NMFS Office of Science & Technology   |   Marine Ecosystems Division   <-- back to previous page -- Sampling Metadata   <-  Tridente III (Data Summary)   <-  COPEPOD: The Global Plankton Database     SAMPLING METADATA Sampling and Processing Summary SAMPLING METHOD:   A Hensen-type "Kitahara" net (No. 13, ~110 um) with a mouth opening of 22.5 cm (diameter) was towed from a depth up to 150 meters to the surface. Samples were left to settle for 'several hours' before measurement. Samples were preserved in 10% formalin prior to phytoplankton analysis. A flowmeter was used to measure the volume of water strained through the net [but this value was not provided in any of the data tables]. Sampling Gear Net Mesh Tow Method ( depth range ) # of Tow % of all Tows Kitahara(n) Net 112 um vertical down-to ~50 m 6 16.2 % Kitahara(n) Net 112 um vertical down-to ~100 m 31 83.8 %     TOTAL TOWS 37   Sub-Collection:   Tridente III COPEPOD https://www.st.nmfs.noaa.gov/copepod Web v14.1   [ 2019-Jan ]