10.5061/DRYAD.1G1JWSTV0
Penny, Amelia
0000-0002-4392-8090
University of Helsinki
Hints, Olle
Tallinn University of Technology
Kröger, Björn
University of Helsinki
Data from: Carbonate shelf development and early Paleozoic benthic
diversity in Baltica: A hierarchical diversity partitioning approach using
brachiopod data
Dryad
dataset
2020
FOS: Earth and related environmental sciences
Academy of Finland
https://ror.org/05k73zm37
2020-12-12T00:00:00Z
2020-12-12T00:00:00Z
en
https://doi.org/10.1017/pab.2021.3
https://doi.org/10.5281/zenodo.4783097
50701307 bytes
7
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The Ordovician–Silurian (~485–419 Ma) was a time of considerable
evolutionary upheaval, encompassing both the largest evolutionary
diversification and one of the first major mass extinctions. The
Ordovician diversification coincided with global climatic cooling and
paleocontinental collision, the ecological impacts of which were mediated
by region-specific processes including substrate changes, biotic
invasions, and tectonic movements. From the Sandbian–Katian (~453 Ma)
onward, an extensive carbonate shelf developed in the eastern Baltic
paleobasin in response to a tectonic shift to tropical latitudes and an
increase in the abundance of calcareous macroorganisms. We quantify the
contributions of environmental differentiation and temporal turnover to
regional diversity through the Ordovician and Silurian, using brachiopod
occurrences from the more shallow-water facies belts of the eastern Baltic
paleobasin, an epicontinental sea on the Baltica paleocontinent. The
results are consistent with carbonate shelf development as a driver of
Ordovician regional diversification, both by enhancing broadscale
differentiation between shallow- and deep-marine environments and by
generating heterogeneous carbonate environments that allowed increasing
numbers of brachiopod genera to coexist. However, temporal turnover also
contributed significantly to apparent regional diversity, particularly in
the Middle–Late Ordovician.
This upload contains the R scripts and data needed to replicate the
analyses and data preparation in the manuscript. The data were originally
downloaded from the Paleobiology Database (PBDB, https://paleobiodb.org)
and the database of the Geoscience Collections of Estonia (SARV,
https://geocollections.info).
To use this code and data, open the file
baltic_calculations_neat_revised_26_02_21_neat.R, which explains what the
different R scripts do and does most of the calculations and figure
plotting in this manuscript. functions_baltic_cleaning.R,
01_BS_lithologies.R, 02_BS_geokud.R, 03_BS_PBDB.R are for data downloads
and cleaning 04_BS_diversity.R does capture-recapture diversity estimation
05_figs.R produces some of the figures. make_supp_tables.R converts some
of the results tables into tables in the Supplementary Material. Results
from the analyses are also included in this upload.