Publication Date

1-1-1988

Document Type

Dissertation/Thesis

First Advisor

Ling, Hsin-Yi, 1930-

Degree Name

B.S. (Bachelor of Science)

Department

Department of Geology and Environmental Sciences

Abstract

The silicoflagellate genera Dictyocha and Distephanus are often used to determine paleotemperatures because the ratio of warm water organisms to cold water organisms is an indicator of paleo-oceanographic temperatures. In addition to temperature, other factors, including competitive exclusion, succession, mutagenesis, genetic drift, and natural selection affect dominance relationships in natural ecosystems. Many of these factors may have been working on these silicoflagellate genera, which were obtained from sediment cores in the Antarctic.

Comments

Includes bibliographical references.

Extent

16 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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