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Evaluating the influence of wetland vegetation on chemical residence time in Mississippi Delta drainage ditches

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Title: Evaluating the influence of wetland vegetation on chemical residence time in Mississippi Delta drainage ditches
Authors: Kröger, R.1 rkroger@cfr.msstate.edu, Moore, M.T.2, Locke, M.A.2, Cullum, R.F.2, Steinriede, R.W.2, Testa, S.2, Bryant, C.T.2, Cooper, C.M.2
Source: Agricultural Water Management. Jul2009, Vol. 96 Issue 7, p1175-1179. 5p.
Subject Terms: *Wetland plants, *Plant water requirements, *Vegetation management, *Aquatic ecology, *Water pollution monitoring, *Water pollution
Geographic Terms: Delta (Miss. : Region), Mississippi
Abstract: Abstract: The presence of emergent vegetation within channelized aquatic environments has the capacity to provide a number of biological functions as well as alter the hydrology of the system. Vegetation within the channel exerts roughness, drag and friction on flowing water, reducing flow rates, increasing water depths and increasing hydraulic retention time. By increasing the hydraulic retention time, chemical residence time (CRT) is increased, thus improving the potential of pollutant mitigation. The study compared two geomorphologically similar drainage ditches, one vegetated and one non-vegetated to evaluate the effect obligate, in-stream wetland vegetation had on CRT. A fluoride (F−) tracer was amended to both ditches with nutrients and sediments to simulate stormwater runoff event. The measured CRT of the vegetated drainage ditch was at least twice that of the non-vegetated ditch. These results suggest that with the presence of vegetation increasing CRT, chemical removal rates will improve, and as a result increase the possibility of microbial transformation, adsorption, and macrophyte assimilation. By dredging or clear-scraping ditches and removing the vegetative component, farmers and managers alike will increase water flows, decrease CRT and potentially increase pollutant loads into aquatic receiving systems. [Copyright &y& Elsevier]
Copyright of Agricultural Water Management is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: GreenFILE
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Header DbId: 8gh
DbLabel: GreenFILE
An: 38320625
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Evaluating the influence of wetland vegetation on chemical residence time in Mississippi Delta drainage ditches
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  Data: <searchLink fieldCode="AR" term="%22Kröger%2C+R%2E%22">Kröger, R.</searchLink><relatesTo>1</relatesTo><i> rkroger@cfr.msstate.edu</i><br /><searchLink fieldCode="AR" term="%22Moore%2C+M%2ET%2E%22">Moore, M.T.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Locke%2C+M%2EA%2E%22">Locke, M.A.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Cullum%2C+R%2EF%2E%22">Cullum, R.F.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Steinriede%2C+R%2EW%2E%22">Steinriede, R.W.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Testa%2C+S%2E%22">Testa, S.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Bryant%2C+C%2ET%2E%22">Bryant, C.T.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Cooper%2C+C%2EM%2E%22">Cooper, C.M.</searchLink><relatesTo>2</relatesTo>
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  Data: Agricultural Water Management. Jul2009, Vol. 96 Issue 7, p1175-1179. 5p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Wetland+plants%22">Wetland plants</searchLink><br />*<searchLink fieldCode="DE" term="%22Plant+water+requirements%22">Plant water requirements</searchLink><br />*<searchLink fieldCode="DE" term="%22Vegetation+management%22">Vegetation management</searchLink><br />*<searchLink fieldCode="DE" term="%22Aquatic+ecology%22">Aquatic ecology</searchLink><br />*<searchLink fieldCode="DE" term="%22Water+pollution+monitoring%22">Water pollution monitoring</searchLink><br />*<searchLink fieldCode="DE" term="%22Water+pollution%22">Water pollution</searchLink>
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  Label: Geographic Terms
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  Data: <searchLink fieldCode="DE" term="%22Delta+%28Miss%2E+%3A+Region%29%22">Delta (Miss. : Region)</searchLink><br /><searchLink fieldCode="DE" term="%22Mississippi%22">Mississippi</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: The presence of emergent vegetation within channelized aquatic environments has the capacity to provide a number of biological functions as well as alter the hydrology of the system. Vegetation within the channel exerts roughness, drag and friction on flowing water, reducing flow rates, increasing water depths and increasing hydraulic retention time. By increasing the hydraulic retention time, chemical residence time (CRT) is increased, thus improving the potential of pollutant mitigation. The study compared two geomorphologically similar drainage ditches, one vegetated and one non-vegetated to evaluate the effect obligate, in-stream wetland vegetation had on CRT. A fluoride (F−) tracer was amended to both ditches with nutrients and sediments to simulate stormwater runoff event. The measured CRT of the vegetated drainage ditch was at least twice that of the non-vegetated ditch. These results suggest that with the presence of vegetation increasing CRT, chemical removal rates will improve, and as a result increase the possibility of microbial transformation, adsorption, and macrophyte assimilation. By dredging or clear-scraping ditches and removing the vegetative component, farmers and managers alike will increase water flows, decrease CRT and potentially increase pollutant loads into aquatic receiving systems. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Agricultural Water Management is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.agwat.2009.03.002
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      – Code: eng
        Text: English
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        PageCount: 5
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      – SubjectFull: Wetland plants
        Type: general
      – SubjectFull: Plant water requirements
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      – SubjectFull: Vegetation management
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      – SubjectFull: Aquatic ecology
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      – SubjectFull: Water pollution monitoring
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      – SubjectFull: Water pollution
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      – SubjectFull: Delta (Miss. : Region)
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      – SubjectFull: Mississippi
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      – TitleFull: Evaluating the influence of wetland vegetation on chemical residence time in Mississippi Delta drainage ditches
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              Text: Jul2009
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              Y: 2009
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