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Filters Date Range Past year (6) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) OGC WMS Service (1) Contacts U.S. Geological Survey U.S. Geological Survey - ScienceBase PCMSC Science Data Coordinator Sally House Jennifer A Curtis More... Categories Data (8) Tag Types Theme (59) Tags (with Scheme=USGS Thesaurus) effects of climate change (3) sea-floor characteristics (3) bathymetry (2) bathymetry measurement (2) bulk density (2) carbon (2) carbon storage (2) More... View Results as: JSON ATOM CSV

Vegetation biomass and density from three locations in the Sacramento-San Joaquin Delta, California, 2017 to 2018 Vegetation type and density data were collected by the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center at three locations in the Sacramento-San Joaquin Delta. Data were collected in Lindsey Slough in April 2017, and Middle River and the Mokelumne River in March 2018. Vegetation samples were collected by divers, and used to determine dry biomass density. These data were collected as part of a cooperative project, with the USGS California Water Science Center and the California Department of Fish and Wildlife, on the effects of invasive aquatic vegetation on sediment transport in the Sacramento-San Joaquin Delta. Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Invasive Species, Lindsey Slough, Marsh, All tags... Middle River, Mokelumne River, PCMSC, Pacific Coastal and Marine Science Center, Sacramento-San Joaquin Delta, Sedimentation, State of California, Substrate, U.S. Geological Survey, USGS, aquatic ecosystems, botany, inland waters, invasive species, plant testing, plot sampling, specimen collecting, Fewer tags Projected future habitat of coastal wetlands in the Nisqually River Delta, Washington This dataset consists of raster geotiff outputs from modeling vertical accretion and carbon accumulation in the Nisqually River Delta, Washington, USA. These rasters represent projections of future habitat type, change in surface elevation above Mean Sea Level, and total sediment carbon accumulation since 2011 in coastal wetland habitats. Projections were generated in 20-year increments for 100 years for five amounts of sea-level rise, three amounts of suspended sediment concentrations, and two alternative configurations of the U.S. Interstate-5 causeway as it crosses the Nisqually River to either prevent or allow inland habitat migration (a total of 30 scenarios). The full methods and results are described in detail... Tags: Brackish Marsh, Emergent Tidal Wetland, Estuarine Coastal, Freshwater Tidal Marsh, High Salt Marsh, All tags... Low and Intermediate Salt Marsh, NWCASC, Nisqually, Northwest Climate Adaptation Science Center, Pierce, Thurston, Tidal Forest/Woodland, U.S. Geological Survey, USGS, Vegetated Tidal Flats, WGSC, Washington, Washington, Western Geographic Science Center, effects of climate change, Fewer tags Salt marsh monitoring during water years 2013 to 2019, Humboldt Bay, CA – water levels, surface deposition, elevation change, and carbon storage This data release includes monitoring data collected by the U.S. Geological Survey (USGS) Humboldt Bay Water Quality and Salt Marsh Monitoring Project. The datasets include continuous water levels collected at a 6-minute timestep collected in two study marshes (Mad River and Hookton). Surface deposition, elevation changes and carbon storage (in marsh edge environments) measured in five USGS study marshes (Mad River, Manila, Jacoby, White and Hookton). The monitoring data presented in this data release represent fundamental datasets needed to manage blue carbon stocks, assess marsh vulnerability, inform SLR adaptation planning, and build coastal resiliency to climate change in Humboldt Bay, CA Additional documentaton... Tags: California, Ecology, Hookton Slough, Hookton marsh, Humboldt Bay, All tags... Humboldt County, Jacoby marsh, Mad River Slough, Mad River marsh, Manila marsh, SET MH, Sedimentology, USGS Science Data Catalog (SDC), White Slough, White marsh, blue carbon, carbon storage, elevation change, estuarine processes, feldspar marker horizon, inundation, marsh accretion, marsh ecosystems, salt marsh, surface deposition, surface elevation table, Fewer tags Suspended particle size distribution data from three locations in the Sacramento-San Joaquin Delta, California, 2017 to 2018 These data present suspended particle size distributions collected by the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center at three locations in the Sacramento-San Joaquin Delta. Data were collected in Lindsey Slough on April 4 and April 18, 2017, and near the mouth of the Mokelumne River and in Middle River on March 14, 2018 by deploying a Sequoia Scientific Laser In-situ Scattering and Transmissometry instrument (LISST 100x) from a small vessel during the deployment of the hydrographic time series data instruments. At each site, data were collected 1 to 2 times, generally near the water surface, at mid depth, and near the sediment bed. These data were collected as part of a study on the... Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Invasive Species, Lindsey Slough, Middle River, All tags... Mokelumne River, PCMSC, Pacific Coastal and Marine Science Center, Sacramento-San Joaquin Delta, Sediment transport, Shallow-water habitat, State of California, Suspended-sediment concentration, Tidal shallows, U.S. Geological Survey, USGS, aquatic ecosystems, field observation, geoscientificInformation, marine water quality, physical oceanography, seabed, suspended material (water), water level measurements, wave observations, Fewer tags Molokaʻi, Hawai'i vegetation structure and plant species composition of coastal wetland sites 2022 In this project, we assessed the potential for twelve coastal wetland sites on the island of Molokaʻi, Hawaiʻi, to provide socio-cultural resources and habitat for flora and fauna following restoration. In April 2022, a rapid field assessment of hydrology, soils, and vegetation was carried out at each of the wetland sites. In this data release, all the vegetation data collected during the rapid field assessment are provided. The vegetation datasets consist of three spreadsheets found in the "Attached Files" section. Each dataset has its own description. Categories: Data; Tags: Molokai, biota, vegetation Analysis of Polyphenols in Water Primrose (Ludwigia hexapetala) Plants from the Sacramento-San Joaquin Delta of California Water primrose (Ludwigia hexapetala) is an invasive aquatic plant that has rapidly increased in coverage throughout the Sacramento-San Joaquin Delta. Water primrose has invaded wetlands and may contribute towards mortality of tules (Schoenoplectus spp.) and cattails (Typha spp.). Little research has been completed on the mechanisms responsible for marsh loss, but previous studies have suggested that water primrose contains allelopathic chemicals that could cause plant mortality. Three major allelopathic polyphenols (myricitrin, prunin, and quercitrin) previously identified in L. hexapetala leaves were measured in leaf, water, and soil samples from Delta marshes infested with water primrose. Samples were collected... Categories: Data; Tags: Big Break, Ecology, Environmental Health, Latham Slough, Liberty Island, All tags... North America, Rhode Island, Sacramento-San Joaquin Delta, San Joaquin Delta, Sherman Lake, USGS Science Data Catalog (SDC), Venice Cut, Water Quality, ecological competition, environment, invasive species, liquid chromatography, mass spectroscopy, water quality, Fewer tags Projected future elevation change of coastal wetlands in the Nisqually River Delta, Washington This dataset consists of raster geotiff outputs from modeling vertical accretion and carbon accumulation in the Nisqually River Delta, Washington, USA. These rasters represent projections of future habitat type, change in surface elevation above Mean Sea Level, and total sediment carbon accumulation since 2011 in coastal wetland habitats. Projections were generated in 20-year increments for 100 years for five amounts of sea-level rise, three amounts of suspended sediment concentrations, and two alternative configurations of the U.S. Interstate-5 causeway as it crosses the Nisqually River to either prevent or allow inland habitat migration (a total of 30 scenarios). The full methods and results are described in detail... Tags: Brackish Marsh, Emergent Tidal Wetland, Estuarine Coastal, Freshwater Tidal Marsh, High Salt Marsh, All tags... Low and Intermediate Salt Marsh, NWCASC, Nisqually, Northwest Climate Adaptation Science Center, Pierce, Thurston, Tidal Forest/Woodland, U.S. Geological Survey, USGS, Vegetated Tidal Flats, WGSC, Washington, Washington, Western Geographic Science Center, effects of climate change, Fewer tags Acoustic-backscatter data from three locations in the Sacramento-San Joaquin Delta, California, 2017 to 2018 This part of the data release contains high-resolution acoustic-backscatter data collected by the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center at three study locations in the Sacramento-San Joaquin Delta, California. Data were collected in Lindsey Slough in April 2017, Middle River in March 2018, and Mokelumne River in March 2018, using an interferometric bathymetric sidescan sonar systems mounted to the USGS R/V Parke Snavely. Data are provided in 1-m resolution GeoTIFF formats. These data were collected as part of a study of the effects of invasive aquatic vegetation on sediment transport in the Sacramento-San Joaquin Delta. Tags: Bathymetry, Bathymetry and Elevation, CMHRP, Coastal and Marine Hazards and Resources Program, Invasive Species, All tags... Lindsey Slough, Middle River, Mokelumne River, PCMSC, Pacific Coastal and Marine Science Center, Sacramento-San Joaquin Delta, Seafloor Topography, State of California, U.S. Geological Survey, USGS, bathymetry, bathymetry measurement, field observation, geoscientificInformation, geospatial datasets, marine geophysics, multibeam sonar, sea-floor characteristics, seabed, Fewer tags Hydrodynamic time-series data from three locations in the Sacramento-San Joaquin Delta, California, 2017 to 2018 Hydrodynamic and sediment transport time-series data, including water depth, velocity, turbidity, conductivity, and temperature, were collected by the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center at three locations in the Sacramento-San Joaquin Delta. Data were collected in Lindsey Slough in April 2017, and Middle River and the Mokelumne River in March 2018. Data files are grouped by location. At each of the three sites, data were collected at stations outside and within patches of vegetation, to determine how submerged invasive vegetation influences tidal currents and suspended-sediment concentration. The Table below shows the data types collected at each station, and classifies stations... Categories: Data; Tags: CMHRP, CTD, CTD measurement, Coastal and Marine Hazards and Resources Program, Conductivity, All tags... Currents, Invasive Species, Lindsey Slough, Middle River, Mokelumne River, PCMSC, Pacific Coastal and Marine Science Center, Pressure sensors, Sacramento-San Joaquin Delta, Salinity, Sediment transport, Shallow-water habitat, State of California, Suspended-sediment concentration, Tidal height, Tidal shallows, Turbidity, U.S. Geological Survey, USGS, Water depth, Water pressure, Water temperature, Wave height gauges, aquatic ecosystems, field observation, geoscientificInformation, marine water quality, physical oceanography, seabed, suspended material (water), time series datasets, water level measurements, wave observations, Fewer tags Projected future carbon accumulation of coastal wetlands in the Nisqually River Delta, Washington This dataset consists of raster geotiff outputs from modeling vertical accretion and carbon accumulation in the Nisqually River Delta, Washington, USA. These rasters represent projections of future habitat type, change in surface elevation above Mean Sea Level, and total sediment carbon accumulation since 2011 in coastal wetland habitats. Projections were generated in 20-year increments for 100 years for five amounts of sea-level rise, three amounts of suspended sediment concentrations, and two alternative configurations of the U.S. Interstate-5 causeway as it crosses the Nisqually River to either prevent or allow inland habitat migration (a total of 30 scenarios). The full methods and results are described in detail... Tags: Brackish Marsh, Emergent Tidal Wetland, Estuarine Coastal, Freshwater Tidal Marsh, High Salt Marsh, All tags... Low and Intermediate Salt Marsh, NWCASC, Nisqually, Northwest Climate Adaptation Science Center, Pierce, Thurston, Tidal Forest/Woodland, U.S. Geological Survey, USGS, Vegetated Tidal Flats, WGSC, Washington, Washington, Western Geographic Science Center, effects of climate change, Fewer tags Carbon storage in the edge environments of five salt marshes, Humboldt Bay, CA, 2018 Blue carbon storage in coastal vegetated habitats is an important component of the global carbon cycle. In 2018, shallow sediment cores were collected in five USGS study marshes located in Humboldt Bay, CA. The cores were collected within 2 m of the marsh edge to characterize carbon storage in areas susceptible to marsh edge erosion Two sediment cores were collected in each of the five study marshes (Mad River, Manila, Jacoby, White, Hookton) using an Ejkelkamp peat sampler (52 mm diameter). The sampler was pounded in the sediments with a heavy plastic mallet. This method produces little to no compaction because once inserted, the corer is rotated 180°, and a sample is collected adjacent to where it was driven into... Categories: Data; Tags: California, Hookton marsh, Humboldt Bay, Humboldt County, Jacoby marsh, All tags... Mad River marsh, Manila marsh, White marsh, biota, blue carbon, bulk density, carbon storage, estuarine processes, marsh ecosystems, salt marsh, Fewer tags Moloka'i, Hawai'i rapid assessment of hydrology, soils, and vegetation in coastal wetlands 2022 In this project, we assessed the potential for twelve coastal wetland sites on the island of Molokaʻi, Hawaiʻi, to provide socio-cultural resources and habitat for flora and fauna following restoration. In April 2022, a rapid field assessment of hydrology, soils, and vegetation was carried out at each of the wetland sites. The data provided here were collected in order to inform a prioritization protocol for ranking wetlands on Molokaʻi for restoration. Soil samples were collected at each of the sites at three different depth ranges (0-2, 24-26, and 48-50 cm). Samples from 0-2 cm and 24-26 cm were analyzed for % organic carbon and soil texture. These two measures provide a basic understanding of the status of coastal... Tags: Ecology, Molokai, Soil Sciences, USGS Science Data Catalog (SDC), biota, All tags... groundwater, hydrology, natural resource management, soil chemistry, vegetation, wetlands, Fewer tags Grain size, bulk density, and organic carbon of sediment cores from three locations in the Sacramento-San Joaquin Delta, California, 2017 to 2018 Bed sediment samples were collected in Lindsey Slough in April 2017, and Middle River and the Mokelumne River in March 2018, to analyze for sediment properties, including bulk density, particle size distribution, and percent organic carbon. Sediment samples were collected within the vegetation with push corers deployed from a small vessel, and in the unvegetated channel with a Gomex box corer, which was subsampled with three push cores per Gomex core. Data are provided in a comma-delimited values spreadsheet. These data were collected as part of a cooperative project, with the USGS California Water Science Center and the California Department of Fish and Wildlife, on the effects of invasive aquatic vegetation on... Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Mokelumne River, Oceans, PCMSC, All tags... Pacific Coastal and Marine Science Center, Sacramento-San Joaquin Delta, Sediment, Sedimentation, State of California, Substrate, U.S. Geological Survey, USGS, bulk density, carbon, dissolved organic compounds, grab sampling, grain-size analysis, push coring, sea-floor characteristics, sediment transport, unconsolidated deposits, Fewer tags Molokaʻi, Hawaiʻi rapid assessment of hydrology in coastal wetland sites 2022 In this project, we assessed the potential for twelve coastal wetland sites on the island of Molokaʻi, Hawaiʻi, to provide socio-cultural resources and habitat for flora and fauna following restoration. In April 2022, a rapid field assessment of hydrology, soils, and vegetation was carried out at each of the wetland sites. In this dataset, all the hydrologic data collected during the rapid field assessment are provided. Categories: Data; Tags: Molokai, biota, groundwater, hydrology, salinity Molokaʻi, Hawaiʻi rapid assessment of soils in coastal wetland sites 2022 In this project, we assessed the potential for twelve coastal wetland sites on the island of Molokaʻi, Hawaiʻi, to provide socio-cultural resources and habitat for flora and fauna following restoration. In April 2022, a rapid field assessment of hydrology, soils, and vegetation was carried out at each of the wetland sites. In this data release, all the soils data collected during the rapid field assessment are provided. Categories: Data; Tags: Molokai, biota, carbon, soil chemistry Swath bathymetric data from three locations in the Sacramento-San Joaquin Delta, California, 2017 to 2018 This part of the data release contains high-resolution swath bathymetry data collected by the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center at three locations in the Sacramento-San Joaquin Delta. Data were collected in Lindsey Slough in April 2017, Middle River in March 2018, and Mokelumne River in March 2018 using an interferometric bathymetric sidescan sonar systems mounted to the USGS R/V Parke Snavely. Data are provided in 1-m resolution GeoTIFF formats. These data were collected as part of a study on the effects of invasive aquatic vegetation on sediment transport in the Sacramento-San Joaquin Delta. Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bathymetry, Bathymetry and Elevation, CMHRP, Coastal and Marine Hazards and Resources Program, Invasive Species, All tags... Lindsey Slough, Middle River, Mokelumne River, PCMSC, Pacific Coastal and Marine Science Center, Sacramento-San Joaquin Delta, Seafloor Topography, State of California, U.S. Geological Survey, USGS, bathymetry, bathymetry measurement, field observation, geoscientificInformation, geospatial datasets, marine geophysics, multibeam sonar, sea-floor characteristics, seabed, Fewer tags