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20_01_2016, Gregory S. Gilbert, Plant disease and the maintenance of rare species in plant communities
20_01_2016, Gregory S. Gilbert, Plant disease and the maintenance of rare species in plant communities
Subido por ebddsa dsa, 21/01/16 12:35Versión 1.0
Abstract: Plant pathogens are thought to help maintain diversity in natural plant communities through negative density-dependent effects. Many studies have documented the effects of density of single host species on the spread of individual pathogens and disease development, but most such studies focus on special cases of pathogens with narrow host ranges or managed plant communities with low host diversity. However, we know that most plant pathogens can attack a number of alternative host species, and that host ranges show a significant phylogenetic structure, and that the natural history of different kinds of pathogens varies widely. This means that the spread and impact of disease in complex plant communities depends on the diversity, abundance, and phylogenetic relatedness of local plant species, and different kinds of pathogens may behave differently. Using studies of plant pathogens in California grassland and Panamanian tropical rain forest, I examine the roles of numerical and phylogenetic rarity in understanding the evolutionary ecology of plant disease.Descargar (524,6MB) Obtener la URL o la URL WebDAV.