Figure 2.

A subset of the full network illustrating concepts such as within-habitat connections (item 1), connections between habitats (item 2), connections that traverse phyla (item 3), and taxa that form bridging connections between other taxa that lack direct connections (item 4). Nodes are annotated by their species name, phylum and habitat annotation.

Hooper et al. Genome Biology 2009 10:R45   doi:10.1186/gb-2009-10-4-r45
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