Dissolved Pesticides in Weekly Water Samples from the NAWQA Regional Stream Quality Assessments (2013-2017)

Dissolved pesticides were measured in weekly water samples from 482 wadeable streams in five regions of the United States during 2013-2017, as part of the U.S. Geological Survey's (USGS) Regional Stream Quality Assessment (RSQA). One study was conducted each year, starting with the Midwest (2013), followed by the Southeast Piedmont (2014), Pacific Northwest (2015), Northeast (2016), and Central California Coast (2017). Within each region, 77-100 streams were sampled over 6-14 weeks, followed by ecological surveys of fish, invertebrate and fish communities. The first study (Midwest) is an agricultural-gradient study, where the majority of sites were located along a gradient from undeveloped to 100% agricultural land...

Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alabama, California, Central California Foothills ecoregion, Coastal Mountains ecoregion, Connecticut, All tags... Corn Belt, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Massachusetts, Midwest, Minnesota, Missouri, NAWQA, National Water Quality Assessment, Nebraska, New Hampshire, New York, North Carolina, Northeast, Ohio, Pacific Northwest, Pennsylvania, Piedmont ecoregion, Puget lowlands ecoregion, Rhode Island, South Carolina, South Dakota, Southeast, Tennessee, USGS Science Data Catalog (SDC), United States, Vermont, Virginia, Water Quality, Water Resources, Willamette Valley, Wisconsin, fungicide, herbicide, insecticide, mixtures, pesticide, pesticide degradate, southern Appalachian Mountains, stream, surface water, surface water, water quality, Fewer tags

Pesticides in Daily and Weekly Water Samples from the NAWQA Midwest and Southeast Stream Quality Assessments (2013-2014)

These datasets are one component of the multistressor studies conducted in Midwest streams in 2013 (MSQA) and in Southeast streams in 2014 (SESQA) by the U.S. Geological Survey National Water Quality Assessment Project. High-frequency small-volume autosamplers were deployed at 7 sites each in MSQA and SESQA that collected daily and weekly composite water samples, which were analyzed for 225 pesticides and pesticide degradates. Five of the MSQA autosampler sites were in agricultural watersheds and two in urban watersheds, whereas all seven SESQA autosampler sites were in urban watersheds. The daily and weekly composite samples were compared with results from traditional discrete water samples collected weekly at...

Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alabama, Corn Belt, Georgia, Illinois, Indiana, All tags... Iowa, Kansas, Kentucky, Minnesota, Missouri, NAWQA, National Water Quality Assessment, Nebraska, North Carolina, Ohio, Piedmont ecoregion, South Carolina, South Dakota, Tennessee, USGS Science Data Catalog (SDC), United States, Virginia, Water Quality, Water Resources, Wisconsin, daily sampling, fungicide, herbicide, insecticide, mixtures, pesticide, pesticide degradate, southern Appalachian Mountains, stream, surface water, surface water, water quality, Fewer tags

Concentrations of Pesticides, Pharmaceuticals, Organic Waste Indicators, and Volatile Organic Chemical Contaminants and Their Predicted Effects Potential in Wadeable Southeastern USA Streams

This dataset presents the results of 475 unique organic compounds collected from 54 wadeable streams within the Southeastern, USA, collected within 10 weeks during 2014. Maximum and median exposure conditions were evaluated in relation to watershed characteristics and for potential biological effects. This dataset contains the summary statistics (maximum and median concentrations)of detected compounds, as well as a summary of quality-assurance (blanks and replicates) samples. Also included are the statistical summaries as related to analyte specific contaminant detection/concentration data and site-specific land-use matrices, spearman-rank correlations, and ToxCast evaluations.

Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquatic Biology, Ecology, Piedmont ecoregion, Southeastern USA, USGS Science Data Catalog (SDC), All tags... Water Quality, Water Resources, aquatic health, biota, computational toxicology, mixed contaminants, surface water, target analysis, wadeable streams, wastewater contamination, Fewer tags

Estimating Carbon Sequestration in the Piedmont Ecoregion of the United States from 1971 to 2010

Human activities have diverse and profound impacts on ecosystem carbon cycles. The Piedmont ecoregion in the eastern United States has undergone significant land use and land cover change in the past few decades. The purpose of this study was to use newly available land use and land cover change data to quantify carbon changes within the ecoregion. Land use and land cover change data (60-m spatial resolution) derived from sequential remotely sensed Landsat imagery were used to generate 960-m resolution land cover change maps for the Piedmont ecoregion. These maps were used in the Integrated Biosphere Simulator (IBIS) to simulate ecosystem carbon stock and flux changes from 1971 to 2010. Results: Results show that...

Categories: Publication; Types: Journal Citation; Tags: Carbon flux, IBIS, Land use and Land cover, Piedmont Ecoregion