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61-461: Because of its rather high rainfall compared to most other parts of Namibia and its location on the Kavango River after which it was named, this region has agricultural potential for the cultivation of a variety of crops, as well as for organised forestry and agro-forestry, which stimulates furniture making and related industries. Kavango West and its sister region Kavango East are nevertheless

122-561: A 250 km pipeline to divert water from the river into Namibia to help relieve the drought. Botswana, however, uses the Okavango Delta for both tourism income and a water source. The Department of Water Affairs in Botswana has submitted that 97% of the water in the river is lost through evaporation, so the country cannot afford to lose any extra water. Namibia, in turn, has argued that it will only divert half of one percent of

183-451: A back fire is the term given to the process of lighting vegetation in such a way that it has to burn against the prevailing wind. This produces a slower moving and more controllable fire. Controlled burns utilize back burning during planned fire events to create a "black line" where fire cannot burn through. Back burning or backfiring is also done to stop a wildfire that is already in progress. Firebreaks are also used as an anchor point to start

244-442: A big flood year, the seasonal swamp stretches to 150 km across from east to west; one of the factors that leads to the ever-changing nature of the delta is the flatness of the area. If one were to take a cross section of the delta at its widest point, one would find that the height variation from the mean over that 150 km is less than 2 m, which means that a minor sand deposition can cause major changes. In very wet years,

305-451: A burn-off. In industrialized countries, controlled burning regulations and permits are usually overseen by fire control authorities. Controlled burns are conducted during the cooler months to reduce fuel buildup and decrease the likelihood of more dangerous, hotter fires. Controlled burning stimulates the germination of some trees and reveals soil mineral layers which increases seedling vitality. In grasslands , controlled burns shift

366-402: A fuel ladder and begin an active crown fire . Predictions show thinned forests lead to a reduction in fire intensity and flame lengths of forest fires compared to untouched or fire-proofed areas. Aerial ignition is a type of controlled burn where incendiary devices are released from aircraft. There are two basic causes of wildfires . One is natural, mainly through lightning, and the other

427-900: A higher than usual flow into the Okavango, turning swathes of outlying desert into a huge wetland. Although the summer rains fall in Angola in January, they take a whole month to travel the first 1,000 km of the Okavango River, and then they take a further four months to filter through the plants and numerous channels of the final 250 km of the delta. As a result, the flood is at its biggest sometime between June and August, during Botswana's dry winter months. The delta then swells to three times its permanent size, attracting animals from kilometres around and creating one of Africa's greatest concentrations of wildlife . At its widest point in

488-429: A line of fires along natural or man-made features such as a river, road or a bulldozed clearing. Head fires, that burn with the prevailing wind, are used between two firebreaks because head fires will burn more intensely and move faster than a back burn. Head fires are used when a back burn would move too slowly through the fuel either because the fuel moisture is high or the wind speed is low. Another method to increase

549-553: A long-term cumulative reduction in greenhouse gas emissions. One working example is the West Arnhem Fire Management Agreement, started to bring "strategic fire management across 28,000 square kilometres (11,000 sq mi) of Western Arnhem Land" to partially offset greenhouse gas emissions from a liquefied natural gas plant in Darwin , Australia. Deliberately starting controlled burns early in

610-455: A part of the Kalahari was a massive lake, known as Lake Makgadikgadi . In this time, the Okavango would have been one of its largest tributaries. Both Namibia and Botswana experience drought, and as a result, concerns have been expressed about possible conflict over use of the river's water. Namibia has built a water canal, measuring about 300 km long, and has proposed a project to build

671-600: A part of the river's flow may extend along the Magweggana River (actually a northeastern distributary of the Okavango Delta) and enter the Zambezi River , bypassing the Kalahari. The river carries annually 28,000 tonnes of suspended sediment and a similar amount of bedload to the terminal swamps. Most of the particulate sediment carried by the river is fine sand, with some silt and mud, thanks to

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732-406: A unique evolution with fire, quickly replacing damaged buds or stems in the case of danger . They also carry their seeds in capsules which can be deposited at any time of the year . During a wildfire, the capsules drop nearly all of their seeds and the fire consumes the eucalypt adults, but most of the seeds survive using the ash as a source of nutrients. At their rate of growth, they quickly dominate

793-482: A way that benefited humans and wildlife in forests and grasslands by starting low-intensity fires that released nutrients for plants, reduced competition for cultivated species, and consumed excess flammable material that otherwise would eventually fuel high-intensity, catastrophic fires. The use of controlled burns in North America ended in the early 20th century, when federal fire policies were enacted with

854-627: A wick at the end that is used to ignite the lines of fire. Safe zones are established to ensure personnel know where the fire cannot cross either because of natural barriers like bodies of water or human-made barriers like tilled earth. During ignition, the Burn Boss relays information about the fire (flame length, flame height, the percent of ground that has been blackened) to the Communications Officer who documents this information. The Communications Officer relays information about

915-449: Is a land management tool. Fire was a part of the landscapes of Ontario until early colonial rule restricted indigenous culture in across Canada. During colonization, large scale forest fires were caused by sparks from railroads and fire was used to clear land for agriculture use. The public perception of forest fires was positive because the cleared land represented taming the wilderness to an urban populace. The conservation movement, which

976-471: Is human activity. Controlled burns have a long history in wildland management. Fire has been used by humans to clear land since the Neolithic period. Fire history studies have documented regular wildland fires ignited by indigenous peoples in North America and Australia prior to the establishment of colonial law and fire suppression. Native Americans frequently used fire to manage natural environments in

1037-501: Is seen as one component of shifting cultivation , as a part of field preparation for planting. Often called field burning, this technique is used to clear the land of any existing crop residue as well as kill weeds and weed seeds. Field burning is less expensive than most other methods such as herbicides or tillage, but because it produces smoke and other fire-related pollutants, its use is not popular in agricultural areas bounded by residential housing. Prescribed fires are broadly used in

1098-532: Is subdivided into eight electoral constituencies : In the 2015 regional elections SWAPO won in all eight constituencies. SWAPO also won all constituencies in the 2020 regional election , all of them by a landslide, and with overall more than 90% of the votes. The first Governor of Kavango West was Samuel Mbambo , former Governor of the Kavango Region and sitting Governor of Kavango East. On 27 April 2014 Sirkka Ausiku , formerly Permanent Secretary of

1159-444: Is the practice of intentionally setting a fire to change the assemblage of vegetation and decaying material in a landscape. The purpose could be for forest management , ecological restoration , land clearing or wildfire fuel management. A controlled burn may also refer to the intentional burning of slash and fuels through burn piles. Controlled burns may also be referred to as hazard reduction burning , backfire , swailing or

1220-456: Is used by farmers for plant health reasons under several restrictions in cross-compliance regulations. In the north of Great Britain , large areas of grouse moors are managed by burning in a practice known as muirburn. This kills trees and grasses, preventing natural succession, and generates the mosaic of ling (heather) of different ages which allows very large populations of red grouse to be reared for shooting. The peat-lands are some of

1281-646: Is very sparsely inhabited, while the northernmost strip, especially along the Kavango River , has a high population concentration. The region contains a multi-country conservation park and six locally managed wildlife reserves. ReconAfrica , a petroleum exploration company headquartered in Canada , has obtained exploration licenses for more than 13,600 square miles of land in the Kavango West region of Namibia and in Botswana . In January 2021 ReconAfrica announced

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1342-476: The Ministry of Regional and Local Government, Housing and Rural Development , was appointed. He kept his position in 2015 in president Hage Geingob 's new government. Kavango East and West Regional Health Directorate has the following facilities. Hospitals = 1. Health Centers = 2. Primary Health Care Clinics = 26. The region is characterised by an extremely uneven population distribution. The interior

1403-526: The Okavango Delta , and affect its health. In Angola, the upper reaches of the Cuito suffers clogging due to controlled burns of the vegetation, reducing water flow downstream as the accumulated water instead flows into the sand . Before it enters Botswana, the river drops 4 m (13 ft) in a series of rapids known as Popa Falls, visible when the river is low, as during the dry season. In

1464-544: The Yellowstone fires of 1988 occurred, which significantly politicized fire management. The ensuing media coverage was a spectacle that was vulnerable to misinformation. Reports drastically inflated the scale of the fires which disposed politicians in Wyoming, Idaho, and Montana to believe that all fires represented a loss of revenue from tourism. Paramount to the new action plans is the suppression of fires that threaten

1525-548: The soil , damaging it physically , chemically or sterilizing it. Broadcast burns tend to have lower temperatures and will not harm the soil as much as pile burning, though steps can be taken to treat the soil after a burn. In lop and scatter burning, slash is left to compact over time, or is compacted with machinery. This produces a lower intensity fire, as long as the slash is not packed too tightly. The risk of fatal fires that stem from burning slash can also be reduced by proactively reducing ground fuels before they can create

1586-493: The 20th century, fire control authorities began reintroducing controlled burns and indigenous leadership into land management. Controlled burning reduces fuels , improves wildlife habitat , controls competing vegetation, helps control tree disease and pests , perpetuates fire dependent species and improves accessibility . To improve the application of prescribed burns for conservation goals, which may involve mimicking historical or natural fire regimes, scientists assess

1647-405: The Kavango Region of Namibia and in Botswana . In January 2021 ReconAfrica announced the start of drilling operations on the first exploration well. Environmental activists have expressed concern that ReconAfrica’s plans for its test wells have not been properly vetted through Namibia’s environmental review process, however ReconAfrica and both the governments of Namibia and Botswana have stated that

1708-409: The age of a stand or the assemblage of species. To minimize the impact of smoke , burning should be restricted to daylight hours whenever possible. Furthermore, in temperate climates, it is important to burn grasslands and prairies before native species begin growing for the season so that only non-native species, which send up shoots earlier in the spring, are affected by the fire. Back burning or

1769-483: The company's activities have followed due process and that no fracking will occur. ReconAfrica’s drilling area is in the Kavango West region which contains a multicountry conservation park, six locally managed wildlife reserves, and one UNESCO World Heritage site, however the drilling license does not include any of these protected areas. Controlled burn A controlled or prescribed (Rx) burn

1830-426: The composition of plants from non-native species to native species. These controlled burns occur during the early spring before native plants begin actively growing, when soil moisture is higher and when the fuel load on the ground is low to ensure that the controlled burn remains low intensity. Controlled burns reduce the amount of understory fuel so when a wildfire enters the area, a controlled burn site can reduce

1891-592: The context of woody plant encroachment , with the aim of improving the balance of woody plants and grasses in shrublands and grasslands. In Northern-India, especially in Punjab , Haryana , and Uttar Pradesh , unregulated burning of agricultural waste is a major problem. Smoke from these fires leads to degradation in environmental quality in these states and the surrounded area. In East Africa, bird densities increased months after controlled burning had occurred. Controlled burns on Australian savannas can result in

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1952-497: The created of a prescribed burn program as well as training and regulation for controlled burns in Ontario. In British Columbia , there was an increase in the intensity and scale of wildfires after local bylaws restricted the use of controlled burns. In 2017, following one of the worst years for wildfire in the province's history, indigenous leadership and public service members wrote an independent report that suggested returning to

2013-529: The dry season results in a mosaic of burnt and unburnt country which reduces the area of stronger, late dry season fires; it is also known as "patch burning". Health and safety, protecting personnel, preventing the fire from escaping and reducing the impact of smoke are the most important considerations when planning a controlled burn. While the most common driver of fuel treatment is the prevention of loss of human life and structures, certain parameters can also be changed to promote biodiversity and to rearrange

2074-490: The fire has cleared non fire-adapted, competing species. Pyriscent species benefit from moderate-intensity fires in older stands; however, climate change is causing more frequent high intensity fires in North America. Controlled burns can manage the fire cycle and the intensity of regenerate fires in forests with pyriscent species like the boreal forest in Canada. Eucalyptus regnans or mountain ash of Australia also shows

2135-482: The geological makeup of the Okavango River catchment which is largely underlain by Kalahari sand. There is low concentration of dissolved solids in the river water - around 40 mg/L, made up mostly of silica, calcium and magnesium bicarbonates - but these dissolved solids form the largest component of sediment carried into the delta because the annual water volume is so large. During colder periods in Earth's history,

2196-593: The goal of suppressing all fires. Since 1995, the US Forest Service has slowly incorporated burning practices into its forest management policies. Fire suppression has changed the composition and ecology of North American habitats, including highly fire-dependent ecosystems such as oak savannas and canebrakes, which are now critically endangered habitats on the brink of extinction. In the Eastern United States, fire-sensitive trees such as

2257-412: The impact of variation in fire attributes. Parameters measured are fire frequency, intensity, severity, patchiness, spatial scale and phenology. Furthermore, controlled fire can be used for site preparation when mechanized treatments are not possible because of terrain that prevents equipment access. Species variation and competition can drastically increase a few years after fuel treatments because of

2318-412: The increase in soil nutrients and availability of space and sunlight. Many trees depend on fire as a way to clear out other plant species and release their seeds. The giant sequoia , among other fire-adapted conifer species, depends on fire to reproduce. The cones are pyriscent so they will only open after exposed to a certain temperature. This reduces competition for the giant sequoia seedlings because

2379-475: The increasing prevalence of climate change. As drought conditions worsen, North America has been facing an abundance of destructive wildfires. Since 1988, many states have made progress toward controlled burns. In 2021, California increased the number of trained personnel to perform controlled burns and created more accessibility for landowners. In the European Union, burning crop stubble after harvest

2440-516: The indigenous practice of prescribed fire. This was done against scientific evidence that supported prescribed burns as a natural process. At the loss to the local environment, colonies utilized fire suppression in order to benefit the logging industry. The notion of fire as a tool had somewhat evolved by the late 1970s as the National Park Service authorized and administered controlled burns. Following prescribed fire reintroduction,

2501-432: The intensity of the fire or prevent the fire from crossing the area entirely. A controlled burn prior to the wildfire season can protect infrastructure and communities or mitigate risks associated with many dead standing trees such as after a pest infestation when forest fuels are high. In the developing world, the use of controlled burns in agriculture is often referred to as slash and burn . In industrialized nations, it

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2562-415: The land and a new, like-aged eucalyptus forest grows. Other tree species like poplar can easily regenerate after a fire into a like-aged stand from a vast root system that is protected from fires because it is underground. Native grassland species in North America and Australia are adapted to survive occasional low intensity fires. Controlled burns in prairie ecosystems mimic low intensity fires that shift

2623-518: The largest carbon sinks in the UK, providing an immensely important ecological service. The governments has restricted burning to the area but hunters have been continuing to set the moors ablaze, releasing a large amount of carbon into the atmosphere and destroying native habitat. The Maasai ethnic group conduct traditional burning in savanna ecosystems before the rainy season to provide varied grazing land for livestock and to prevent larger fires when

2684-448: The loss of human life with leniency toward areas of historic, scientific, or special ecological interest. There is still a debate amongst policy makers about how to deal with wildfires. Senators Ron Wyden and Mike Crapo of Oregon and Idaho have been moving to reduce the shifting of capital from fire prevention to fire suppression following the harsh fires of 2017 in both states. Tensions around fire prevention continue to rise due to

2745-425: The mop up has finished, the Burn Boss declares the controlled burn over and local fire authorities are notified. There are several different methods used to burn piles of slash from forestry operations. Broadcast burning is the burning of scattered slash over a wide area. Pile burning is gathering up the slash into piles before burning. These burning piles may be referred to as bonfires . High temperatures can harm

2806-605: The poorest regions in Namibia. The Fourth Delimitation Commission of Namibia, responsible for recommending on the country's administrative divisions suggested in August 2013 to split the Kavango Region into two. The president Hifikepunye Pohamba enacted the recommendations. As a result, the new Regions of Kavango East and Kavango West have been created. As of 2020, Kavango West had 23,804 registered voters. The region

2867-481: The prescribed burn is divided into several roles; the Burn Boss, Communications, Suppression and Ignition. The planning process begins by submitting an application to a local fire management office and after approval, applicants must submit a burn plan several weeks prior to ignition. On the day of the controlled burn, personnel meet with the Burn Boss and discuss the tactics being used for ignition and suppression, health and safety precautions, fuel moisture levels and

2928-510: The protected areas. 18°15′S 18°55′E  /  18.250°S 18.917°E  / -18.250; 18.917 Kavango River The Okavango River (formerly spelt Okovango or Okovanggo), is a river in southwest Africa. It is known by this name in Botswana, and as Cubango in Angola, and Kavango in Namibia. It is the fourth-longest river system in southern Africa, running southeastward for 1,600 km (1,000 mi). It begins at an elevation of 1,300 metres (4,300 ft) in

2989-579: The rainy season, an outflow to the Boteti River in turn seasonally discharges to the Makgadikgadi Pans , which features an expansive area of rainy-season wetland where tens of thousands of flamingos congregate each summer. Part of the river's flow fills Lake Ngami . Noted for its wildlife , the Okavango area contains Botswana's Moremi Game Reserve . Every wet season, Angola receives three times more rainfall than Botswana, discharging

3050-581: The red maple are increasing in number, at the expense of fire-tolerant species like oaks. In the Anishinaabeg Nation around the Great Lakes , fire is a living being that has the power to change landscapes through both destruction and the regrowth and return of life following a fire. Human beings are also inexorably tied to the land they live on as stewards who maintain the ecosystems around them. Because fire can reveal dormant seedlings, it

3111-669: The river's flow, and that it is entitled to any water that flows through its territory. To deal with such issues, in September 1994, Angola, Namibia, and Botswana signed an agreement to form the Permanent Okavango River Basin Water Commission , to provide advice to the three countries about the best ways to share the Okavango River's resources. ReconAfrica , a petroleum exploration company headquartered in Canada , has obtained exploration licenses for more than 13,600 square miles of land in

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3172-479: The sandy highlands of Angola . Farther south, it forms part of the border between Angola and Namibia , and then flows into Botswana . The Okavango does not have an outlet to the sea. Instead, it discharges into the Okavango Delta or Okavango Alluvial Fan, in an endorheic basin in the Kalahari Desert . The Cuito River is a major tributary. The Cubango and Cuito Rivers are the principal tributaries of

3233-738: The species assemblage to primarily native grassland species. Some seeds , such as those of lodgepole pine , sequoia and many chaparral shrubs are pyriscent , meaning heat from fire causes the cone or woody husk to open and disperse seeds. Fire is a natural part of both forest and grassland ecology and has been used by indigenous people across the world for millennia to promote biodiversity and cultivate wild crops. Colonial law in North America and Australia displaced indigenous people from lands that were controlled with fire and prohibited from conducting traditional controlled burns. After wildfires began increasing in scale and intensity in

3294-493: The speed of a back burn is to use a flank fire which is lit at right angles to the prevailing wind and spreads in the same direction. In Ontario, Canada, controlled burns are regulated by the Ministry of Natural Resources and only trained personnel can plan and ignite controlled burns within Ontario's fire regions or if the Ministry of Natural Resources in involved in any aspect of planning a controlled burn. The team performing

3355-447: The start of drilling operations on the first exploration well. Environmental activists have expressed concern that ReconAfrica's plans for its test wells have not been properly vetted through Namibia's environmental review process, however ReconAfrica and both the governments of Namibia and Botswana have stated that the company's activities have followed due process and that no fracking will occur. The drilling license does not include any of

3416-461: The traditional use of prescribed burns to manage understory fuel from wildfires. The government of British Columbia responded by committing to using controlled burns as a wildfire management tool. The Oregon Department of Environmental Quality began requiring a permit for farmers to burn their fields in 1981, but the requirements became stricter in 1988 following a multi-car collision in which smoke from field burning near Albany, Oregon , obscured

3477-492: The vision of drivers on Interstate 5 , leading to a 23-car collision in which 7 people died and 37 were injured. This resulted in more scrutiny of field burning and proposals to ban field burning in the state altogether. With controlled burns, there is also a risk that the fires get out of control. For example, the Calf Canyon/Hermits Peak Fire , the largest wildfire in the history of New Mexico ,

3538-420: The weather (wind direction, wind speed, temperature and precipitation) for the day. On site, local fire control authorities are notified by telephone about the controlled burn while the rest of the team members fill drip torches with pre-mixed fuel, fill suppression packs with water and put up barricades and signage to prevent pedestrian access to the controlled burn. Driptorches are canisters filled with fuel and

3599-436: The wind speed and wind direction so the Burn Boss can determine how the direction of both flames and smoke and plan their lines of fire accordingly. Once the ignition phase has ended in a section, the suppression team "mops up" by using suppression packs to suppress smoldering material. Other tools used for suppression are RTVs equipped with a water tank and a pump and hose that is installed in a nearby body of water. Finally, once

3660-425: Was spearheaded by Edmund Zavitz in Ontario, caused a ban on all fires, both natural wild fires and intentional fires. In the 1970s, Parks Canada began implementing small prescribed burns however, the scale of wildfires each year outpaces the acreage of land that is intentionally burnt. In the late 1980s, the Ministry of Natural Resources in Ontario began conducting prescribed burns on forested land which led to

3721-604: Was started by two distinct instances of controlled burns, which had both been set by the US Forest Service , getting out of control and merging. The conflict of controlled burn policy in the United States has roots in historical campaigns to combat wildfires and to the eventual acceptance of fire as a necessary ecological phenomenon. Following colonization of North America, the US used fire suppression laws to eradicate

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