Grouped geographical regions tested as herds in AMOVA analyses
Wildlife Management Unit (WMU) names are given in Panel 1. Scenario 3 is the a priori model of herd management, based on migration patterns observed by Bergerud (1971). Bergerud includes the introduction of caribou from Central into St Anthony at the tip of the Northern Peninsula, and Merasheen Island, Placentia Bay. Scenario 2 gives a better fit to the genetic data: Central Newfoundland is divided into western and eastern units, and the northwestern Great Northern Peninsula is treated as a single herd.
An Analysis of Molecular Variance (AMOVA) is analogous to an Analysis of Variance (ANOVA), allowing for the peculiarities of molecular data (e.g., here the data are haploid mitochondrial DNA sequence frequencies). The AMOVA partition of genetic variance within, among, and across WMUs indicates structure. In essence, Fst is treated as a variance component, and is partitioned among different groupings of WMUs in each model. Models with a high degree of structure are of special interest.
After Figure 5 from Wilkerson et al. 2018; Text material © 2020 by Steven M. Carr