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Particle deposition, resuspension and phosphorus accumulation in small constructed wetlands

To improve understanding of phosphorus (P) retention processes in small constructed wetlands (CWs), we analysed variations in sediment deposition and accumulation in four CWs on clay soils in east-central Sweden. Sediment deposition (in traps) generally exceeded the total suspended solids (TSS) load...

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Autores principales: Geranmayeh, Pia, Johannesson, Karin M., Ulén, Barbro, Tonderski, Karin S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Netherlands 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5722750/
https://www.ncbi.nlm.nih.gov/pubmed/29164538
http://dx.doi.org/10.1007/s13280-017-0992-9
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author Geranmayeh, Pia
Johannesson, Karin M.
Ulén, Barbro
Tonderski, Karin S.
author_facet Geranmayeh, Pia
Johannesson, Karin M.
Ulén, Barbro
Tonderski, Karin S.
author_sort Geranmayeh, Pia
collection PubMed
description To improve understanding of phosphorus (P) retention processes in small constructed wetlands (CWs), we analysed variations in sediment deposition and accumulation in four CWs on clay soils in east-central Sweden. Sediment deposition (in traps) generally exceeded the total suspended solids (TSS) load suggesting that resuspension and wetland base erosion were important. This was confirmed by quantification of particle accumulation (on plates) (1–23 kg m(−2) year(−1)), which amounted to only 13–23% of trap deposition. Spatial mean P concentrations in accumulated sediment on plates (0.09–0.15%) were generally similar to temporal mean P concentrations of particles in water (0.11–0.15%). Deposition/accumulation was minor in one wetland with high hydraulic load (400 m year(−1)), suggesting that such small wetlands are not efficient as particle sinks. Economic support for CWs are given, but design and landscape position are here demonstrated to be important for effective P retention. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s13280-017-0992-9) contains supplementary material, which is available to authorized users.
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spelling pubmed-57227502017-12-14 Particle deposition, resuspension and phosphorus accumulation in small constructed wetlands Geranmayeh, Pia Johannesson, Karin M. Ulén, Barbro Tonderski, Karin S. Ambio Article To improve understanding of phosphorus (P) retention processes in small constructed wetlands (CWs), we analysed variations in sediment deposition and accumulation in four CWs on clay soils in east-central Sweden. Sediment deposition (in traps) generally exceeded the total suspended solids (TSS) load suggesting that resuspension and wetland base erosion were important. This was confirmed by quantification of particle accumulation (on plates) (1–23 kg m(−2) year(−1)), which amounted to only 13–23% of trap deposition. Spatial mean P concentrations in accumulated sediment on plates (0.09–0.15%) were generally similar to temporal mean P concentrations of particles in water (0.11–0.15%). Deposition/accumulation was minor in one wetland with high hydraulic load (400 m year(−1)), suggesting that such small wetlands are not efficient as particle sinks. Economic support for CWs are given, but design and landscape position are here demonstrated to be important for effective P retention. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s13280-017-0992-9) contains supplementary material, which is available to authorized users. Springer Netherlands 2017-11-21 2018-01 /pmc/articles/PMC5722750/ /pubmed/29164538 http://dx.doi.org/10.1007/s13280-017-0992-9 Text en © The Author(s) 2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Article
Geranmayeh, Pia
Johannesson, Karin M.
Ulén, Barbro
Tonderski, Karin S.
Particle deposition, resuspension and phosphorus accumulation in small constructed wetlands
title Particle deposition, resuspension and phosphorus accumulation in small constructed wetlands
title_full Particle deposition, resuspension and phosphorus accumulation in small constructed wetlands
title_fullStr Particle deposition, resuspension and phosphorus accumulation in small constructed wetlands
title_full_unstemmed Particle deposition, resuspension and phosphorus accumulation in small constructed wetlands
title_short Particle deposition, resuspension and phosphorus accumulation in small constructed wetlands
title_sort particle deposition, resuspension and phosphorus accumulation in small constructed wetlands
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5722750/
https://www.ncbi.nlm.nih.gov/pubmed/29164538
http://dx.doi.org/10.1007/s13280-017-0992-9
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