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Sediment Deposition and Accretion Data from a Tidal Salt Marsh in South San Francisco Bay, California 2021-2022 The U.S. Geological Survey, Western Ecological Research Center collected sediment and accretion data at a wave-exposed tidal salt marsh in South San Francisco Bay, California. Sediment traps and feldspar marker horizons (MH) were deployed along transects of increasing distance from the sediment source, at primary, secondary and tertiary marsh channels/bay. Data were collected bi-monthly over two month periods in summer 2021 and winter 2021/2022. Included here are trap and MH plot locations, calculated sediment fluxes at each station by deployment period, annual accretion rates, and covariates associated with sediment deposition and accretion including vegetation structure and elevation. This project aimed to assess... Categories: Data; Tags: Ecology, Eden Landing Ecological Reserve, High Salt Marsh, Land Use Change, San Francisco Bay, All tags... Sedimentology, USGS Science Data Catalog (SDC), accretion, biota, blue carbon, carbon, sea-level change, sediment transport, surface deposition, wetland ecosystems, Fewer tags Database of Sediment Accretion and Elevation Change Rates for Coastal Marshes of Northeastern United States, Derived from Studies Published from 1975 through 2022 Vertical accretion and elevation change of marshes is a critical factor controlling marsh survival and adaptability to rising sea levels. A wide variety of existing methods have been employed to measure accretion and elevation change in marshes on time scales ranging from weeks to centuries on many individual marshes located throughout the coastal northeastern United States. This dataset is a compilation of marsh accretion and elevation change rates compiled from a total of 27 published studies and 3 data sets published from 1975 through 2021, yielding a total of 292 individual estimates of marsh accretion or elevation change. The database includes: measurements of marsh surface elevation change from repeat surveys... Categories: Data; Tags: Brackish Marsh, Connecticut Coastal, Freshwater Tidal Marsh, High Salt Marsh, Low and Intermediate Salt Marsh, All tags... Maine Coastal, Massachusetts-Rhode Island Coastal, New England, New Hampshire, New York, United States, geoscientificInformation, marsh, sedimentation studies, wetland, Fewer tags Chloropyron maritimum subsp. maritimum population counts, tide, and weather data for Sweetwater Marsh National Wildlife Refuge Chloropyron maritimum subsp. maritimum population counts at Sweetwater Marsh National Wildlife Refuge, California, and tide and weather data from San Diego, California, are used to explain interannual variation in Chloropyron counts and to predict past population counts. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Ecology, High Salt Marsh, San Diego, Southern California Bight, USGS Science Data Catalog (SDC), All tags... Water Resources, air temperature, biota, endangered species, population dynamics, precipitation (atmospheric), tides (oceanic), Fewer tags Database of Sediment Mass Accumulation for Coastal Marshes of Northeastern United States from Sediment Trap Deployments during 2020 and 2021 A critical factor controlling marsh survival and adaptability to rising sea level is an adequate supply of sediment for supporting upward growth of marshes, yet sediment availability and the factors that control its delivery to marshes remain poorly constrained. This dataset includes the results of sediment trap deployments and accompanying water level recordings from 9 coastal salt marshes in the northeastern United States. Sediment traps were deployed seasonally, with individual spring, summer, and fall deployment periods over the course of 2020-2021. The distribution of study sites spans differences in tidal range, wave climate, sea surface temperature, and assemblages of marine organisms. Additionally, these... Categories: Data; Tags: Brackish Marsh, Freshwater Tidal Marsh, High Salt Marsh, Low and Intermediate Salt Marsh, Maine Coastal, All tags... Massachusetts, New England, New Hampshire, United States, geoscientificInformation, marsh, sedimentation studies, wetland, Fewer tags