| Land | Portugal | Ekosystem | Iberian Coastal |
| Observationsplats | Matosinhos fishing port | Depth | |
| Införda | Year Intro. | ||
| Utvecklingsstadium | not specified | mixed | |
| Quantitative | 47 | Unit | number |
| Semi Quantitative | <100 | Unit | number |
| Qualitative | rare | ||
| År | 2001 - 2001 | Period | 2001-present |
| Datum | 01/01/01 - 31/12/01 | Record Type | field sample |
| Record Type | field sample | ||
| Seasonal | no | Metod | random sampling |
| Anmärkningar | Sampling comprised of: 1. selection of 10 fishing vessels with Rajidae landings; 2. random selection of at least three fish boxes per vessel; 3. identification of specimens in box. | ||