Dataset

Maritimes Spring Research Vessel Surveys

OBIS Canada MeasurementOrFact Open in mapper Explore occurrences

The Fisheries and Oceans Canada (DFO) ecosystem surveys consist of research vessel survey data collected to monitor the distribution and abundance of fish and invertebrates throughout the Scotian Shelf, Bay of Fundy and Georges Bank. The surveys follow a stratified random sampling design, and include sampling of fish and invertebrates using a bottom otter trawl. 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 variability. Collected data includes total catch in numbers and weights by species. Length frequency data is available for most species, as are the age, sex, maturity and weight information for a subset of the individual animals. Other data such as ageing material, genetic material, and stomach contents are often also collected, but are stored elsewhere. “Spring” cruises occur in January, February, March and April, and focus on Georges Bank (i.e. 5Z).

Citation: Regnier-McKellar C (2021): Maritimes Spring Research Vessel Surveys. v1.2. Fisheries and Oceans Canada. Dataset/Samplingevent. http://ipt.iobis.org/obiscanada/resource?r=maritimes_spring_rv_surveys&v=1.2

Published: March 23, 2022 at 20:56

URL: http://ipt.iobis.org/obiscanada/resource?r=maritimes_spring_rv_surveys

Catriona Regnier-McKellar
Fisheries and Oceans Canada

650,166
occurrence records
1,548,645
measurements and facts
448
taxa
273
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 650,166
100.0%
maximumDepthInMeters 650,166
100.0%
minimumDepthInMeters 650,166
100.0%
scientificNameID 34
0.0%

Quality flags

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

Flag Dropped Records
NO_DEPTH 650,166
100.0%
NO_ACCEPTED_NAME 34
0.0%
NO_MATCH 34
0.0%
WORMS_ANNOTATION_UNRESOLVABLE 34
0.0%

Measurement types

DNA derived data