Habitat Mapping Cruise - Tunicates (HB0806, EK60)
Objectives: Use otter trawls (if available), beam trawls (if not), Naturalist Dredge, SEABOSS photography/bottom grab equipment, CTDs, and large (10-30 liter) Niskin water bottles and ship’s ADCP to conduct the following operations: 1) determine changes in distribution and condition of invasive colonial tunicate Didemnum vexillum on northern Georges Bank gravel habitat, and also northeast of Great South Channel; 2) document the influence other ecosystem components, substrates, hydrology, and disturbances, including fishing disturbances on tunicate-benthic/demersal stock interactions; 3) collect tunicate specimens for further study including DNA analysis, and collect near-bottom water samples in tunicate areas; 4) explore the function of a newly-discovered benthic/demersal community not influenced by trawling or tunicate colonization, 5) continue monitoring recovery and productivity of untrawled gravel habitats in HAPC on northeastern Georges Bank, as compared to nearby trawled habitats; also, time permitting, and 6) re-occupy existing stations and sample new stations on a transect from the northeast corner of NLCA to outside the eastern boundary of NLCA.
Resources
3 resources available
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Water Column Sonar Data Map Viewer
TEXT/HTML -
Global Change Master Directory (GCMD) Keywords
TEXT/HTML -
International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)
TEXT/HTML
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{ "fn": "NEFSC", "@type": "vcard:Contact", "hasEmail": "mailto:vincent.guida@noaa.gov" } |
| describedByType | application/octet-steam |
| description | Objectives: Use otter trawls (if available), beam trawls (if not), Naturalist Dredge, SEABOSS photography/bottom grab equipment, CTDs, and large (10-30 liter) Niskin water bottles and ship’s ADCP to conduct the following operations: 1) determine changes in distribution and condition of invasive colonial tunicate Didemnum vexillum on northern Georges Bank gravel habitat, and also northeast of Great South Channel; 2) document the influence other ecosystem components, substrates, hydrology, and disturbances, including fishing disturbances on tunicate-benthic/demersal stock interactions; 3) collect tunicate specimens for further study including DNA analysis, and collect near-bottom water samples in tunicate areas; 4) explore the function of a newly-discovered benthic/demersal community not influenced by trawling or tunicate colonization, 5) continue monitoring recovery and productivity of untrawled gravel habitats in HAPC on northeastern Georges Bank, as compared to nearby trawled habitats; also, time permitting, and 6) re-occupy existing stations and sample new stations on a transect from the northeast corner of NLCA to outside the eastern boundary of NLCA. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Water Column Sonar Data Map Viewer", "accessURL": "http://maps.ngdc.noaa.gov/viewers/water_column_sonar/", "mediaType": "text/html", "description": "Interactive map viewer to allow discovery and access to water column sonar data", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "Global Change Master Directory (GCMD) Keywords", "accessURL": "https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords", "mediaType": "text/html", "description": "The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23)", "accessURL": "https://iho.int/", "mediaType": "text/html", "description": "Publication of Sea Areas is maintained by IHO.", "describedByType": "application/octet-stream" } ] |
| identifier | https://data.noaa.gov/waf/NOAA/NESDIS/NGDC/MGG/Sonar_Water_Column/iso/xml/HB0806_EK60.xml |
| issued | 2008-08-08T00:00:00.000+00:00 |
| keyword |
[ "Earth Science > Oceans > Ocean Acoustics > Acoustic Scattering", "Earth Science > Oceans > Aquatic Sciences > Fisheries", "Earth Science > Oceans > Ocean Acoustics", "Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Pelagic", "Earth Science > Biosphere > Ecosystems > Marine Ecosystems", "Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Benthic", "Earth Science > Biosphere > Ecosystems > Aquatic Ecosystems", "Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry", "Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography", "North Atlantic Ocean", "GEOGRAPHIC REGION > GLOBAL", "Vertical Location > VERTICAL LOCATION > SEA FLOOR", "In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System", "DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce", "DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce", "DOC/NOAA/NMFS > National Marine Fisheries Service, NOAA, U.S. Department of Commerce" ] |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2008-08-08T00:00:00.000+00:00 |
| publisher |
{ "name": "NOAA National Centers for Environmental Information", "@type": "org:Organization" } |
| rights | otherRestrictions, otherRestrictions |
| spatial | -67.1413664333,39.27613,-72.4870258746,42.131197327 |
| temporal | 2008-08-08T22:14:23+00:00/2008-08-25T13:36:11+00:00 |
| theme |
[ "geospatial" ] |
| title | Habitat Mapping Cruise - Tunicates (HB0806, EK60) |
