USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 2005-008-FA

Other ID: DE0511

Status: Completed

Organization(s): USGS, Woods Hole Coastal and Marine Science Center

Funding Program(s):

Principal Investigator(s): Page Valentine

Affiliate Investigator(s): Robert Reid, NOAA Fisheries; Jeremy Collie, URI

Information Specialist(s): Page Valentine

Data Type(s): Environmental Data: CTD, Imagery: Photo, Imagery: Video, Sampling: Biology, Sampling: Geology

Scientific Purpose/Goals: Benthic habitat studies and sea floor mapping.


Start Date: 2005-08-22

Start Port/Location: Woods Hole, MA

End Date: 2005-09-02

End Port/Location: Woods Hole, MA

Equipment Used: Trawl, Dredge, CTD, ARGO, Digital camera

Information to be Derived: Grain size analysis; Habitat maps;

Summary of Activity and Data Gathered: USGS SEABOSS video/photo transects: 133 stations; URI beam trawl: 11 stations; NMFS otter trawl: 6 stations; URI Naturalist dredge: 21 stations; NMFS CTD profiles: 16 stations.

Staff: Dann Blackwood, Erin Heffron, Page Valentine

Affiliate Staff:
Robert Reid
and colleagues; Jeremy Collie
and students

Notes: Mobilize in Woods Hole on Friday, Aug. 19, 2005; demobilize in Woods Hole on Friday, Sep. 2, 2005.
Project = Georges Bank Habitats, Georges Bank Habitats


Georges Bank, United States, Canada, North America, North Atlantic;

North: 42.13 South: 41.66 West: -67.55 East: -66.5


photo of Delaware II
Delaware II


Lengyel, N.L., Collie, Jeremy S., and Valentine, Page C., 2009, The invasive colonial ascidian Didemnum vexillum on Georges Bank - ecological effects and genetic identification: Aquatic Invasions, v. 4 no. 1, URL:

Valentine, P.C., Carman, Mary R., Dijksta, Jennifer, and Blackwood, Dann S., 2009, Larval recruitment of the invasive colonial ascidian Didemnum vexillum, seasonal water temperatures in New England coastal and offshore waters, and implications for spread of the species: Aquatic Invasions, v. 4 no. 1, URL:

Valentine, P.C., Collie, Jeremy S., Reid, Robert N., Asch, Rebecca G., Guida, Vince G., and Blackwood, Dann S., 2007, The occurrence of the colonial ascidian Didemnum sp. on Georges Bank gravel habitat - ecological observations and potential effects on groundfish and scallop fisheries: Journal of Experimental Marine Biology and Ecology, v. 342 no. 1, doi: 10.1016/j.jembe.2006.10.038.


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Trawl --- Biology
Dredge --- Biology
ARGO --- Photo
Digital camera --- Photo
2005-008-FA-PH-002 ( Deck photos of field activity operations)