Country | Russian Federation | Ecosystem | White Sea |
Locality | Gorely Island | Depth | 8 m |
Introduced | Year Intro. | ||
Life Stage | adult | unsexed | |
Quantitative | 40.24 | Unit | numbers/m^2 |
Semi Quantitative | <100 | Unit | numbers/m^2 |
Qualitative | rare | ||
Year | 1998 - 1999 | Period | 1975-2000 |
Date | 1998-12-15 00:00:00 - 1999-01-15 00:00:00 | Record Type | survey |
Record Type | survey | ||
Seasonal | yes | Method | quadrats |
Remarks | Quantitative values were estimated from a figure using WebPlotDigitizer. Samples were taken at each station through a hole in the ice, by use of a Petersen grab. Sampling dates are estimated, described in the study as late December to early January. |