Natural background concentrations of nutrients in the German Bight area (North Sea)
Natural background concentrations of nutrients are needed for the assessments of eutrophication processes and their status. Natural background concentrations of total nitrogen (TN) and total phosphorus (TP) were modelled for the rivers discharging into the German Bight and the Rhine considering indi...
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| Veröffentlicht in: | Environmental monitoring and assessment 2011-03, Vol.174 (1-4), p.361-388 |
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| creator | Topcu, Dilek Behrendt, Horst Brockmann, U Claussen, U |
| description | Natural background concentrations of nutrients are needed for the assessments of eutrophication processes and their status. Natural background concentrations of total nitrogen (TN) and total phosphorus (TP) were modelled for the rivers discharging into the German Bight and the Rhine considering individual catchment sizes, freshwater flows and soil types. These data were validated by comparison with data from unpolluted rivers. The consistency of modelled and some compiled nutrient concentrations was confirmed by their area-specific load dependency on freshwater discharges. Pristine inorganic nutrient concentrations were deduced from modelled relations to TN and TP in unpolluted rivers. Pristine nutrient gradients between rivers and offshore waters were estimated by linear mixing until a salinity of 32, continued by hyperbolic fits towards recent mean offshore values (salinity 34.5-35). Based on these gradients and recent mean salinities, maps of pristine surface gradients were plotted for the whole German Bight. Variability was transferred from recent conditions as percentage of standard deviation. Reported historical nutrient data and concentrations from unpolluted rivers, coastal and offshore North Sea waters are discussed concerning their relations to natural background conditions. |
| doi_str_mv | 10.1007/s10661-010-1463-y |
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Natural background concentrations of total nitrogen (TN) and total phosphorus (TP) were modelled for the rivers discharging into the German Bight and the Rhine considering individual catchment sizes, freshwater flows and soil types. These data were validated by comparison with data from unpolluted rivers. The consistency of modelled and some compiled nutrient concentrations was confirmed by their area-specific load dependency on freshwater discharges. Pristine inorganic nutrient concentrations were deduced from modelled relations to TN and TP in unpolluted rivers. Pristine nutrient gradients between rivers and offshore waters were estimated by linear mixing until a salinity of 32, continued by hyperbolic fits towards recent mean offshore values (salinity 34.5-35). Based on these gradients and recent mean salinities, maps of pristine surface gradients were plotted for the whole German Bight. Variability was transferred from recent conditions as percentage of standard deviation. Reported historical nutrient data and concentrations from unpolluted rivers, coastal and offshore North Sea waters are discussed concerning their relations to natural background conditions.</description><identifier>ISSN: 0167-6369</identifier><identifier>EISSN: 1573-2959</identifier><identifier>DOI: 10.1007/s10661-010-1463-y</identifier><identifier>PMID: 20437265</identifier><identifier>CODEN: EMASDH</identifier><language>eng</language><publisher>Dordrecht: Dordrecht : Springer Netherlands</publisher><subject>Animal and plant ecology ; Animal, plant and microbial ecology ; Applied ecology ; Aquatic ecosystems ; Atmospheric Protection/Air Quality Control/Air Pollution ; Biological and medical sciences ; coastal water ; Earth and Environmental Science ; Ecology ; Ecotoxicology ; Ecotoxicology, biological effects of pollution ; Environment ; Environmental Management ; Environmental monitoring ; Environmental testing ; Eutrophication ; Eutrophication assessments ; Fresh water ecosystems ; Freshwater ; Fundamental and applied biological sciences. Psychology ; General aspects ; Germany ; Groundwater ; Monitoring/Environmental Analysis ; Natural background concentrations ; Nitrogen - analysis ; Nutrient concentrations ; Nutrients ; Phosphorus ; Phosphorus - analysis ; Retention ; Rivers ; Salinity ; Seawater - chemistry ; Soil types ; Soils ; Studies ; Synecology</subject><ispartof>Environmental monitoring and assessment, 2011-03, Vol.174 (1-4), p.361-388</ispartof><rights>Springer Science+Business Media B.V. 2010</rights><rights>2015 INIST-CNRS</rights><rights>Springer Science+Business Media B.V. 2011</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c456t-5800fc8b3858f305a1c25506d3f5e969482f5d5fdba96fe7b14dc3529658564a3</citedby><cites>FETCH-LOGICAL-c456t-5800fc8b3858f305a1c25506d3f5e969482f5d5fdba96fe7b14dc3529658564a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10661-010-1463-y$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10661-010-1463-y$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=23854266$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20437265$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Topcu, Dilek</creatorcontrib><creatorcontrib>Behrendt, Horst</creatorcontrib><creatorcontrib>Brockmann, U</creatorcontrib><creatorcontrib>Claussen, U</creatorcontrib><title>Natural background concentrations of nutrients in the German Bight area (North Sea)</title><title>Environmental monitoring and assessment</title><addtitle>Environ Monit Assess</addtitle><addtitle>Environ Monit Assess</addtitle><description>Natural background concentrations of nutrients are needed for the assessments of eutrophication processes and their status. Natural background concentrations of total nitrogen (TN) and total phosphorus (TP) were modelled for the rivers discharging into the German Bight and the Rhine considering individual catchment sizes, freshwater flows and soil types. These data were validated by comparison with data from unpolluted rivers. The consistency of modelled and some compiled nutrient concentrations was confirmed by their area-specific load dependency on freshwater discharges. Pristine inorganic nutrient concentrations were deduced from modelled relations to TN and TP in unpolluted rivers. Pristine nutrient gradients between rivers and offshore waters were estimated by linear mixing until a salinity of 32, continued by hyperbolic fits towards recent mean offshore values (salinity 34.5-35). Based on these gradients and recent mean salinities, maps of pristine surface gradients were plotted for the whole German Bight. Variability was transferred from recent conditions as percentage of standard deviation. Reported historical nutrient data and concentrations from unpolluted rivers, coastal and offshore North Sea waters are discussed concerning their relations to natural background conditions.</description><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Applied ecology</subject><subject>Aquatic ecosystems</subject><subject>Atmospheric Protection/Air Quality Control/Air Pollution</subject><subject>Biological and medical sciences</subject><subject>coastal water</subject><subject>Earth and Environmental Science</subject><subject>Ecology</subject><subject>Ecotoxicology</subject><subject>Ecotoxicology, biological effects of pollution</subject><subject>Environment</subject><subject>Environmental Management</subject><subject>Environmental monitoring</subject><subject>Environmental testing</subject><subject>Eutrophication</subject><subject>Eutrophication assessments</subject><subject>Fresh water ecosystems</subject><subject>Freshwater</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General aspects</subject><subject>Germany</subject><subject>Groundwater</subject><subject>Monitoring/Environmental Analysis</subject><subject>Natural background concentrations</subject><subject>Nitrogen - analysis</subject><subject>Nutrient concentrations</subject><subject>Nutrients</subject><subject>Phosphorus</subject><subject>Phosphorus - analysis</subject><subject>Retention</subject><subject>Rivers</subject><subject>Salinity</subject><subject>Seawater - chemistry</subject><subject>Soil types</subject><subject>Soils</subject><subject>Studies</subject><subject>Synecology</subject><issn>0167-6369</issn><issn>1573-2959</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>BENPR</sourceid><recordid>eNqF0ctu1DAUBmALgehQeAA2YCEhYBE4vsZeQgUFqSqLoevoxLFnUmbs1k4W8_a4ykAlFrCybH_n-PIT8pzBewbQfigMtGYNMGiY1KI5PCArplrRcKvsQ7ICpttGC21PyJNSrgHAttI-JiccpGi5ViuyvsRpzrijPbqfm5zmOFCXovNxyjiNKRaaAo3zlMe6VOgY6bT19NznPUb6adxsJ4rZI317mfK0pWuP756SRwF3xT87jqfk6svnH2dfm4vv59_OPl40Tio9NcoABGd6YZQJAhQyx5UCPYigvNVWGh7UoMLQo9XBtz2TgxOKW62M0hLFKXmz9L3J6Xb2Zer2Y3F-t8Po01y6qtpWM8v-L6UFMK3hVb76S16nOcf6jIqMkmC0rIgtyOVUSvahu8njHvOhY9DdJdMtyXRwN6_JdIda8-LYeO73fvhT8TuKCl4fARaHu5AxurHcu_pNkmtdHV9cqVtx4_P9Df91-sulKGDqcJNr46s1ByaAWWGE5uIXvsKtWA</recordid><startdate>20110301</startdate><enddate>20110301</enddate><creator>Topcu, Dilek</creator><creator>Behrendt, Horst</creator><creator>Brockmann, U</creator><creator>Claussen, U</creator><general>Dordrecht : Springer Netherlands</general><general>Springer Netherlands</general><general>Springer</general><general>Springer Nature B.V</general><scope>FBQ</scope><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>3V.</scope><scope>7QH</scope><scope>7QL</scope><scope>7SN</scope><scope>7ST</scope><scope>7T7</scope><scope>7TG</scope><scope>7TN</scope><scope>7U7</scope><scope>7UA</scope><scope>7WY</scope><scope>7WZ</scope><scope>7X7</scope><scope>7XB</scope><scope>87Z</scope><scope>88E</scope><scope>88I</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>8FL</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BEZIV</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FR3</scope><scope>FRNLG</scope><scope>FYUFA</scope><scope>F~G</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H97</scope><scope>HCIFZ</scope><scope>K60</scope><scope>K6~</scope><scope>K9.</scope><scope>KL.</scope><scope>L.-</scope><scope>L.G</scope><scope>M0C</scope><scope>M0S</scope><scope>M1P</scope><scope>M2P</scope><scope>M7N</scope><scope>P64</scope><scope>PATMY</scope><scope>PQBIZ</scope><scope>PQBZA</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>SOI</scope><scope>7X8</scope><scope>H95</scope></search><sort><creationdate>20110301</creationdate><title>Natural background concentrations of nutrients in the German Bight area (North Sea)</title><author>Topcu, Dilek ; Behrendt, Horst ; Brockmann, U ; Claussen, U</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c456t-5800fc8b3858f305a1c25506d3f5e969482f5d5fdba96fe7b14dc3529658564a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Applied ecology</topic><topic>Aquatic ecosystems</topic><topic>Atmospheric Protection/Air Quality Control/Air Pollution</topic><topic>Biological and medical sciences</topic><topic>coastal water</topic><topic>Earth and Environmental Science</topic><topic>Ecology</topic><topic>Ecotoxicology</topic><topic>Ecotoxicology, biological effects of pollution</topic><topic>Environment</topic><topic>Environmental Management</topic><topic>Environmental monitoring</topic><topic>Environmental testing</topic><topic>Eutrophication</topic><topic>Eutrophication assessments</topic><topic>Fresh water ecosystems</topic><topic>Freshwater</topic><topic>Fundamental and applied biological sciences. 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Natural background concentrations of total nitrogen (TN) and total phosphorus (TP) were modelled for the rivers discharging into the German Bight and the Rhine considering individual catchment sizes, freshwater flows and soil types. These data were validated by comparison with data from unpolluted rivers. The consistency of modelled and some compiled nutrient concentrations was confirmed by their area-specific load dependency on freshwater discharges. Pristine inorganic nutrient concentrations were deduced from modelled relations to TN and TP in unpolluted rivers. Pristine nutrient gradients between rivers and offshore waters were estimated by linear mixing until a salinity of 32, continued by hyperbolic fits towards recent mean offshore values (salinity 34.5-35). Based on these gradients and recent mean salinities, maps of pristine surface gradients were plotted for the whole German Bight. Variability was transferred from recent conditions as percentage of standard deviation. Reported historical nutrient data and concentrations from unpolluted rivers, coastal and offshore North Sea waters are discussed concerning their relations to natural background conditions.</abstract><cop>Dordrecht</cop><pub>Dordrecht : Springer Netherlands</pub><pmid>20437265</pmid><doi>10.1007/s10661-010-1463-y</doi><tpages>28</tpages></addata></record> |
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| subjects | Animal and plant ecology Animal, plant and microbial ecology Applied ecology Aquatic ecosystems Atmospheric Protection/Air Quality Control/Air Pollution Biological and medical sciences coastal water Earth and Environmental Science Ecology Ecotoxicology Ecotoxicology, biological effects of pollution Environment Environmental Management Environmental monitoring Environmental testing Eutrophication Eutrophication assessments Fresh water ecosystems Freshwater Fundamental and applied biological sciences. Psychology General aspects Germany Groundwater Monitoring/Environmental Analysis Natural background concentrations Nitrogen - analysis Nutrient concentrations Nutrients Phosphorus Phosphorus - analysis Retention Rivers Salinity Seawater - chemistry Soil types Soils Studies Synecology |
| title | Natural background concentrations of nutrients in the German Bight area (North Sea) |
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