- Collection:
- Atlanta University and Clark Atlanta University Theses and Dissertations
- Title:
- An investigation of the methane flux in a southeastern wetland (the Okefenokee Swamp), 1991
- Creator:
- Cunningham, Mark A.
- Date of Original:
- 1991-07-01
- Subject:
- Degrees, Academic
Dissertations, Academic - Location:
- United States, Georgia, Fulton County, Atlanta, 33.749, -84.38798
- Medium:
- theses
- Type:
- Text
- Format:
- application/pdf
- Description:
- Recent findings indicate that the methane concentration is increasing at a rate of 1 to 2% per year. Biogenic sources is one potential contributor to this increased methane concentration. Wetlands and swamps have been suggested as primary biogenic candidates; however, this suggestion is usually based on a few sporadic measurements of methane emissions. This thesis describes an experimental project designed to determine the flux of methane from the Okefenokee Swamp on a continuous spatial and temporal basis. In this research project, diurnal and seasonal fluxes of methane from the Okefenokee swamp were examined in a single marsh, from the same vegetation zone. Continuous measurements were made over a period of nine months. Maximum rates occurred during spring and summer months. Spatial and temporal variations of flux measurements were high; rates ranged from 0 mg m"2 hr'1 to 2394 mg m"2 hr'1. The mean concentrations were highest in fall and spring months at 25 ppm and 45 ppm, respectively. Winter months displayed considerably lower concentrations, with a mean concentration of 2 ppm.
- External Identifiers:
- Metadata URL:
- http://hdl.handle.net/20.500.12322/cau.td:1991_cunningham_mark_a
- Rights Holder:
- Clark Atlanta University
- Holding Institution:
- Atlanta University Center Robert W. Woodruff Library
- Rights:
-
