Soil Water Repellency
Soil Water Repellency

Author: C.J. Ritsema

Publisher: Elsevier

Published: 2012-12-02

Total Pages: 359

ISBN-13: 0080523218

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It has become clear that soil water repellency is much more wide-spread than formerly thought. Water repellency has been reported in most continents of the world for varying land uses and climatic conditions. Soil water repellency often leads to severe runoff and erosion, rapid leaching of surface-applied agrichemicals, and losses of water and nutrient availability for crops. At present, no optimum management strategies exist for water repellent soils, focusing on minimizing environmental risks while maintaining crop production. The book starts with a historical overview of water repellency research, followed by seven thematic sections covering 26 research chapters. The first section discusses the origin, the second the assessment, and the third the occurrence and hydrological implications of soil water repellency. The fourth section is devoted to the effect of fire on water repellency, section five deals with the physics and modeling of flow and transport in water repellent soils, section six presents amelioration techniques and farming strategies to combat soil water repellency, and section seven concludes the book with an extensive bibliography on soil water repellency.

Forestry and Water Conservation in South Africa
Forestry and Water Conservation in South Africa

Author: Brett Bennett

Publisher: ANU Press

Published: 2015-11-11

Total Pages: 289

ISBN-13: 1925022846

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This innovative interdisciplinary study 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.

Fire in South African Mountain Fynbos
Fire in South African Mountain Fynbos

Author: Brian W. van Wilgen

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 347

ISBN-13: 3642761747

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Ecologists are increasingly being drawn into the task of addressing problems of environmental degradation. They are expected to find solutions that will lead to sustainable resource use throughout the world. In doing so, the robustness of the science becomes increasingly important, and the problem of extrapolating the results of research conducted within what is usually a relatively limited geographical scope is increasingly highlighted. One approach to developing a globally robust ecology involves more or less formal intercontinental comparative studies, usually focused on the question of ecological convergence. These studies are directed at testing the prediction that similar physical and other environmental factors in different parts of the world, through their selective influences, will give rise to ecosystems which share com mon structural and functional features. Should this be true, the predictive power of ecology developed within such a framework should be sufficient to solve similar problems elsewhere in such biomes. There is a long history of such an approach in mediterranean type ecosystems, documented in a series of volumes and their accompanying scientific papers beginning with that of Di Castri and Mooney (1973).

Blue Revolution
Blue Revolution

Author: Ian R. Calder

Publisher: Taylor & Francis

Published: 2012-05-16

Total Pages: 382

ISBN-13: 1136570799

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'Blue Revolution upturns some environmental applecarts - not for the hell of it, but so we can manage our environment better.' Fred Pearce, New Scientist This updated and revised edition of The Blue Revolution provides further evidence of the need to integrate land management decision-making into the process of integrated water resources management. It presents the key issues involved in finding the balance between the competing demands for land and water: for food and other forms of economic production, for sustaining livelihoods, and for conservation, amenity, recreation and the requirements of the environment. It also advocates the means and methodologies for addressing them. A new chapter, 'Policies, Power and Perversity,' describes the perverse outcomes that can result from present, often myth-based, land and water policies which do not consider these land and water interactions. New research and case studies involving ILWRM concepts are presented for the Panama Canal catchments and in relation to afforestation proposals for the UK Midlands.

A Scientific Bibliography of the Drakensberg, Maloti and Adjacent Lowlands
A Scientific Bibliography of the Drakensberg, Maloti and Adjacent Lowlands

Author: Rodney Moffett

Publisher: UJ Press

Published: 2021-04-19

Total Pages: 552

ISBN-13: 1928424457

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This bibliography includes scientific articles on the Drakensberg, Maloti and Adjacent Lowlands published between 1808 and 2019. Although focussing on material appearing in accredited journals, there is such a wealth of information in the form of unpublished, yet traceable, reports, documents, presentations and dissertations, these are also included. The bibliography has two parts – a complete list arranged alphabetically, and the same references arranged in 33 different disciplines. These range from Palaeobotany with 17 entries, to Rock Art with 502 entries.

Biological Invasions in South Africa
Biological Invasions in South Africa

Author: Brian W. van Wilgen

Publisher: Springer Nature

Published: 2020-03-10

Total Pages: 972

ISBN-13: 3030323943

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This open access volume presents a comprehensive account of all aspects of biological invasions in South Africa, where research has been conducted over more than three decades, and where bold initiatives have been implemented in attempts to control invasions and to reduce their ecological, economic and social effects. It covers a broad range of themes, including history, policy development and implementation, the status of invasions of animals and plants in terrestrial, marine and freshwater environments, the development of a robust ecological theory around biological invasions, the effectiveness of management interventions, and scenarios for the future. The South African situation stands out because of the remarkable diversity of the country, and the wide range of problems encountered in its varied ecosystems, which has resulted in a disproportionate investment into both research and management. The South African experience holds many lessons for other parts of the world, and this book should be of immense value to researchers, students, managers, and policy-makers who deal with biological invasions and ecosystem management and conservation in most other regions.

Burning Table Mountain
Burning Table Mountain

Author: S. Pooley

Publisher: Springer

Published: 2014-09-19

Total Pages: 293

ISBN-13: 1137415444

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Cape Town's iconic Table Mountain and the surrounding peninsula has been a crucible for attempts to integrate the social and ecological dimensions of wild fire. This environmental history of humans and wildfire outlines these interactions from the practices of Khoikhoi herders to the conflagrations of January 2000. The region's unique, famously diverse fynbos vegetation has been transformed since European colonial settlement, through urbanisation and biological modifications, both intentional (forestry) and unintentional (biological invasions). In all the diverse visions people have formed for Table Mountain, aesthetic and utilitarian, fire has been regarded as a central problem. This book shows how scientific understandings of fire in fynbos developed slowly in the face of strong prejudices. Human impacts were intensified in the twentieth century, which provides the temporal focus for the book. The disjunctures between popular perception, expert knowledge, policy and management are explored, and the book supplements existing short-term scientific data with proxies on fire incidence trends recovered from historical records.