Silver nanoparticles (AgNP) are one type of contaminant that can enter treatment wetlands (Wiesner 2006) and impact the overall treatment efficacy. Grazing by filter feeding zooplankton, such as Daphnia magna, is critical to treatment wetland functioning (Ismail 2019), but the effects of AgNP on zooplankton are not fully understood, especially at environmentally relevant concentrations. In this study, the bioaccumulation kinetics of dissolved and nanoparticulate Ag in D. magna exposed to environmentally relevant Ag concentrations were characterized using isotopically labelled Ag as a tracer. References: Wiesner MR, Lowry GV, Alvarez P, Dionysiou D, Biswas P. 2006. Assessing the Risks of Manufactured Nanomaterials. Environmental Science & Technology 40:4336-4345. Ismail NS, Blokker BM, Feeney TR, Kohn RH, Liu J, Nelson VE, Ollive MC, Price SBL, Underdah EJ. 2019. Impact of Metazooplankton Filter Feeding on Escherichia coli under Variable Environmental Conditions. Applied and Environmental Microbiology 85: e02006-02019.

This data package was created 2025-12-03 08:20:34 by NPSTORET and includes selected project, location, and result data. Data are from Ernest A. Matson's (University of Guam's Marine Laboratory) 1990 Technical Report (#93) entitled "Effects of the Agat, Agana, and Northern District Wastewater Effluents on Receiving Water Quality (Chemistry and Bacteriology) and the Effects of the Agat Effluent on Success of Sea Urchin Egg Fertilization". Data contained in WAPA_NPSTORET_BE.ACCDB (NPSTORET back-end file) were filtered to include: Organization: - WAPA: War in the Pacific National Historical Park Project: - WAPA0009: Effects of the Agat and Agana Wastewater Effluents on Receiving Water Quality Station: - Include Trip QC And All Station Visit Results Value Status: - Accepted or Certified (exported as Final) or Final The data package is organized into five data tables: - Projects.csv - describes the purpose and background of the monitoring efforts - Locations.csv - documents the attributes of the monitoring locations/stations - Results.csv - contains the field measurements, observations, and/or lab analyses for each sample/event/data grouping - HUC.csv - enumerates the domain of allowed values for 8-digit and 12-digit hydrologic unit codes utilized by the Locations data table - Characteristics.csv - enumerates the domain of characteristics available in NPSTORET to identify what was sampled, measured or observed in Results Period of record for filtered data is 1989-02-09 to 1989-12-12. This data package is a snapshot in time of one National Park Service project. The most current data for this project, which may be more or less extensive than that in this data package, can be found on the Water Quality Portal at: https://www.waterqualitydata.us/data/Result/search?project=WAPA0009&mimeType=csv&zip=yes&dataProfile=biological&providers=STORET

The dataset reports biological endpoints (survival, growth, developmental stage, and body burden of selected metals) for larval spadefoot toads (Spea multiplicata) in laboratory-based exposures to 1) field-collected water or sediment from a containment pond at the Pinyon Plain Mine in Arizona, USA, during its pre-production phase and 2) six concentrations of copper or cobalt in water-only bioassays. Also reported are data on water quality and the concentration of metals in the test media during the assays.