TAILIEUCHUNG - Plant reproductive susceptibility to habitat fragmentation: review and synthesis through a meta-analysis

The American Society for Reproductive Medicine (ASRM) is the specialty society for physicians that focus on infertility. The organization has a Practice Committee that issues regular reports, including guidelines on minimal standards for providing ART, informed consent, and on the number of embryos to be transferred in IVF procedures. The guidelines are distributed to all members of ASRM, are published in the Society's journal, Fertility and Sterility, and are available to the public on ASRM's website (). The ASRM Guidelines on Number of Embryos Transferred, updated in November 2009, recommend that when treating women under age 35 consideration should be given to transferring only one embryo at a. | Ecology Letters 2006 9 968-980 doi REVIEWS AND SYNTHESES Plant reproductive susceptibility to habitat fragmentation review and synthesis through a meta-analysis Ramiro Aguilar 1 Lorena Ashworth 1 Leonardo Galetto1 and Marcelo Adrian Aizen2 Instituto Multidisciplinario de Biologia Vegetal Universidad Nacional de Córdoba - CONICET CC495 5000 Cordoba Argentina 2Laboratorio Ecotono Universidad Nacional del Comahue Quintral 1250 8400 San Carlos de Bariloche Rio Negro Argentina Correspondence E-mail raguilar@ Abstract The loss and fragmentation of natural habitats by human activities are pervasive phenomena in terrestrial ecosystems across the Earth and the main driving forces behind current biodiversity loss. Animal-mediated pollination is a key process for the sexual reproduction of most extant flowering plants and the one most consistently studied in the context of habitat fragmentation. By means of a meta-analysis we quantitatively reviewed the results from independent fragmentation studies throughout the last two decades with the aim of testing whether pollination and reproduction of plant species may be differentially susceptible to habitat fragmentation depending on certain reproductive traits that typify the relationship with and the degree of dependence on their pollinators. We found an overall large and negative effect of fragmentation on pollination and on plant reproduction. The compatibility system of plants which reflects the degree of dependence on pollinator mutualism was the only reproductive trait that explained the differences among the species effect sizes. Furthermore a highly significant correlation between the effect sizes of fragmentation on pollination and reproductive success suggests that the most proximate cause of reproductive impairment in fragmented habitats may be pollination limitation. We discuss the conservation implications of these findings and give some suggestions for future research

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