Filters: Tags: Biogeochemistry (X) > partyWithName: U.S. Geological Survey - ScienceBase (X) > Types: OGC WMS Layer (X)

Filters Date Range Past year (1) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Map Service (3) OGC WFS Layer (3) OGC WMS Service (3) Contacts U.S. Geological Survey Elizabeth B Stumpner Katrina N Napora California Water Science Center Water Resources More... Categories Data (3) Tag Types Theme (3) USGS Scientific Topic Keyword (2) Place (2) Harvest Set (3) Subject (1) Tag Schemes None (2) USGS Thesaurus (2) English (1) Clark Fork Basin (1) ISO 19115 Topic Category (2) Common geographic areas (1) View Results as: JSON ATOM CSV

Biomass accrual and trace-element concentrations in water and periphytic algae at select locations in the Clark Fork and Blackfoot Rivers, Montana, 2015 The U.S. Geological Survey monitored algal biomass accrual and concentrations of metals and other trace elements in stream water and periphytic algae at 3-4 day intervals over a 2-week period at 3 locations within the upper and middle portions of the mining-impacted Clark Fork River, Montana, and at one location on the relatively unimpacted Blackfoot River tributary. This data release makes available trends in major and minor trace element concentrations in surface water and periphytic algae, and corresponding trends in concentrations of autotrophic (chlorophyll a) and heterotrophic (ash-free dry mass) algal biomass collected in late July and early August 2015. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquatic Biology, Black Foot River, Botany, Clark Fork River, Ecology, All tags... Environmental Health, Galen Gage, Hydrology, Land Use Change, Limnology, Mineral Resources, Montana, Sedimentology, Turah, USGS Science Data Catalog (SDC), Water Quality, Water Resources, Wildlife Biology, algae, bioaccumulation, biogeochemistry, periphyton, trace-element, water quality, Fewer tags Data of floodplain soil carbon and nutrient retention along a chronosequence of urban stream restorations in Northern Virginia (2022) Floodplain surficial soil samples (10 cm depth) were collected from 18 streams in the urbanized Piedmont region of northern Virginia, representing a chronosequence of time (1-10 yrs.) since stream restoration as well as unrestored and reference streams. The samples were analyzed for total carbon (TC), total nitrogen (TN) and total phosphorus (TP) storage, whereas CO2 mineralization potential and equilibrium phosphorus concentration (EPC0) were measured as metrics of nutrient and carbon loss. Samples also were analyzed for soil moisture, pH, particle size, organic matter content, and degree of phosphorus saturation. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chronosequence, Stream-floodplain restoration, USGS Science Data Catalog (SDC), best management practice, biogeochemistry, All tags... carbon, equilibrium phosphorus concentration (EPC0), geoscientificInformation, none, nutrient management, Fewer tags Assessment of water-quality in the California Sacramento-San Joaquin Delta during a North Delta directed flow action: August - October 2018 (ver. 2.0, September 2021) This data release documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the North Delta in the Sacramento-San Joaquin River Delta of California, USA. The data set includes nitrate, ammonium, phosphate, dissolved organic carbon, temperature, conductivity, dissolved oxygen, turbidity, and chlorophyll . Data-collection cruises were conducted under three different environmental/flow conditions in August, September, and October 2018 that coincided with conditions prior to, during, and following a directed flow action or pulse of agricultural return water organized by the California Department of Water Resources and California Natural Resources Agency... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, Central Valley, Directed Flow Action, Liberty Island, Sacramento River, All tags... Sacramento-San Joaquin Delta, USGS Science Data Catalog (SDC), United States, biogeochemistry, biota, delta, drinking water use, environment, high frequency, high-resolution, hydrogeology, inlandWaters, nutrient content (water), nutrients, phytoplankton, public supply water use, real-time, statistical analysis, visualization methods, water quality, water quality, Fewer tags