Benthic Species Presence/Absence in the Lower Bay of Fundy Derived From High Resolution Video and Still Imagery

Benthic Species Presence/Absence in the Lower Bay of Fundy Derived From High Resolution Video and Still Imagery Funded through DFO's Strategic Program for Ecosystem-based Research and Advice (SPERA), this benthic survey covers several seabed areas adjacent to Deer Island and Campobello Island, the Wolves Islands, and Grand Manan (NB) over a two-year study period (2016-2017). One hundred and fifty drift camera transects were completed within the ~91 sq-km study region collecting continuous high-definition video with periodic 4K resolution video (provided by a downward facing Blackmagic Production Camera 4K equipped with video lights). A Nikon D800 36.1 megapixel digital still imagery camera (equipped with a studio strobe light) captured seafloor images at ~30s intervals over a maximum 25-minute drift survey period. The camera was triggered by lowering the camera frame within 1 m of the seabed, releasing tension on a trigger weight suspended below the frame. Camera location was tracked using an ultra-short baseline acoustic positioning system (Tracklink 1500HA transceiver with 1505B transponder on the camera frame). Species presence/absence, abundance, and bottom type was recorded manually using PhotoQuad v1.4 software. An average field of view of 0.7 x 0.5 m was determined from a subset of digital still images within which the 10 cm diameter trigger weight was fully in view. Thirty-eight key and common species were described using explicit taxonomic identifiers, while other species were recorded within broader general categories (e.g. unidentified Cnidaria). Identification was made to the lowest possible taxonomic level. Primary bottom-type was defined as the grain size with the most percent coverage for each image/video interval. Grain size limits were determined using the Wentworth scale. Cite this data as: Lawton P. Benthic Species Presence/Absence in the Lower Bay of Fundy Derived From High Resolution Video and Still Imagery. Published May 2022. Coastal Ecosystems Science Division, Fisheries and Oceans Canada, Dartmouth, N.S. 2023-07-11 Fisheries and Oceans Canada DFO.CESDDataRequest-DSECDemandededonnes.MPO@dfo-mpo.gc.ca Nature and EnvironmentOceansEnvironment Data DictionaryCSV https://pacgis01.dfo-mpo.gc.ca/FGPPublic/Benthic_Species_Presence_Absence_Lower_Bay_Fundy/DataDictionary/GISDataDictionary.csv Benthic Species Presence/Absence in the Lower Bay of Fundy Derived From High Resolution Video and Still ImageryESRI REST https://gisp.dfo-mpo.gc.ca/arcgis/rest/services/FGP/Benthic_species_presence_absence_in_the_lower_Bay_of_Fundy/MapServer Benthic Species Presence/Absence in the Lower Bay of Fundy Derived From High Resolution Video and Still ImageryESRI REST https://gisp.dfo-mpo.gc.ca/arcgis/rest/services/FGP/Presence_ou_absence_especes_benthiques_de_la_baie_de_Fundy/MapServer Benthic Species Presence/Absence in the Lower Bay of Fundy Derived From High Resolution Video and Still ImageryCSV https://pacgis01.dfo-mpo.gc.ca/FGPPublic/Benthic_Species_Presence_Absence_Lower_Bay_Fundy/Downloads/Spera_GIS.zip Benthic Species Presence/Absence in the Lower Bay of Fundy Derived From High Resolution Video and Still ImageryFGDB/GDB https://pacgis01.dfo-mpo.gc.ca/FGPPublic/Benthic_Species_Presence_Absence_Lower_Bay_Fundy/Downloads/Downloads.gdb.zip

Funded through DFO's Strategic Program for Ecosystem-based Research and Advice (SPERA), this benthic survey covers several seabed areas adjacent to Deer Island and Campobello Island, the Wolves Islands, and Grand Manan (NB) over a two-year study period (2016-2017). One hundred and fifty drift camera transects were completed within the ~91 sq-km study region collecting continuous high-definition video with periodic 4K resolution video (provided by a downward facing Blackmagic Production Camera 4K equipped with video lights). A Nikon D800 36.1 megapixel digital still imagery camera (equipped with a studio strobe light) captured seafloor images at ~30s intervals over a maximum 25-minute drift survey period. The camera was triggered by lowering the camera frame within 1 m of the seabed, releasing tension on a trigger weight suspended below the frame. Camera location was tracked using an ultra-short baseline acoustic positioning system (Tracklink 1500HA transceiver with 1505B transponder on the camera frame). Species presence/absence, abundance, and bottom type was recorded manually using PhotoQuad v1.4 software. An average field of view of 0.7 x 0.5 m was determined from a subset of digital still images within which the 10 cm diameter trigger weight was fully in view. Thirty-eight key and common species were described using explicit taxonomic identifiers, while other species were recorded within broader general categories (e.g. unidentified Cnidaria). Identification was made to the lowest possible taxonomic level. Primary bottom-type was defined as the grain size with the most percent coverage for each image/video interval. Grain size limits were determined using the Wentworth scale.

Cite this data as: Lawton P. Benthic Species Presence/Absence in the Lower Bay of Fundy Derived From High Resolution Video and Still Imagery. Published May 2022. Coastal Ecosystems Science Division, Fisheries and Oceans Canada, Dartmouth, N.S.

View on Map

Data and Resources

Geographic Information

Spatial Feature

Contact Information

Delivery Point: St. Andrews Biological Station, 125 Marine Science Drive

City: St. Andrews

Administrative Area: New Brunswick

Postal Code: E5B 0E4

Country: Canada

Electronic Mail Address: DFO.CESDDataRequest-DSECDemandededonnes.MPO@dfo-mpo.gc.ca

Similar records