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Nonpoint source discharges of nutrients from Piedmont watersheds of Chesapeake Bay
We measured annual discharges of water, sediments, and nutrients from 10 watersheds with differing proportions of agricultural lands in the Piedmont physiographic province of the Chesapeake Bay drainage. Flow-weighted mean concentrations of total N, nitrate, and dissolved silicate in watershed disch...
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| Published in: | Journal of the American Water Resources Association 1997-06, Vol.33 (3), p.631-645 |
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| Language: | English |
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| container_end_page | 645 |
| container_issue | 3 |
| container_start_page | 631 |
| container_title | Journal of the American Water Resources Association |
| container_volume | 33 |
| creator | Jordan, T.E. (Smithsonian Environmental Research Center, Edgewater, MD.) Correll, D.L Weller, D.E |
| description | We measured annual discharges of water, sediments, and nutrients from 10 watersheds with differing proportions of agricultural lands in the Piedmont physiographic province of the Chesapeake Bay drainage. Flow-weighted mean concentrations of total N, nitrate, and dissolved silicate in watershed discharges were correlated with the proportion of cropland in the watershed. In contrast, concentrations of P species did not correlate with cropland. Organic P and C correlated with the concentration of suspended particles, which differed among watersheds. Thus, the ratio of N:P:Si in discharges differed greatly among watersheds, potentially affecting N, P or Si limitation of phytoplankton growth in the receiving waters. Simple regression models of N discharge versus the percentage of cropland suggest that croplands discharge 29-42 kg N ha-1 yr-1 and other lands discharge 1.2-5.8 kg N ha-1 yr-1. We estimated net anthropogenic input of N to croplands and other lands using county level data on agriculture and N deposition from the atmosphere. For most of the study watersheds, N discharge amounted to less than half of the net anthropogenic N |
| doi_str_mv | 10.1111/j.1752-1688.1997.tb03538.x |
| format | article |
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(Smithsonian Environmental Research Center, Edgewater, MD.) ; Correll, D.L ; Weller, D.E</creator><creatorcontrib>Jordan, T.E. (Smithsonian Environmental Research Center, Edgewater, MD.) ; Correll, D.L ; Weller, D.E</creatorcontrib><description>We measured annual discharges of water, sediments, and nutrients from 10 watersheds with differing proportions of agricultural lands in the Piedmont physiographic province of the Chesapeake Bay drainage. Flow-weighted mean concentrations of total N, nitrate, and dissolved silicate in watershed discharges were correlated with the proportion of cropland in the watershed. In contrast, concentrations of P species did not correlate with cropland. Organic P and C correlated with the concentration of suspended particles, which differed among watersheds. Thus, the ratio of N:P:Si in discharges differed greatly among watersheds, potentially affecting N, P or Si limitation of phytoplankton growth in the receiving waters. Simple regression models of N discharge versus the percentage of cropland suggest that croplands discharge 29-42 kg N ha-1 yr-1 and other lands discharge 1.2-5.8 kg N ha-1 yr-1. We estimated net anthropogenic input of N to croplands and other lands using county level data on agriculture and N deposition from the atmosphere. For most of the study watersheds, N discharge amounted to less than half of the net anthropogenic N</description><identifier>ISSN: 1093-474X</identifier><identifier>EISSN: 1752-1688</identifier><identifier>DOI: 10.1111/j.1752-1688.1997.tb03538.x</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>agriculture ; AGUA ; ASPECTOS FISIOGRAFICOS ; AZOTE ; BASSIN VERSANT ; Brackish ; Chesapeake Bay ; COASTAL PLAINS ; COMPORTAMIENTO HUMANO ; COMPORTEMENT HUMAIN ; CORRELATION ; CUENCAS HIDROGRAFICAS ; DRAINAGE ; DRENAJE ; EAU ; ELEMENT GEOMORPHOLOGIQUE ; FARMLAND ; FOSFORO ; Freshwater ; HUMAN ACTIVITY ; HUMAN BEHAVIOUR ; LLANURA COSTERA ; Marine ; MARYLAND ; NITROGEN ; NITROGENO ; NONPOINT SOURCE POLLUTION ; NUTRIENTES ; NUTRIENTS ; PENNSYLVANIA ; PENNSYLVANIE ; PHOSPHORE ; PHOSPHORUS ; PHYSIOGRAPHIC FEATURES ; PLAINE COTIERE ; POLLUTION ; POLUCION ; SEDIMENT ; SEDIMENTO ; SILICATE ; SILICATES ; SILICATOS ; SUBSTANCE NUTRITIVE ; TERRE AGRICOLE ; TIERRAS AGRICOLAS ; WATER ; water quality ; WATERSHEDS</subject><ispartof>Journal of the American Water Resources Association, 1997-06, Vol.33 (3), p.631-645</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Jordan, T.E. (Smithsonian Environmental Research Center, Edgewater, MD.)</creatorcontrib><creatorcontrib>Correll, D.L</creatorcontrib><creatorcontrib>Weller, D.E</creatorcontrib><title>Nonpoint source discharges of nutrients from Piedmont watersheds of Chesapeake Bay</title><title>Journal of the American Water Resources Association</title><description>We measured annual discharges of water, sediments, and nutrients from 10 watersheds with differing proportions of agricultural lands in the Piedmont physiographic province of the Chesapeake Bay drainage. Flow-weighted mean concentrations of total N, nitrate, and dissolved silicate in watershed discharges were correlated with the proportion of cropland in the watershed. In contrast, concentrations of P species did not correlate with cropland. Organic P and C correlated with the concentration of suspended particles, which differed among watersheds. Thus, the ratio of N:P:Si in discharges differed greatly among watersheds, potentially affecting N, P or Si limitation of phytoplankton growth in the receiving waters. Simple regression models of N discharge versus the percentage of cropland suggest that croplands discharge 29-42 kg N ha-1 yr-1 and other lands discharge 1.2-5.8 kg N ha-1 yr-1. We estimated net anthropogenic input of N to croplands and other lands using county level data on agriculture and N deposition from the atmosphere. For most of the study watersheds, N discharge amounted to less than half of the net anthropogenic N</description><subject>agriculture</subject><subject>AGUA</subject><subject>ASPECTOS FISIOGRAFICOS</subject><subject>AZOTE</subject><subject>BASSIN VERSANT</subject><subject>Brackish</subject><subject>Chesapeake Bay</subject><subject>COASTAL PLAINS</subject><subject>COMPORTAMIENTO HUMANO</subject><subject>COMPORTEMENT HUMAIN</subject><subject>CORRELATION</subject><subject>CUENCAS HIDROGRAFICAS</subject><subject>DRAINAGE</subject><subject>DRENAJE</subject><subject>EAU</subject><subject>ELEMENT GEOMORPHOLOGIQUE</subject><subject>FARMLAND</subject><subject>FOSFORO</subject><subject>Freshwater</subject><subject>HUMAN ACTIVITY</subject><subject>HUMAN BEHAVIOUR</subject><subject>LLANURA COSTERA</subject><subject>Marine</subject><subject>MARYLAND</subject><subject>NITROGEN</subject><subject>NITROGENO</subject><subject>NONPOINT SOURCE POLLUTION</subject><subject>NUTRIENTES</subject><subject>NUTRIENTS</subject><subject>PENNSYLVANIA</subject><subject>PENNSYLVANIE</subject><subject>PHOSPHORE</subject><subject>PHOSPHORUS</subject><subject>PHYSIOGRAPHIC FEATURES</subject><subject>PLAINE COTIERE</subject><subject>POLLUTION</subject><subject>POLUCION</subject><subject>SEDIMENT</subject><subject>SEDIMENTO</subject><subject>SILICATE</subject><subject>SILICATES</subject><subject>SILICATOS</subject><subject>SUBSTANCE NUTRITIVE</subject><subject>TERRE AGRICOLE</subject><subject>TIERRAS AGRICOLAS</subject><subject>WATER</subject><subject>water quality</subject><subject>WATERSHEDS</subject><issn>1093-474X</issn><issn>1752-1688</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><recordid>eNo9kNFLwzAQxoMoOKd_glB88K01adImfdShUxxT1OHwJaTtZeu2NjVpcfvvjU68l--O-3Hf8SF0QXBEfF2tIsKTOCSpEBHJMh51OaYJFdH2AA3-V4e-xxkNGWfzY3Ti3ApjkhBBB-hlaprWVE0XONPbAoKycsVS2QW4wOig6TtbQdO5QFtTB88VlLXx8JfqwLollL_UaAlOtaDWENyo3Sk60mrj4OxPh2h2d_s2ug8nT-OH0fUk1DFjXciYYFooUWqSpKko_VQCUJwXrEg5pTGNC8ow5yyFPANeiJSKPNZaiJiJTNMhutzfba357MF1sva_w2ajGjC9kyTJBMsY92C4ByvXwVa2tqqV3Ull19Ib8US-T8fy0ac2ZfMPOfH8-Z7Xyki1sJWTs9efdHHCcZrSb-9Jbj8</recordid><startdate>19970601</startdate><enddate>19970601</enddate><creator>Jordan, T.E. (Smithsonian Environmental Research Center, Edgewater, MD.)</creator><creator>Correll, D.L</creator><creator>Weller, D.E</creator><general>Blackwell Publishing Ltd</general><scope>FBQ</scope><scope>BSCLL</scope><scope>7TN</scope><scope>7TV</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope></search><sort><creationdate>19970601</creationdate><title>Nonpoint source discharges of nutrients from Piedmont watersheds of Chesapeake Bay</title><author>Jordan, T.E. (Smithsonian Environmental Research Center, Edgewater, MD.) ; Correll, D.L ; Weller, D.E</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-f244t-4484f8a8df15668d84fdee30bc4c6733232c3407746eb9e7c8638b2ff882489f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>agriculture</topic><topic>AGUA</topic><topic>ASPECTOS FISIOGRAFICOS</topic><topic>AZOTE</topic><topic>BASSIN VERSANT</topic><topic>Brackish</topic><topic>Chesapeake Bay</topic><topic>COASTAL PLAINS</topic><topic>COMPORTAMIENTO HUMANO</topic><topic>COMPORTEMENT HUMAIN</topic><topic>CORRELATION</topic><topic>CUENCAS HIDROGRAFICAS</topic><topic>DRAINAGE</topic><topic>DRENAJE</topic><topic>EAU</topic><topic>ELEMENT GEOMORPHOLOGIQUE</topic><topic>FARMLAND</topic><topic>FOSFORO</topic><topic>Freshwater</topic><topic>HUMAN ACTIVITY</topic><topic>HUMAN BEHAVIOUR</topic><topic>LLANURA COSTERA</topic><topic>Marine</topic><topic>MARYLAND</topic><topic>NITROGEN</topic><topic>NITROGENO</topic><topic>NONPOINT SOURCE POLLUTION</topic><topic>NUTRIENTES</topic><topic>NUTRIENTS</topic><topic>PENNSYLVANIA</topic><topic>PENNSYLVANIE</topic><topic>PHOSPHORE</topic><topic>PHOSPHORUS</topic><topic>PHYSIOGRAPHIC FEATURES</topic><topic>PLAINE COTIERE</topic><topic>POLLUTION</topic><topic>POLUCION</topic><topic>SEDIMENT</topic><topic>SEDIMENTO</topic><topic>SILICATE</topic><topic>SILICATES</topic><topic>SILICATOS</topic><topic>SUBSTANCE NUTRITIVE</topic><topic>TERRE AGRICOLE</topic><topic>TIERRAS AGRICOLAS</topic><topic>WATER</topic><topic>water quality</topic><topic>WATERSHEDS</topic><toplevel>online_resources</toplevel><creatorcontrib>Jordan, T.E. (Smithsonian Environmental Research Center, Edgewater, MD.)</creatorcontrib><creatorcontrib>Correll, D.L</creatorcontrib><creatorcontrib>Weller, D.E</creatorcontrib><collection>AGRIS</collection><collection>Istex</collection><collection>Oceanic 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><jtitle>Journal of the American Water Resources Association</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Jordan, T.E. (Smithsonian Environmental Research Center, Edgewater, MD.)</au><au>Correll, D.L</au><au>Weller, D.E</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Nonpoint source discharges of nutrients from Piedmont watersheds of Chesapeake Bay</atitle><jtitle>Journal of the American Water Resources Association</jtitle><date>1997-06-01</date><risdate>1997</risdate><volume>33</volume><issue>3</issue><spage>631</spage><epage>645</epage><pages>631-645</pages><issn>1093-474X</issn><eissn>1752-1688</eissn><abstract>We measured annual discharges of water, sediments, and nutrients from 10 watersheds with differing proportions of agricultural lands in the Piedmont physiographic province of the Chesapeake Bay drainage. Flow-weighted mean concentrations of total N, nitrate, and dissolved silicate in watershed discharges were correlated with the proportion of cropland in the watershed. In contrast, concentrations of P species did not correlate with cropland. Organic P and C correlated with the concentration of suspended particles, which differed among watersheds. Thus, the ratio of N:P:Si in discharges differed greatly among watersheds, potentially affecting N, P or Si limitation of phytoplankton growth in the receiving waters. Simple regression models of N discharge versus the percentage of cropland suggest that croplands discharge 29-42 kg N ha-1 yr-1 and other lands discharge 1.2-5.8 kg N ha-1 yr-1. We estimated net anthropogenic input of N to croplands and other lands using county level data on agriculture and N deposition from the atmosphere. For most of the study watersheds, N discharge amounted to less than half of the net anthropogenic N</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/j.1752-1688.1997.tb03538.x</doi><tpages>15</tpages></addata></record> |
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| identifier | ISSN: 1093-474X |
| ispartof | Journal of the American Water Resources Association, 1997-06, Vol.33 (3), p.631-645 |
| issn | 1093-474X 1752-1688 |
| language | eng |
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| source | Wiley-Blackwell Read & Publish Collection |
| subjects | agriculture AGUA ASPECTOS FISIOGRAFICOS AZOTE BASSIN VERSANT Brackish Chesapeake Bay COASTAL PLAINS COMPORTAMIENTO HUMANO COMPORTEMENT HUMAIN CORRELATION CUENCAS HIDROGRAFICAS DRAINAGE DRENAJE EAU ELEMENT GEOMORPHOLOGIQUE FARMLAND FOSFORO Freshwater HUMAN ACTIVITY HUMAN BEHAVIOUR LLANURA COSTERA Marine MARYLAND NITROGEN NITROGENO NONPOINT SOURCE POLLUTION NUTRIENTES NUTRIENTS PENNSYLVANIA PENNSYLVANIE PHOSPHORE PHOSPHORUS PHYSIOGRAPHIC FEATURES PLAINE COTIERE POLLUTION POLUCION SEDIMENT SEDIMENTO SILICATE SILICATES SILICATOS SUBSTANCE NUTRITIVE TERRE AGRICOLE TIERRAS AGRICOLAS WATER water quality WATERSHEDS |
| title | Nonpoint source discharges of nutrients from Piedmont watersheds of Chesapeake Bay |
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