Journal article
Flooding effects on soil microbial communities
Applied soil ecology : a section of Agriculture, ecosystems & environment, Vol.42(1), pp.1-8
2009
Handle:
https://hdl.handle.net/2376/115410
Abstract
Flooding affects both above- and below-ground ecosystem processes. While the below-ground changes may be less obvious, they are as important as the above-ground changes. Soil microorganisms are sensitive to disturbance, and shifts in soil microbial community structure are expected when anaerobic conditions develop from flooding. The primary objective of these studies was to determine the effect of flooding on soil microbial communities. Simulated floods were established under greenhouse and field conditions. Flood treatments of flowing, intermittent (greenhouse only) or stagnant conditions were compared to a control with no flooding. In addition, residue treatments (incorporation of grass, legume or tree residue) were evaluated under greenhouse conditions. Soil samples from these experiments were examined using phospholipid fatty acid (PLFA) analysis and total N (TN), total organic carbon (TOC) and C:N ratio. Stagnant flood conditions in the greenhouse decreased microbial biomass and markers for aerobic bacteria, Gram-negative bacteria, Gram-positive bacteria, and mycorrhizal fungi. However, residue treatment, in general, did not affect microbial community structure. Effects of flood treatments in the field varied with depth and flood
×
depth interaction. The B:F ratio and microbial biomass decreased with stagnant flooding while other measures were not affected by flooding. Microbial biomass and microbial markers decreased with depth. We found some changes in the soil microbial community due to flooding; however, the 5-week time period of our study may not have been long enough to develop measureable changes. Further changes in the microbial community may occur as flood waters remain in a given area.
Metrics
13 Record Views
Details
- Title
- Flooding effects on soil microbial communities
- Creators
- Irene M Unger - Department of Forestry, 203 Anheuser-Busch Natural Resources Building, University of Missouri, Columbia, MO 65211, United StatesAnn C Kennedy - USDA-ARS, 217 Johnson Hall, Washington State University, Pullman, WA 99164-6421, United StatesRose-Marie Muzika - Department of Forestry, 203 Anheuser-Busch Natural Resources Building, University of Missouri, Columbia, MO 65211, United States
- Publication Details
- Applied soil ecology : a section of Agriculture, ecosystems & environment, Vol.42(1), pp.1-8
- Publisher
- Elsevier B.V
- Identifiers
- 99900547740401842
- Language
- English
- Resource Type
- Journal article