View in EDS

Capacity for bioreactors and riparian rehabilitation to enhance nitrate attenuation in agricultural streams.

Saved in:
Bibliographic Details
Title: Capacity for bioreactors and riparian rehabilitation to enhance nitrate attenuation in agricultural streams.
Authors: Goeller, Brandon C.1 (AUTHOR) Brandon.Goeller@niwa.co.nz, Burbery, Lee F.1 (AUTHOR), Febria, Catherine M.1 (AUTHOR), Collins, Kathryn E.1 (AUTHOR), Burrows, Nikki J.1 (AUTHOR), Simon, Kevin S.1 (AUTHOR), Harding, Jon S.1 (AUTHOR), McIntosh, Angus R.1 (AUTHOR)
Source: Ecological Engineering. Sep2019, Vol. 134, p65-77. 13p.
Subjects: Riparian restoration, Riparian areas, Groundwater pollution, Nitrates, Water quality, Buffer zones (Ecosystem management)
Abstract: • Combing edge-of-field N-removal tools attenuated nitrate across riparian buffers. • Hydrologic variability drove nitrate fluxes and the performance of attenuation tools. • Farm-scale N-loss reductions were small compared to groundwater N legacies. Globally, small agricultural waterways fed by springs, tile drains, and seeps can disproportionately contribute to downstream nutrient loading, which is associated with declines in water quality and ecosystem functions. Treating nitrate using a multiple tool, multiple-scale approach in small waterways could offer improved management of these sources. We used a before-after-control-impact design to test the suitability of three small (<30 m3) edge-of-field denitrifying woodchip bioreactors and stream bank re-shaping and riparian planting. Over three-and-a-half-years, riparian rehabilitation enhanced nitrate flux attenuation compared to pre-rehabilitation, but only under relatively low flow conditions. In comparison, there were no significant changes in nitrate flux in a control waterway under any flow condition. N fluxes always increased in both the control and treatment waterways when reaches gained water downstream. Nitrate removal efficiencies for all three bioreactors ranged from <10 to >99%, with performance variations due to short residence times and fluctuations in source water chemistry. A single tile drain bioreactor removed 0.41 kg NO 3 -N d−1, equivalent to ∼10% of the mean daily tile drain nitrate load. Greenhouse gas fluxes from the tile drain bioreactor were similar to the surrounding pasture (CO 2 -C mean: 185–286 mg C m2 h−1; N 2 O-N mean: 49–90 μg N m2 h−1), suggesting no negative impacts from the bioreactor. Overall, our results suggest a multiple-tool, multiple-scale application of rehabilitation tools can reduce downstream N fluxes, but only under certain flow conditions. Thus, local rehabilitation tools, like those trialed here, will need to be scaled appropriately if they are to significantly attenuate nutrient losses from small agricultural waterways. Moreover, these will not replace catchment-scale nutrient plans to address losses from land and legacy groundwater N pollution. [ABSTRACT FROM AUTHOR]
Copyright of Ecological Engineering 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: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 137093301
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Capacity for bioreactors and riparian rehabilitation to enhance nitrate attenuation in agricultural streams.
– Name: Author
  Label: Authors
  Group: Au
  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Goeller%2C+Brandon+C%2E%22&quot;&gt;Goeller, Brandon C.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; Brandon.Goeller@niwa.co.nz&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Burbery%2C+Lee+F%2E%22&quot;&gt;Burbery, Lee F.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Febria%2C+Catherine+M%2E%22&quot;&gt;Febria, Catherine M.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Collins%2C+Kathryn+E%2E%22&quot;&gt;Collins, Kathryn E.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Burrows%2C+Nikki+J%2E%22&quot;&gt;Burrows, Nikki J.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Simon%2C+Kevin+S%2E%22&quot;&gt;Simon, Kevin S.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Harding%2C+Jon+S%2E%22&quot;&gt;Harding, Jon S.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22McIntosh%2C+Angus+R%2E%22&quot;&gt;McIntosh, Angus R.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Ecological+Engineering%22&quot;&gt;Ecological Engineering&lt;/searchLink&gt;. Sep2019, Vol. 134, p65-77. 13p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Riparian+restoration%22&quot;&gt;Riparian restoration&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Riparian+areas%22&quot;&gt;Riparian areas&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Groundwater+pollution%22&quot;&gt;Groundwater pollution&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Nitrates%22&quot;&gt;Nitrates&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Water+quality%22&quot;&gt;Water quality&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Buffer+zones+%28Ecosystem+management%29%22&quot;&gt;Buffer zones (Ecosystem management)&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • Combing edge-of-field N-removal tools attenuated nitrate across riparian buffers. • Hydrologic variability drove nitrate fluxes and the performance of attenuation tools. • Farm-scale N-loss reductions were small compared to groundwater N legacies. Globally, small agricultural waterways fed by springs, tile drains, and seeps can disproportionately contribute to downstream nutrient loading, which is associated with declines in water quality and ecosystem functions. Treating nitrate using a multiple tool, multiple-scale approach in small waterways could offer improved management of these sources. We used a before-after-control-impact design to test the suitability of three small (&lt;30 m3) edge-of-field denitrifying woodchip bioreactors and stream bank re-shaping and riparian planting. Over three-and-a-half-years, riparian rehabilitation enhanced nitrate flux attenuation compared to pre-rehabilitation, but only under relatively low flow conditions. In comparison, there were no significant changes in nitrate flux in a control waterway under any flow condition. N fluxes always increased in both the control and treatment waterways when reaches gained water downstream. Nitrate removal efficiencies for all three bioreactors ranged from &lt;10 to &gt;99%, with performance variations due to short residence times and fluctuations in source water chemistry. A single tile drain bioreactor removed 0.41 kg NO 3 -N d−1, equivalent to ∼10% of the mean daily tile drain nitrate load. Greenhouse gas fluxes from the tile drain bioreactor were similar to the surrounding pasture (CO 2 -C mean: 185–286 mg C m2 h−1; N 2 O-N mean: 49–90 μg N m2 h−1), suggesting no negative impacts from the bioreactor. Overall, our results suggest a multiple-tool, multiple-scale application of rehabilitation tools can reduce downstream N fluxes, but only under certain flow conditions. Thus, local rehabilitation tools, like those trialed here, will need to be scaled appropriately if they are to significantly attenuate nutrient losses from small agricultural waterways. Moreover, these will not replace catchment-scale nutrient plans to address losses from land and legacy groundwater N pollution. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: &lt;i&gt;Copyright of Ecological Engineering is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder&#39;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.&lt;/i&gt; (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=137093301
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.ecoleng.2019.03.014
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 65
    Subjects:
      – SubjectFull: Riparian restoration
        Type: general
      – SubjectFull: Riparian areas
        Type: general
      – SubjectFull: Groundwater pollution
        Type: general
      – SubjectFull: Nitrates
        Type: general
      – SubjectFull: Water quality
        Type: general
      – SubjectFull: Buffer zones (Ecosystem management)
        Type: general
    Titles:
      – TitleFull: Capacity for bioreactors and riparian rehabilitation to enhance nitrate attenuation in agricultural streams.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Goeller, Brandon C.
      – PersonEntity:
          Name:
            NameFull: Burbery, Lee F.
      – PersonEntity:
          Name:
            NameFull: Febria, Catherine M.
      – PersonEntity:
          Name:
            NameFull: Collins, Kathryn E.
      – PersonEntity:
          Name:
            NameFull: Burrows, Nikki J.
      – PersonEntity:
          Name:
            NameFull: Simon, Kevin S.
      – PersonEntity:
          Name:
            NameFull: Harding, Jon S.
      – PersonEntity:
          Name:
            NameFull: McIntosh, Angus R.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 09
              Text: Sep2019
              Type: published
              Y: 2019
          Identifiers:
            – Type: issn-print
              Value: 09258574
          Numbering:
            – Type: volume
              Value: 134
          Titles:
            – TitleFull: Ecological Engineering
              Type: main
ResultId 1