47907 me_wells01_sedgrabs-meta Data Set Published / External 37225 Benthic Project Completed 2005-05-31 In fall 2001, researchers from the Wells National Estuarine Research Reserve, Virginia Institute of Marine Science, and the NOAA Office for Coastal Management conducted a project to map benthic habitats in the York and Webhannet rivers in southern Maine. The team completed two weeks of fieldwork in September 2001, collecting sediment profile images at 382 stations and sediment grab samples at 93 stations. This data set represents the sediment grain size and organic content information gathered from grab sampling. Original contact information: Contact Name: Dr. Michele Dionne Contact Org: Wells National Estuarine Research Reserve Phone: (207) 646-1555 The Wells Reserve is using the 2001 grab and SPI information to characterize benthic habitats within the York and Webhannet rivers, and to examine relationships between animal communities and sediment characteristics as well as the potential effects of dredging activities. Grain size and percent organic content were measured from the sediment grab samples. 10064 Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > ESTUARY Theme ISO 19115 Topic Category biota Spatial Global Change Master Directory (GCMD) Location Keywords CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MAINE Theme Environmental Monitoring Theme GIS Theme geographic information system Theme grain size Theme sediment Theme sediment grab Spatial Maine Spatial Webhannet River Spatial Wells Spatial York Spatial York River Office for Coastal Management Charleston SC Data Set None Planned Map (digital) While every effort has been made to ensure that these data are accurate and reliable within limits of the state of the art, NOAA will not assume any liability for damages caused by any inaccuracies in these data, or failure in their use. NOAA Office for Coastal Management 49319 sedgrabs.dbf Published / External Completed Database file | Description Source: unknown Converted from FGDC using 'fgdc_to_inport_xml_entity.pl' script. 1 FID Unknown No No Active Internal feature number. | Description Source: ESRI Sequential unique whole numbers that are automatically generated. 2 Shape Unknown No No Active Feature geometry. | Description Source: ESRI Coordinates defining the features. 3 STATION NUMBER No No Active Unique identifier for sample sites. | Description Source: NOAA Office for Coastal Management 101 - 888 4 RIVER VARCHAR No No Active Designates Webhannet and York sample sites. | Description Source: unknown Webhannet: unknown | York: unknown | 5 LATITUDE NUMBER No No Active Latitude in decimal degrees. | Description Source: unknown 43.12551 - 43.32913 6 LONGITUDE NUMBER No No Active Longitude in decimal degrees. | Description Source: unknown -70.67694 - -70.55597 7 FOLK VARCHAR No No Active Wentworth classification scale describing grain size (from Folk 1974). | Description Source: Folk, R.L. 1974. Petrology of Sedimentary Rocks. Austin, Texas. Clayey Sand: unknown | Gravelly Sand: unknown | Sand: unknown | Sandy Gravel: unknown | Sandy Silt: unknown | Silty Sand: unknown | 8 GRAVEL NUMBER No No Active Percent by mass of gravel size component (includes cobble, gravel, and shell hash). | Description Source: unknown 1.59 - 99.92 9 SAND NUMBER No No Active Percent by mass of sand component. | Description Source: unknown 25.07 - 100 10 SILT NUMBER No No Active Percent by mass of silt component. | Description Source: unknown 0 - 46.85 11 CLAY NUMBER No No Active Percent by mass of clay component. | Description Source: unknown 0 - 19.82 12 SILTCLAY NUMBER No No Active Percent by mass of silt and clay combined. | Description Source: unknown 0 - 51.98 13 SANDGRAV NUMBER No No Active Percent by mass of sand and gravel combined. | Description Source: unknown 48.02 - 100 14 MEDIAN NUMBER No No Active Median grain size in phi | Description Source: unknown 0.6889 - 3.3083 15 TOC NUMBER No No Active Percent total organic carbon based on weight loss upon ignition in a muffle furnace. | Description Source: unknown -2.67 - 2.06 Data Steward 2005-05-31 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Distributor 2005-05-31 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Metadata Contact 2005-05-31 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Point of Contact 2005-05-31 Organization NOAA Office for Coastal Management NOAA/OCM coastal.info@noaa.gov 2234 South Hobson Ave Charleston SC 29405-2413 (843) 740-1202 https://coast.noaa.gov NOAA Office for Coastal Management Home Page Online Resource Ground Condition -70.682172 -70.55111 43.329201 43.125142 Range 2001-09-11 2001-09-18 Yes Yes 90 Unclassified None These data should be used for resource mapping and comparison purposes only. While every effort has been made to ensure that these data are accurate and reliable within limits of the state of the art, NOAA and the Wells Reserve will not assume any liability for damages caused by any inaccuracies in these data, or failure in their use. For use of these data in published analyses within the first two years of development, please contact Dr. Michele Dionne at the Wells Reserve for use permission. https://ocmgeodatastor1.blob.core.windows.net/benthic-data/Benthic/Grab_Sample_Data/ME_Wells_sedgrabs.zip https://coast.noaa.gov/ NOAA's Office for Coastal Management (OCM) website Online Resource Information on the NOAA Office for Coastal Management (OCM) 2017-03-30 Date that the source FGDC record was last modified. 2017-11-14 Converted from FGDC Content Standard for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. 2018-02-08 Partial upload of Positional Accuracy fields only. 2018-04-11 Partial upload to move data access FTP links to Distribution Info and remove broken URLs. Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.3.0.800 Values were checked against hard copy data sheets provided by the analysis laboratory. Stations were located in the field using a differential Global Positioning System (GPS), and station coordinates, date and time of day were recorded upon arrival at each station. Not relevant to the data set. All grab data were not included in this data layer. Percent values of sand, silt, clay, gravel, sand and gravel combination, silt and clay combination, and total organic content, as well as a Folk description of grain size and median grain size (in phi units) are included. Other calculated grain size metrics (such as mean grain size and percent skewness) were not included, but these data can be found in the project database at the Wells Reserve. All data are believed to be logically consistent. Wells Reserve Sediment Survey, September 2001 Virginia Institute of Marine ScienceWells National Estuarine Research Reserve Range 2001-09-11 2001-09-18 Textural analysis and organic content for sediment grabs collected in Webhannet and York Rivers, Maine. | Source Geospatial Form: None | Type of Source Media: database table 1 Field Methods: Grabs for sediments and benthos were collected from 11 to 18 September at a total of 93 stations. A Young grab, 0.044 m2 surface area, was deployed twice to collect a sample for substrate and a sample for benthic community data. The Young grab is the same sampler used by EPA in its Environmental Monitoring and Assessment Program (EMAP) and Mid-Atlantic Integrated Assessment (MAIA) programs. The Young grab is similar to a van Veen grab that has been placed in a frame to hold it level with the sediment surface while a sample is collected. Grabs without frames tend to twist and collect uneven samples. Because of its frame, the Young grab functions well in both soft and hard sediment. Laboratory Methods: From the sediment grab, two sediment subsamples of about 50 g were taken, one for total organic carbon (TOC) analysis and one for sediment grain-size analysis. Both samples were placed on ice in the field and frozen in the laboratory until they were analyzed. TOC was determined by weight lost on ignition (Wells NERR, ME). Ten grams of wet sediment were dried at 60 degrees Celsius for 2 to 3 days and combusted at 500 degrees Celsius for 2 hours. Sediment grain-size distributions and sand fraction distributions were determined (by Virginia Institute of Marine Science (VIMS) Analytical Services Laboratory, Gloucester Pt., VA). Grain-size distributions were determined using wet sieve techniques for fines and sand size fractions were measured using a Rapid Sediment Analyzer. Reference: Folk, R.L. 1974. Petrology of Sedimentary Rocks. Austin, Texas. 2001-09-01T00:00:00 2 Data from field samples was entered into an Access database for the Wells, Maine benthic sediment survey. A query was developed to review sediment data from all grab sampling stations. See Entity and Attribute section for more information on data collected. A shapefile was created using the field data in the Access database to show spatial trends in sediment distribution in the two rivers. 2004-05-01T00:00:00 49319 Entity gov.noaa.nmfs.inport:47907 Anne Ball 2017-11-14T12:57:33 Jesse Brass 2026-06-19T19:09:48 2018-04-11 Office for Coastal Management OCM 1002 Public No No 2018-04-11 1 Year 2019-04-11