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.
Seeger, Cheryl M.
Wronkiewicz, David J.
Geosciences and Geological and Petroleum Engineering
Ph. D. in Geology and Geophysics
National Science Foundation (U.S.)
University of Missouri Research Board
Alfred Spreng Research Award
Missouri University of Science and Technology
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
© Robert Dayton Haselwander
Dissertation - Open Access
Library of Congress Subject Headings
Palynology -- Missouri
Lake sediments -- Missouri
Geology, Stratigraphic -- Holocene
Paleolimnology -- Holocene
Electronic OCLC #
Haselwander, Robert D., "Palynological studies of holocene lake sediments in the Missouri Ozarks" (2016). Doctoral Dissertations. 2538.