Geology Faculty Publications
A Re-Examination of the Contributions of Biofacies and Geographic Range to Extinction Risk in Ordovician Graptolites
Document Type
Article
Publication Date
2014
Publication Source
GFF: The Journal of the Geological Society of Sweden
Abstract
A set of 137 Ordovician graptolite species were used to examine the associations among geographic range, sampling, biofacies and species longevity. Model-choice using general linear models combined with partial least-squares regression analysis found seven distinct predictive variables.
The dominant factors were overall commonness, biofacies, geographic range and sampling in decreasing order of variance explained. However, the data-set is biased toward particularly well-sampled and widespread taxa.
Region (represented as a set of discrete geographic areas) was a strong factor in extinction risk, whereas latitudinal range and endemicity were poor predictors. Results suggest that other factors besides just geographic range and biofacies need to be considered when understanding extinction dynamics.
Inclusive pages
38-41
ISBN/ISSN
1103-5897
Copyright
Copyright © 2014, Taylor and Francis
Publisher
Taylor and Francis
Volume
136
Issue
1
Peer Reviewed
yes
eCommons Citation
Boyle, James T.; Sheets, H. David; Wu, Shuang-Ye; Goldman, Daniel; Melchin, Michael J.; Cooper, Roger A.; Sadler, Peter M.; and Mitchell, Charles E., "A Re-Examination of the Contributions of Biofacies and Geographic Range to Extinction Risk in Ordovician Graptolites" (2014). Geology Faculty Publications. 47.
https://ecommons.udayton.edu/geo_fac_pub/47
COinS
Comments
Permission documentation is on file.