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48-679: Kagisano–Molopo covers an area of 23,827 square kilometres (9,200 sq mi) in the north-western corner of the North West province. It borders on the Kgalagadi District of the Republic of Botswana to the north, Moshaweng Local Municipality in the Northern Cape province to the south-west, Greater Taung Local Municipality to the south, Naledi Local Municipality to the south-east, and Ratlou Local Municipality to

96-430: A first language , while 3.4% speak Afrikaans and 1.6% speak English . The municipal council consists of twenty-nine members elected by mixed-member proportional representation . Fifteen councillors are elected by first-past-the-post voting in fifteen wards , while the remaining fourteen are chosen from party lists so that the total number of party representatives is proportional to the number of votes received. In

144-438: A continuous tree canopy which would prevent further grass growth. Prior to European settlement aboriginal land use practices, including fire, influenced vegetation and may have maintained and modified savanna flora. It has been suggested by many authors that aboriginal burning created a structurally more open savanna landscape. Aboriginal burning certainly created a habitat mosaic that probably increased biodiversity and changed

192-491: A dramatic reduction in basal area and canopy cover, often leaves a high percentage of woody plants alive either as seedlings too small to be affected or as plants capable of re-sprouting from lignotubers and broken stumps. A population of woody plants equal to half or more of the original number often remains following pulling of eucalypt communities, even if all the trees over 5 metres are uprooted completely. A number of exotic plants species have been introduced to savannas around

240-804: A high tree density. It is often believed that savannas feature widely spaced, scattered trees. However, in many savannas, tree densities are higher and trees are more regularly spaced than in forests. The South American savanna types cerrado sensu stricto and cerrado dense typically have densities of trees similar to or higher than that found in South American tropical forests, with savanna ranging from 800 to 3300 trees per hectare (trees/ha) and adjacent forests with 800–2000 trees/ha. Similarly Guinean savanna has 129 trees/ha, compared to 103 for riparian forest , while Eastern Australian sclerophyll forests have average tree densities of approximately 100 per hectare , comparable to savannas in

288-402: A means of clearing land. In the 1950s arboricides suitable for stem injection were developed. War-surplus heavy machinery was made available, and these were used for either pushing timber, or for pulling using a chain and ball strung between two machines. These two new methods of timber control, along with the introduction and widespread adoption of several new pasture grasses and legumes promoted

336-444: A reduction in the need to burn to produce a flush of green growth because legumes retain high nutrient levels throughout the year, and because fires can have a negative impact on legume populations which causes a reluctance to burn. The closed forest types such as broadleaf forests and rainforests are usually not grazed owing to the closed structure precluding grass growth, and hence offering little opportunity for grazing. In contrast

384-469: A resurgence in tree clearing. The 1980s also saw the release of soil-applied arboricides, notably tebuthiuron , that could be utilised without cutting and injecting each individual tree. In many ways "artificial" clearing, particularly pulling, mimics the effects of fire and, in savannas adapted to regeneration after fire as most Queensland savannas are, there is a similar response to that after fire. Tree clearing in many savanna communities, although causing

432-459: A simplified yet widespread climatic concept. The divergence has sometimes caused areas such as extensive savannas north and south of the Congo and Amazon Rivers to be excluded from mapped savanna categories. In different parts of North America, the word "savanna" has been used interchangeably with " barrens ", " prairie ", " glade ", "grassland" and " oak opening ". Different authors have defined

480-599: Is Tsabong . The district of Kgalagadi covers a large part of the Kalahari Desert . It has a total area of 105,200 km and has a population of 42,000 (2001). More than one-third of the district is covered by the Kgalagadi Transfrontier Park , which extends into South Africa, and which is a major tourist attraction. As of 2011, the total population of the district was 50,492 (compared to 42,049 in 2001). The growth rate of population during

528-483: Is not prominent but that rivers in savanna landscapes erode more by lateral migration . Flooding and associated sheet wash have been proposed as dominant erosion processes in savanna plains. The savannas of tropical America comprise broadleaved trees such as Curatella , Byrsonima , and Bowdichia , with grasses such as Leersia and Paspalum . Bean relative Prosopis is common in the Argentinian savannas. In

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576-473: Is possible for there to be multiple stable biomes. The annual rainfall ranges from 500 mm (19.69 in) to 1,270 mm (50.00 in) per year, with the precipitation being more common in six or eight months of the year, followed by a period of drought. Savannas may at times be classified as forests. In climatic geomorphology it has been noted that many savannas occur in areas of pediplains and inselbergs . It has been posited that river incision

624-419: Is vague and therefore the two can be combined into a single biome as both woodlands and savannas feature open-canopied trees with crowns not usually interlinking (mostly forming 25-60% cover). Over many large tropical areas, the dominant biome (forest, savanna or grassland) can not be predicted only by the climate, as historical events plays also a key role, for example, fire activity. In some areas, indeed, it

672-462: The Mediterranean region were likewise created and maintained by anthropogenic fire. Intentional controlled burns typically create fires confined to the herbaceous layer that do little long term damage to mature trees. This prevents more catastrophic wildfires that could do much more damage. However, these fires either kill or suppress tree seedlings, thus preventing the establishment of

720-520: The election of 1 November 2021 the African National Congress (ANC) obtained a majority of twenty seats on the council. The following table shows the results of the 2021 election. The 2001 census divided the municipality into the following main places : Kgalagadi District Kgalagadi is a district in southwest Botswana , lying along the country's border with Namibia and South Africa . The administrative center

768-476: The greenhouse effect may result in an alteration of the structure and function of savannas. Some authors have suggested that savannas and grasslands may become even more susceptible to woody plant encroachment as a result of greenhouse induced climate change . However, a recent case described a savanna increasing its range at the expense of forest in response to climate variation, and potential exists for similar rapid, dramatic shifts in vegetation distribution as

816-749: The prairies in North America and steppes in Eurasia , which feature cold winters, savannas are mostly located in areas having warm to hot climates, such as in Africa, Australia, Thailand, South America and India. The word derives from the Spanish sabana , which is itself a loanword from Taíno , which means "treeless grassland" in the West Indies . The letter b in Spanish, when positioned in

864-554: The Australian savanna, mammals in the family Macropodidae predominate, such as kangaroos and wallabies, though cattle, horses, camels, donkeys and the Asian water buffalo , among others, have been introduced by humans. It is estimated that less than three percent of savanna ecosystems can be classified as highly intact. Reasons for savanna degradation are manifold, as outlined below. Savannas are subject to regular wildfires and

912-505: The East African savannas, Acacia , Combretum , baobabs , Borassus , and Euphorbia are a common vegetation genera. Drier savannas there feature spiny shrubs and grasses, such as Andropogon , Hyparrhenia , and Themeda . Wetter savannas include Brachystegia trees and Pennisetum purpureum , and elephant grass type. West African savanna trees include Anogeissus , Combretum , and Strychnos . Indian savannas are mostly cleared, but

960-527: The Northern Territory, Australia savanna, and 480,000 ha of savanna were being cleared annually in Queensland in the 2000s, primarily to improve pasture production. Substantial savanna areas have been cleared of woody vegetation and much of the area that remains today is vegetation that has been disturbed by either clearing or thinning at some point in the past. Clearing is carried out by

1008-579: The administration are framed by the Ministry of Local Government. The major activities of the council are Tribal Administration, Remote Area Development and Local Governance. The executive powers of the council are vested on a commissioner appointed by the central government. Technical services wing of the Department of Local Government is responsible for developing roads, infrastructure in villages like water supply, schools and recreational facilities. All

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1056-415: The court of the cacique Carlos in present-day Panama . The accounts are inexact, but this is usually placed in present-day Madugandí or at points on the nearby Guna Yala coast opposite Ustupo or on Point Mosquitos . These areas are now either given over to modern cropland or jungle . Many grassy landscapes and mixed communities of trees, shrubs, and grasses were described as savanna before

1104-436: The decade was 1.85. Kgalagadi's population represents 2.49 per cent of the total population of Botswana. The majority of employees (in 2011 there were 10,530 people in work) were working within the transport & communication and public administration sectors. The district is administered by a district administration and district council. Kgalagadi borders Omaheke Region, Namibia in the northwest, Hardap Region, Namibia in

1152-428: The district. As of 2006, 3,353 were involved in agriculture, 294 in construction, 774 in education, 86 in electricity and water, 32 in finance, 344 in health, 375 in hotels and restaurants, 413 in manufacturing, 91 in other community services, 842 in private households, 1,880 in public administration, 195 in real estate, 65 in transport and communications, 1,786 in wholesale and retail trade. The total number of workers

1200-414: The east. The main towns in the municipality are Ganyesa , Pomfret , Morokweng and Piet Plessis . According to the 2011 census , the municipality has a population of 105,789. The majority of this population, 96.0%, described themselves as " Black African "; there are small minorities of those who describe themselves as " White " (2.1%) and " Coloured " (1.4%). 90.3% of the population speak Setswana as

1248-566: The ecosystem appears to be the result of human use of fire. For example, Native Americans created the Pre-Columbian woodlands of North America by periodically burning where fire-resistant plants were the dominant species. Aboriginal burning appears to have been responsible for the widespread occurrence of savanna in tropical Australia and New Guinea , and savannas in India are a result of human fire use. The maquis shrub savannas of

1296-467: The establishment, growth and survival of plant species and in turn can lead to a change in woodland structure and composition. That being said, impact of grazing animals can be reduced. Looking at Elephant impact on Savannas, the overall impact is reduced in the presence of rainfall and fences. Large areas of Australian and South American savannas have been cleared of trees, and this clearing continues today. For example, land clearing and fracking threaten

1344-483: The grazing industry in an attempt to increase the quality and quantity of feed available for stock and to improve the management of livestock. The removal of trees from savanna land removes the competition for water from the grasses present, and can lead to a two to fourfold increase in pasture production, as well as improving the quality of the feed available. Since stock carrying capacity is strongly correlated with herbage yield, there can be major financial benefits from

1392-568: The lower limits of savanna tree coverage as 5–10% and upper limits range as 25–80% of an area. Two factors common to all savanna environments are rainfall variations from year to year, and dry season wildfires . In the Americas , e.g. in Belize , Central America , savanna vegetation is similar from Mexico to South America and to the Caribbean . The distinction between woodland and savanna

1440-591: The mean sea level. The vegetation type is Savannah , with tall grasses, bushes and trees. The annual precipitation is around 25 cm (9.8 in), most of which is received during the summer season from November to May. Most of the rivers in the region are seasonal, with Limpopo River , which are prone to flash floods , being the most prominent. The tourist and game reserves in the region are Ghanzi , Central Kalahari Game Reserve , Deception Valley , Ghanzi Craft , Kgalagadi Transfrontier Park , Khutse Game Reserve and Kuru Museum and Cultural Centre . As of 2011,

1488-465: The middle of a word, is pronounced almost like an English v; hence the change of grapheme when transcribed into English. The word originally entered English as the Zauana in a description of the ilands of the kinges of Spayne from 1555. This was equivalent in the orthography of the times to zavana (see history of V ). Peter Martyr reported it as the local name for the plain around Comagre,

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1536-425: The middle of the 19th century, when the concept of a tropical savanna climate became established. The Köppen climate classification system was strongly influenced by effects of temperature and precipitation upon tree growth, and oversimplified assumptions resulted in a tropical savanna classification concept which considered it as a "climatic climax" formation. The common usage to describe vegetation now conflicts with

1584-469: The open structure of savannas allows the growth of a herbaceous layer and is commonly used for grazing domestic livestock. As a result, much of the world's savannas have undergone change as a result of grazing by sheep, goats and cattle, ranging from changes in pasture composition to woody plant encroachment . The removal of grass by grazing affects the woody plant component of woodland systems in two major ways. Grasses compete with woody plants for water in

1632-438: The potential to significantly alter the structure and composition of savannas worldwide, and have already done so in many areas through a number of processes including altering the fire regime, increasing grazing pressure, competing with native vegetation and occupying previously vacant ecological niches. Other plant species include: white sage, spotted cactus, cotton seed, rosemary. Human induced climate change resulting from

1680-431: The removal of trees, such as assisting with grazing management: regions of dense tree and shrub cover harbors predators, leading to increased stock losses, for example, while woody plant cover hinders mustering in both sheep and cattle areas. A number of techniques have been employed to clear or kill woody plants in savannas. Early pastoralists used felling and girdling , the removal of a ring of bark and sapwood , as

1728-585: The reserved ones feature Acacia, Mimosa , and Zizyphus over a grass cover comprising Sehima and Dichanthium . The Australian savanna is abundant with sclerophyllous evergreen vegetation, which include the eucalyptus , as well as Acacia, Bauhinia , Pandanus with grasses such as Heteropogon and kangaroo grass (Themeda). Animals in the African savanna generally include the giraffe, elephant, buffalo, zebra, gnu, hippopotamus, rhinoceros, and antelope, where they rely on grass and/or tree foliage to survive. In

1776-453: The same region. Savannas are also characterised by seasonal water availability, with the majority of rainfall confined to one season. They are associated with several types of biomes , and are frequently in a transitional zone between forest and desert or grassland , though mostly a transition between desert to forest. Savanna covers approximately 20% of the Earth's land area. Unlike

1824-515: The soil caused by the hooves of animals and through the erosion effects caused by the removal of protective plant cover. Such effects are most likely to occur on land subjected to repeated and heavy grazing. The effects of overstocking are often worst on soils of low fertility and in low rainfall areas below 500 mm, as most soil nutrients in these areas tend to be concentrated in the surface so any movement of soils can lead to severe degradation. Alteration in soil structure and nutrient levels affects

1872-591: The southwest, Northern Cape Province, South Africa in the south, North West Province, South Africa in the southeast and domestically, Ghanzi District in the north, Kweneng District in the northeast, and Southern District in the east. Kgalagadi means "land of the thirst". The largest settlement in the district is Tsabong , which had a population of 8939 in 2011 census while Hukuntsi and Kang had 4654 and 5985, respectively. Most part of Botswana has tableland slopes sliding from east to west. The region has an average elevation of around 915 m (3,002 ft) above

1920-606: The spread of weeds in savannas by the removal or reduction of the plants which would normally compete with potential weeds and hinder establishment. In addition to this, cattle and horses are implicated in the spread of the seeds of weed species such as prickly acacia ( Acacia nilotica ) and stylo ( Stylosanthes species). Alterations in savanna species composition brought about by grazing can alter ecosystem function, and are exacerbated by overgrazing and poor land management practices. Introduced grazing animals can also affect soil condition through physical compaction and break-up of

1968-493: The staff of the local administration expect District Administration are selected via Unified Local Government Services (ULGS) and the Ministry of Local Government is responsible for their training, deployment and career development. Kgalagadi consists of 2 sub-districts, namely: These sub-districts are further subdivided into 35 villages. Savannah A savanna or savannah is a mixed woodland - grassland (i.e. grassy woodland) biome and ecosystem characterised by

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2016-519: The structure of woodlands and geographic range of numerous woodland species. It has been suggested by many authors that with the removal or alteration of traditional burning regimes many savannas are being replaced by forest and shrub thickets with little herbaceous layer. The consumption of herbage by introduced grazers in savanna woodlands has led to a reduction in the amount of fuel available for burning and resulted in fewer and cooler fires. The introduction of exotic pasture legumes has also led to

2064-463: The topsoil and removal by grazing reduces this competitive effect, potentially boosting tree growth. In addition to this effect, the removal of fuel reduces both the intensity and the frequency of fires which may control woody plant species. Grazing animals can have a more direct effect on woody plants by the browsing of palatable woody species. There is evidence that unpalatable woody plants have increased under grazing in savannas. Grazing also promotes

2112-742: The total population of the district was 50,492 compared to 42,049 in 2001. The growth rate of population during the decade was 1.85. The population in the district was 2.49 per cent of the total population in the country. The sex ratio stood at 101.78 for every 100 males, compared to 101.18 in 2001. The average house hold size was 3.12 in 2011 compared to 4.31 in 2001. There were 1,576 craft and related workers, 628 clerks, 4,039 people working in elementary occupation 256 legislators, administrators and managers 614 Plant & machine operators and assemblers, 266 professionals, 1,278 service workers, shop and market sales workers, 1,309 skilled agricultural and related workers 771 technicians and associated professionals, making

2160-547: The total work force to 10,770. As of 2011, there were a total of 41 schools in the district, with no private schools. The total number of students in the Council schools was 8,869 while there were none in private schools. The total number of students enrolled in the district was 8,869: 4,211 girls and 4,658 boys. The total number of qualified teachers was 445, 315 female and 130 male. There were around 23 temporary teachers, 10 male and 13 female. There were no untrained teachers in

2208-506: The trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of grasses. Four savanna forms exist; savanna woodland where trees and shrubs form a light canopy, tree savanna with scattered trees and shrubs, shrub savanna with distributed shrubs, and grass savanna where trees and shrubs are mostly nonexistent. Savannas maintain an open canopy despite

2256-665: The world. Amongst the woody plant species are serious environmental weeds such as Prickly Acacia ( Acacia nilotica ), Rubbervine ( Cryptostegia grandiflora ), Mesquite ( Prosopis spp.), Lantana ( Lantana camara and L. montevidensis ) and Prickly Pear ( Opuntia spp.). A range of herbaceous species have also been introduced to these woodlands, either deliberately or accidentally including Rhodes grass and other Chloris species, Buffel grass ( Cenchrus ciliaris ), Giant rat's tail grass ( Sporobolus pyramidalis ) parthenium ( Parthenium hysterophorus ) and stylos ( Stylosanthes spp.) and other legumes . These introductions have

2304-464: Was 10,530: 6,334 male and 4,195 female. Botswana gained independence from the British in 1966 and adapted the colonial administration framework to form its district administration. The policies were modified during 1970-74 to address some of the basic issues. The district is administered by a district administration and district council which are responsible for local administration. The policies for

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