{"accessLevel": "public", "bureauCode": ["020:00"], "contactPoint": {"fn": "Jacqueline Brooks", "hasEmail": "mailto:brooks.reneej@epa.gov"}, "description": "Nitrogen stable isotope data and associated meta data from the 2007 National Lakes Assessment, and the 2008-2009 National Rivers and Streams Assessment.  The data also include site location, Nitrogen inventory information for the watershed, and nitrogen concentrations measured as part of NARS.  Other relevant NARS information for the sites are also included.  Updated 5/16/2025 to include NLA 2012 and NRSA 2013-2014 chironomid isotope data. \n\nThis dataset is associated with the following publication:\nBrooks, J.R., J. Compton, J. Lin, A. Herlihy, A. Nahlik, W. Rugh, and M. Weber. \u03b415N of Chironomidae: An index of nitrogen sources and processing within watersheds for national aquatic monitoring programs.   SCIENCE OF THE TOTAL ENVIRONMENT. Elsevier BV, AMSTERDAM,  NETHERLANDS, 813: 151867, (2022).", "distribution": [{"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1523163/NARS070809Chironomids-ScienceHub.xlsx", "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "title": "NARS070809Chironomids-ScienceHub.xlsx"}, {"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1523163/NLA2012_Chironomid_isotope_data-ScienceHub.xlsx", "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "title": "NLA2012_Chironomid_isotope_data-ScienceHub.xlsx"}, {"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1523163/NRSA1314Chironomids-ScienceHub-250516.xlsx", "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "title": "NRSA1314Chironomids-ScienceHub-250516.xlsx"}], "identifier": "https://doi.org/10.23719/1523163", "keyword": ["NARS", "stable isotopes", "Nitrogen and Co-pollutants", "EPA National Lake Assessment", "National Rivers and Streams Assessment"], "license": "https://pasteur.epa.gov/license/sciencehub-license.html", "modified": "2025-05-19", "programCode": ["020:000"], "publisher": {"name": "U.S. EPA Office of Research and Development (ORD)", "subOrganizationOf": {"name": "U.S. Environmental Protection Agency", "subOrganizationOf": {"name": "U.S. Government"}}}, "references": ["https://doi.org/10.1016/j.scitotenv.2021.151867", "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8865614"], "rights": null, "title": "Chironomid nitrogen stable isotope data for NARS 2007-2009, 2012-2014 surveys"}