Whether constructed using a supermatrix, supertree or other approaches, it is often possible (and always desirable) to attach estimates of statistical significance to features of such aggregate trees.
Using 16S rDNA trees as an explicit or implicit comparative criterion, these aggregate trees have been claimed [ 45] or used in practice [ 62- 64] as a vertical scaffold onto which LGT events can be mapped.
Another example can be found in analyses of Thermoplasma, which is a genus of hyperthermophilic euryarchaeotes that often branches near the base of the Archaea in aggregate trees [ 69, 70].
Apart from this, RAMI also creates randomized OTU accumulation curves and randomized Chao1 estimator curves (Lee and Chao, 1994), computes the Shannon index (Shannon and Weaver, 1949), visualizes clusters in phylogenetic trees with the aid of iTOL (Letunic and Bork, 2007), calculates the NRI and NTI indices and produces aggregated trees with clusters as OTUs.
This is the world's largest and most diverse aggregate of trees from the genus Moringa, which Olson believes are "uniquely suited to feeding poor and undernourished populations of the dryland tropics, especially in the era of climate change".
Random Forests [ 11] is an ensemble method that aggregates K trees similar to the ones constructed with CART, each one grown using a bootstrap sample of the original data set.
The aggregate of the tree crowns constitutes the canopy of the forest, and this may be displayed in a single layer or stratified into several layers, depending on the number and kinds of trees that make up the forest.
Mathematically, scores will aggregate 'up the tree,' where results will combine into a single risk attitude score for each individual alternative per country.
Cicadas are known to aggregate on younger trees, possibly because the light environment of host trees had a positive effect on their oviposition density [50].
