Palaeontology, Journal Year: 2024, Volume and Issue: 67(3)
Published: May 1, 2024
Abstract The objective determination of boundaries bioregions is a nontrivial problem. Here we present new method family, HespDiv, and an algorithm for its implementation in R package: hespdiv. hespdiv performs iterative hierarchical nonlinear spatial subdivisions taxic data into topologically contiguous geographic regions. Bioregions obtained this way can be viewed as realistic causally important entities belonging to eco‐genealogical Bretskyan hierarchy. possibilities the are successfully demonstrated on Miocene mammal from United States, where set was determined. works decision‐tree‐like manner by generating multiple split‐lines, that each subdivide study area two parts per iteration region. performance split‐line measured using combination generalization comparison functions custom made or selected pre‐set subdivision methods. In iteration, best used produce subdivision, until no more adequate split‐lines found. process results hierarchy distribution taxonomic occurrences space. Benefits include delineation spatially clusters, flexibility, unique representations tree. package shown effective determining significant structures biota, so called geobiomes, sufficiently sampled time intervals flexibility ease use approach allows application whole range palaeo‐variables environmental proxies.
Language: Английский
