ประเทศ | United States (contiguous states) | ระบบนิเวศ | |
ถิ่นที่อยู่ | Penobscot Bay, Maine | Depth | |
แนะนำ | Year Intro. | ||
ระยะของช่วงชีวิต | larvae | unsexed | |
Quantitative | 0.00002 | Unit | numbers/m3 |
Semi Quantitative | <100 | Unit | numbers/m3 |
Qualitative | rare | ||
ปี | 1997 - 1997 | ระยะเวลา | 1975-2000 |
วัน | 04/04/97 - 25/06/97 | Record Type | field sample |
Record Type | field sample | ||
Seasonal | not specified | วิธีการ | swept area |
ข้อสังเกต | Seven two- to three-day cruises were conducted twice a week to coincide with spring and summer spawning times for many fishes. 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. |