Dataset

CSIRO, Jack Mackerel (Trachurus declivis) surveys, Tasman Sea, Australia (1978)

OBIS Australia MeasurementOrFact Open in mapper Explore occurrences

The data were obtained from 3 surveys in the Tasman Sea (NSW and Victoria coasts) in 1978. Data were obtained from acoustic and trawl surveys of Jack mackerel (Trachurus declivis) and other demersal and pelagic fish. Length, sex, numbers, weight and target signal strength were determined. This data has been republished (2022-09-05 with additional details of each occurrence where they can be one of three types: catch composition (counts per taxa and optional aggregated weights by trawl event), catch measurements (length and/or weight) of individual taxa and/or catch specimens and their stored location. The occurrence type is recorded in occurrenceremarks.

Citation: CSIRO Oceans and Atmosphere (2023): CSIRO, Jack Mackerel (Trachurus declivis) surveys, Tasman Sea, Australia (1978). v1.12. CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC). Dataset/Samplingevent. https://www.marine.csiro.au/ipt/resource?r=csiro_jack_mackeral_1975_1978&v=1.12

Published: June 28, 2023 at 03:39

URL: https://www.marine.csiro.au/ipt/resource?r=csiro_jack_mackeral_1975_1978

2,086
occurrence records
3,520
measurements and facts
104
taxa
94
species

Taxa

Missing and invalid fields

Field Missing Invalid
decimalLongitude 12
0.6%
maximumDepthInMeters 42
2.0%
minimumDepthInMeters 42
2.0%

Quality flags

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

Flag Dropped Records
NO_DEPTH 42
2.0%
NO_ACCEPTED_NAME 32
1.5%
NO_COORD 12
0.6%

Measurement types

DNA derived data