gov.noaa.nmfs.inport:47907 eng UTF8 dataset Office for Coastal Management resourceProvider NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact 2026-06-19T19:09:48 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) point 90 Sediment Grab Data from September 2001 in Wells, Maine (wellssedgrabs) me_wells01_sedgrabs-meta 2005-05-31 publication NOAA/NMFS/EDM 47907 https://www.fisheries.noaa.gov/inport/item/47907 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information https://coast.noaa.gov/ WWW:LINK-1.0-http--link NOAA's Office for Coastal Management (OCM) website Information on the NOAA Office for Coastal Management (OCM) download mapDigital 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. NOAA Office for Coastal Management completed NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information custodian notPlanned EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > ESTUARY theme Global Change Master Directory (GCMD) Science Keywords 23.3 CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MAINE place Global Change Master Directory (GCMD) Location Keywords 23.3 Environmental Monitoring GIS geographic information system grain size sediment sediment grab theme Maine Webhannet River Wells York York River place DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Benthic project InPort otherRestrictions Cite As: Office for Coastal Management, [Date of Access]: Sediment Grab Data from September 2001 in Wells, Maine (wellssedgrabs) [Data Date Range], https://www.fisheries.noaa.gov/inport/item/47907. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: None otherRestrictions Use Constraints: 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. otherRestrictions Distribution Liability: 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. unclassified vector eng; US biota Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.3.0.800 -70.682172 -70.55111 43.125142 43.329201 | Currentness: Ground Condition 2001-09-11 2001-09-18 false eng false sedgrabs.dbf 2018-04-11 publication NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information distributor https://ocmgeodatastor1.blob.core.windows.net/benthic-data/Benthic/Grab_Sample_Data/ME_Wells_sedgrabs.zip WWW:LINK-1.0-http--link https://ocmgeodatastor1.blob.core.windows.net/benthic-data/Benthic/Grab_Sample_Data/ME_Wells_sedgrabs.zip download dataset Accuracy Values were checked against hard copy data sheets provided by the analysis laboratory. Horizontal Positional Accuracy 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. Vertical Positional Accuracy Not relevant to the data set. Completeness Report 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. Conceptual Consistency All data are believed to be logically consistent. 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 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 Source Contribution: 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 Wells Reserve Sediment Survey, September 2001 Virginia Institute of Marine ScienceWells National Estuarine Research Reserve 2001-09-11 2001-09-18