Doctoral Dissertations

Keywords and Phrases

Freshwater; Holocene; Missouri Ozarks; Paleoclimate; Paleolimnology; Palynology


"Five small lakes in southeast Missouri (Frisco, Pine Forest, and Bray Area lakes [Phelps County], and Cypress and Blue ponds [Bollinger County]) were cored for paleolimnological studies. Cores were evaluated for their sedimentology, palynology, and geochemistry. In two of these lakes (Bray Area and Pine Forest lakes) the planktonic algae were also studied in the water column, along with ecological parameters. Algae in the sediments were compared to algae in the water to understand the resistance of different species to decay, and a suggested methodology for this work is described. Reconstructions of the past environments around each lake were created using data derived from the cores, and pollen-based climate reconstructions (January and July mean temperature and annual precipitation) were created for each lake. Instrumental records were compared to climate reconstructions to provide an estimate of the latter. A new study site in an area where limited climate data currently exists was also added to the literature. Error results from the climate reconstructions indicate that the best reconstructions were achieved for July temperature, while January temperature and annual precipitation were less accurate; excluding Asteraceae from pollen-based climate reconstructions improved accuracy by up to 20%. The cores studied from Cypress Pond provided a pollen record for most of the Holocene which was used to create a climate reconstruction for the site. Additionally, age model results indicate that Blue Pond may have formed during the New Madrid seismic events of 1811/1812"--Abstract, page iv.


Oboh-Ikuenobe, Francisca

Committee Member(s)

Seeger, Cheryl M.
Niyogi, Dev
Wronkiewicz, David J.
Yang, Wan


Geosciences and Geological and Petroleum Engineering

Degree Name

Ph. D. in Geology and Geophysics


National Science Foundation (U.S.)
University of Missouri Research Board
Paleontological Society
Alfred Spreng Research Award


Funding was provided by the National Science Foundation (grant number EAR-0719838 to Oboh-Ikuenobe), a University of Missouri Research Board Grant to Oboh-Ikuenobe, a Paleontological Society Student Grant to Haselwander, the Alfred Spreng Research Award, and the Opportunity for Undergraduate Research Experience at Missouri University of Science and Technology.


Missouri University of Science and Technology

Publication Date

Fall 2016

Journal article titles appearing in thesis/dissertation

  • Preliminary observations on the preservation of organic-walled algae in shallow, freshwater lakes from south-central Missouri, USA
  • Modern analogue technique (MAT) climate reconstructions and anthropogenic effects in three south-central Missouri lakes, USA
  • Preliminary results of lake sediments from Blue and Cypress ponds, SE Missouri Ozarks, USA


xi, 151 pages

Note about bibliography

Includes bibliographic references.

Geographic Coverage


Time Period



© 2016 Robert Dayton Haselwander, All rights reserved.

Document Type

Dissertation - Open Access

File Type




Subject Headings

Palynology -- Missouri
Lake sediments -- Missouri
Geology, Stratigraphic -- Holocene
Paleolimnology -- Holocene

Thesis Number

T 11029

Electronic OCLC #



Dissertation Location