An examination of groundwater discharge and the associated nutrient fluxes into the estuaries of eastern Hainan Island, China using 226Ra
The nutrient concentrations and stoichiometry in a coastal bay/estuary are strongly influenced by the direct riverine discharge and the submarine groundwater discharge (SGD). To estimate the fluxes of submarine groundwater discharge into the Bamen Bay (BB) and the Wanquan River Estuary (WQ) of easte...
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description | The nutrient concentrations and stoichiometry in a coastal bay/estuary are strongly influenced by the direct riverine discharge and the submarine groundwater discharge (SGD). To estimate the fluxes of submarine groundwater discharge into the Bamen Bay (BB) and the Wanquan River Estuary (WQ) of eastern Hainan Island, China, the naturally occurring radium isotope (
226Ra) was measured in water samples collected in the bay/estuary in August 2007 and 2008. Based on the distribution of
226Ra in the surface water, a 3-end-member mixing model was used to estimate the relative contributions of the sources to these systems. Flushing times of 3.9
±
2.7 and 12.9
±
9.3
days were estimated for the BB and WQ, respectively, to calculate the radium fluxes for each system. Based on the radium fluxes from groundwater discharge and the Ra isotopic compositions in the groundwater samples, the estimated SGD fluxes were 3.4
±
5.0
m
3
s
−1 in the BB and 0.08
±
0.08
m
3
s
−1 in the WQ, or 16% and 0.06%, respectively, of the local river discharge. Using this information, the nutrient fluxes from the submarine groundwater discharge seeping into the BB and WQ regions were estimated. In comparison with the nutrient fluxes from the local rivers, the SGD-derived nutrient fluxes played a vital role in controlling the nutrient budgets and stoichiometry in the study area, especially in the BB.
► Excess Ra was found in two estuaries. ► Submarine groundwater discharge was estimated. ► SGD-derived nutrient fluxes controlled the local nutrient budgets and stoichiometry. ► SGD with high N:P ratio impacted coastal ecosystems. ► These effects should be further investigated. |
doi_str_mv | 10.1016/j.scitotenv.2011.06.017 |
format | Article |
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226Ra) was measured in water samples collected in the bay/estuary in August 2007 and 2008. Based on the distribution of
226Ra in the surface water, a 3-end-member mixing model was used to estimate the relative contributions of the sources to these systems. Flushing times of 3.9
±
2.7 and 12.9
±
9.3
days were estimated for the BB and WQ, respectively, to calculate the radium fluxes for each system. Based on the radium fluxes from groundwater discharge and the Ra isotopic compositions in the groundwater samples, the estimated SGD fluxes were 3.4
±
5.0
m
3
s
−1 in the BB and 0.08
±
0.08
m
3
s
−1 in the WQ, or 16% and 0.06%, respectively, of the local river discharge. Using this information, the nutrient fluxes from the submarine groundwater discharge seeping into the BB and WQ regions were estimated. In comparison with the nutrient fluxes from the local rivers, the SGD-derived nutrient fluxes played a vital role in controlling the nutrient budgets and stoichiometry in the study area, especially in the BB.
► Excess Ra was found in two estuaries. ► Submarine groundwater discharge was estimated. ► SGD-derived nutrient fluxes controlled the local nutrient budgets and stoichiometry. ► SGD with high N:P ratio impacted coastal ecosystems. ► These effects should be further investigated.</description><identifier>ISSN: 0048-9697</identifier><identifier>EISSN: 1879-1026</identifier><identifier>DOI: 10.1016/j.scitotenv.2011.06.017</identifier><identifier>PMID: 21719069</identifier><identifier>CODEN: STENDL</identifier><language>eng</language><publisher>Kidlington: Elsevier B.V</publisher><subject>Bay/estuary ; China ; Coastal oceanography, estuaries. Regional oceanography ; Discharge ; Earth sciences ; Earth, ocean, space ; Environmental Monitoring ; Estuaries ; Exact sciences and technology ; External geophysics ; Fluxes ; Geochemistry ; Groundwater ; Groundwater - chemistry ; Groundwater discharge ; Mineralogy ; Nutrient fluxes ; Nutrients ; Physics of the oceans ; Radium ; Radium - analysis ; Radium isotope ; Rivers ; Rivers - chemistry ; Silicates ; Submarines ; Water geochemistry ; Water Movements</subject><ispartof>The Science of the total environment, 2011-09, Vol.409 (19), p.3909-3918</ispartof><rights>2011 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2011 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c380t-722e469272d4ab8ce800fd583da9fec427fa01e59a2a12c9bd5ed6c169ac88ad3</citedby><cites>FETCH-LOGICAL-c380t-722e469272d4ab8ce800fd583da9fec427fa01e59a2a12c9bd5ed6c169ac88ad3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0048969711006401$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24512847$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21719069$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Su, Ni</creatorcontrib><creatorcontrib>Du, Jinzhou</creatorcontrib><creatorcontrib>Moore, Willard S.</creatorcontrib><creatorcontrib>Liu, Sumei</creatorcontrib><creatorcontrib>Zhang, Jing</creatorcontrib><title>An examination of groundwater discharge and the associated nutrient fluxes into the estuaries of eastern Hainan Island, China using 226Ra</title><title>The Science of the total environment</title><addtitle>Sci Total Environ</addtitle><description>The nutrient concentrations and stoichiometry in a coastal bay/estuary are strongly influenced by the direct riverine discharge and the submarine groundwater discharge (SGD). To estimate the fluxes of submarine groundwater discharge into the Bamen Bay (BB) and the Wanquan River Estuary (WQ) of eastern Hainan Island, China, the naturally occurring radium isotope (
226Ra) was measured in water samples collected in the bay/estuary in August 2007 and 2008. Based on the distribution of
226Ra in the surface water, a 3-end-member mixing model was used to estimate the relative contributions of the sources to these systems. Flushing times of 3.9
±
2.7 and 12.9
±
9.3
days were estimated for the BB and WQ, respectively, to calculate the radium fluxes for each system. Based on the radium fluxes from groundwater discharge and the Ra isotopic compositions in the groundwater samples, the estimated SGD fluxes were 3.4
±
5.0
m
3
s
−1 in the BB and 0.08
±
0.08
m
3
s
−1 in the WQ, or 16% and 0.06%, respectively, of the local river discharge. Using this information, the nutrient fluxes from the submarine groundwater discharge seeping into the BB and WQ regions were estimated. In comparison with the nutrient fluxes from the local rivers, the SGD-derived nutrient fluxes played a vital role in controlling the nutrient budgets and stoichiometry in the study area, especially in the BB.
► Excess Ra was found in two estuaries. ► Submarine groundwater discharge was estimated. ► SGD-derived nutrient fluxes controlled the local nutrient budgets and stoichiometry. ► SGD with high N:P ratio impacted coastal ecosystems. ► These effects should be further investigated.</description><subject>Bay/estuary</subject><subject>China</subject><subject>Coastal oceanography, estuaries. Regional oceanography</subject><subject>Discharge</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Environmental Monitoring</subject><subject>Estuaries</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>Fluxes</subject><subject>Geochemistry</subject><subject>Groundwater</subject><subject>Groundwater - chemistry</subject><subject>Groundwater discharge</subject><subject>Mineralogy</subject><subject>Nutrient fluxes</subject><subject>Nutrients</subject><subject>Physics of the oceans</subject><subject>Radium</subject><subject>Radium - analysis</subject><subject>Radium isotope</subject><subject>Rivers</subject><subject>Rivers - chemistry</subject><subject>Silicates</subject><subject>Submarines</subject><subject>Water geochemistry</subject><subject>Water Movements</subject><issn>0048-9697</issn><issn>1879-1026</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkc9uEzEQxlcIREPhFcAXBAey2M7Gf45RVGilSkgIztbEnk0cbexie0t5BN66XhLKjdqH0Wh-883YX9O8YbRllImP-zZbX2LBcNtyylhLRUuZfNLMmJJ6zigXT5sZpZ2aa6HlWfMi5z2tRyr2vDnjTDJNhZ41v1eB4B0cfIDiYyCxJ9sUx-B-QsFEnM92B2mLBIIjZVdjztH6WnQkjCV5DIX0w3iHmfhQ4h8GcxmhlvIkh5CrUiCXUGcEcpWHKvWBrHc1JWP2YUs4F1_hZfOshyHjq1M8b75_uvi2vpxff_l8tV5dz-1C0TKXnGMnNJfcdbBRFhWlvVuqhQPdo-247IEyXGrgwLjVG7dEJywTGqxS4Bbnzbuj7k2KP8a6qjnUR-JQ18I4ZqO0rrBm9HFSdfUyKSv5_r9kZeiCaSlZReURtSnmnLA3N8kfIP0yjJrJW7M3D96ayVtDhane1s7XpyHj5oDuoe-vmRV4ewIgWxj6BMH6_I_rloyrbhJaHTms33zrMU0DMVh0PqEtxkX_6DL3FF7Ijg</recordid><startdate>20110901</startdate><enddate>20110901</enddate><creator>Su, Ni</creator><creator>Du, Jinzhou</creator><creator>Moore, Willard S.</creator><creator>Liu, Sumei</creator><creator>Zhang, Jing</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SU</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>KR7</scope><scope>7X8</scope><scope>7ST</scope><scope>7TG</scope><scope>7TV</scope><scope>KL.</scope><scope>SOI</scope></search><sort><creationdate>20110901</creationdate><title>An examination of groundwater discharge and the associated nutrient fluxes into the estuaries of eastern Hainan Island, China using 226Ra</title><author>Su, Ni ; Du, Jinzhou ; Moore, Willard S. ; Liu, Sumei ; Zhang, Jing</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c380t-722e469272d4ab8ce800fd583da9fec427fa01e59a2a12c9bd5ed6c169ac88ad3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Bay/estuary</topic><topic>China</topic><topic>Coastal oceanography, estuaries. Regional oceanography</topic><topic>Discharge</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Environmental Monitoring</topic><topic>Estuaries</topic><topic>Exact sciences and technology</topic><topic>External geophysics</topic><topic>Fluxes</topic><topic>Geochemistry</topic><topic>Groundwater</topic><topic>Groundwater - chemistry</topic><topic>Groundwater discharge</topic><topic>Mineralogy</topic><topic>Nutrient fluxes</topic><topic>Nutrients</topic><topic>Physics of the oceans</topic><topic>Radium</topic><topic>Radium - analysis</topic><topic>Radium isotope</topic><topic>Rivers</topic><topic>Rivers - chemistry</topic><topic>Silicates</topic><topic>Submarines</topic><topic>Water geochemistry</topic><topic>Water Movements</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Su, Ni</creatorcontrib><creatorcontrib>Du, Jinzhou</creatorcontrib><creatorcontrib>Moore, Willard S.</creatorcontrib><creatorcontrib>Liu, Sumei</creatorcontrib><creatorcontrib>Zhang, Jing</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Environmental Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>MEDLINE - Academic</collection><collection>Environment Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Pollution Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</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>Su, Ni</au><au>Du, Jinzhou</au><au>Moore, Willard S.</au><au>Liu, Sumei</au><au>Zhang, Jing</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An examination of groundwater discharge and the associated nutrient fluxes into the estuaries of eastern Hainan Island, China using 226Ra</atitle><jtitle>The Science of the total environment</jtitle><addtitle>Sci Total Environ</addtitle><date>2011-09-01</date><risdate>2011</risdate><volume>409</volume><issue>19</issue><spage>3909</spage><epage>3918</epage><pages>3909-3918</pages><issn>0048-9697</issn><eissn>1879-1026</eissn><coden>STENDL</coden><abstract>The nutrient concentrations and stoichiometry in a coastal bay/estuary are strongly influenced by the direct riverine discharge and the submarine groundwater discharge (SGD). To estimate the fluxes of submarine groundwater discharge into the Bamen Bay (BB) and the Wanquan River Estuary (WQ) of eastern Hainan Island, China, the naturally occurring radium isotope (
226Ra) was measured in water samples collected in the bay/estuary in August 2007 and 2008. Based on the distribution of
226Ra in the surface water, a 3-end-member mixing model was used to estimate the relative contributions of the sources to these systems. Flushing times of 3.9
±
2.7 and 12.9
±
9.3
days were estimated for the BB and WQ, respectively, to calculate the radium fluxes for each system. Based on the radium fluxes from groundwater discharge and the Ra isotopic compositions in the groundwater samples, the estimated SGD fluxes were 3.4
±
5.0
m
3
s
−1 in the BB and 0.08
±
0.08
m
3
s
−1 in the WQ, or 16% and 0.06%, respectively, of the local river discharge. Using this information, the nutrient fluxes from the submarine groundwater discharge seeping into the BB and WQ regions were estimated. In comparison with the nutrient fluxes from the local rivers, the SGD-derived nutrient fluxes played a vital role in controlling the nutrient budgets and stoichiometry in the study area, especially in the BB.
► Excess Ra was found in two estuaries. ► Submarine groundwater discharge was estimated. ► SGD-derived nutrient fluxes controlled the local nutrient budgets and stoichiometry. ► SGD with high N:P ratio impacted coastal ecosystems. ► These effects should be further investigated.</abstract><cop>Kidlington</cop><pub>Elsevier B.V</pub><pmid>21719069</pmid><doi>10.1016/j.scitotenv.2011.06.017</doi><tpages>10</tpages></addata></record> |
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subjects | Bay/estuary China Coastal oceanography, estuaries. Regional oceanography Discharge Earth sciences Earth, ocean, space Environmental Monitoring Estuaries Exact sciences and technology External geophysics Fluxes Geochemistry Groundwater Groundwater - chemistry Groundwater discharge Mineralogy Nutrient fluxes Nutrients Physics of the oceans Radium Radium - analysis Radium isotope Rivers Rivers - chemistry Silicates Submarines Water geochemistry Water Movements |
title | An examination of groundwater discharge and the associated nutrient fluxes into the estuaries of eastern Hainan Island, China using 226Ra |
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