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Level: dissertation  Language: English

You searched for subject:(FLOODED LAND FLOODPLAINS ECOLOGY ). One record found.

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Loma Linda University

1. Britton, Douglas R. The Occurrence of Fish Remains in Modern Lake Systems : A Test of the Stratified-Lake Mode.

Degree: MS, Geology, 1988, Loma Linda University

Theories regarding the taphonomy of fishes in lacustrine environments have traditionally relied on an anoxic water column to explain the excellent preservation. This concept has never been directly tested in modern lacustrine environments that are thought to be analogous to the lacustrine environments predicted by the Stratified-lake Model. This research tested that model by searching for fish remains in 38 collected bottom samples of six modern lacustrine analogues, including Fayetteville Green Lake, New York. The bottom sediments of a warm, holomictic, shallow, and saline lake (Salton Sea, California) were also examined. Although laminated sediments were found in all of the lakes studied, only the Salton Sea sediments contained fish remains. This was surprising in that one would have expected the opposite: abundant fish remains in the stratified lakes and few, if any in the non-stratified, saline lake. In addition to the above described study, a preliminary study of the taphonomic processes effecting fish carcasses was carried out at Lake Perris, CA. Fresh fish carcasses were lowered in buckets to the bottom of the lake in both the epilimnion (water temperature >15 deg. c. and oxygenated) as well as the hypolimnion (water temperatureanoxic), directly testing the effects of oxygen content, temperature, and pressure on the preservation of fishes. In the warm, oxygenated water decomposition took place, producing enough gasses in the fish bodies to cause them to float to the surface. In the cool, anoxic environment, decomposition of the fleshy parts was initiated, but not enough gasses were produced to cause the fish to float to the surface. Further study is needed to better understand the separate effects of oxygen content, temperature, and pressure on the taphonomy of fishes. The results of this research strongly suggest that anoxia alone is not adequate to preserve fish remains and that some other physical, chemical, and/or biological condition may be necessary for the preservation of fishes. The results obtained at Salton Sea suggests that saline, alkaline lake waters may be important in the taphonomic process. Further studies in these environments should be productive. Advisors/Committee Members: H. Paul Buchheim, Leonard Brand, Lanny H. Fisk, Earl Lathrop.

Subjects/Keywords: Aquaculture and Fisheries; Biology; Paleobiology; Stratigraphy; Paleoecology; Lake Ecology; Loma Linda University. Geological Sciences program  – Dissertations

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Britton, D. R. (1988). The Occurrence of Fish Remains in Modern Lake Systems : A Test of the Stratified-Lake Mode. (Thesis). Loma Linda University. Retrieved from https://scholarsrepository.llu.edu/etd/553

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Britton, Douglas R. “The Occurrence of Fish Remains in Modern Lake Systems : A Test of the Stratified-Lake Mode.” 1988. Thesis, Loma Linda University. Accessed January 24, 2020. https://scholarsrepository.llu.edu/etd/553.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Britton, Douglas R. “The Occurrence of Fish Remains in Modern Lake Systems : A Test of the Stratified-Lake Mode.” 1988. Web. 24 Jan 2020.

Vancouver:

Britton DR. The Occurrence of Fish Remains in Modern Lake Systems : A Test of the Stratified-Lake Mode. [Internet] [Thesis]. Loma Linda University; 1988. [cited 2020 Jan 24]. Available from: https://scholarsrepository.llu.edu/etd/553.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Britton DR. The Occurrence of Fish Remains in Modern Lake Systems : A Test of the Stratified-Lake Mode. [Thesis]. Loma Linda University; 1988. Available from: https://scholarsrepository.llu.edu/etd/553

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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