國家 | United States (contiguous states) | 生態系 | |
地點 | Penobscot Bay, Maine | Depth | |
描述 | Year Intro. | ||
生活階段 | larvae | unsexed | |
Quantitative | 0 | Unit | numbers/m3 |
Semi Quantitative | 0 | Unit | numbers/m3 |
Qualitative | absent | ||
年代 | 1998 - 1998 | 時期 | 1975-2000 |
日期 | 18/03/98 - 30/04/98 | Record Type | field sample |
Record Type | field sample | ||
Seasonal | not specified | 方法 | swept area |
附註 | Four one- or two-day cruises were conducted twice a week. A 1.0 m 333-micron mesh plankton net equipped with a General Oceanics flowmeter during daylight hours was utilized. It was hauled for 20 minutes in stepped oblique fashion at the surface, at 10 m, and at 20 m or to within 5 m of the bottom. |