Biology – Quantitative Biology – Populations and Evolution
Scientific paper
2011-07-06
Biology
Quantitative Biology
Populations and Evolution
Key words: chemical ecology, community structure, oligolecty, pollen, polylecty, social bees, solitary bees, complex networks,
Scientific paper
Community ecologists are principally occupied with the proposition that natural assemblages of species exhibit orderliness and with identifying its causes. Plant-pollinator networks exhibit a variety of orderly properties, one of which is 'nestedness'. Nestedness has been attributed to various causes, but we propose a further influence arising from the phylogenetic structure of the biochemical constraints on the pollen diets of bees. We use an artificial assemblage as an opportunity to isolate the action of this mechanism. The properties of the network that we studied are consistent with the proposition that nestedness is caused by the phylogeny of diet range in bees, but the claim is preliminary and we propose that valuable progress in understanding plant-pollinator systems may be made through applying the techniques of chemical ecology at the community scale.
Cresswell James E.
Hernández Laura
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