Increase in abundance and decrease in richness of soil microbes following Hurricane Otto in three primary forest types in the Northern Zone of Costa Rica
| Autor: | Mehrdad Hajibabaei, Kiley Alderfer, Angie Ramirez Jimenez, Katie M. McGee, W. D. Eaton |
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| Rok vydání: | 2020 |
| Předmět: |
Costa Rica
0106 biological sciences 0301 basic medicine Forest Ecology Ecological Metrics Science Forests Biology Functional Groups 010603 evolutionary biology 01 natural sciences Ecosystems 03 medical and health sciences Forest ecology Ecosystem Biomass Soil Microbiology Riparian zone Decomposition geography Biomass (ecology) Multidisciplinary geography.geographical_feature_category Ecology Bacteria Organic Compounds Cyclonic Storms Ecology and Environmental Sciences Organic Chemistry Organisms Fungi Chemical Reactions Chemical Compounds Biology and Life Sciences Eukaryota Old-growth forest Terrestrial Environments Habitats Chemistry 030104 developmental biology Physical Sciences Soil water Medicine Species richness Soil microbiology Research Article |
| Zdroj: | PLoS ONE, Vol 15, Iss 7, p e0231187 (2020) PLoS ONE |
| ISSN: | 1932-6203 |
| DOI: | 10.1371/journal.pone.0231187 |
| Popis: | Little is known of how hurricane-induced deposition of canopy material onto tropical forest floors influences the soil microbial communities involved in decomposition of these materials. In this study, to identify how soil bacterial and fungal communities might change after a hurricane, and their possible roles in the C and N cycles, soils were collected from five 2000 m2 permanent plots in Lowland, Upland and Riparian primary forests in Costa Rica 3 months before and 7 months after Hurricane Otto damaged the forests. The soil Water, inorganic N and Biomass C increased and total organic C decreased Post-Hurricane, all of which best predicted the changes in the Post-Hurricane soil microbial communities. Post-Hurricane soils from all forest types showed significant changes in community composition of total bacteria, total fungi, and five functional groups of microbes (i.e., degrading/lignin degrading, NH4+-producing, and ammonium oxidizing bacteria, and the complex C degrading/wood rot/lignin degrading and ectomycorrhizal fungi), along with a decrease in richness in genera of all groups. As well, the mean proportion of DNA sequences (MPS) of all five functional groups increased. There were also significant changes in the MPS values of 7 different fungal and 7 different bacterial genera that were part of these functional groups. This is the first evidence that hurricane-induced deposition of canopy material is stimulating changes in the soil microbial communities after the hurricane, involving changes in specific taxonomic and functional group genera, and reduction in the community richness while selecting for dominant genera possibly better suited to process the canopy material. These changes may represent examples of taxonomic switching of functionally redundant microbial genera in response to dramatic changes in resource input. It is possible that differences in these microbial communities and genera may serve as indicators of disturbed and recovering regional soil ecosystems, and should be evaluated in the future. |
| Databáze: | OpenAIRE |
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