Location of Repository

Native bees mediate long-distance pollen dispersal in a shade coffee landscape mosaic

By Shalene Jha and Christopher W. Dick

Abstract

Coffee farms are often embedded within a mosaic of agriculture and forest fragments in the world???s most biologically diverse tropical regions. Although shade coffee farms can potentially support native pollinator communities, the degree to which these pollinators facilitate gene flow for native trees is unknown. We examined the role of native bees as vectors of gene flow for a reproductively specialized native tree, Miconia affinis, in a shade coffee and remnant forest landscape mosaic. We demonstrate extensive cross habitat gene flow by native bees, with pollination events spanning more than 1,800 m. Pollen was carried twice as far within shade coffee habitat as in nearby forest, and trees growing within shade coffee farms received pollen from a far greater number of sires than trees within remnant forest. The study shows that shade coffee habitats support specialized native pollinators that enhance the fecundity and genetic diversity of remnant native trees.

Topics: gene flow, shade coffee
Publisher: National Academy of Sciences
Year: 2011
DOI identifier: 10.1073/pnas.1002490107
OAI identifier: oai:deepblue.lib.umich.edu:2027.42/83287
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://hdl.handle.net/2027.42/... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.