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SAMPLING METADATA

Sampling and Processing Summary
This is zooplankton biomass data from the IMR Norwegian Sea survey, made in April-June during the years 1995 to 2005. It is total dry mass (sum of all sizes) and also biomass of individual size fractions (180+, 1000+ and 2000+ microns). From the 2000+ fraction, krill, shrimp and small fishes were selected and measured.

The majority of the samples are taken by WP2 nets from 200-0 m, but MOCNESS (nets) were used during some early years.


Sampling Gear Net Mesh Tow Method
( depth range )
# of Tow
% of all Tows
WP-2 (UNESCO Working Party 2) 180 um vertical
down-to ~50 m
4 0.4 %
WP-2 (UNESCO Working Party 2) 180 um vertical
down-to ~100 m
71 7.5 %
WP-2 (UNESCO Working Party 2) 180 um vertical
down-to ~250 m
866 91.1 %
WP-2 (UNESCO Working Party 2) 180 um vertical
down-to ~500 m
7 0.7 %
WP-2 (UNESCO Working Party 2) 180 um vertical
down-to ~1000 m
2 0.2 %
WP-2 (UNESCO Working Party 2) 180 um vertical
to-below 1000 m
1 0.1 %
  TOTAL TOWS 951 
Sub-Collection:   IMR Norwegian Sea Survey COPEPOD
https://www.st.nmfs.noaa.gov/copepod
Web v14.1   [ 2017-Sep ]