The effects of short-term inundation on carbon dynamics, microbial community structure and microbial activity in floodplain soil
| Autor: | Darren S. Baldwin, Gavin N. Rees, Benjamin Wilson, Jessica S. Wilson |
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| Rok vydání: | 2011 |
| Předmět: |
geography
geography.geographical_feature_category Floodplain Ecology media_common.quotation_subject fungi Flooding (psychology) food and beverages Soil carbon humanities Mesocosm Soil respiration Speciation Microbial population biology parasitic diseases Soil water Environmental Chemistry Environmental science General Environmental Science Water Science and Technology media_common |
| Zdroj: | River Research and Applications. 27:213-225 |
| ISSN: | 1535-1459 |
| Popis: | A mesocosm study was carried out to determine whether flooding affected soil microbial structure and function. Over a 24 day period soils were either flooded or remained dry and changes in the microbial community structure, microbial metabolic activity (determined by looking at soil respiration rates and exo-enzyme activity), community level physiological profiles and soil carbon speciation were examined. Flooding induced significant changes in the microbial community structure and increased soil respiration and enzymatic degradation rates. Shifts occurred in carbon speciation after flooding and increases in ‘labile’ carbon fractions were observed. The duration of flooding was also important for carbon dynamics and microbial community structure. Based on the results of the mesocosm experiment a conceptual model of floodplain soils response to flooding over time was formulated. The findings of this mesocosm study illustrate the importance of flooding to floodplain soil functioning. Copyright © 2010 John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
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