NMFS Office of Science & Technology   |   Marine Ecosystems Division   <-- back to previous page -- Sampling Metadata   <-  Koyo Maru - Brazil (Data Summary)   <-  COPEPOD: The Global Plankton Database     SAMPLING METADATA Sampling and Processing Summary Zooplankton were collected by NORPAC net with a GG54 mesh (~330 micrometers) and a flowmeter.   The tow was started at one meter from the bottom (via echosounder) and then hauled to the surface at a speed of 1 meter per second. Phytoplankton were collected with another NORPAC net with NXX-13 mesh (~100 micrometers).   The tow was started at ten meters depth and hauled to the surface at a speed of 50 cm/sec by hand.   All plankton samples (both types) were immediately preserved in 10% formalin and sorted upon return to Japan. Sampling Gear Net Mesh Tow Method ( depth range ) # of Tow % of all Tows NORPAC (North Pacific Standard Net) 100 um vertical down-to ~50 m 4 7.7 % NORPAC (North Pacific Standard Net) 100 um vertical down-to ~100 m 3 5.8 % NORPAC (North Pacific Standard Net) 100 um vertical down-to ~250 m 2 3.8 % NORPAC (North Pacific Standard Net) 330 um vertical down-to ~50 m 15 28.8 % NORPAC (North Pacific Standard Net) 330 um vertical down-to ~100 m 15 28.8 % NORPAC (North Pacific Standard Net) 330 um vertical down-to ~250 m 12 23.1 % NORPAC (North Pacific Standard Net) 330 um vertical down-to ~1000 m 1 1.9 %     TOTAL TOWS 52   Sub-Collection:   Koyo Maru - Brazil COPEPOD https://www.st.nmfs.noaa.gov/copepod Web v14.1   [ 2017-Sep ]