<div><p>Zooplankton abundance, vertical and horizontal distribution, and population structure were assessed using a 1 m^2 Multiple Opening and Closing Nets and Environmental Sampling System (MOCNESS) with nine nets having 333 um mesh and environmental sensors of temperature, salinity and depth. The entire water column was sampled on the downcast using net # 0, which was not analyzed here. The water column was typically sampled from close to the bottom at stations on the shelf where depths were less than 1000 m, or to 1000m at stations off the shelf where depths were often from 3000 to 4000 m. Nets 1 through 8 sampled from various depth intervals to the surface with smaller strata near the surface. Several tows targeted krill swarms by towing in a single strata. Approximate locations of broadscale study stations are shown in Figs. 1-4, below.</p>
<p>Zooplankton samples were immediately preserved in 5% buffered formalin solution. In 2006, the samples were sent to the Atlantic Reference Centre, Huntsman Marine Science Centre, St. Andrews, New Brunswick, Canada to be sorted. All the large organisms (>15 mm) in the sample were removed and identified to taxa. The sample was then split to about 100 individuals of euphausiids. All euphausiids in the split were identified to species and life history stage. Next, the sample was split to about 100 individuals of copepods. Copepods were identified to species and life history stage (female, male, copepodite V, or other copepodite). All other zooplankton in the split were identified to taxa and counted. For the Euchaetidae, we followed the designation of Park (1994) who ascribed the Antarctic species to the genus Paraeuchaeta. This data object ('zooabund_nbp') reports the counts of zooplankton per subsample/split by taxa and life stage or size class. The companion data object 'zooabund_lmg' reports similar for the MOCNESS samples collected on the L.M. Gould cruises and data object 'krill' reports the abundance of each euphausiid species by life stage and size class, also on the L. M. Gould.</p>
<p><strong>Displacement volume measurement:</strong><br />
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.</p>
<p>Greenwich Mean Time was local time + 4 hours.</p>
<p><a href="/objectserver/55121e774edf333a00654d04a73a4ef1/NBP0103_TowPositions.png?url=http%3A%2F%2Fglobec.whoi.edu%2Fimages%2FNBP0103_TowPositions.png&f=6462316630636163623133656332356131646363363035633561306533376231687474703a2f2f676c6f6265632e77686f692e6564752f696d616765732f4e4250303130335f546f77506f736974696f6e732e706e67"><img alt="NBP0103_TowPositions.png (48567 bytes)" src="https://datadocs.bco-dmo.org/static/globec.whoi.edu/images/NBP0103_TowPositions.png" style="height:425px; width:400px" /></a></p>
<p>Fig. 1. NBP-0103: Locations for the oblique MOCNESS tows taken in austral fall 2001 as part of the broad-scale survey (solid dots) and the horizontal tows taken in krill patches in Marguerite Bay (asterisks).</p>
<p><a href="/objectserver/ddc6453476f01866dfa92abc59141a01/NBP0104_TowPositions.png?url=http%3A%2F%2Fglobec.whoi.edu%2Fimages%2FNBP0104_TowPositions.png&f=6339363530393330356432626466393865626632326331656533353430616566687474703a2f2f676c6f6265632e77686f692e6564752f696d616765732f4e4250303130345f546f77506f736974696f6e732e706e67"><img alt="NBP0104_TowPositions.png (45120 bytes)" src="https://datadocs.bco-dmo.org/static/globec.whoi.edu/images/NBP0104_TowPositions.png" style="height:425px; width:400px" /></a></p>
<p>Fig. 2. NBP-0104: Locations for the oblique MOCNESS tows taken in austral winter 2001 as part of the broad-scale survey.</p>
<p><a href="/objectserver/76aba4104617059629eede946686721e/NBP0202_TowPositions.png?url=http%3A%2F%2Fglobec.whoi.edu%2Fimages%2FNBP0202_TowPositions.png&f=6537373836663561643330396531643435613736616437363663613964616663687474703a2f2f676c6f6265632e77686f692e6564752f696d616765732f4e4250303230325f546f77506f736974696f6e732e706e67"><img alt="NBP0202_TowPositions.png (46096 bytes)" src="https://datadocs.bco-dmo.org/static/globec.whoi.edu/images/NBP0202_TowPositions.png" style="height:425px; width:400px" /></a></p>
<p>Fig. 3. NBP-0202: Locations for the oblique MOCNESS tows taken in austral fall 2002 as part of the broad-scale survey.</p>
<p><a href="/objectserver/69731660c7c9ca22dbf557d2605c0f04/NBP0204_TowPositions.png?url=http%3A%2F%2Fglobec.whoi.edu%2Fimages%2FNBP0204_TowPositions.png&f=3062653563653662353264623338616663393166343933666562386537323339687474703a2f2f676c6f6265632e77686f692e6564752f696d616765732f4e4250303230345f546f77506f736974696f6e732e706e67"><img alt="NBP0204_TowPositions.png (45602 bytes)" src="https://datadocs.bco-dmo.org/static/globec.whoi.edu/images/NBP0204_TowPositions.png" style="height:425px; width:400px" /></a></p>
<p>Fig. 4. NBP-0204: Locations for the oblique MOCNESS tows taken in austral winter 2002 as part of the broad-scale survey.</p></div>
Zooplankton abundance + stages from MOCNESS nets, NBPalmer
<div><h3>Zooplankton Abundance Based on Taxa and Life Stages or Size Classes, Collected during the Broadscale <em>NB Palmer</em> Cruises, Austral Autumn 2001 and 2002</h3>
<p>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).<br />
Note: NBP0104 tows 1-11 used a 500 micron mesh for net 1 samples. Then it was moved to net 0 for the remainder of tows.</p>
<p><strong>Cruises:</strong><br />
Nathaniel B. Palmer, April-June 2001 (NBP01-03), 24 tows<br />
Nathaniel B. Palmer, July-Sept. 2001 (NBP01-04), 17 tows<br />
Nathaniel B. Palmer, April-May 2002 (NBP02-02), 24 tows<br />
Nathaniel B. Palmer, July-Sept. 2002 (NBP02-04), 19 tows</p>
<p><strong>Related datasets:</strong><br /><a href="http://globec.whoi.edu/jg/serv/globec/soglobec/mocness_biovols_rs.html0{dir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/mocness_biovols}">Zooplankton biovolume values from MOCNESS tows </a> - this data set is derived from displacement volume measurements and dry weight conversion calculations from the same set of samples as the above data. globec.whoi.edu/jg/serv/globec/soglobec/mocness_biovols_rs.html0</p>
<p><a href="http://globec.whoi.edu/jg/serv/globec/soglobec/zoo_moc.html0{dir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu:80/jg/info/globec/soglobec/zoo_moc}?">Zooplankton Abundance and biomass from MOCNESS nets using silhouette analysis</a><br />
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). globec.whoi.edu/jg/serv/globec/soglobec/zoo_moc.html0</p>
<p><strong>Contact Information:</strong><br />
Net sample collections: Carin Ashjian, Peter Wiebe, Nancy Copley, Phil Alatalo at Woods Hole Oceanographic Inst.</p>
<p>Sample Analyses: Atlantic Reference Centre (ARC, <a href="http://www.huntsmanmarine.ca/arc.shtml">www.huntsmanmarine.ca/arc.shtml</a>), located in St. Andrews, New Brunswick, Canada under the supervision of Dr. Gerhard Pohle.</p></div>
zooplankton abund and stages_nbp
2387
zooplankton abund and stages_nbp
2010-06-16T16:40:39-04:00
2010-06-16T16:40:39-04:00
2023-07-07T16:10:26-04:00
urn:bcodmo:dataset:2387
Zooplankton abundance and stages from MOCNESS nets from the RVIB Nathaniel B. Palmer from the Southern Ocean, 2001-2002 (SOGLOBEC project, Southern Ocean Krill project)
Zooplankton from MOCNESS nets were identified and the net sample displacement volume was measured from the RVIB Nathaniel B. Palmer, Southern Ocean, 2001-2002.
false
Ashjian, C., Wiebe, P. (2008) Zooplankton abundance and stages from MOCNESS nets from the RVIB Nathaniel B. Palmer from the Southern Ocean, 2001-2002 (SOGLOBEC project, Southern Ocean Krill project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2008-10-23 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.2387.1 [access date]
true
1
10.1575/1912/bco-dmo.2387.1
false
2008-10-23
Datapackage.json
Frictionless Data Package
https://www.bco-dmo.org/dataset/2387/datapackage.json
application/vnd.datapackage+json
PDF
https://www.bco-dmo.org/dataset/2387/Dataset_description.pdf
application/pdf
ISO 19115-2 (NOAA Profile)
https://www.bco-dmo.org/dataset/2387/iso
application/xml
http://www.isotc211.org/2005/gmd-noaa
Dublin Core
https://www.bco-dmo.org/dataset/2387/dublin-core
application/xml
http://purl.org/dc/elements/1.1/
2387
http://lod.bco-dmo.org/id/dataset/2387
2001-04-29 - 2002-09-11
2001-04-29
2001-04-29
---29
118
--04
2001
2002-09-11
2002-09-11
---11
253
--09
2002
OSPREY
http://www.opengis.net/def/crs/OGC/1.3/CRS84
<http://www.opengis.net/def/crs/OGC/1.3/CRS84> POLYGON((-75.603 -69.243, -65.529 -69.243, -65.529 -69.243, -65.529 -65.147, -75.603 -65.147, -75.603 -69.243))
-75.603
-69.243
-65.529
-65.147
-67.195000000000
-70.566000000000
VIEW TABLE
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_2387.htmlTable
text/html
SUBSET DATA
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_2387.html
text/html
CSV
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_2387.csv
text/csv
TSV
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_2387.tsv
text/tsv
GeoJSON
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_2387.geoJson
application/geo+json
MATLAB
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_2387.mat
text/x-matlab
netCDF
https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_2387.nc
application/x-netcdf