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Journal of Historical Geography, 42 (2013): 100–109
This article analyses the dynamics and legacy of the divisive South African debate over the hydrological and ecological impact of exotic timber plantations that erupted before, during and after the Fourth Empire Forestry Conference, held throughout the country in 1935. It examines the geographies, environments and networks that caused forestry critics, spearheaded by the ecologist John F.V. Phillips, to challenge South Africa's afforestation programme at the Conference. Phillips' spirited criticisms of forestry helped to establish an interdisciplinary research programme studying the impacts of exotic trees from forestry, ecological and hydrological perspectives in the Jonkershoek Valley, outside of Stellenbosch, that ran from 1935 to 1995. The findings of this pioneering and globally significant interdisciplinary research programme shaped South African environmental policies related to forest hydrology, biodiversity management, invasive species control and fire dynamics until the late 1980s and early 1990s. This research is still utilised, albeit in fragmented forms, in present-day national water, forestry and environmental legislation.
This innovative interdisciplinary book focuses on the history, science, and policy of tree planting and water conservation in South Africa. South Africa’s forestry sector has sat—often controversially—at the crossroads of policy and scientific debates regarding water conservation, economic development, and biodiversity protection. Bennett and Kruger show how debates about the hydrological impact of exotic tree planting in South Africa shaped the development of modern scientific ideas and state policies relating to timber plantations, water conservation, invasive species control, and biodiversity management within South Africa as well as elsewhere in the world. Forestry and Water Conservation in South Africa shows how scientific research on the impact of exotic and native vegetation led to the development of a comprehensive national policy for conserving water, producing timber, and protecting indigenous species from invasive alien plants. Policies and laws relating to forests and water began to change in the late 1980s and early 1990s as a result of political and administrative changes within South Africa. This book suggests that the country’s contemporary policies towards timber plantations, guided by the National Water Act of 1998, need to be reconsidered in light of the authors’ findings. Bennett and Kruger also call for more interdisciplinary research and greater emphasis on integrated policies and management plans for forestry, invasive alien plants, water conservation, and biodiversity preservation.
First book reviews of both books!
Transactions of the Royal Society of South Africa, 2013
Finding ways to conserve limited water supplies while promoting economic development has been, and will continue to be, one of South Africa’s most enduring environmental challenges. South Africa’s forestry sector has sat – often controversially – at the crossroads of policy debates regarding both water conservation and economic development. This historical analysis examines how conflicts surrounding exotic afforestation led to the establishment of the Jonkershoek Forestry Research Station in 1935. It demonstrates how research findings from Jonkershoek formed the basis of a comprehensive national catchment management strategy that tried to harmonise the afforestation of exotic forests, the preservation of indigenous vegetation and the rights of downstream water users. This framework dominated water conservation policy discussions and outcomes from the late 1960s to the late 1980s. This programme fell into decline when catchment management was handed over to provinces in the late 1980s and a raft of new post-apartheid legislation and plans – the centrepiece being the National Water Act in 1998 – redirected research funding and forestry policies established between 1935 and 1994. In conclusion, we suggest that South Africa’s water policies, as they related to exotic forests, should be reviewed in light of broader historical, scientific and economic findings.
This article examines how invasions within a discrete geographic, cultural, and ecological context disproportionately shaped awareness of invasions in other places. Such ''model invasions'' have been valuable for catalyzing national and international interest in biological invasion since the 1980s. Specifically, this article traces how scientific and public perspectives of invasive introduced trees evolved in South Africa during the twentieth century. It argues that concerns about the impact of invasive introduced trees first developed in the Mediterraneanclimate region of the southwestern Cape Province during the 1940s and 1950s before emerging elsewhere in South Africa during the 1970s and early 1980s. Though there has been a nation-wide convergence in scientific and public views of invasive trees since the 1980s, there are still stark geographic and cultural knowledge divergences that hinder the effectiveness of contemporary invasive tree management efforts. This study suggests that geographical knowledge imbalances between regions should not be overlooked when historicizing or planning environmental management schemes at national scales.
Environment and History, 2010
Desiccationist discourses and fears dominated official concern in nineteenth and early twentieth century southern Africa grassland ecosytsems. When scientific forestry arrived in Cape Town, government bureaucracies changed and Africa's first forestry department was created. Yet there were few trees in southern African grassland ecosystems requiring a forest service. Tree planting was advocated. The introduction of alien trees and their spread from coast to interior preceded that of the concept of forestry. The earliest source of tree planting materials was Cape Town's Dutch East India Company's garden, established in 1652. Gardens as the primary source of trees and planting information was formalised in the nineteenth century with the rise of botanical gardens. Missionaries and settlers planted fruit and fuel trees for subsistence, and ornamentals for aesthetics while defining new frontiers. Despite officially sponsored tree planting competitions, it was private plantations of eucalyptus and acacia trees to supply the needs of mines, industry and the wattle bark export market, and not afforestation campaigns, that led to significant tree cover. Tree introductions did change southern African hydrologies, but not in the way imagined by anti-desiccationist campaigners: streams dried up and water tables dropped. Tree planting was regulated as a threat to South African water supplies in the late twentieth century, and plans were made to 'deforest' the landscape to enhance water storage.
In celebration of the year 2011 as the International Year of Forests, we have reviewed various reports and scientific articles that demonstrate the significance of plantation forests to the livelihoods of society. We found that plantation forests play a significant role through creation of employment, contribution to food security and provide diverse free environmental services. The main objective of this review is to raise awareness about the value of forests, challenges in plantation forests and to share knowledge that could promote sustainable forest management for the benefit of current and future generations.
2008
Plantation forestry is controversial and conflict-r idden. Even so, most such forests are well managed in South Africa; over 80% of the plantation forest estate in South Africa is certified as being sustainably managed in terms of the Forest ry Stewardship Council scheme. Plantation forests provide the only significant ren ewable resource for the lumber, paper and board products required to satisfy development need s. This paper addresses aspects of joint or overlapping forest and water policy in South Afr ica. Since proper governance begins with appropriate policy and its instruments, we therefor e examine relevant aspects of policy as well as of governance together, rather than governa nce lone. Available assessments indicate that South Africa’s development strategy is now being impeded by various shortages, including a shortage of forest products, and that this situation will worsen in future. In 1998, new provisions, for the licensing of stream flow reduction activities (in effe...
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Plantation forestry is controversial and conflict-ridden. Even so, most such forests are well managed in South Africa; over 80% of the plantation forest estate in South Africa is certified as being sustainably managed in terms of the Forestry Stewardship Council scheme. Plantation forests provide the only significant renewable resource for the lumber, paper and board products required to satisfy development needs. This paper addresses aspects of joint or overlapping forest and water policy in South Africa. Since proper governance begins with appropriate policy and its instruments, we therefore examine relevant aspects of policy as well as of governance together, rather than governance alone. Available assessments indicate that South Africa's development strategy is now being impeded by various shortages, including a shortage of forest products, and that this situation will worsen in future. In 1998, new provisions, for the licensing of stream flow reduction activities (in effect, only plantation forestry, for commercial purposes) took effect through the National Water Act. Government has instituted these new requirements in a manner that takes account of the complementary policy fields involved in such regulation, so as to achieve cooperative governance as required in the Constitution. This converges on an agreed procedure for administering applications, a procedure that is now in an advanced draft. The procedure involves 50 steps or activities and three government agencies who collectively form a Licence Assessment Advisory Committee for each province within which commercial forestry is practised. The steps in the process include several that are time-consuming and onerous. The annual rate of afforestation in South Africa has declined. Expansion since 1990 amounted to a mere 6,000ha. This trend is attributed at least in part to the new governance arrangements, rather than the new policies. This outcome conflicts with government's stated intent respecting forests, water and economic and social development. We examine possible causes of and remedies for this situation.
Austral Ecology, 2004
Understanding patterns and processes of habitat change is essential for managing and conserving forest fragments in anthropogenically altered landscapes. Digitized aerial photographs from 1944 and 1996 were examined for changes to the indigenous forest landscape in the Karkloof-Balgowan archipelago in KwaZulu-Natal, South Africa. Attributes relating to proximate land-use, patch shape, isolation and position in the landscape were used to determine putative causes of forest change. The total change in forest area was -5.7% (forest covered 6739 ha in 1996). This is contrasted with previous reports for the period 1880-1940 that estimated change in total forest area of up to -80%. Attrition was the predominant process of forest transformation between 1944 and 1996. Despite little overall change in forest area, 786 mostly small (<0.5 ha) forest patches were lost from the landscape, leaving 1277 forest patches in 1996. An increase in patch isolation, but no change in patch cohesion accompanied the changes in forest area. Ignoring patches that were eliminated, 514 patches decreased in area. This was partly a function of patch size, but the conversion of natural grassland to commercial plantation forestry in the matrix also influenced forest decline. Their small size and irregular shape caused forest patches in the region to be vulnerable to edge effects. Core area declined in a negative exponential way with increasing edge width and the total area of edge habitat exceeded that of core habitat at an edge width of only 50 m. Nevertheless, total core area decreased by only 2% (65 ha) between 1944 and 1996 because most of the eliminated patches were small and contained no core area. The large Karkloof forest (1649 ha) is a conservation priority for forest interior species, but the ecological role and biodiversity value of small forest patches should not be overlooked.
Forest Ecology and Management, 1996
It would appear from the proportion of South African forests in protected areas that the habitats of vertebrate species are well protected. However, this simple figure is misleading. Firstly, the small total area of remaining forests (3000 km') alters the vulnerability of the fauna. Secondly, a large proportion of the threatened fauna is restricted to forests and many are found in regions subject to heavy human exploitation. The apparent complacency regarding forest vertebrate conservation in South Africa requires re-evaluation in the light of this new information. The vulnerability of fauna must be carefully evaluated before management recommendations can be made, particularly for threatened species.
Journal of Environmental Management, 2012
and sharing with colleagues.
International Forestry Review, 2021
The role of forests in climate change mitigation and adaptation is one of the most contested concepts in international climate policy. • Climate and forest policies' targets are intrinsically connected in a way that the implementation of one can produce either a trade-off or synergy with the other. • To strengthen synergies between forestry and climate policies, there is a need for the explicit recognition of mutually supportive links between both policies. • To effectively integrate forest management discourses into climate policy, regulations and guidelines have to be grounded in the experiences and lessons of forest policy implementations. • Legislation and law enforcement alone will be insufficient to preserve forest integrity if policies do not promote local ownership, participation and local sustainable development.
Biological Conservation, 1980
Fire in the jynbos is a complex and much discussed phenomenon, yet little concrete evidence is available on the exact e lJects o/fire on this vegetation type. It is suggested that fire may have been responsiblejbr the elimination of a fvnbos tree element, and that a longer period (probably +_ 40 years) between fires may be more applicable than the present ~12)'ear regime advocated.
This article explains how South African foresters have selected, experimented with and successfully grown Australian genera and species of trees in plantations during the past 130 years. First in the Cape Colony in the 1880s and 1890s, and later elsewhere in South Africa in the twentieth century, foresters developed theoretical techniques to find climates similar to those in southern Africa in order to select exotic species of trees from those regions. They then tested these species in experimental arboreta and plantations across South Africa to select the most successful and valuable species to grow commercially in each area. This globally unique and ultimately successful research programme arose in response to local environmental constraints, an increasing demand for timber, and the difficulties that foresters and white settlers faced when trying to select and grow Australian trees. This article revises historical understandings of the development of silviculture in South Africa and intervenes in current scientific and popular debates over Australian trees in South Africa.
A number of Australian trees -particularly acacias ('wattles' or 'mimosas') and eucalypts -have been cultivated over large areas of South Africa for the forest industry. They have become quite controversial in recent years for their alleged impacts on water resources and native biodiversity. In post-Apartheid South Africa, government poverty alleviation policies paradoxically engage poor rural blacks to both rip out these water-hungry 'alien invasive' trees while also encouraging people to plant them in small-scale plantations as part of black economic empowerment. This paper investigates how such a paradoxical situation arises and its impacts on specific rural landscapes and livelihoods, using the case of the black wattle (Acacia mearnsii) in the eastern highveld of Mpumalanga province. It traces the development of competing policy discourses (environmental, forest industry, rural livelihoods) and presents a case study of their impacts on local landscapes and livelihoods.
Forest Ecology and Management, 2002
Invasive alien plants are consumptive water-users, and may have reduced river flows in South Africa by about 6.7% according to a broad-scale study. An effective programme to bring the invasions under control would cost about US$ 92 million per year for the next 20 years. This paper reports on studies of four representative catchments (the Sonderend, Keurbooms, Upper Wilge and Sabie-Sand) to assess the impacts and costs of invasions at a scale that is more relevant to managers. Several alien plant species have invaded the catchments. Non-riverine invasions are mainly Pinus and Hakea species in Sonderend and Keurbooms, eucalypts in the Upper Wilge, and pines and scramblers (e.g. Lantana camara) in the Sabie-Sand catchment. Riverine invasions are dominated by Acacia mearnsii and, to a lesser extent, A. dealbata, except in the Sabie-Sand and the lower Sonderend River where Eucalyptus species are important. About 44% of the Sonderend, 54% of the Keurbooms, 2% of the Upper Wilge and 23% of the Sabie-Sand catchments has been invaded to some degree. The corresponding reductions in the natural river flows attributed to these invasions are about 7.2, 22.1, 6.0 and 9.4%. If the invasions are not controlled they could potentially spread, and occupy 51, 77, 70%, respectively, of the first three catchments. At an annual expansion rate of 10-15% this would take about 13, 26 and 63 years, respectively. The invadable areas in the Sabie-Sand catchment are already invaded so invasions will only increase in density. It would take about 26-30 years to reach 100% canopy cover. The projected flow reductions for the four catchments would increase to 41.5, 95.5, 25.1 and 22.3%, respectively. The estimated cost of the control programmes to prevent these losses would be about US$ 13.2, 9.9, 4.1 and 6.6 million for the Sonderend, Keurbooms, Upper Wilge and Sabie-Sand catchments, respectively. Should the catchments be allowed to become fully invaded before control operations were started, then the costs would rise to US$ 86.5, 20.5, 278.0 and 11.1 million, respectively. The impacts and costs are significant and are comparable with those calculated independently for other South African catchments. Water is acknowledged to be a key constraint to economic growth in South Africa and there is considerable pressure for efficient and sustainable use of the limited water resources. The projected impacts would justify control programmes aimed at clearing alien invaders for water conservation. #
In the late 19th and early 20th centuries, botanists in South Africa’s Western Cape felt hard-pressed to popularize and protect the unique indigenous Fynbos flora of the region. They saw themselves ranged against the extensive transformations of the landscape being undertaken by farmers and foresters, the expansion of urban areas and infrastructure, and the depredations of flower pickers. The introduction of a suite of invasive alien plants into the region in the 19th century, notably a range of Australian species well suited to the poor nutrients and rainfall and fire regimes of the region, presented a physical but also a symbolic focus for their advocacy. In the early 20th century this was played out in the context of political attempts to build unity among the English and Afrikaner populations after the South African War ended in 1902. However, the ecological theory imported with the experts arriving from Britain in the period of reconstruction, as influential a biological invasi...
Environmental Conservation, 2013
Fuelwood is the dominant source of energy used by most rural households in southern Africa to meet daily domestic energy requirements. Due to limited financial resources, most rural households are unable to make the transition to electricity thus they remain dependant on the woodlands surrounding their settlements as a source of cheap energy. Unsustainable fuelwood harvesting due to increasing demand as a result of growing human populations may result in environmental degradation particularly in the high-density, communal savannah woodlands of South Africa. Evaluating the sustainability of current fuelwood harvesting patterns requires an understanding of the environmental impacts of past logging practices to establish patterns of woodland degradation. This study evaluates impacts of fuelwood harvesting from 1992-2009 on the woodland structure and species composition surrounding two rural villages located within the Kruger to Canyons Biosphere Reserve (Mpumalanga Province, South Africa). Both villages (Welverdiend and Athol) were of similar spatial extent and exhibited similar socioeconomic characteristics. The total wood stock in the communal woodlands of both villages declined overall (with greater losses seen in Welverdiend) and, in Welverdiend, there were also changes in the woodland structure and species diversity of the species commonly harvested for fuelwood over this period. The woodlands in Welverdiend have become degraded and no longer produce fuelwood of preferred species and stem size in sufficient quantity or quality. The absence of similar negative impacts in Athol suggests more sustainable harvesting regimes exist there because of the lower human population and lower fuelwood extraction pressure. The Welverdiend community has annexed neighbouring unoccupied private land in a social response to fuelwood scarcity. Athol residents behaved similarly during drought periods. The potential for future conflict with neighbouring conservation areas within the Kruger to Canyons Biosphere is high if
Vegetation History and Archaeobotany, 2009
Understanding the interplay between climatic and anthropogenic factors is a major challenge in palaeoecology. In particular, it is often difficult to distinguish anthropogenic and ''natural'' fire in the charcoal record. In this paper, analysis of fossil pollen, charcoal, diatoms and isotopic evidence from Mapimbi, a small lake in the Kruger National Park, South Africa, suggests that for most of the past ca. 700 years, the riverine gallery forests surrounding Mapimbi were primarily influenced by climate, and benefited during warmer, wetter periods. The transitions between four, statistically different phases in the time-series data coincide with regional climate records previously constructed from speleothem data, and are consistent with the transition from the medieval warm period ending in the 14th century A.D. to the cooler, drier conditions prevailing during the little ice age of ca. A.D. 1400-1800. The data also suggest a period of significant, anthropogenic influence after A.D. 1800, when maize was grown and the incidence of localised fires increased. An increase in woody cover in recent decades may be associated with the management of the area by Kruger National Park. A decline in cultivation occurred in the end of the 20th century linked with changes in socio-political organisation.
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