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Potential Rates Of Methanogenesis In Peat And Marl Sawgrass Wetlands In The Florida Everglades, Dave S. Bachoon
Potential Rates Of Methanogenesis In Peat And Marl Sawgrass Wetlands In The Florida Everglades, Dave S. Bachoon
FIU Electronic Theses and Dissertations
Methanogenesis was studied in soils from two sawgrass wetlands of the Florida Everglades. Marl soils exhibited a significantly higher potential rate of methanogenesis than peat soils. In these wetlands, methanogenesis: (1) decreased rapidly with increasing soil depth, (2) increased at higher temperatures and lower Eh, (3) was stimulated by organic compounds (cellulose, glucose and acetate), and (4) remained unaffected by added ammonium. Lowering the Eh in the peat and marl soils with sulfide or sulfate stimulated methanogenesis. In January 1990, phosphate caused a significant increase in methanogenesis. The potential rates of methanogenesis decreased to undetectable levels when water levels dropped …
Seasonal Activity And Road Mortality Of The Snakes Of The Pa-Hay-Okee Wetlands Of Everglades National Park, Frank S. Bernardino
Seasonal Activity And Road Mortality Of The Snakes Of The Pa-Hay-Okee Wetlands Of Everglades National Park, Frank S. Bernardino
FIU Electronic Theses and Dissertations
The current study describes the composition and activity of the snake community of the Pa-hay-okee wetlands of Everglades National Park. The study was conducted from January 1987 to January 1989. Sixteen species were observed, with Thamnophis sauritus, Thamnophis sirtalis, Nerodia fasciata pictiventris, and Agkistrodon piscivorus representing 90.2% of the total sample. The seasonal distribution and activity of the snakes were closely related to fluctuations in the water table. Most activity occurred in the winter months as snakes migrated west following the drying water edge of Shark River Slough. Seventy percent of all snakes observed during this study …