Larval fish at time series station Helgoland Roads, North Sea, in 2005
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For the larval surveys, a CalCOFI ring trawl with a 500 µm mesh net (aperture 100 cm, length 400 cm, equipped with a flow meter) was towed for 15 min from a research vessel. The...
针对幼体调查，本次作业采用网目为500 µm的CalCOFI环形拖网（CalCOFI Ring Trawl），其网口口径100 cm、网身长400 cm，且配备流量计，由科研调查船拖曳作业15分钟。该……
