Rubondo Island National Park

Rubondo Island is located in the south-western corner of Lake Victoria, Tanzania. Rubondo Island is about west of Mwanza. The main island, Rubondo (2o 18’ S, 31o 50’ E) is 237 km2 in size. The island protects another 11 islets, none much larger than 2 km2. These 10 islands form the Rubondo Island National Park covering an area of . Lake Victoria is 1,134 metres above sea level. The highest point on Rubondo is the Masa Hills in the far south, at an elevation of 1,486m (350m above the level of the lake). The forest is interspersed with patches of open grassland and, all but restricted to the Lukaya area, acacia woodland. The eastern lakeshore is characterised by rocky areas and sandy beaches whilst the western shore supports extensive papyrus swamps, lined with date palms. == Climate ==

There is a bimodal rainfall distribution, with peaks in December and April–May during the October–May rainy season. The annual temperature is 19–26 °C. == History ==

Rubondo Island became a game reserve in 1965, to provide a sanctuary for animals. It was gazetted as a national park in 1977. Today Rubondo is uninhabited. Consequently, 80% of the island remains forested today. The 400 “fisher folk” of the Zinza tribe, who lived on the island and maintained banana plantations, were resettled on neighbouring islands and onto the mainland by the government in the late 1960s. Courts have passed sentences of six weeks imprisonment for unauthorised landings on the island and six months for attempted poaching. == Animal introductions ==

Over a four-year period (1966–1969) Professor Bernhard Grzimek of the Frankfurt Zoological Society (FZS) released 17 chimpanzees in four cohorts onto Rubondo Island. The first cohort of chimpanzees arrived in Dar es Salaam aboard the German African Line’s steamship Eibe Oldendorff on 17 June 1966 (Standard Newspaper Tanzania, 1966). The animals had no rehabilitation or pre-release training. The chimpanzees were all wild-born and purportedly of West African descent, The founder chimpanzees had spent varying periods, from 3.5 months to 9 years, in captivity in European zoos or circuses before their release. The chimpanzees after one year were able to find and eat wild foods and construct nests for sleeping, and have now reverted to an unhabituated state characteristic of wild chimpanzees. ==References==