Telling ecological networks apart by their structure: A computational challenge
Fig 3
Left: overlaying more than 500 ecological networks representing either mutualistic or antagonistic interactions, we find that they do not cluster as nicely as the nonecological ones did, suggesting that there is much more variation within ecological network structure than between the classes of nonecological networks examined here. Right: this result holds when the networks are instead labeled according to the specific type of mutualism/antagonism they describe. PC1, principal component 1; PC2, principal component 2; var., variation.