NMFS Office of Science & Technology   |   Marine Ecosystems Division   <-- back to previous page -- Sampling Metadata   <-  Brodskii 1950 (Data Summary)   <-  COPEPOD: The Global Plankton Database     SAMPLING METADATA Sampling and Processing Summary Two types of net were used, described as: "A Nansen net with mesh No. 23 and a mouth diameter 50 cm", and "a K-100 net with No. 15 mesh and a mouth diameter 100 cm". A bolting silk translation of these net numbers would suggest mesh sizes of 65 micrometers and 94 micrometers. The original documentation says phytoplankton data were periodically taken with "a small Dzhedi (Juday?) net with No. 25 mesh", (64 micrometer). Sampling Gear Net Mesh Tow Method ( depth range ) # of Tow % of all Tows Nansen Net 65 um vertical down-to ~500 m 2 8.3 % Nansen Net 65 um vertical down-to ~1000 m 2 8.3 % Nansen Net 65 um vertical to-below 1000 m 8 33.3 % K-100 Net 94 um vertical down-to ~500 m 2 8.3 % K-100 Net 94 um vertical down-to ~1000 m 2 8.3 % K-100 Net 94 um vertical to-below 1000 m 8 33.3 %     TOTAL TOWS 24   Sub-Collection:   Brodskii 1950 COPEPOD https://www.st.nmfs.noaa.gov/copepod Web v14.1   [ 2017-Sep ]