Item talk:Q312803

{

 "USGS Publications Warehouse": {
   "@context": "https://schema.org",
   "@type": "Article",
   "additionalType": "Journal Article",
   "name": "Use of regression\u2010based models to map sensitivity of aquatic resources to atmospheric deposition in Yosemite National Park, USA",
   "identifier": [
     {
       "@type": "PropertyValue",
       "propertyID": "USGS Publications Warehouse IndexID",
       "value": "70003371",
       "url": "https://pubs.usgs.gov/publication/70003371"
     },
     {
       "@type": "PropertyValue",
       "propertyID": "USGS Publications Warehouse Internal ID",
       "value": 70003371
     },
     {
       "@type": "PropertyValue",
       "propertyID": "DOI",
       "value": "10.1029/2009WR008316",
       "url": "https://doi.org/10.1029/2009WR008316"
     }
   ],
   "journal": {
     "@type": "Periodical",
     "name": "Water Resources Research",
     "volumeNumber": "46",
     "issueNumber": "9"
   },
   "inLanguage": "en",
   "isPartOf": [
     {
       "@type": "CreativeWorkSeries",
       "name": "Water Resources Research"
     }
   ],
   "datePublished": "2010",
   "dateModified": "2018-04-03",
   "abstract": "An abundance of exposed bedrock, sparse soil and vegetation, and fast hydrologic flushing rates make aquatic ecosystems in Yosemite National Park susceptible to nutrient enrichment and episodic acidification due to atmospheric deposition of nitrogen (N) and sulfur (S). In this study, multiple linear regression (MLR) models were created to estimate fall\u2010season nitrate and acid neutralizing capacity (ANC) in surface water in Yosemite wilderness. Input data included estimated winter N deposition, fall\u2010season surface\u2010water chemistry measurements at 52 sites, and basin characteristics derived from geographic information system layers of topography, geology, and vegetation. The MLR models accounted for 84% and 70% of the variance in surface\u2010water nitrate and ANC, respectively. Explanatory variables (and the sign of their coefficients) for nitrate included elevation (positive) and the abundance of neoglacial and talus deposits (positive), unvegetated terrain (positive), alluvium (negative), and riparian (negative) areas in the basins. Explanatory variables for ANC included basin area (positive) and the abundance of metamorphic rocks (positive), unvegetated terrain (negative), water (negative), and winter N deposition (negative) in the basins. The MLR equations were applied to 1407 stream reaches delineated in the National Hydrography Data Set for Yosemite, and maps of predicted surface\u2010water nitrate and ANC concentrations were created. Predicted surface\u2010water nitrate concentrations were highest in small, high\u2010elevation cirques, and concentrations declined downstream. Predicted ANC concentrations showed the opposite pattern, except in high\u2010elevation areas underlain by metamorphic rocks along the Sierran Crest, which had relatively high predicted ANC (>200\u00a0\u03bceq L\u22121). Maps were created to show where basin characteristics predispose aquatic resources to nutrient enrichment and acidification effects from N and S deposition. The maps can be used to help guide development of water\u2010quality programs designed to monitor and protect natural resources in national parks.",
   "description": "Article W09529; 14 p.",
   "publisher": {
     "@type": "Organization",
     "name": "American Geophysical Union"
   },
   "author": [
     {
       "@type": "Person",
       "name": "Clow, David W. dwclow@usgs.gov",
       "givenName": "David W.",
       "familyName": "Clow",
       "email": "dwclow@usgs.gov",
       "identifier": {
         "@type": "PropertyValue",
         "propertyID": "ORCID",
         "value": "0000-0001-6183-4824",
         "url": "https://orcid.org/0000-0001-6183-4824"
       },
       "affiliation": [
         {
           "@type": "Organization",
           "name": "Colorado Water Science Center",
           "url": "https://www.usgs.gov/centers/colorado-water-science-center"
         }
       ]
     },
     {
       "@type": "Person",
       "name": "Nanus, Leora",
       "givenName": "Leora",
       "familyName": "Nanus"
     },
     {
       "@type": "Person",
       "name": "Huggett, Brian",
       "givenName": "Brian",
       "familyName": "Huggett"
     }
   ],
   "funder": [
     {
       "@type": "Organization",
       "name": "Colorado Water Science Center",
       "url": "https://www.usgs.gov/centers/colorado-water-science-center"
     }
   ],
   "spatialCoverage": [
     {
       "@type": "Place",
       "additionalType": "country",
       "name": "United States",
       "url": "https://geonames.org/4074035"
     },
     {
       "@type": "Place",
       "additionalType": "unknown",
       "name": "Yosemite Nataional Park"
     }
   ]
 }

}