Structure of krillbase
Krillbase has two seperate components: KRILLBASE-ABUNDANCE and KRILLBASE-LENGTH FREQUENCY, which are summarised below
| Attribute | KRILLBASE-ABUNDANCE | KRILLBASE-LENGTH FREQUENCY |
| Species | Euphausia superba (postlarvae)
and salps |
Euphausia superba (postlarvae) only |
| Type of data | Untargeted scientific net hauls,
Oblique or vertical hauls only |
All scientific nets, commercial fishery
data and predator diets |
| Coverage | Circumpolar | Circumpolar |
| Years | 1926-39, 1976-2004 | 1926-1939, 1976-2006 |
| Time of year | October-April inclusive | Year-round |
| Number of records | >12,000 net hauls | >1 million krill measurements |
| Database format | Excel files with metadata | Relational ACCESS database
(4 linked files) with metadata |
