Long-term Otter Trawl Survey is performed at various estuarine and inner continental shelf sites during July and September each year. Trawl used has a length of 4.9 m and 6 mm bar mesh at the cod end. Tows (n=3) are 2 minutes long. For each tow 20 individuals of each species are measured (fish - TL or FL, crabs - BW, sex is also noted) and the remainder are counted. Shrimp, hermit crabs and mud crabs are not counted.
Contacts
OBIS Secretariat
Intergovernmental Oceanographic Commission of UNESCO
| Field | Missing | Invalid | |
|---|---|---|---|
| coordinateUncertaintyInMeters | 517 |
|
|
| maximumDepthInMeters | 514 |
|
|
| minimumDepthInMeters | 246 |
|
|
| occurrenceStatus | 517 |
|
The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.
| Flag | Dropped | Records | |
|---|---|---|---|
| NO_DEPTH | 246 |
|
|
| NOT_MARINE | 2 |
|
|
| NO_ACCEPTED_NAME | 1 |
|