A 'large infrequent disturbance' in an East African savanna
نویسندگان
چکیده
منابع مشابه
Herbivory on Acacia seedlings in an East African savanna
Trees critically affect the functioning of savanna ecosystems through their effects on nutrient cycling, water availability, and patterns of space use by wildlife. Therefore, whatever factors influence successful recruitment of tree seedlings are important filters controlling savanna ecosystem function. In African savannas, large mammals have been considered the most important agents of mortali...
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Biodiversity loss can alter disease transmission; however, the magnitude and direction of these effects vary widely across ecosystems, scales, and pathogens. Here we experimentally examine the effects of one of the most globally pervasive patterns of biodiversity decline, the selective loss of large wildlife, on infection probability, intensity and population size of a group of common rodent-bo...
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www.sciencemag.org (this information is current as of January 12, 2008 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/319/5860/192 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/319/5860/192/DC1 can be foun...
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1. The effect of livestock on African rangelands has been a major focus of recent research, but little attention has been paid to the way livestock affects the distribution and availability of soil nutrients. In East African savannas, overnight containment of livestock in thorn-scrub corrals or ‘bomas’ concentrates large quantities of nutrients into small areas, potentially altering the landsca...
متن کاملBreakdown of an ant-plant mutualism follows the loss of large herbivores from an African savanna.
Mutualisms are key components of biodiversity and ecosystem function, yet the forces maintaining them are poorly understood. We investigated the effects of removing large mammals on an ant-Acacia mutualism in an African savanna. Ten years of large-herbivore exclusion reduced the nectar and housing provided by plants to ants, increasing antagonistic behavior by a mutualistic ant associate and sh...
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ژورنال
عنوان ژورنال: African Journal of Ecology
سال: 2006
ISSN: 0141-6707,1365-2028
DOI: 10.1111/j.1365-2028.2006.00662.x