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DENITRIFICATION ACROSS LANDSCAPES AND WATERSCAPES: A SYNTHESIS Denitrification is a critical process regulating the removal of bioavailable nitrogen (N) from natural and human-altered systems. While it has been extensively studied in terrestrial, freshwater, and marine systems, there has been limited communication among denitrification scientists working in these individual systems. Here, we compare rates of denitrification and controlling factors across a range of ecosystem types. We suggest that terrestrial, freshwater, and marine systems in which denitrification occurs can be organized along a continuum ranging from (1) those in which nitrification and denitrification are tightly coupled in space and time to (2) those in which nitrate production and denitrification are relatively... Categories: Publication; Types: Citation; Tags: Lakes, continental shelf, denitrification, estuaries 2010 Yearly Report for Predicting Climate Change Threats to Key Estuarine Habitats and Ecosystem Services in the Pacific Northwest In December 2009, a workshop sponsored by the US Geological Survey and the US Environmental Protection Agency was held to identify on-going sea level rise (SLR) modeling efforts, data gaps, and information needs for management decisions about current and future mitigation and restoration efforts in Oregon estuaries. The workshop brought together 46 non-governmental organizations, federal scientists, state land managers, and SLR modelers and has inspired collaborations for data, knowledge, and technology exchange. A second SLR workshop was scheduled for February 1 and 2, 2011 in Newport, OR to continue to build upon the collaborative efforts established at the first workshop. Categories: Publication; Types: Citation; Tags: National CASC, Sea Level Affects Marshes Model, Sea-Level Rise and Coasts, Water, Coasts and Ice, estuaries, All tags... sea surface temperature, sea-level rise, submerged aquatic vegetation, Fewer tags Modeling Tides and Storm Surge Under Varying Sea Ice Conditions in the Gulf of Alaska and Bering, Chukchi, and Beaufort Seas An integrated high resolution tide and storm surge model has been developedfor all of coastal Alaska. The model uses the ADCIRC basin-to-channelscale unstructured grid circulation code. Tidal forcing from global tidal modelsand meteorological forcing from the Climate Forecast System Reanalysisare used. The model’s tidal solution has been validated at 121 shelf andnearshore stations. The model’s skill has been investigated for summer, falland winter storms. Sea ice has been incorporated through a parameterizedwind drag coefficient which modifies the air-sea drag under ice coverage.Three large storms with distinctly different ice coverages were chosen to exhibitthe effect of sea ice on the resulting storm surge. The... Categories: Data, Publication; Types: Citation; Tags: Academics & scientific researchers, COASTAL AREAS, COASTAL AREAS, COASTAL PROCESSES, COASTAL PROCESSES, All tags... DELTAS, DELTAS, ESTUARIES, ESTUARIES, FLOODING, FLOODING, Federal resource managers, ICE EXTENT, ICE EXTENT, ICE GROWTH/MELT, ICE GROWTH/MELT, LCC Network Science Catalog, MODELS, MODELS, Publication, Regional & county planners, Report, STORM SURGE, STORM SURGE, STORMS, STORMS, TIDES, TIDES, WAVE SPEED/DIRECTION, WAVE SPEED/DIRECTION, WIND SPEED/WIND DIRECTION, WIND SPEED/WIND DIRECTION, Western Alaska Landscape Conservation Cooperative data.gov, climatologyMeteorologyAtmosphere, climatologyMeteorologyAtmosphere, disaster, disaster, environment, environment, geoscientificInformation, geoscientificInformation, oceans, oceans, underDevelopment, Fewer tags Predicting the Impact of Glacier Loss This paper explores the impacts of shrinking glaciers on downstream ecosystems in the Arctic National Wildlife Refuge. Glaciers here are losing mass at an accelerating rate and will largely disappear in the next 50–100 years if current trends continue. We believe this will have a measurable and possibly important impact on the terrestrial and estuarine ecosystems and the associated bird and fish species within these glaciated watersheds. Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Academics & scientific researchers, Arctic Landscape Conservation Cooperative data.gov, ESTUARIES, ESTUARIES, Federal resource managers, All tags... GLACIERS, GLACIERS, LCC Network Science Catalog, Publication, RIVERS/STREAMS, RIVERS/STREAMS, WATER QUALITY/WATER CHEMISTRY, WATER QUALITY/WATER CHEMISTRY, climatologyMeteorologyAtmosphere, climatologyMeteorologyAtmosphere, completed, environment, environment, Fewer tags Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Percent of Watershed Covered by Waterbodies from NHD High Resolution This tabular data set represents the presence of six National Hydrography Dataset (NHD) high resolution waterbody types compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. The six types of waterbodies presented here are: playa, ice mass, lake/pond, reservoir, swamp/marsh, and estuary. This dataset can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data is the NHDPlus high resolution waterbodies produced by USGS , 2015. Units are percent. Reach catchment information characterizes data at the local scale.... Types: Citation; Tags: Catchment, Conterminous United States, Inlandwaters, NAWQA, NHD high resolution waterbodies, All tags... NHDPlus, SPARROW, estuaries, ice, lakes, marshes, playas, ponds, reservoirs, swamps, Fewer tags Landward migration of tidal saline wetlands with sea-level rise and urbanization: a comparison of northern Gulf of Mexico estuaries Coastal wetland ecosystems are expected to migrate landward in response to accelerated sea-level rise. However, due to differences in topography and coastal urbanization extent, estuaries vary in their ability to accommodate wetland migration. The landward movement of wetlands requires suitable conditions, such as a gradual slope and land free of urban development. Urban barriers can constrain migration and result in wetland loss (coastal squeeze). For future-focused conservation planning purposes, there is a pressing need to quantify and compare the potential for wetland landward movement and coastal squeeze. For 41 estuaries in the northern Gulf of Mexico (i.e., the USA gulf coast), we quantified and compared... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alabama, Florida, Gulf of Mexico, Louisiana, Mississippi, All tags... North America, Sea-Level Rise and Coasts, South Central CASC, Southeast CASC, Texas, USGS Science Data Catalog (SDC), United States, Water, Coasts and Ice, Wetlands, biota, climate change, climate change, effects of climate change, environment, estuaries, estuary, natural resource management, planning Cadastre, sea level change, sea-level change, wetlands, wetlands, Fewer tags Strontium isotope record of seasonal scale variations in sediment sources and accumulation in low-energy, subtidal areas of the lower Hudson River estuary Strontium isotope (87Sr/86Sr) profiles in sediment cores collected from two subtidal harbor slips in the lower Hudson River estuary in October 2001 exhibit regular patterns of variability with depth. Using additional evidence from sediment Ca/Sr ratios, 137Cs activity and Al, carbonate (CaCO3), and organic carbon (OCsed) concentration profiles, it can be shown that the observed variability reflects differences in the relative input and trapping of fine-grained sediment from seaward sources vs. landward sources linked to seasonal-scale changes in freshwater flow. During high flow conditions, the geochemical data indicate that most of the fine-grained sediments trapped in the estuary are newly eroded basin materials.... Categories: Publication; Types: Citation; Tags: Cesium-137, Hudson River estuary, estuaries, sediment Standardization and Application of an Index of Community Integrity for Waterbirds in the Chesapeake Bay This data set is comprised of five files related to the modification and scoring of Index of Waterbird Community Integrity (IWCI) scores for all waterbirds of the Chesapeake Bay. One Excel file (A) contains a list of 100+ Chesapeake waterbird species and their species attribute and IWCI scores. Another Excel file (B) contains case study data from recent surveys of breeding and migratory waterbirds in Chesapeake Bay and shoreline delineations across a disturbance gradient that were used to demonstrate the utility of the modified index. Finally, three supplemental files include an Access database (C), R code (D) and a protocol (E) for running the complex steps to calculate index scores. Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Anthropogenic Disturbance, Biological Indicators, Chesapeake Bay, Ecological Integrity, Estuaries, All tags... USGS Science Data Catalog (SDC), Waterbirds, Fewer tags Effects of local shoreline and subestuary watershed condition on waterbird use influences of geography scale and season in the Chesapeake Bay This dataset is comprised of six files related to waterbird surveys and resulting Index of Waterbird Community Integrity (IWCI) scores in 21 subestuaries of the Chesapeake Bay from 2010-2014. Two .csv files (1 data file: Prosser et al 2017_IWCI Results MS_Bird Survey Raw Data.csv, 1 definitions file: Prosser et al 2017_IWCI Results MS_Bird Survey Raw Data_Definitions.csv) contain data related to raw waterbird survey data from two seasons (summer and fall). Two .csv files (1 data file: Prosser et al 2017_IWCI Results MS_Species List.csv, 1 definitions file: Prosser et al 2017_IWCI Results MS_Species List_Definitions.csv) contain data related to 60+ Chesapeake waterbird species observed in surveys and their species... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Anthropogenic Disturbance, Biological Indicators, Chesapeake Bay, Ecological Integrity, Estuaries, All tags... USGS Science Data Catalog (SDC), Waterbirds, Wildlife Disease, Fewer tags