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 Wind Erosion and Water Conservation Research: Lubbock, TX
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ARS Home Plains Area Lubbock, Texas Cropping Systems Research Laboratory Wind Erosion and Water Conservation Research Research Publications at this Location





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Title:   Author  item
                                            GARDNER, TERRENCE - Alabama A & M Universityitem
                                            Acosta-Martinez, Veronicaitem
                                            Zobeck, Teddyitem
                                            BADDOCK, MATTHEW - University Of Virginiaitem
                                            Van Pelt, Robert

                                                         - *Scott*item
                                            SENWO, ZACHARY - Alabama A & M Universityitem
                                            Calderon, Franciscoitem
                                            COX, STEPHEN - Research & Testing Laboratoryitem
                                            DOWD, SCOT - Research & Testing Laboratory
  Submitted to: Soil and Water Conservation Society
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 7/22/2012
                                    Publication  Date: 7/25/2012
                                    Citation: Gardner, T.G., Acosta Martinez, V., Zobeck, T.M., Baddock, M.C., Van Pelt, R.S., Senwo, Z., Calderon, F.J., Cox, S., Dowd, S. 2012. Pyrosequencing reveals bacteria carried in different wind eroded sediments[abstract]. Soil and Water Conservation Society. July 22-25, 2012. Ft. Worth, Texas.Interpretive Summary:
                                Technical Abstract: Little is known about the microbial communities carried in wind-eroded sediments from various soil types and land management systems. A novel technique, pyrosequencing, promises to expand our understanding of the vast microbial diversity of soils and eroded sediments as it can sequence between 10-100 times more DNA fragments than previous techniques providing enhanced exploration into what microbes are being lost from soil due to wind erosion. Our study evaluated the bacterial diversity of coarse sized fractions of wind-eroded sediment as well as dust collected from three different organic-rich soils in Michigan using a portable field wind tunnel. Our findings suggested:1 Bacteria carried in the coarser sediment and dust were effective fingerprints of the soil source, although their distribution (predominance) may vary depending on the soil characteristics as certain bacteria may possibly be more protected in soil surfaces than others;2 Coarser wind-eroded sediment showed higher bacterial diversity than fine dust and;3 Certain bacteria were more predominant in fine dust (Bacteroidetes, Cloroflexi and Firmicutes)than coarse sediment (Proteobacteria and Acidobacteria, revealing different locations and niches of bacteria in soil, which depending on wind erosion processes, can have important implications on the soil sustainability and functioning. Infrared spectroscopy showed that wind erosion preferentially removes particular kinds of C from the soil that are lost via fine dusts. Our study provides evidence that eroded sediments remove the active labile organic soil particulates containing key microorganisms involved in soil biogeochemical processes, which can have a negative impact on the quality/function of the parent soil.


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