Data and Reports Explorer
Explore our library of NCCOS Technical Memos and various data sets. Filter by the type of publication, research category, region or contact. To access data and reports predating 2017, please visit the Legacy Publications Explorer.
Identification of a vacuolar proton channel that triggers the bioluminescent flash in dinoflagellates
In 1972, J. Woodland Hastings and colleagues predicted the existence of a proton selective channel (HV1) that opens in response to depolarizing voltage across the vacuole membrane of bioluminescent dinoflagellates and conducts protons into specialized luminescence compartments (scintillons), thereby causing a pH drop that triggers light emission. HV1 channels were ...
Identification of Azadinium species and a new azaspiracid from Azadinium poporum in Puget Sound, Washington State, USA
The identification of a new suite of toxins, called azaspiracids (AZA), as the cause of human illnesses after the consumption of shellfish from the Irish west coast in 1995, resulted in interest in understanding the global distribution of these toxins and of species of the small dinoflagellate genus Azadinium, known ...
Identifying Bloom Origins of the Toxic Dinoflagellate Karenia brevis in the Western Gulf of Mexico Using a Spatially Explicit Individual-Based Model
Harmful algal blooms caused by Karenia brevis result in large fish kills, human respiratory irritation, and shellfishing closures in affected areas. Most previous work on bloom formation in the Gulf of Mexico has focused on the west coast of Florida. To investigate the origin of bloom-forming cells along the coast ...
Identifying priorities for adaptation planning: an integrated vulnerability assessment for the Town of Oxford and Talbot County, Maryland
The ecology of the Chesapeake Bay and its watershed is deeply intertwined in the history, culture, and economy of the communities in this region, and provides people with valuable ecosystem services. Due to the connectivity between communities and the environment, the risks associated with flooding, coastal storms, erosion, and sea ...
Identifying Suitable Locations for Mesophotic Hard Corals Offshore of Maui, Hawai’i
Mesophotic hard corals (MHC) are increasingly threatened by a growing number of anthropogenic stressors, including impacts from fishing, land-based sources of pollution, and ocean acidification. However, little is known about their geographic distributions (particularly around the Pacific islands) because it is logistically challenging and expensive to gather data in the ...
Impact of Armored Shorelines on Shore-Zone Fish Density in a Mid-Atlantic, USA, Estuary: Modulation by Hypoxia and Temperature
Anthropogenic modifications of estuarine environments, including shoreline hardening and corresponding alteration of water quality, are accelerating worldwide as human population increases in coastal regions. Estuarine fish species inhabiting temperate ecosystems are adapted to extreme variations in environmental conditions including water temperature, salinity, and dissolved oxygen across seasonal, daily, and hourly ...
Improving methods and indicators for evaluating coastal water eutrophication: A pilot study in the Gulf of Maine
Study Goals and Objectives: 1) Improve existing nutrient-related eutrophication assessment methods, updating (from early 1990s to early 2000s) the eutrophication assessment for systems included in the study with the improved method. 2) Develop a human-use/socioeconomic indicator to complement the assessment indicator. The human-use indicator was developed to evaluate costs of ...
In Situ Effects of Shoreline Type and Watershed Land Use on Submerged Aquatic Vegetation Habitat Quality in the Chesapeake and Mid-Atlantic Coastal Bays
Submerged aquatic vegetation (SAV) is an ecologically and economically valuable component of coastal estuaries that acts as an early indicator of both degrading and improving water quality. This study aimed to determine if shoreline hardening, which is associated with increased population pressure and climate change, acts to degrade SAV habitat ...
In situ, high-resolution time series of dissolved phosphate in Green Bay, Lake Michigan
In nearly every instance in which the environment has been sampled on a higher resolution in time or space, fundamental processes have come to light that were previously undetected or unobserved. In this study, an autonomous dissolved phosphate sensor was deployed at the Entrance Light station in lower Green Bay, ...
Influence of Major Storm Events on the Quantity and Composition of Particulate Organic Matter and the Phytoplankton Community in a Subtropical Estuary, Texas
Variations in the freshwater inflow regimes of estuaries due to perturbations, such as storm events, alter the source, and composition of particulate organic matter (POM) and the phytoplankton community which are key links in estuarine carbon and nitrogen cycling. To evaluate the impact of varying freshwater discharge on POM quantity ...
Influenza A Virus Detected in Native Bivalves in Waterfowl Habitat of the Delmarva Peninsula, USA
We evaluated the prevalence of influenza A virus (IAV) in different species of bivalves inhabiting natural water bodies in waterfowl habitat along the Delmarva Peninsula and Chesapeake Bay in eastern Maryland. Bivalve tissue from clam and mussel specimens (Macoma balthica, Macoma phenax, Mulinia sp., Rangia cuneata, Mya arenaria, Guekensia demissa, ...
Initial skill assessment of the California Harmful Algae Risk Mapping (C-HARM) system
Toxic algal events are an annual burden on aquaculture and coastal ecosystems of California. The threat of domoic acid (DA) toxicity to human and wildlife health is the dominant harmful algal bloom (HAB) concern for the region, leading to a strong focus on prediction and mitigation of these blooms and ...
Initiation and Development of a Toxic and Persistent Pseudo-nitzschia Bloom off the Oregon Coast in Spring/Summer 2015
In spring/summer 2015, a toxic bloom by the diatom Pseudo-nitzschia (PN) occurred along the west coast of the United States which led to closures of the harvest of razor clams and Dungeness crabs. Twice monthly observations of temperature, salinity, nutrients, chlorophyll and phytoplankton species composition allowed us to track oceanographic ...
Inorganic nitrogen release from sediment slurry of riverine and estuarine ecosystems located at different river regimes
The rationale of present study was to compare nature of dissolved inorganic nitrogen (DIN = NH4+ and NO2+3) release from aerobic sediment slurry at two different hydrologic flow regimes. The watershed of the Guadalupe River/Estuary system receives more freshwater inflow compared to the watershed of the Nueces River/Estuary system, thus ...
Integrated Assessment of Ecosystem Condition and Stressor Impacts in Submerged Habitats of the Guana Tolomato Matanzas (GTM) National Estuarine Research Reserve (NERR)
The Guana Tolomato Matanzas reserve is one of 28 National Estuarine Research Reserves (GTMNERR) encompassing approximately 73,300 acres of salt marsh and mangrove tidal wetlands, oyster bars, estuarine lagoons, upland areas, and offshore ocean waters along the northeastern coast of Florida in St. Johns and Flagler Counties (Figure 1). The ...
Integrated Assessment on Hypoxia in the Gulf of Mexico, Topic 1 Report: Characterization of Hypoxia
As part of a process of considering options for responding to hypoxia, the U.S. Environmental Protection Agency (EPA) formed the Mississippi River/Gulf of Mexico Watershed Nutrient Task Force during the fall of 1997, and asked the White House Office of Science and Technology Policy to conduct a scientific assessment of ...
Integrated Assessment on Hypoxia in the Gulf of Mexico, Topic 2 Report: Ecological and Economic Consequences of Hypoxia
As part of a process of considering options for responding to hypoxia, the U.S. Environmental Protection Agency (EPA) formed the Mississippi River/Gulf of Mexico Watershed Nutrient Task Force during the fall of 1997, and asked the White House Office of Science and Technology Policy to conduct a scientific assessment of ...
Integrated Assessment on Hypoxia in the Gulf of Mexico, Topic 3 Report: Flux and Sources of Nutrients in the Mississippi-Atchafalaya River Basin
As part of a process of considering options for responding to hypoxia, the U.S. Environmental Protection Agency (EPA) formed the Mississippi River/Gulf of Mexico Watershed Nutrient Task Force during the fall of 1997, and asked the White House Office of Science and Technology Policy to conduct a scientific assessment of ...
Integrated Assessment on Hypoxia in the Gulf of Mexico, Topic 4 Report: Effects of Reducing Nutrient Loads to Surface Waters within the Mississippi River Basin and the Gulf of Mexico
As part of a process of considering options for responding to hypoxia, the U.S. Environmental Protection Agency (EPA) formed the Mississippi River/Gulf of Mexico Watershed Nutrient Task Force during the fall of 1997, and asked the White House Office of Science and Technology Policy to conduct a scientific assessment of ...
Integrated Assessment on Hypoxia in the Gulf of Mexico, Topic 5 Report: Reducing Nutrient Loads, Especially Nitrate-Nitrogen, to Surface Water, Ground Water, and the Gulf of Mexico
As part of a process of considering options for responding to hypoxia, the U.S. Environmental Protection Agency (EPA) formed the Mississippi River/Gulf of Mexico Watershed Nutrient Task Force during the fall of 1997, and asked the White House Office of Science and Technology Policy to conduct a scientific assessment of ...
