EFFECTIVENESS OF THE RMT8 SYSTEM FOR SAMPLING KRILL (EUPHAUSIA-SUPERBA) SWARMS
EFFECTIVENESS OF THE RMT8 SYSTEM FOR SAMPLING KRILL (EUPHAUSIA-SUPERBA) SWARMS
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DOI：
10.1007/bf00258257
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发表时间：
1986-09-01
期刊：
影响因子：
1.7
通讯作者：
BONE, DG
中科院分区：
文献类型：
--
作者：
EVERSON, I;BONE, DG
通过使用回声测深仪观察网附近磷虾群的行为，研究了矩形中水拖网（RMT）对磷虾群取样的有效性。大规模回避是在白天而不是晚上观察到的。白天，磷虾层分散到网下 10 m 以下的范围内，几乎没有磷虾存在。夜间有限的回避表明磷虾正在根据网存在的视觉线索采取行动。
The effectiveness of the Rectangular Midwater Trawl (RMT) for sampling krill swarms was studied by observing the behaviour of swarms in the vicinity of the net using echosounders. Large scale avoidance was observed by day not at night. By day krill layers dispersed to such an extent that few krill were present less than 10 m below the net. Limited avoidance by night indicates that the krill are acting on visual clues of net''s presence.