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

Identifieur interne : 001A24 ( Main/Exploration ); précédent : 001A23; suivant : 001A25

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

Auteurs : Shalene Jha [États-Unis] ; Christopher W. Dick [États-Unis]

Source :

Proceedings of the National Academy of Sciences of the United States of America [ 0027-8424 ] ; 2010.

RBID : PMC:2922262

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.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2922262

DOI: 10.1073/pnas.1002490107
PubMed: 20660738
PubMed Central: 2922262

Affiliations:

Le document en format XML

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, 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.</p>
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Native bees mediate long-distance pollen dispersal in a shade coffee landscape mosaic

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

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Abstract

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