This dataset includes the laboratory analytical information for all samples collected as described in the "Methods.txt" file. For this project, we collected snow, soil, dust, wetland sediment, water, and tadpole tissue, according to the design described in “Methods.txt”. All laboratory methods may be viewed here:   https://www.uaa.alaska.edu/enri/labs/aset_lab/index.cfm Or more specifically, at the following links: ICP-MS: https://www.uaa.alaska.edu/enri/labs/aset_lab/Methods/aset-lab-methods-icp-ms-analysis.cfm Ion Chromatography: https://www.uaa.alaska.edu/enri/labs/aset_lab/Methods/aset-lab-methods-ion-chromatograph.cfm Carbon in Water: https://www.uaa.alaska.edu/enri/labs/aset_lab/Methods/methods-carbon-in-water.cfm Site---The wetland ID. This provides a join field with the “Site.csv” table. Date---The date on which the sample was collected. Media---The media sampled. File includes data from the following media: snow, soil, dust, wetland sediment, water, and tadpole tissue. DepthGroup---For water samples, whether water collected was at the surface ("shallow") or the bottom ("deep") of the wetland. NA means that depth grouping was not relevant to this sample type (e.g. tissue or dust). SampleType---Describes whether the sample was taken for different quality control reasons, including a duplicate sample (where two samples of the same type were taken in differnt containers in the field) or a split (where the lab took one sample taken in the field and divided it into two in the lab to test repeatability of laboratory procedures. See links above for further methods information and also the “Methods.txt” document for further information about field sampling design. Location---Some samples were taken on transects points starting from the edge of the road (see "Methods.txt" file). This column reports the distance in meters from the road toward the wetland (or on one side of it) where the sample was taken. Method---For water samples, describes the type of analysis that produced the result, including dissolved (filtered) or total (unfiltered) metals or anions or organic carbon. Analyte---We report data for the following elements, anions, and types of organic carbon that we measured. Abbreviation FullName Ag Silver Al Aluminum As Arsenic Ba Barium Be Beryllium Br Bromide Ca Calcium Cd Cadmium Cl Chloride Co Cobalt Cr Chromium Cu Copper DOC Dissolved Organic Carbon F Fluoride Fe Iron K Potassium Mg Magnesium Mn Manganese Mo Molybdenum Na Sodium Ni Nickel NO3 Nitrate NO2 Nitrite Pb Lead PO4 Phosphate Sb Antimony Se Selenium Si Silicon SO4 Sulfate Th Thorium Tl Thallium TOC Total Organic Carbon U Uranium V Vanadium Zn Zinc Value---The numerical value for the analyte in that row. If an analyte was reported as below the analytical limit of detection, then no value is given. Units---The units of measure for the analyte value. These are mg of the analyte per kg of the media (mg/kg) for solid media. All solid media samples are reported as mg/kg wet weight for tissue and dry weight for all other solid media (soil, dust, sediment). All water and snow elemental concentrations are given in micrograms of analyte per L of water (or melted snow). All anions measured in the laboratory are given in mg/L. Organic Carbon is given as mg/kg for solids or mg/L for liquids. belowLOD---This is a TRUE/FALSE field describing whether the analyte was below (TRUE) or above (FALSE) the limit of detection “LOD” LOD---The analytical limit of detection for that analyte in that sample. These varied by sample run or sometimes even by sample, when weights were low. Flag---TRUE describes whether concerns were rasied about the quality of the sample or lab analysis - FALSE means no concerns were raised, however dataset has not undergone rigorous QC due to budget cuts and has not been analyzed rigorously, at which point some errors become apparrent. Comment---Describes why the sample was flagged. CollectionID---The label assigned each sample in the field and a join field to the table, “AnalyticAttributes.csv”. Samples were given unique labels that did not reveal site name or other information, so that analyses were ”blind” by the lab. Questions????? Please contact Birgit Hagedorn (bhagedorn@uaa.alaska.edu), Margaret Perdue (margaret_perdue@fws.gov), or Mari Reeves (mari_reeves@fws.gov).