| 国家 | United States (contiguous states) | 生态系 | |
| 地点 | Penobscot Bay, Maine | Depth | |
| 描述 | Year Intro. | ||
| 生活阶段 | larvae | unsexed | |
| Quantitative | 0.00072 | Unit | numbers/m3 |
| Semi Quantitative | <100 | Unit | numbers/m3 |
| Qualitative | common | ||
| 年代 | 1998 - 1998 | 时期 | 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 |
| 附注 | 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. | ||