<div><p><strong>Sampling and Analytical Methodology:</strong></p>
<p>These deployments followed the AZMP protocols (Mitchell et al. 2002) as a guideline. Using a 0.75 meter diameter SEA-GEAR Model 9600 twin ring, 200µm mesh net, two vertical casts were made to within 5 meters of the bottom at each station. Two replicate samples from separate casts were preserved in a 4% seawater-buffered formaldehyde solution. In the laboratory, all formalin preserved zooplankton samples were split in half using a Folsom Plankton Splitter. Half of the sample was archived for identification and enumeration of zooplankton, and the other half was processed for biomass determination. To estimate abundances the archival split was diluted and sub-sampled with a 5 mL Stempel pipette. Depending on abundance in the sample, multiple subsamples were taken until a target number of 75-150 <em>C. finmarchicus</em> copepodids were enumerated and staged and in addition at least 200 specimens in total were counted and identified to the lowest possible taxa.</p>
<p>Mitchell, M. R., G. Harrison, K. Pauley, A. Gagné, G. Maillet, and P. Strain. (2002) Atlantic Zonal Monitoring Program Sampling Protocol. Canadian Technical Report of Hydrography and Ocean Sciences 223.</p></div>
Zooplankton species abundance from ring nets at two times series stations in the Gulf of Maine - 2012-2013
<div><p>Abundance of zooplankton species caught in 200 micron vertically-towed ring nets at two time series stations in the Gulf of Maine (2012-2013). </p>
<p>These data are presented in two views: This one has species abundance as columns with each species as its own column header. <a href="http://dmoserv3.bco-dmo.org/jg/serv/BCO-DMO/GoM_Calanus_2012-2013/Zoop_GoM_rs.html0%7Bdir=dmoserv3.whoi.edu/jg/dir/BCO-DMO/GoM_Calanus_2012-2013/,info=dmoserv3.bco-dmo.org/jg/info/BCO-DMO/GoM_Calanus_2012-2013/WBTS_Zoop%7D" target="_blank"> This one</a> is levelized with the species as rows.</p>
<p>Incorporated into the species names in both cases are the life stages according to this scheme:<br />
CI: Copepodid stage 1<br />
CII: Copepodid stage 2<br />
CIII: Copepodid stage 3<br />
CIV: Copepodid stage 4<br />
CV: Copepodid stage 5<br />
F: Adult Female<br />
M: Adult Male<br />
N: Nauplii<br />
C: Copepodids<br />
LA: Larvae<br />
BalanusC = Cyprid<br />
VEL: Veliger<br />
AD: Adult<br />
EGG: Egg<br />
FU: Furcilia<br />
CA: Calyptopsis<br />
Z: Zoea<br />
MN: Metanauplius</p>
<p><strong>DMO Notes:</strong><br />
Latitude and longitude of stations added<br />
Spaces and periods (not allowed in column headers) fixed.<br />
Added column for yrday_local to expand visualization possibilities.</p>
<p><strong>Access Restrictions:</strong></p>
<p>Users are requested to consult with Jeffrey Runge prior to preparation of any manuscripts or reports, either written or online, that make use of zooplankton and hydrographic data originating from this study. . The data are freely available without need for consultation with Dr. Runge after October, 2017.</p></div>
GoM WBTS 2012-2013 Zooplankton abundance Columnar View
<div><p><strong>Data Processing</strong>:</p>
<p>The counts were normalized to abundance (number m<sup>-2</sup>), taking into account the subsample dilution, the split, and volume sampled by the net at the station. Because of unreliable flowmeter readings we calculated volume filtered by the net from net area and net depth. The filtered volume calculated geometrically, as we have done here, is closely related to the flowmeter volume when flowmeters were working properly.</p>
<p>Volume = Net Depth * Net Area</p>
<p>Abundance (number m<sup>-2</sup>) = ( (count*Dilution Factor / Archival split) / Volume) *Station Depth</p>
<p> </p></div>
551937
GoM WBTS 2012-2013 Zooplankton abundance Columnar View
2015-02-24T13:59:27-05:00
2015-02-24T13:59:27-05:00
2023-07-07T16:10:26-04:00
urn:bcodmo:dataset:551937
Zooplankton species abundance in columnar view from ring nets at two times series stations from R/V Gulf Challenger in the Gulf of Maine; Wilkinson Basin and Jeffreys Ledge, 2012-2013 (GoM_Calanus_2012-2013 project)
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Runge, J. A. (2015) Zooplankton species abundance in columnar view from ring nets at two times series stations from R/V Gulf Challenger in the Gulf of Maine; Wilkinson Basin and Jeffreys Ledge, 2012-2013 (GoM_Calanus_2012-2013 project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version working) Version Date 2015-02-24 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/551937 [access date]
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2015-02-24
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