Item talk:Q229853

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 "additionalType": "Research",
 "url": "https://www.usgs.gov/centers/chesapeake-bay-activities/science/high-frequency-nitrate-concentration-data",
 "headline": "High-frequency nitrate-concentration data",
 "datePublished": "August 25, 2016",
 "author": [
   {
     "@type": "Person",
     "name": "Matthew Miller",
     "url": "https://www.usgs.gov/staff-profiles/matthew-miller",
     "identifier": {
       "@type": "PropertyValue",
       "propertyID": "orcid",
       "value": "0000-0002-2537-1823"
     }
   }
 ],
 "description": [
   {
     "@type": "TextObject",
     "text": "\u00ab Return to Chesapeake Bay Activities \u2014 Home"
   },
   {
     "@type": "TextObject",
     "text": "Contact Matthew Miller at mamiller@usgs.gov."
   },
   {
     "@type": "TextObject",
     "text": "Implications for ecosystem management include:"
   },
   {
     "@type": "TextObject",
     "text": "High-frequency nitrate-concentration data can be used to inform the development of best management practices to reduce nitrogen loading to Chesapeake Bay. Although nitrogen loads entering Chesapeake Bay have decreased in recent decades, they exceed levels that are compatible with a healthy ecosystem as a result of urbanization, agriculture, and other human activities in the bay watershed, and further reductions are needed. The transport of excessive amounts of nitrate (the most commonly occurring form of nitrogen in most streams and rivers) and other nutrients through streamflow and groundwater discharge can cause eutrophication and other adverse physical, chemical, biological, and economic consequences to the bay\u2019s sensitive aquatic ecosystem. Mitigating these effects requires information not only about total loads, but also about time-varying sources of nitrate to streams and in-stream retention of nitrate. This information is difficult to obtain with traditional field-based study methods."
   },
   {
     "@type": "TextObject",
     "text": "Sources of information"
   },
   {
     "@type": "TextObject",
     "text": "The findings in this Science Summary are reported in the article below, which should be used as the reference for this information:"
   },
   {
     "@type": "TextObject",
     "text": "Results of new USGS research"
   },
   {
     "@type": "TextObject",
     "text": "Although nitrogen loads entering Chesapeake Bay have decreased in recent decades, they exceed levels that are compatible with a healthy ecosystem as a result of urbanization, agriculture, and other human activities in the bay watershed, and further reductions are needed. The transport of excessive amounts of nitrate (the most commonly occurring form of nitrogen in most streams and rivers) and other nutrients through streamflow and groundwater discharge can cause eutrophication and other adverse physical, chemical, biological, and economic consequences to the bay\u2019s sensitive aquatic ecosystem. Mitigating these effects requires information not only about total loads, but also about time-varying sources of nitrate to streams and in-stream retention of nitrate. This information is difficult to obtain with traditional field-based study methods. Results of a new USGS study show that collection and interpretation of high-frequency nitrate-concentration data from streams in the bay watershed (fig. 1) can be used to quantify time-varying sources and in-stream retention of nitrate which, in turn, can inform the development of best management practices to reduce nitrate input to the bay."
   },
   {
     "@type": "TextObject",
     "text": "Figure 1. Location of U.S. Geological Survey streamgages in the Potomac River, Smith Creek, and Difficult Run Basins in the Chesapeake Bay watershed."
   },
   {
     "@type": "TextObject",
     "text": "For more information about this science summary:"
   },
   {
     "@type": "TextObject",
     "text": "Results of new USGS research published in the journal \u201cWater Resources Research\u201d (Miller and others, 2016) show that:"
   },
   {
     "@type": "TextObject",
     "text": "Miller, M.P., Tesoriero, A.J., Capel, P.D., Pellerin, B.A., Hyer, K.E., and Burns, D.A., 2016, Quantifying watershed-scale groundwater loading and in-stream fate of nitrate using high-frequency water quality data: Water Resources Research, v. 52, no. 1, p. 330-347, doi:10.1002/2015WR017753, accessed May 4, 2016, at http://onlinelibrary.wiley.com/doi/10.1002/2015WR017753/full."
   }
 ],
 "funder": {
   "@type": "Organization",
   "name": "Chesapeake Bay Activities",
   "url": "https://www.usgs.gov/centers/chesapeake-bay-activities"
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