Dataset

DATRAS Canadian Maritimes Trawl Survey

EurOBIS MeasurementOrFact Open in mapper Explore occurrences

The Fisheries and Oceans Canada ecosystem surveys are conducted annually and are a source of integrated ecosystem monitoring data. These survey data are the primary data source for monitoring trends in species distribution, abundance, and biological condition within the region, and also provide data to the Atlantic Zonal Monitoring Program (AZMP) for monitoring hydrographic conditions, along with zooplankton and phytoplankton. The surveys follow a stratified random sampling design, and include sampling using a bottom otter trawl, CTD rosette and vertical plankton tows. Data from the bottom trawl catch are used to monitor the distribution and abundance of fish and invertebrates throughout the Scotian Shelf, Bay of Fundy and Georges Bank.

Citation: International Council for the Exploration of the Sea (ICES), Denmark; (2023): DATRAS Canadian Maritimes Trawl Survey (CAN-MAR). 

Published: September 17, 2025 at 10:11

URL: https://ipt.vliz.be/eurobis/resource?r=ices_datras_canmar

International Council for the Exploration of the Sea
International Council for the Exploration of the Sea

1,031,032
occurrence records
254,106
measurements and facts
418
taxa
299
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 1,031,032
100.0%
maximumDepthInMeters 316
0.0%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
DEPTH_EXCEEDS_BATH 673
0.1%

Measurement types

DNA derived data