Search results for ""author johan t. du toit""

Rangeland ecosystems which include unimproved grasslands, shrublands, savannas and semi-deserts, support half of the world’s livestock, while also providing habitats for some of the most charismatic of wildlife species. This book examines the pressures on rangeland ecosystems worldwide from human land use, over-hunting, and subsistence and commercial farming of livestock and crops. Leading experts have pooled their experiences from all continents to cover the ecological, sociological, political, veterinary, and economic aspects of rangeland management today. This book provides practitioners and students of rangeland management and wildland conservation with a diversity of perspectives on a central question: can rangelands be wildlands? The first book to examine rangelands from a conservation perspective Emphasizes the balance between the needs of people and livestock, and wildlife Written by an international team of experts covering all geographical regions Examines ecological, sociological, political, veterinary, and economic aspects of rangeland management and wildland conservation, providing a diversity of perspectives not seen before in a single volume

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During the nineteenth century, ivory hunting caused a substantial decrease of elephant numbers in southern Africa. Soon after that, populations of many other large and medium-sized herbivores went into steep decline due to the rinderpest pandemic in the 1890s. These two events provided an opportunity for woodland establishment in areas previously intensively utilized by elephants and other herbivores. The return of elephants to currently protected areas of their former range has greatly influenced vegetation locally and the resulting potential negative effects on biodiversity are causing concern among stakeholders, managers, and scientists. This book focuses on the ecological effects of the increasing elephant population in northern Botswana, presenting the importance of the elephants for the heterogeneity of the system, and showing that elephant ecology involves much wider spatiotemporal scales than was previously thought. Drawing on the results of their research, the authors discuss elephant-caused effects on vegetation in nutrient-rich and nutrient-poor savannas, and the potential competition between elephants on the one hand and browsers and mixed feeders on the other. Ultimately this text provides a comprehensive review of ecological processes in African savannas, covering long-term ecosystem changes and human-wildlife conflicts. It summarises new knowledge on the ecology of the sub-humid African savanna ecosystems to advance the general functional understanding of savanna ecosystems across moisture and nutrient gradients.

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Kruger National Park in South Africa has one of the most extensive sets of records of any protected area in the world, and throughout its history has supported connections between science and management. In recognition of that long-standing tradition comes The Kruger Experience, the first book to synthesize/summarize a century of ecological research and management in two million hectares of African savanna. The Kruger Experience places the scientific and management experience in Kruger within the framework of modern ecological theory and its practical applications. The book uses a cross-cutting theme of ecological heterogeneity -- the idea that ecological systems function across a full hierarchy of physical and biological components, processes, and scales, in a dynamic space-time mosaic. Contributors, who include many esteemed ecologists who have worked in Kruger in recent years, examine a range of topics covering broad taxonomic groupings and ecological processes. The book's four sections explore: the historical context of research and management in Kruger, the theme of heterogeneity, and the current philosophy in Kruger for linking science with management; the template of natural components and processes, as influenced by management, that determine the present state of the Kruger ecosystem; how species interact within the ecosystem to generate further heterogeneity across space and time; humans as key components of savanna ecosystems; In addition to the editors, contributors include William J. Bond, Jane Lubchenco, David Mabunda, Michael G.L. ("Gus") Mills, Robert J. Naiman, Norman Owen-Smith, Steward T.A. Pickett, Stuart L. Pimm, and Robert J. Scholes. The book is an invaluable new resource for scientists and managers involved with large, conserved ecosystems as well as for conservation practitioners and others with interests in adaptive management, the societal context of conservation, links between research and management in parks, and parks/academic partnerships.

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