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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2004-027-FA

Other ID: none

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): Biological Field Study: Experiments, Biological Field Study: Surveys, Environmental Data: CTD, Imagery: Photo, Imagery: Video, Sampling: Biology, Sampling: Geology, Visual Identification: Species ID

Scientific Purpose/Goals: Habitat studies and mapping.


Start Port/Location: Woods Hole, MA

End Port/Location: Woods Hole, MA

Start Date: 2004-11-02

End Date: 2004-11-12

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

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

Summary of Activity and Data Gathered: Total geological stations: 50; 9 Van Veen sediment samples; 49 video transects; 50 photo sites. Total biological stations: 33 by NMFS and URI; 9 naturalist dredge samples; 24 otter trawl, beam trawl, and CTD stations.

Staff: Dann Blackwood, Erin Heffron, Page Valentine

Affiliate Staff:
Robert Reid (NOAA) and others; Jeremy Collie (URI) and others

Notes: Mobilization at NOAA Fisheries in Woods Hole on Friday, October 29, 2004. Demobe in Woods Hole on Friday, November 12 in the AM.
Project = Gulf of Maine habitats, Gulf of Maine habitats


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

North: 42.08167 South: 40.61333 West: -69.0433 East: -67.23667


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
SeaBOSS --- Experiments
Species ID
ARGO --- Photo
Digital camera --- Photo
2004-027-FA-PH-002 ( Deck photos of field activity operations)

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