NMFS Office of Science & Technology   |   Marine Ecosystems Division   <-- back to previous page -- Sampling Metadata   <-  STOR Expedition (Data Summary)   <-  COPEPOD: The Global Plankton Database     SAMPLING METADATA Sampling and Processing Summary For zooplankton biomass (displacement volumes), either a "non-closing net" and "modified Clarke-Bumpus" net were used. The "non-closing net" was the (1958-1959) standard CalCOFI net, with a mouth diameter of one meter. The main body of the net was made of 30XXX grit gauze (nominally 0.55 mm square mesh) with a rear section and cod-end of 56XXX grit gauze (nominally 0.25 mm square mesh). A flowmeter was mounted in the center of the mouth of each net. The Clarke-Bumpus net had a mouth diameter of 25 cm. The body of the net was made of 706 Nitex with a 316 Nitex cod-end. Sampling Gear Net Mesh Tow Method ( depth range ) # of Tow % of all Tows Clarke-Bumpus Sampler 316 um horizontal "surface" 1 0.4 % Clarke-Bumpus Sampler 316 um layered down-to ~50 m 6 2.5 % Clarke-Bumpus Sampler 316 um layered down-to ~100 m 26 11.0 % Clarke-Bumpus Sampler 316 um layered down-to ~250 m 4 1.7 % Clarke-Bumpus Sampler 316 um layered down-to ~500 m 1 0.4 % Non-Closing Net (SCOT/STOR) 505 um horizontal "surface" 42 17.7 % Non-Closing Net (SCOT/STOR) 505 um oblique under ~25 m 1 0.4 % Non-Closing Net (SCOT/STOR) 505 um oblique down-to ~50 m 19 8.0 % Non-Closing Net (SCOT/STOR) 505 um oblique down-to ~100 m 66 27.8 % Non-Closing Net (SCOT/STOR) 505 um oblique down-to ~250 m 70 29.5 % Non-Closing Net (SCOT/STOR) 505 um layered down-to ~100 m 1 0.4 %     TOTAL TOWS 237   Sub-Collection:   STOR Expedition COPEPOD https://www.st.nmfs.noaa.gov/copepod Web v14.1   [ 2017-Sep ]