Methanotrophic Activity, Abundance, and Diversity in Forested Swamp Pools: Spatiotemporal Dynamics and Influences on Methane Fluxes
| Autor: | Daniel N. Miller, William C. Ghiorse, Joseph B. Yavitt, Eugene L. Madsen |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
geography
geography.geographical_feature_category Ecology Sediment Biology Microbiology Swamp Methane chemistry.chemical_compound Water column chemistry Most probable number Abundance (ecology) Dissolved organic carbon Anaerobic oxidation of methane Earth and Planetary Sciences (miscellaneous) Environmental Chemistry General Environmental Science |
| Zdroj: | Geomicrobiology Journal. 21:257-271 |
| ISSN: | 1521-0529 0149-0451 |
| Popis: | Methane oxidation (methanotrophy) in the water column and sediments of forested swamp pools likely control seasonal and annual emission of CH4 from these systems, but the methanotrophic microbial communities, their activities, locations, and overall impact, is poorly understood. Several techniques including 14CH4 oxidation assays, culture-based most probable number (MPN) estimates of methane-oxidizing bacteria (MOB) and protozoan abundance, MOB strain isolation and characterization, and PCR techniques were used to investigate methanotrophy at a forested swamp near Ithaca, New York. The greatest methanotrophic activity and largest numbers of MOB occurred predominantly at the low oxygen sediment/water interface in the water column. Seasonally, methanotrophic activity was very dynamic, ranging from 0.1 to 61.9 μ moles CH4 d−1 g−1 dry sediment, and correlated most strongly with dissolved inorganic carbon (r = 0.896). Incorporation of methanotrophic variables (abundance and activity) into existing CH4 flux reg... |
| Databáze: | OpenAIRE |
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