| Country | Alaska | Ecosystem | Chukchi Sea |
| Locality | Burger study area, northeastern Chukchi Sea | Depth | |
| Introduced | Year Intro. | ||
| Life Stage | not specified | unsexed | |
| Quantitative | 0.71 | Unit | numbers/km^2 |
| Semi Quantitative | <100 | Unit | numbers/km^2 |
| Qualitative | rare | ||
| Year | 2009 - 2009 | Period | 2001-present |
| Date | 2009-08-12 00:00:00 - 2009-10-17 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 12 to August 30 and September 4 to October 17, 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). | ||