Data from: Mountain building, climate cooling and the richness of cold-adapted plants in the northern hemisphere ...

• Main Authors: Hagen, Oskar, Vaterlaus, Lisa, Albouy, Camille, Brown, Andrew, Leugger, Flurin, Onstein, Renske E., Novaes De Santana, Charles, Scotese, Christopher R., Pellissier, Löic
• Format: Dataset
• Language: English
• Published: Dryad 2019
• Subjects: cold-adapted plants; earth surface processes; Compositae; mountain; Leguminosae; Cyperaceae; Brassicaceae; orogeny; Arctic; arctic cryosphere
• Online Access: https://dx.doi.org/10.5061/dryad.0ff6b04; https://datadryad.org/stash/dataset/doi:10.5061/dryad.0ff6b04

Aim The summits of mountain ranges at mid-latitude in the Northern Hemisphere and the Arctic share many ecological properties including comparable climate and similar floras. We hypothesise that the orogeny during the Oligocene-Miocene combined with global cooling allowed the origin and early diversification of cold-adapted plant lineages in these regions. Before establishment of the Arctic cryosphere, adaptation and speciation in high elevation areas of these mountains ranges may have led to higher species richness when compared to the Arctic. Subsequent colonisation from mid-latitude mountain ranges to the Arctic may explain similar but poorer flora. Location Arctic-Alpine regions of the Northern Hemisphere. Methods We mapped the cold climate in the Northern Hemisphere for most of the Cenozoic (60 Ma until present) based on paleoclimate proxies coupled with paleoelevations. We generated species distribution maps from occurrences and regional atlases for 5464 cold-adapted plant species from 756 genera ... : Paleoclimate ReconstructionsCenozoic estimated air surface temperature (EAST) in the Northern Hemisphere at one degree resolution with coordinate reference system (CRS) "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs +towgs84=0,0,0". The file ‘EAST_60to0Ma_Hagen_etal_2019.csv’ contains the x and y coordinates followed by the EAST at the given coordinate and time, starting at 60 Ma and ending at 0 Ma (i.e. present) as indicated by the column names. The file ‘read_paleoclimate.R’ contains code on how to load and convert ‘EAST_60to0Ma_Hagen_etal_2019.csv’ into a raster with the correct coordinate reference system and an example on plotting the Northern Hemisphere estimated air surface temperature at 60Ma.Richness PatternsData of species and genus richness for the Northern Hemisphere for the present, masked for cold regions criteria and aggregated at two degree resolution with CRS “+proj=longlat +datum=WGS84 +no_defs +ellps=WGS84 +towgs84=0,0,0” The raster ‘cold-adapted_species.tif’ and ...