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The oxygen isotopic composition of phosphate in river water and its potential sources in the Upper River Taw catchment, UK
The need to reduce both point and diffuse phosphorus pollution to aquatic ecosystems is widely recognised and in order to achieve this, identification of the different pollutant sources is essential. Recently, a stable isotope approach using oxygen isotopes within phosphate (δ18OPO4) has been used i...
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| Published in: | The Science of the total environment 2017-01, Vol.574, p.680-690 |
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| creator | Granger, Steven J. Heaton, Tim H.E. Pfahler, Verena Blackwell, Martin S.A. Yuan, Huimin Collins, Adrian L. |
| description | The need to reduce both point and diffuse phosphorus pollution to aquatic ecosystems is widely recognised and in order to achieve this, identification of the different pollutant sources is essential. Recently, a stable isotope approach using oxygen isotopes within phosphate (δ18OPO4) has been used in phosphorus source tracing studies. This approach was applied in a one-off survey in September 2013 to the River Taw catchment in south-west England where elevated levels of phosphate have been reported. River water δ18OPO4 along the main channel varied little, ranging from +17.1 to +18.8‰. This was no >0.3‰ different to that of the isotopic equilibrium with water (Eδ18OPO4). The δ18OPO4 in the tributaries was more variable (+17.1 to +18.8‰), but only deviated from Eδ18OPO4 by between 0.4 and 0.9‰. Several potential phosphate sources within the catchment were sampled and most had a narrow range of δ18OPO4 values similar to that of river Eδ18OPO4. Discharge from two waste water treatment plants had different and distinct δ18OPO4 from one another ranging between +16.4 and +19.6‰ and similar values to that of a dairy factory final effluent (+16.5 to +17.8‰), mains tap water (+17.8 to +18.4‰), and that of the phosphate extracted from river channel bed sediment (+16.7 to +17.6‰). Inorganic fertilizers had a wide range of values (+13.3 to +25.9‰) while stored animal wastes were consistently lower (+12.0 to +15.0‰) than most other sources and Eδ18OPO4. The distinct signals from the waste water treatment plants were lost within the river over a short distance suggesting that rapid microbial cycling of phosphate was occurring, because microbial cycling shifts the isotopic signal towards Eδ18OPO4. This study has added to the global inventory of phosphate source δ18OPO4 values, but also demonstrated the limitations of this approach to identifying phosphate sources, especially at times when microbial cycling is high.
[Display omitted]
•Can sources of aquatic PO4 be traced using its stable oxygen isotope ratio?•Various PO4 sources within a catchment were analysed for their δ18OPO4.•River δ18OPO4 indicated that rapid microbial cycling of PO4 was occurring.•This method appears inappropriate in systems where PO4 cycling is rapid. |
| doi_str_mv | 10.1016/j.scitotenv.2016.09.007 |
| format | article |
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[Display omitted]
•Can sources of aquatic PO4 be traced using its stable oxygen isotope ratio?•Various PO4 sources within a catchment were analysed for their δ18OPO4.•River δ18OPO4 indicated that rapid microbial cycling of PO4 was occurring.•This method appears inappropriate in systems where PO4 cycling is rapid.</description><identifier>ISSN: 0048-9697</identifier><identifier>EISSN: 1879-1026</identifier><identifier>DOI: 10.1016/j.scitotenv.2016.09.007</identifier><identifier>PMID: 27697742</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Animal slurry ; Fertilizers ; Freshwater ; Microbial cycling ; Phosphorus ; Stable isotopes ; Tracing</subject><ispartof>The Science of the total environment, 2017-01, Vol.574, p.680-690</ispartof><rights>2016 Office national des forêts</rights><rights>Copyright © 2016 Office national des forêts. Published by Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c519t-5bbf1faf6c438d70dab7934deed0f10028231c28316b96bd3808d96f1e8d55553</citedby><cites>FETCH-LOGICAL-c519t-5bbf1faf6c438d70dab7934deed0f10028231c28316b96bd3808d96f1e8d55553</cites><orcidid>0000-0002-7610-0484</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,786,790,27957,27958</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27697742$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Granger, Steven J.</creatorcontrib><creatorcontrib>Heaton, Tim H.E.</creatorcontrib><creatorcontrib>Pfahler, Verena</creatorcontrib><creatorcontrib>Blackwell, Martin S.A.</creatorcontrib><creatorcontrib>Yuan, Huimin</creatorcontrib><creatorcontrib>Collins, Adrian L.</creatorcontrib><title>The oxygen isotopic composition of phosphate in river water and its potential sources in the Upper River Taw catchment, UK</title><title>The Science of the total environment</title><addtitle>Sci Total Environ</addtitle><description>The need to reduce both point and diffuse phosphorus pollution to aquatic ecosystems is widely recognised and in order to achieve this, identification of the different pollutant sources is essential. Recently, a stable isotope approach using oxygen isotopes within phosphate (δ18OPO4) has been used in phosphorus source tracing studies. This approach was applied in a one-off survey in September 2013 to the River Taw catchment in south-west England where elevated levels of phosphate have been reported. River water δ18OPO4 along the main channel varied little, ranging from +17.1 to +18.8‰. This was no >0.3‰ different to that of the isotopic equilibrium with water (Eδ18OPO4). The δ18OPO4 in the tributaries was more variable (+17.1 to +18.8‰), but only deviated from Eδ18OPO4 by between 0.4 and 0.9‰. Several potential phosphate sources within the catchment were sampled and most had a narrow range of δ18OPO4 values similar to that of river Eδ18OPO4. Discharge from two waste water treatment plants had different and distinct δ18OPO4 from one another ranging between +16.4 and +19.6‰ and similar values to that of a dairy factory final effluent (+16.5 to +17.8‰), mains tap water (+17.8 to +18.4‰), and that of the phosphate extracted from river channel bed sediment (+16.7 to +17.6‰). Inorganic fertilizers had a wide range of values (+13.3 to +25.9‰) while stored animal wastes were consistently lower (+12.0 to +15.0‰) than most other sources and Eδ18OPO4. The distinct signals from the waste water treatment plants were lost within the river over a short distance suggesting that rapid microbial cycling of phosphate was occurring, because microbial cycling shifts the isotopic signal towards Eδ18OPO4. This study has added to the global inventory of phosphate source δ18OPO4 values, but also demonstrated the limitations of this approach to identifying phosphate sources, especially at times when microbial cycling is high.
[Display omitted]
•Can sources of aquatic PO4 be traced using its stable oxygen isotope ratio?•Various PO4 sources within a catchment were analysed for their δ18OPO4.•River δ18OPO4 indicated that rapid microbial cycling of PO4 was occurring.•This method appears inappropriate in systems where PO4 cycling is rapid.</description><subject>Animal slurry</subject><subject>Fertilizers</subject><subject>Freshwater</subject><subject>Microbial cycling</subject><subject>Phosphorus</subject><subject>Stable isotopes</subject><subject>Tracing</subject><issn>0048-9697</issn><issn>1879-1026</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqFkEFv1DAQhS0EotvCXwAfOZAwTrKxfawqoIhKSGj3bDn2hPVqExvbu6X8ehy29MpcRjP63hv7EfKWQc2A9R_2dTIu-4zzqW7KogZZA_BnZMUElxWDpn9OVgCdqGQv-QW5TGkPpbhgL8lFw8uSd82K_N7skPpfDz9wpi757IMz1Pgp-OSy8zP1Iw07n8JOZ6RuptGdMNL7MkWqZ0tdTjQsD8lOH2jyx2gwLWAuxtsQCvb9r2Sj76nR2eymwr6n26-vyItRHxK-fuxXZPvp4-bmtrr79vnLzfVdZdZM5mo9DCMb9dibrhWWg9UDl21nES2MDKARTctMI1rWD7IfbCtAWNmPDIVdl2qvyLuzb4j-5xFTVpNLBg8HPaM_JsVE13cgeNsUlJ9RE31KEUcVopt0fFAM1BK82qun4NUSvAKpSqpF-ebxyHGY0D7p_iVdgOszgOWrJ4dxMcLZoHURTVbWu_8e-QMPKprv</recordid><startdate>20170101</startdate><enddate>20170101</enddate><creator>Granger, Steven J.</creator><creator>Heaton, Tim H.E.</creator><creator>Pfahler, Verena</creator><creator>Blackwell, Martin S.A.</creator><creator>Yuan, Huimin</creator><creator>Collins, Adrian L.</creator><general>Elsevier B.V</general><scope>6I.</scope><scope>AAFTH</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7ST</scope><scope>7TV</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0002-7610-0484</orcidid></search><sort><creationdate>20170101</creationdate><title>The oxygen isotopic composition of phosphate in river water and its potential sources in the Upper River Taw catchment, UK</title><author>Granger, Steven J. ; Heaton, Tim H.E. ; Pfahler, Verena ; Blackwell, Martin S.A. ; Yuan, Huimin ; Collins, Adrian L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c519t-5bbf1faf6c438d70dab7934deed0f10028231c28316b96bd3808d96f1e8d55553</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Animal slurry</topic><topic>Fertilizers</topic><topic>Freshwater</topic><topic>Microbial cycling</topic><topic>Phosphorus</topic><topic>Stable isotopes</topic><topic>Tracing</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Granger, Steven J.</creatorcontrib><creatorcontrib>Heaton, Tim H.E.</creatorcontrib><creatorcontrib>Pfahler, Verena</creatorcontrib><creatorcontrib>Blackwell, Martin S.A.</creatorcontrib><creatorcontrib>Yuan, Huimin</creatorcontrib><creatorcontrib>Collins, Adrian L.</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Aqualine</collection><collection>Environment Abstracts</collection><collection>Pollution Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><jtitle>The Science of the total environment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Granger, Steven J.</au><au>Heaton, Tim H.E.</au><au>Pfahler, Verena</au><au>Blackwell, Martin S.A.</au><au>Yuan, Huimin</au><au>Collins, Adrian L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The oxygen isotopic composition of phosphate in river water and its potential sources in the Upper River Taw catchment, UK</atitle><jtitle>The Science of the total environment</jtitle><addtitle>Sci Total Environ</addtitle><date>2017-01-01</date><risdate>2017</risdate><volume>574</volume><spage>680</spage><epage>690</epage><pages>680-690</pages><issn>0048-9697</issn><eissn>1879-1026</eissn><notes>ObjectType-Article-1</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-2</notes><notes>content type line 23</notes><abstract>The need to reduce both point and diffuse phosphorus pollution to aquatic ecosystems is widely recognised and in order to achieve this, identification of the different pollutant sources is essential. Recently, a stable isotope approach using oxygen isotopes within phosphate (δ18OPO4) has been used in phosphorus source tracing studies. This approach was applied in a one-off survey in September 2013 to the River Taw catchment in south-west England where elevated levels of phosphate have been reported. River water δ18OPO4 along the main channel varied little, ranging from +17.1 to +18.8‰. This was no >0.3‰ different to that of the isotopic equilibrium with water (Eδ18OPO4). The δ18OPO4 in the tributaries was more variable (+17.1 to +18.8‰), but only deviated from Eδ18OPO4 by between 0.4 and 0.9‰. Several potential phosphate sources within the catchment were sampled and most had a narrow range of δ18OPO4 values similar to that of river Eδ18OPO4. Discharge from two waste water treatment plants had different and distinct δ18OPO4 from one another ranging between +16.4 and +19.6‰ and similar values to that of a dairy factory final effluent (+16.5 to +17.8‰), mains tap water (+17.8 to +18.4‰), and that of the phosphate extracted from river channel bed sediment (+16.7 to +17.6‰). Inorganic fertilizers had a wide range of values (+13.3 to +25.9‰) while stored animal wastes were consistently lower (+12.0 to +15.0‰) than most other sources and Eδ18OPO4. The distinct signals from the waste water treatment plants were lost within the river over a short distance suggesting that rapid microbial cycling of phosphate was occurring, because microbial cycling shifts the isotopic signal towards Eδ18OPO4. This study has added to the global inventory of phosphate source δ18OPO4 values, but also demonstrated the limitations of this approach to identifying phosphate sources, especially at times when microbial cycling is high.
[Display omitted]
•Can sources of aquatic PO4 be traced using its stable oxygen isotope ratio?•Various PO4 sources within a catchment were analysed for their δ18OPO4.•River δ18OPO4 indicated that rapid microbial cycling of PO4 was occurring.•This method appears inappropriate in systems where PO4 cycling is rapid.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>27697742</pmid><doi>10.1016/j.scitotenv.2016.09.007</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-7610-0484</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Animal slurry Fertilizers Freshwater Microbial cycling Phosphorus Stable isotopes Tracing |
| title | The oxygen isotopic composition of phosphate in river water and its potential sources in the Upper River Taw catchment, UK |
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