occur but are very seldom sighted. Two species of otter live in Kasanka’s rivers, marshes and lakes.

The first of Kasanka’s famous straw coloured fruit bats (Eidolon helvum) start arriving towards the middle of October each year. By mid November the roost has reached its highest density and numbers are estimated to be around eight to ten million. It is believed to be the highest density of mammalian biomass on the planet, as well as the greatest known mammal migration. The arrival of the bats normally coincides with the start of the first rains and the ripening of many local fruit and berry species such as the masuku (wild loquat) and waterberry, on which the bats feed. It is estimated that 330,000 tonnes of fruits are consumed by the bats during the three months. The bat roost is centred on one of the largest remaining patches of Mushitu (indigenous forest) in Kasanka along the Musola stream. There are a number of excellent 'hides' in trees at the edge of the forest which provide fantastic sightings of the bats in flight at dawn and dusk. The high concentration of bats attracts an incredible variety of predators and scavengers to the bat forest. Martial eagles, pythons, fish eagles, lesser spotted and African hawk eagles, kites, vultures and hobby falcons are amongst the raptors that concentrate on the roost for easy pickings, whereas leopard, water monitors and crocodiles make off with those bats unfortunate enough to drop to the forest floor. The origin of the various colonies that make up this 'mega colony' has never been fully established, however it is known that bats travel from other parts of Africa including Congo. Studies indicate that the abundance of fruits during the season are the major reason for the migration. The bats' arrival starts gradually during the first week of October, numbers peak in November and early December. Numbers start to decrease around the second week of December. The departure of the last bats has been getting later over recent years, with the final bats now generally leaving Kasanka in early January. A study published in the African Journal of Ecology indicated that the migratory impact of the bats could ultimately threaten the viability of the seasonal roost as it increases faster tree mortality. The Kasanka Trust undertakes an extensive fire management program to protect the forest from the devastating fires which over time have reduced the size of the forest. A 'Fire Exclusion Zone' has been established which over time will allow natural regeneration of the bats' forest in order to protect the unique phenomenon.

Kasanka holds undoubtedly some of the finest birding in Africa’ according to Dr Ian Sinclair, one of Africa’s leading ornithologists. With over 330 species recorded in this relatively small area without altitudinal variation, one will find it difficult to argue with this statement. Kasanka is blessed with a wide variety of habitats, each hosting its own community of bird species, many of which are rare or uncommon. A boat trip along the Luwomwba River, or any other major river in the park may reveal Pel’s fishing owl, African finfoot, half collared kingfisher, Ross's turaco and Böhm's bee eater. The vast wetlands of Kasanka support some species not easily seen elsewhere such as rufous bellied heron, lesser jacana and African pygmy goose. The shoebill was confirmed for the first time in 20 years at the end of 2010 and a breeding pair of wattled cranes and their offspring are often encountered. Marsh tchagra, coppery tailed coucal, Fulleborn's longclaw, locustfinch, pale crowned, croaking and short winged cisticola, chestnut headed and streaky breasted flufftail, harlequin and blue quail, black rumped buttonquail and fawn breasted waxbill are amongst the other specials on the wetland fringes and in the large dambos.

Zambia's wildlife management is considered one of best managed and administered among all countries in Africa. The management faces ever increasing challenges from a rapidly increasing human population in the country. This manifest in the form of increasing poaching and illegal harvesting from national parks, encroachment, and deforestation due to charcoal production and farming activities. During the 1980s, the Zambian administration faced a shortage of trained staff, transport and patrols, leading the government to seek the support of NGOs and private bodies. After visiting the neglected and completely undeveloped Kasanka National Park for the first time in 1985 and hearing gunshots, the late David Lloyd, a British colonial officer, impressed with the wide range of habitats and amazing scenery, concluded that if there was still poaching, there must still be wildlife. He made it his life's mission to develop the park and safeguard the biodiversity of Kasanka. In 1987 the Kasanka Trust (KTL) was founded as a non profit charitable institution with tax exemption within Zambia. It has since become a registered charity in the United Kingdom and the Netherlands. The Kasanka Trust has a Memorandum of Understanding with the Department of National Parks and Wildlife (previously ZAWA Zambian Wildlife Authority) and under this agreement is responsible for infrastructure and habitat management, community outreach and tourism. It became the first national park to be managed by a private body.