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Quantitative Paleobiogeography of Maysvillian (Late Ordovician) Brachiopod Species of the Cincinnati Arch: a Test of Niche Modeling Methods for Paleobiogeographic Reconstruction

Walls, Bradley J.
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1243010764

Abstract Details

2009, Master of Science (MS), Ohio University, Geological Sciences (Arts and Sciences).
The biogeography of eight Late Ordovician articulate brachiopod species were studied from the C3 sequence of the Cincinnati Arch in two separate but related analyses, ecological niche modeling (ENM) and field validation of the original niche models. During Late Ordovician, sediments eroded from the Taconic Mountains accumulated in the Cincinnati region causing a relative sea level fall. Results indicate many species responded by altering their ecological niche, while others maintained their niche and tracked shifting habitat. Conversely, ecological generalists species show little biogeographic change in response to relative sea level fluctuations. Field validation of the niche models produced in the first analysis indicated a high degree of accuracy and statistical significance and establishes ENM as a useful tool for paleobiogeographic reconstruction. Specifically, ENM allows biogeographical patterns in the fossil record to be understood in the context of environmental change.
Alycia L. Stigall, PhD (Advisor)
Greg Nadon, PhD (Committee Member)
Greg Springer, PhD (Committee Member)
205 p.
Geology; Paleontology
GARP; biogeography; brachiopods; ordovician; niche modeling; ground truthing

Recommended Citations

Citations

  • Walls, B. J. (2009). Quantitative Paleobiogeography of Maysvillian (Late Ordovician) Brachiopod Species of the Cincinnati Arch: a Test of Niche Modeling Methods for Paleobiogeographic Reconstruction [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1243010764

    APA Style (7th edition)

  • Walls, Bradley. Quantitative Paleobiogeography of Maysvillian (Late Ordovician) Brachiopod Species of the Cincinnati Arch: a Test of Niche Modeling Methods for Paleobiogeographic Reconstruction. 2009. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1243010764.

    MLA Style (8th edition)

  • Walls, Bradley. "Quantitative Paleobiogeography of Maysvillian (Late Ordovician) Brachiopod Species of the Cincinnati Arch: a Test of Niche Modeling Methods for Paleobiogeographic Reconstruction." Master's thesis, Ohio University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1243010764

    Chicago Manual of Style (17th edition)

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© 2009, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.