These data describe the first comprehensive study to quantitatively assess impacts of the explosive removal of offshore oil and gas structures on fish. The most severely impacted fish species at explosive structure removals in order of abundance were Atlantic spadefish (Chaetodipterus faber), blue runner (Caranx crysos), red snapper (Lutjanus campechanus), and sheepshead (Archosargus probatocephalus). These four species accounted for 86% of estimated mortality. Mortality estimates for red snapper were incorporated into stock assessment analyses. The impact of including explosive platform removal data was that abundance estimates were almost indistinguishable from the original assessment. The differences were well within the statistical estimation variances for the original assessment.

This data contains visual observations as well as Predatory snail removal and analysis on several reef plots in the Florida Keys. During the initial removal in June 2011, 639 snails were removed from twelve 150m2 plots. Snails were removed 2 additional times during a seven month removal phase, and then counted at five surveys over the next 19 months to track recolonization. At the conclusion, snails were collected, measured and sexed.

The AVHRR Clear-Sky Processor over Oceans, jointly developed between NESDIS STAR and OSDPD, produces AVHRR clear-sky products over oceans. ACSPO generates output files from two processors: 1) The ACSPO Orbital Processor, which reads in AVHRR L1b GAC files, performs retrievals, and writes the results in the output orbital HDF file; and 2) The ACSPO Granule Processor, which reads in the Orbital Processor output HDF files, removes duplicate data, generates 1-hour granules, and writes these HDF granule files in the structure defined by the ACSPO Granule Processor control file. Only Granule Processor output files (granules) are archived. ACSPO data products include clear-sky radiances (CSR), sea surface temperature (SST), and aerosol optical depth (AOD). All parameters are in original satellite projection (swath files) and are computed for current operational POES satellites, POES back-up satellites, and MetOp satellites, from AVHRR-GAC, AVHRR-LAC, AVHRR-HRPT and AVHRR-FRAC input data. These products are NOAA Processing Level 2. The data are in HDF4 format.

No description is available. Visit https://dataone.org/datasets/%7B021CB43B-8E62-48A8-AD12-FF44C012F911%7D for complete metadata about this dataset.

During the spring of 1999, the Delaware Coastal Programs (DCP) identified the spatial extent of macroalgae in the shallow portions of Rehoboth Bay utilizing traditional photogrammetric methods. The DCP used true color aerial photographs, image processing software, a geographical information system (GIS), and a limited field survey to identify 1.88 square kilometers of macroalgae in all but the deepest parts of the bay. Turbid conditions prevented identification of the full extent of the vegetation. Although the 1999 effort was highly successful, it was clear that aerial photography could not penetrate to the deeper parts of the bay or where conditions were turbid.

For the 2000 effort, the DCP partnered with the National Oceanic and Atmospheric Administration (NOAA) Office for Coastal Management (formerly the Coastal Services Center). The Benthic Habitat Mapping project utilized a RoxAnn acoustic sensor to identify benthic cover in turbid areas of the bay June 12-16, 2000. The instrument was used to identify bottom type by extracting data on bottom roughness and bottom hardness from the primary and secondary sounder echoes. The data is classified on-the-fly, using a towed video camera for field validation, and subject to a post-processing classification. The unit collected data throughout the bay in areas greater than 1.4 meters in depth and serves as a powerful complement to the aerial photography. The RoxAnn data points were exported into a geographic information system (GIS) and post-processed to remove unreliable data points and re-classified. This data set is comprised of the cleaned, attributed point data. The attributes include location, date, time, depth, field derived classification, and the classification derived from post-processing the data. This system is fully described in Development of a System for Classification of Habitats in Estuarine and Marine Environments (SCHEME) for Florida, Report to U.S. EPA - Gulf of Mexico Program, Florida Fish and Wildlife Conservation Commission, Florida Marine Research Institute. Review Draft 12/04/02.

We are collecting stream channel geometry and bed sediment grain size distribution data at Sedgeunkedunk stream to evaluate physical habitat changes associated with the Brewer Dam removal. These data complement studies led by others that are investigating biological responses to the project. Together, the physical and biological data collected in the lower Sedgeunkedunk stream help us understand the effectiveness of dam removal for restoring diadromous fish access and ecosystem recovery.

We are collecting stream channel geometry and bed sediment grain size distribution data at the Parker River to evaluate physical habitat changes associated with the planned Larkin Mill Dam removal. In addition to evaluating channel response to dam removal, our two years of pre-removal data collection (2008 and 2010) bracketed a large flood event that allowed us to investigate whether this small dam is an efficient sediment trap. Our analyses suggest that sediments readily move over the dam during storm events and other flows, and we hypothesize that, aside from a thin active surface layer where erosion and deposition regularly occurs, the small quantity of stored sediments are relatively stable.

Water quality at 10 recreational beaches in Mamala Bay and in the nearshore ocean were monitored over a period of 12 months in 1993-1994 to determine the impact of sewage discharges and non-point source pollution on conditions in the bay. Measurements included temperature, salinity, nutrients and other parameters. The data were collected under direction of Dr. Edward Laws of the University of Hawaii for the Mamala Bay Study, Ecosystem Response Study, MB-9. Samples were collected by wading into the water and filling a 20-liter carboy with water from just below the surface in water about one meter deep.

 Samples were collected at the ten beaches on a monthly

basis from August 1993 to July 1994. The samples were collected from just below the surface in acid-cleaned 20-liter plastic carboys at a distance from the shoreline where the water column was one meter deep. The temperature of the water was recorded immediately using a thermometer calibrated to 0.1 oC and the conductivity measured with an Extech Oyster conductivity meter. Upon return to the laboratory, aliquots of the water were filtered through GF/F filters for further analysis. The filtrates were used to determine inorganic nutrient concentrations as previously described. Samples for PC and PN analysis were collected on precombusted GF/F filters and processed as described above. Samples for chl a and carotenoid pigment analysis were collected on GF/F filters and placed in liquid nitrogen prior to extraction. The pigments were extracted by placing the filters in approximately 5 ml of acetone for 12 h. The filters were then ground using a Wheaton tissue grinder and the filter residue removed by centrifugation as described in Strickland and Parsons (1972). The extracted pigment concentrations were then determined on a Varian 5000 high performance liquid chromatograph (HPLC) as described by Laws et al. (1990).

This data set consists of 0.5-meter pixel resolution, four band orthoimages covering the Humboldt Bay area. An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map. Each orthoimage provides imagery over a DOQQQ with a 100-meter image overlap between adjacent files. The projected coordinate system is UTM Zone 10 North with a NAD83 datum. This data depicts geographic features on the surface of the earth. It was created to provide easily accessible geospatial data which is readily available to enhance the capability of Federal, State, and local emergency responders, as well as plan for homeland security efforts. This data also supports The National Map. Original data are in .img and .ige (ERDAS Imagine and ERDAS Imagine Large Raster Spill file) format with associated browse graphics, .his files, and metadata in text format.

Primarily from the Hawaii Coral Reef Initiative, yet also support from The Nature Conservancy of Hawai'i, State Division of Aquatic Resources, U.S. Fish and Wildlife Service, Project Reef Check, University of Hawai'i's Waikiki Aquarium, U.S. Environmental Protection Agency and UH Botany Department.

This project examined the results of the field manipulative experiment that has been set up to test the ecological effects of introduced roi on reef fish associations in West Hawaii. This on-going research project, which began in September 2010, evaluates the impact of roi removal by collaborating with local fishers to remove >90% of the roi from a patch reefs in Puako, West Hawaii.

In situ observations of the introduced predatory grouper roi (Cephalopholis argus) were taken semi-annually within the coral reef ecosystem of Puako, northwest side of the Island of Hawaii October 2010 - July 2012. Visual fish transects were made at a depth range of 10-20 m. Tow board and standard visual belt transects were employed at control, reference, and treatment sites. Data include biometrics (length and weight) and biomass of roi, as well as an assemblage of other fish and feed guilds. Additional data on the movement of roi within the Puako area were collected using a fish tagging program followed by surveys for recapture and resighting.

NODC Accession 0082197 contains similar data from November 2010 - June 2011. There is some overlap of data within 0082197 and the present accession.

This study was designed to provide baseline knowledge of seafloor geology and invertebrate distributions at a regional scale by undertaking new mapping, synthesizing existing mapping data, conducting biological assessments, and developing new predictive models. This data set (macrofaunal abundances) provides a baseline distribution of these species that are likely to be most directly affected by offshore renewable energy installations.

Six sites were visited across northern California (2 sites), Oregon (3 sites) and Washington (1 site) during summer 2010 and collected 118 macrofaunal samples using a 0.1 m2 box-corer. Two additional sites were sampled (34 additional grabs) during the summer of 2012 to fill in latitudinal and habitat gaps. Sediment samples were sieved using 1 mm mesh and all macrofaunal organisms were identified and counted after a sub-sample was removed for particle size analysis. CTD casts were conducted to obtain physical data from the water column overlying the sites for further habitat characterization at each box core sampling station. This data set contains physical data (water properties and sediment characteristics) at 152 sampling stations across the 8 sites sampled in 2010 and 2012.

This data package is comprised of two sets of discrete in-situ current velocity measurements from the Agulhas Current Timeseries mooring array, from April 2010 to February 2013. Each netCDF file in the set represents a single instrument's complete record of east and north velocity components, as well as instrument depth, with respect to time. The records have been edited to remove samples stored during the deployment and recovery periods, and have been corrected for magnetic declination and local sound velocity.

Very complex sediment-distribution patterns are found on the continental shelf of Santa Monica Bay. In the winters of 1998, 1999 and 2000, a series of moorings were deployed to understand how coastal ocean processes that move sediments change with location on the shelf. It was discovered that internal bores found near the shelf break have bottom currents strong enough to remove all the fine material in the region.

Abstract: This CD-ROM (Compact Disk - Read Only Memory) contains sidescan sonar, high-resolution seismic-reflection, bathymetric, textural, and bibliographic data and interpretations collected, compiled, and produced through the U.S. Geological Survey/State of Connecticut Cooperative and the Long Island Sound Environmental Studies Project of the Coastal and Marine Geology Program, U.S. Geological Survey during October 1991 to August 1998. Cooperative research with the State of Connecticut was initiated in 1982. During the initial phase of this cooperative program, geologic framework studies in Long Island Sound were completed. The second and current phase of the program, which is the focus of this CD-ROM, emphasizes studies of sediment distribution, processes that control sediment distribution, near-shore environmental concerns, and the relationship of benthic communities to sea-floor geology. The study area covers all of Long Island Sound, which is bordered on the north by the rocky shoreline of Connecticut, on the east by Block Island Sound, on the south by the eroding sandy bluffs of Long Island, and on the west by the East River and the New York metropolitan area.

Sidescan sonar data were variously collected with 100 kHz Klein, Datasonics, and Edgetech systems under two survey schemes. In the first scheme, the data were collected along closely-spaced grids where the ship tracks were spaced 150 m apart and the sonar system was set to sweep 100 m to either side of the ship's track. This scheme produced the continuous-coverage acoustic images that are stored on the CD-ROM as TIF files. In the second scheme, the sidescan sonar data collected along reconnaissance lines spaced about 2,400 m apart. Only selected portions of this data, when used for geologic interpretation, are stored on this CD-ROM. Under both survey schemes, the sidescan sonar data were processed according to procedures summarized by Danforth and others (1991) and Paskevich (1992a, 1992b, 1992c).

The seismic reflection data were variously collected with an Ocean Research Equipment 3.5-kHz profiler transmitting at a 0.25-s repetition rate and a Datasonics CHIRP system set to sweep between 2-7 kHz. Only selected seismic-reflection data, which are used as examples in geologic interpretations, are stored as GIF-formatted images on this CD-ROM.

Navigation during this project was determined with a differential Global Positioning System (GPS); position data were logged at 10-second intervals. The bathymetric data were collected by means of a 200-kHz echo sounder and logged digitally.

Surficial sediment (0-2 cm below the sediment-water interface) sampling completed as part of this project was conducted using a Van Veen grab sampler equipped with an Osprey video and still camera system. The photographic system was used to appraise bottom variability around stations, faunal communities, and sedimentary processes. It also documented bedrock outcrops and boulder fields where samples could not be collected. The fine fraction (less than 62 microns) was analyzed by Coulter Counter (Shideler, 1976); the coarse fraction was analyzed by sieving (gravel) and by rapid sediment analyzer (sand; Schlee, 1966). The data were corrected for the salt content of interstitial water. Size classifications are based on the method proposed by Wentworth (1929) and were calculated using the inclusive graphics statistical method (Folk, 1974), using the nomenclature proposed by Shepard (1954). A detailed discussion of the sedimentological methods employed are given in Poppe and others (1985); a detailed description of the methods used to perform the CHN analyses are given in Poppe and others (1996) . The database presented here contains over 14,000 records and 83 fields (see the Data Dictionary below). The specific fields and parameters have been chosen based on the data produced by the sedimentation laboratory of the Coastal and Marine Geology Program of the U.S. Geological Survey in Woods Hole, Mass., and the format of information typically found in the literature. Because the data have come from numerous sources, there are differing amounts and types of information. Most of the samples or sets of samples do not have data in all of the given fields. However, additional fields, qualifiers, and data can be added in virtually unlimited fashion to accommodate specific needs. The database itself is provided in four formats: Microsoft EXCEL, ver. 5, Quattro Pro for Windows, Dbase IV, and Tab-delimited ASCII text.

Four bathymetric data sets are presented and include:1) Interpretations of the bathymetry within the continuous-coverage sidescan sonar study areas; 2} The NOS database modified to remove extraneous data (i.e. bouys); 3) Contoured National Ocean Service (NOS) bathymetry digitized by Applied Geographics Inc., Boston, Massachusetts; and 4) a fly-by b... Visit https://dataone.org/datasets/%7B7A65EBA1-AD50-4B1A-B773-CA015F33BAB8%7D for complete metadata about this dataset.

The Orange Keyhole Sponge, Mycale armata Thiele, was unknown in Hawaii prior to 1996. First reported in Pearl Harbor, it now occurs in virtually every commercial harbor in the main Hawaiian islands, where it can be a major component of the fouling community on harbor piers and jetties. It has been reported from a few coral reef locations near harbors, but in Kaneohe Bay it has become a major component of the benthic biota in the south bay in the last 5-10 years. A study was conducted in 2004-2005 to determine Mycale armata's distribution, abundance throughout the bay, its growth rates on permanent quadrats, and whether mechanical removal would be an effective management technique for its control. Results from 190 manta board surveys on 28 reefs and paired 25 m belt transects using photo quadrats on 19 reefs indicated that the sponge had maximal coverage in the south-central part of the bay, in the vicinity of Coconut Island.