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The Impact of the Richmondian Invasion on Paleobiogeographic Distribution of Taxa in the Late Ordovician C4 Sequence (Richmondian Stage, Cincinnati, Ohio) Including a Comparison of Range Reconstruction Methods

Dudei, Nicole L.

Abstract Details

2009, Master of Science (MS), Ohio University, Geological Sciences (Arts and Sciences).
The C4 sequence of the Richmondian Stage records a large biotic invasion, providing a unique study interval for paleobiogeographic studies. Two separate but related analyses quantify the geographic ranges of taxa using ecological niche modeling (ENM) and spline methods. The ENM approach calculates species' niches using a suite of species occurrence and sedimentary data. Results indicate that generalist species are less affected by the introduction of invaders and lowering relative sea level while ecological specialists are displaced. The ENM method requires a large sedimentary data set and is not suitable for all study areas. The spline geographic range estimation method is less data-intensive for reconstructing ranges from faunal abundance data. This method is best for evenly distributed abundance data in regions with poor sedimentary data coverage. GIS is a powerful tool for paleontological analyses and provides a means to quantify species range fluctuations in a spatial and temporal framework.
Alycia L. Stigall, PhD (Advisor)
Douglas Green, PhD (Committee Member)
Dina Lopez, PhD (Committee Member)
227 p.

Recommended Citations

Citations

  • Dudei, N. L. (2009). The Impact of the Richmondian Invasion on Paleobiogeographic Distribution of Taxa in the Late Ordovician C4 Sequence (Richmondian Stage, Cincinnati, Ohio) Including a Comparison of Range Reconstruction Methods [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1245437297

    APA Style (7th edition)

  • Dudei, Nicole. The Impact of the Richmondian Invasion on Paleobiogeographic Distribution of Taxa in the Late Ordovician C4 Sequence (Richmondian Stage, Cincinnati, Ohio) Including a Comparison of Range Reconstruction Methods. 2009. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1245437297.

    MLA Style (8th edition)

  • Dudei, Nicole. "The Impact of the Richmondian Invasion on Paleobiogeographic Distribution of Taxa in the Late Ordovician C4 Sequence (Richmondian Stage, Cincinnati, Ohio) Including a Comparison of Range Reconstruction Methods." Master's thesis, Ohio University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1245437297

    Chicago Manual of Style (17th edition)