DOI: 10.5061/dryad.prr4xgxp6
title: Data from: Ancestral area analyses reveal Pleistocene-influenced evolution in a clade of Coastal Plain endemic plants

description: AIM: The North American Coastal Plain is currently recognized as a global
 biodiversity hotspot. However, the mechanisms driving high levels of
 species richness in a region with relatively low topographic relief and
 homogeneous climate are unclear. We investigated the evolutionary
 processes driving ancestral area evolution and diversification in a
 biodiversity hotspot from both a systematic and biogeographic context
 using a clade endemic to the hotspot. LOCATION: North American Coastal
 Plain TAXON: The Scrub Mint clade comprises Dicerandra,
 Conradina, Piloblephis, Stachydeoma, and four species of Clinopodium
 (Mentheae; Lamiaceae), almost all of which are endemic to the North
 American Coastal Plain.  METHODS: We generated a dated phylogeny
 using a target enrichment/capture dataset and then calculated ancestral
 area using biogeographic models. We uncovered neo- and paleo-endemism
 hotspots and inferred ancestral potential ranges at each node based on
 ancestral niche reconstructions and paleoclimatic data to understand the
 geographic range evolution of subclades. 
 RESULTS: Ancestral area for the SMC was inferred to be the
 Florida Panhandle/Apalachicola River basin. A diversification event likely
 happened around the mid-Pleistocene Transition. Endemism hotspots were
 recovered in NE Florida, the Atlantic Coastal Ridge, and along the Lake
 Wales Ridge. Reconstructions of potential ranges support biogeographic
 findings, with the ancestor of the SMC likely located in the vicinity of
 the northeastern Gulf Coast during interglacial and glacial periods. MAIN
 CONCLUSIONS: The timing of diversification events and colonization of new
 areas by ancestors of the SMC is consistent with the timing of major
 geological events in the region. The presence of multiple types of
 endemism highlights the complexity of evolutionary and ecological
 processes that foster the large number of endemic taxa found in this
 region. Efforts to identify hotspots in this region will be critical to
 preserving the remaining pockets of biodiversity threatened by global
 change.
description: ## Provenance for this README * File name:
 README_Dataset-AncestralAreaScrubMints.md * Authors: Andre A Naranjo *
 Other contributors: Ryan Folk, Matthew Gitzendanner, Douglas Soltis,
 Pamela Soltis * Date created: 2022-04-19 * Date modified: 2023-11-28 ##
 Dataset Version and Release History * Current Version: * Number: 2.0.0 *
 Date: 2023-11-28 * Persistent identifier: DOI: 10.5061/dryad.prr4xgxp6 *
 Summary of changes: n/a # Data and File Overview ## Details for:
 supermatrix\_species.nxs Description: an aligned Nexus file with all genes
 and loci used to run phylogenetic analyses. Size: 8.56 MB Notes on this
 file: There are 242 genes included in this matrix for 24 species (g010
 failed to be sequenced entirely). Of those, 238 were used to build the
 gene trees for subsequent analyses. The genes that were left out are as
 follows: DNA, g017.FNA = 20212-21966 DNA, g098.FNA = 130980-131237 DNA,
 g163.FNA = 218581-218870 DNA, g191.FNA = 265276-266230 ## Details for:
 Partitions.txt Description: A list of the gene partitions used to build
 the individual gene trees used in our analyses. Size: 7.10 KB Notes on
 this file: None ## Details for: all\_bipart\_names.tre Description: A file
 containing all of the nuclear gene trees used in our analyses. Displayed
 in Newick format. Size: 150 KB Notes on this file: None
 \==================================== END OF README