Fragmentation in Semi-Arid and Arid Landscapes: Consequences by Kathleen A. Galvin, Robin S. Reid, Roy H. Behnke Jr., N.

By Kathleen A. Galvin, Robin S. Reid, Roy H. Behnke Jr., N. Thompson Hobbs

Exploring the concept that of fragmentation, the ecological tactics interrupted via fragmentation, and the social effects of fragmented landscapes, this booklet provides a well timed synthesis at the results of fragmentation on arid and semi-arid pastoral platforms during the global.

The international value of the world’s rangelands is huge, with those arid and semi-arid platforms making up nearly 25% of the earth’s landscapes – and helping the livelihoods of greater than 20 million humans. those ecosystems also are domestic to a number of of the planet’s final megafauna, in addition to different very important species. but fragmentation throughout those rangelands has considerably impaired the facility of either humans and animals to make amends for temporal heterogeneity in crops and water through exploiting its spatial heterogeneity, leading to constrained source availability.

The case is constructed that whereas fragmentation arises from diverse ordinary, social and fiscal stipulations around the globe it creates comparable results for human and typical platforms. With info from 9 websites worldwide the authors learn how fragmentation happens, the styles that consequence, and the implications of fragmentation for ecosystems and the folks who depend upon them. The ebook will supply a worthwhile reference for college kids and researchers in rangeland ecology, park and usual source administration, environmental and ecological anthropology, economics and agriculture.

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Extra info for Fragmentation in Semi-Arid and Arid Landscapes: Consequences for Human and Natural Systems

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We will refer to the first of these mechanisms as resource tracking. Temporal variability in production of vegetation and availability of water shapes virtually all ecological processes in arid and semi-arid lands (Ellis and Swift 1988, Illius et al. 1998, Illius and O’Connor 1999). This variability occurs over several temporal scales. Annual differences in precipitation among growing seasons create ten-fold differences in plant growth among years. Within years, there are seasonal differences in plant production and nutritional quality driven by precipitation and temperature.

Pastoral economy, property rights and traditional mutual assistance mechanisms among the Ngorongoro and Salei Maasai of Tanzania. IIED Drylands Programme, London, UK. Reid, R. , P. K. Thornton, and R. L. Kruska. 2004a. Loss and fragmentation of habitat for pastoral people and wildlife in East Africa: Concepts and issues. South African Journal of Grass and Forage Science 21:171-181. Reid, R. , P. K. Thornton, G. J. McCrabb, R. L. Kruska, F. Atieno, and P. G. Jones. 2004b. Is it possible to mitigate greenhouse gas emissions in pastoral ecosystems of the tropics?

Bulletin of the American Meteorological Society 79:815-830. Ostrom, E. 1990. Governing the commons: The evolution of institutions for collective action. Cambridge University Press, Cambridge, UK. Owen-Smith, N. 1987. Pleistocene extinctions - The pivotal role of megaherbivores. Paleobiology 13:351-362. Potkanski, T. 1997. Pastoral economy, property rights and traditional mutual assistance mechanisms among the Ngorongoro and Salei Maasai of Tanzania. IIED Drylands Programme, London, UK. Reid, R.

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