Characterization of Phosphate Compounds along a Catena from Arable and Wetland Soil to Sediments in a Baltic Sea lagoon
Phosphorus (P) is an indispensable nutrient for arable crops, but at the same time, contributes to excessive eutrophication in aquatic ecosystems. Knowledge about P is essential to assess the possible risks of P being transported towards vulnerable aquatic ecosystems. Our objective was to characteri...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Soil Systems |
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| Online Access: | https://www.mdpi.com/2571-8789/7/1/15 |
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| author | Julia Prüter Rhena Schumann Wantana Klysubun Peter Leinweber |
| author_facet | Julia Prüter Rhena Schumann Wantana Klysubun Peter Leinweber |
| author_sort | Julia Prüter |
| collection | DOAJ |
| description | Phosphorus (P) is an indispensable nutrient for arable crops, but at the same time, contributes to excessive eutrophication in aquatic ecosystems. Knowledge about P is essential to assess the possible risks of P being transported towards vulnerable aquatic ecosystems. Our objective was to characterize P along a catena from arable and wetland soils towards aquatic sediments of a shallow lagoon of the Baltic Sea. The characterization of P in soil and sediment samples included a modified sequential P fractionation and P <i>K</i>-edge X-ray absorption near edge structure (XANES) spectroscopy. The concentrations of total P ranged between 390 and 430 mg kg<sup>−1</sup> in the arable soils, between 728 and 2258 mg kg<sup>−1</sup> in wetland soils and between 132 and 602 mg kg<sup>−1</sup> in lagoon sediments. Generally, two sinks for P were revealed along the catena. The wetland soil trapped moderately stable P, Al-P and molybdate-unreactive P (MUP), which are most likely organically bound phosphates. Sediments at the deepest position of the catena acted as a sink for, MUP compounds among the lagoon sediments. Thus, wetlands formed by reed belts can help to prevent the direct transfer of P from arable soils to adjacent waters and deeper basins and help to avoid excessive eutrophication in shallow aquatic ecosystems. |
| first_indexed | 2024-03-11T05:53:58Z |
| format | Article |
| id | doaj.art-06f791688a33409f9bec99f8f29272bc |
| institution | Directory Open Access Journal |
| issn | 2571-8789 |
| language | English |
| last_indexed | 2024-03-11T05:53:58Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Soil Systems |
| spelling | doaj.art-06f791688a33409f9bec99f8f29272bc2023-11-17T13:52:55ZengMDPI AGSoil Systems2571-87892023-02-01711510.3390/soilsystems7010015Characterization of Phosphate Compounds along a Catena from Arable and Wetland Soil to Sediments in a Baltic Sea lagoonJulia Prüter0Rhena Schumann1Wantana Klysubun2Peter Leinweber3Soil Science, Faculty of Agricultural and Environmental Science, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, GermanyDepartment of Applied Ecology, Institute of Biological Sciences, University of Rostock, Albert-Einstein-Straße 3, 18059 Rostock, GermanySynchrotron Light Research Institute, Muang District, 111 University Avenue, Nakhon Ratchasima 3000, ThailandSoil Science, Faculty of Agricultural and Environmental Science, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, GermanyPhosphorus (P) is an indispensable nutrient for arable crops, but at the same time, contributes to excessive eutrophication in aquatic ecosystems. Knowledge about P is essential to assess the possible risks of P being transported towards vulnerable aquatic ecosystems. Our objective was to characterize P along a catena from arable and wetland soils towards aquatic sediments of a shallow lagoon of the Baltic Sea. The characterization of P in soil and sediment samples included a modified sequential P fractionation and P <i>K</i>-edge X-ray absorption near edge structure (XANES) spectroscopy. The concentrations of total P ranged between 390 and 430 mg kg<sup>−1</sup> in the arable soils, between 728 and 2258 mg kg<sup>−1</sup> in wetland soils and between 132 and 602 mg kg<sup>−1</sup> in lagoon sediments. Generally, two sinks for P were revealed along the catena. The wetland soil trapped moderately stable P, Al-P and molybdate-unreactive P (MUP), which are most likely organically bound phosphates. Sediments at the deepest position of the catena acted as a sink for, MUP compounds among the lagoon sediments. Thus, wetlands formed by reed belts can help to prevent the direct transfer of P from arable soils to adjacent waters and deeper basins and help to avoid excessive eutrophication in shallow aquatic ecosystems.https://www.mdpi.com/2571-8789/7/1/15phosphorusgradientsequential fractionationXANES spectroscopy |
| spellingShingle | Julia Prüter Rhena Schumann Wantana Klysubun Peter Leinweber Characterization of Phosphate Compounds along a Catena from Arable and Wetland Soil to Sediments in a Baltic Sea lagoon Soil Systems phosphorus gradient sequential fractionation XANES spectroscopy |
| title | Characterization of Phosphate Compounds along a Catena from Arable and Wetland Soil to Sediments in a Baltic Sea lagoon |
| title_full | Characterization of Phosphate Compounds along a Catena from Arable and Wetland Soil to Sediments in a Baltic Sea lagoon |
| title_fullStr | Characterization of Phosphate Compounds along a Catena from Arable and Wetland Soil to Sediments in a Baltic Sea lagoon |
| title_full_unstemmed | Characterization of Phosphate Compounds along a Catena from Arable and Wetland Soil to Sediments in a Baltic Sea lagoon |
| title_short | Characterization of Phosphate Compounds along a Catena from Arable and Wetland Soil to Sediments in a Baltic Sea lagoon |
| title_sort | characterization of phosphate compounds along a catena from arable and wetland soil to sediments in a baltic sea lagoon |
| topic | phosphorus gradient sequential fractionation XANES spectroscopy |
| url | https://www.mdpi.com/2571-8789/7/1/15 |
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