| Country | Alaska | Ecosystem | Chukchi Sea |
| Locality | Statoil study area, northeastern Chukchi Sea | Depth | |
| Introduced | Year Intro. | ||
| Life Stage | not specified | unsexed | |
| Quantitative | 0.36 | Unit | numbers/km^2 |
| Semi Quantitative | <100 | Unit | numbers/km^2 |
| Qualitative | rare | ||
| Year | 2010 - 2010 | Period | 2001-present |
| Date | 2010-08-03 00:00:00 - 2010-10-08 00:00:00 | Record Type | survey |
| Record Type | survey | ||
| Seasonal | yes | Method | line transects |
| Remarks | Data from reference was extracted using WebPlotDigitizer. The quantitative value is the average of reported density values of Rissa tridactyla during the research cruises throughout the study period, from August 3 to September 19 and October 1 to October 8, during open water season. The seabird survey was conducted following survey lines aligned from north to south spaced 2 NM apart. Rissa tridactyla were described as occurring in all study areas, but in low densities (Ref 118567). | ||