SPECIES IDENTIFICATION - DRY WEIGHT and Displacement Volume tows data collected in the South Atlantic Ocean and South Pacific Ocean on the NATHANIEL B. PALMER cruises NBP0103, NBP0104 and others as part of the Southern Ocean GLOBEC project from 2001-04-30 to 2002-09-11 (NODC Accession 0112163)

• Format: Dataset
• Language: unknown
• Published: NOAA NCEI Environmental Data Archive 2014
• Subjects: DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce; DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce; 0112163; 112163; SPECIES IDENTIFICATION - DRY WEIGHT; TOTAL DISPLACEMENT VOLUME; Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS); biological; tows; NATHANIEL B. PALMER; Woods Hole Oceanographic Institution; Biological and Chemical Oceanography Data Management Office; Southern Ocean GLOBEC (SO-GLOBEC); South Atlantic Ocean; South Pacific Ocean; oceanography; comments; cruiseid; day_local; depth_close; depth_interval; depth_mid; depth_open; depth_w; displ_vol; displ_vol_integ; dry_wgt; dry_wgt_integ; dry_wgt_total; event; lat; lon; month_local; net; region; station; station_std; time_local; tow; vol_filt; year; Southern Ocean; Austral; Pacific; Morton; Copepods
• Online Access: https://search.dataone.org/view/{AB74ECF4-F25A-4D88-A8B3-91C12E0E713D}

NODC Accession 0112163 includes tows and biological data collected aboard the NATHANIEL B. PALMER during cruises NBP0103, NBP0104, NBP0202 and NBP0204 in the South Atlantic Ocean and South Pacific Ocean from 2001-04-30 to 2002-09-11. These data include SPECIES IDENTIFICATION - DRY WEIGHT and Displacement Volume. The instruments used to collect these data include Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS). These data were collected by Peter Wiebe of Woods Hole Oceanographic Institution as part of Southern Ocean GLOBEC. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NODC on 2013-07-25. The following is the text of the abstract provided by BCO-DMO: Southern Ocean Biovolume Data from the MOCNESS tows during the Broadscale Cruises, Austral Autumn 2001 and 2002 NB Palmer This data set is derived from displacement volume measurements (http://globec.whoi.edu/globec-dir/data_doc/dvolmethod_globecweb.htm) and dry weight conversion calculations (#methods). The MOCNESS-1 plankton sampler has nine rectangular nets (1m x 1.4 m) with a mesh size of 0.333 mm, which are opened and closed sequentially by commands through conducting cable from the surface (Wiebe et al., 1976). Cruises: Nathaniel B. Palmer, April-June 2001 (NBP01-03), 24 tows, cruise report (http://globec.whoi.edu/jg/serv/globec/soglobec/inventory.html2{dir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/inventory}?project%20eq%20NBP0103,data_type%20eq%20cruise_report) Nathaniel B. Palmer, July-Sept. 2001 (NBP01-04), 17 tows, cruise report (http://globec.whoi.edu/jg/serv/globec/soglobec/inventory.html2{dir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/inventory}?project%20eq%20NBP0104,data_type%20eq%20cruise_report) Nathaniel B. Palmer, April-May 2002 (NBP02-02), 24 tows, cruise report (http://globec.whoi.edu/jg/serv/globec/soglobec/inventory.html2{dir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/inventory}?project%20eq%20NBP0202,data_type%20eq%20cruise_report) Nathaniel B. Palmer, July-Sept. 2002 (NBP02-04), 19 tows, cruise report (http://globec.whoi.edu/jg/serv/globec/soglobec/inventory.html2{dir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/inventory}?project%20eq%20NBP0204,data_type%20eq%20cruise_report) <a name="methods">Methods: 1Displacement volume measurement: Entire sample plus liquid was measured in a large graduated cylinder then poured through a sieve into a second cylinder. The difference in volume is the displacement volume. Detailed instructions are available here (http://globec.whoi.edu/globec-dir/data_doc/dvolmethod_globecweb.htm). 2Dry weight calculations: dry weight = (dvol/(100.139))(1/1.003); [mg/m3] integrated dry weight = depth interval * dry weight; [mg/m2] total dry weight for the entire sampled water column = sum of integrated dry weights for all nets for one tow; [mg/m2] This displacement volume data comes from nets with a mesh size of 333 mm. See companion files: - Zooplankton Biomass and Abundance from MOCNESS tows using silhouette analysis (http://globec.whoi.edu/jg/serv/globec/soglobec/zoo_moc.html0{dir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/zoo_moc}): NB Palmer, austral fall & winter of 2001 & 2002. Biomass (wet weight) and abundance were determined principally by silhouette digitization of taxa lengths and conversion to equivalent wet weights according to the equations and methods adapted from Davis and Wiebe (1985) and Wiebe et al. (2004). - Zooplankton Abundance Based on Taxa and Life Stages or Size (http://globec.whoi.edu/jg/serv/globec/soglobec/zooabund_nbp.html0{dir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/zooabund_nbp}) Collected during the Broadscale Cruises, Austral Autumn 2001 and 2002, NB Palmer. These abundance values on the same tows were derived by counting and identifying a subset of the zooplankton to the species and life stage for euphausiids and dominant copepods and to taxonomic group with broad size categories for other zooplankton (pteropod, chaetognath, polychaete, etc.). References: Wiebe, P.H., K.H. Burt, S. H. Boyd, A.W. Morton, 1976. The multiple opening/closing net and environmental sensing system for sampling zooplankton. Journal of Marine Research, 34(3): 313-326. Contact: Nancy Copley Woods Hole Oceanographic Institution Woods Hole, MA 02543 email: [e-mail] (mailto:[e-mail]) last updated: 16 Aug. 2006 (njc)