Direct and Indirect Influence of Parental Bedrock on Streambed Microbial Community Structure in Forested Streams

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dc.contributor.authorMosher, Jennifer J.
dc.contributor.authorFindlay, Robert H.
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2023-09-28T19:11:32Z
dc.date.available2023-09-28T19:11:32Z
dc.date.issued2011
dc.description.abstractA correlative study was performed to determine if variation in streambed microbial community structure in low-order forested streams can be directly or indirectly linked to the chemical nature of the parental bedrock of the environments through which the streams flow. Total microbial and photosynthetic biomass (phospholipid phosphate [PLP] and chlorophyll a), community structure (phospholipid fatty acid analysis), and physical and chemical parameters were measured in six streams, three located in sandstone and three in limestone regions of the Bankhead National Forest in northern Alabama. Although stream water flowing through the two different bedrock types differed significantly in chemical composition, there were no significant differences in total microbial and photosynthetic biomass in the sediments. In contrast, sedimentary microbial community structure differed between the bedrock types and was significantly correlated with stream water ion concentrations. A pattern of seasonal variation in microbial community structure was also observed. Further statistical analysis indicated dissolved organic matter (DOM) quality, which was previously shown to be influenced by geological variation, correlated with variation in bacterial community structure. These results indicate that the geology of underlying bedrock influences benthic microbial communities directly via changes in water chemistry and also indirectly via stream water DOM quality.en_US
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.citationMosher, J. J., & Findlay, R. H. (2011). Direct and Indirect Influence of Parental Bedrock on Streambed Microbial Community Structure in Forested Streams. In Applied and Environmental Microbiology (Vol. 77, Issue 21, pp. 7681–7688). American Society for Microbiology. https://doi.org/10.1128/aem.06029-11
dc.identifier.doi10.1128/AEM.06029-11
dc.identifier.urihttps://ir.ua.edu/handle/123456789/11002
dc.languageEnglish
dc.language.isoen_US
dc.publisherAmerican Society of Microbiology
dc.subjectDISSOLVED ORGANIC-MATTER
dc.subjectHYPORHEIC-ZONE
dc.subjectBACTERIAL COMMUNITIES
dc.subjectSEASONAL-VARIATION
dc.subjectDYNAMICS
dc.subjectBIOGEOGRAPHY
dc.subjectDIVERSITY
dc.subjectSEDIMENTS
dc.subjectBIOMASS
dc.subjectASSEMBLAGES
dc.subjectBiotechnology & Applied Microbiology
dc.subjectMicrobiology
dc.titleDirect and Indirect Influence of Parental Bedrock on Streambed Microbial Community Structure in Forested Streamsen_US
dc.typeArticle
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