SAMPLING METHODS SUMMARY
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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 METHODS ( depth range )	# of TOWS	% 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

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Sub-Collection:   IMR Norwegian Sea Survey

NMFS-COPEPOD http://www.st.nmfs.noaa.gov/plankton Web v7.1   [ 2008-Oct ]