<div><p>Surface (bucket) and 20-m (Niskin bottle) water samples were taken once at each station for later nutrient and chlorophyll analysis.</p>
<p>One shallow vertical haul (20-m) was made at each station (except three at ABM) with a 50-cm, 243-micron mesh NORPAC net. One deep vertical haul (to 200 m or within 10 m of bottom) was made at ABM and the Icy Point stations with a 57-cm, 202-micron mesh WP-2 net.</p>
<p>One double oblique bongo haul was made at stations along the Icy Strait and Lower Clarence Strait transects and at ABM to a depth of 200 m or within 20 m of the bottom, using a 60-cm diameter tandem frame with 505-micron and 333-micron mesh nets. A VEMCO ML-08-TDR time-depth recorder was used with the oblique bongo hauls to record the maximum sampling depth of each haul. General Oceanics model 2031 or Rigosha flow meters were placed inside the bongo and deep conical nets for calculation of filtered water volumes.</p>
<p><strong>Zooplankton sampling:</strong> Zooplankton samples were concentrated and preserved in a 5% formalin-seawater solution. Zooplankton settled volumes (ZSV, ml) and total settled volumes (TSV, ml) of each 20-m vertical haul were measured after settling the samples for a 24-hr period in Imhof cones. Displacement volumes (DV, ml) of zooplankton were measured for bongo net samples (333-micron and 505-micron mesh). Samples were brought to a constant volume (500 ml) by adding water, and then were sieved through 243-micron mesh to separate the zooplankton from the liquid. The volume of decanted liquid was measured and subtracted from the sample starting volume to yield zooplankton DV.</p>
<p><b>Station Codes:</b></p>
<table cellspacing="0" cellpadding="0" border="1"><colgroup><col width="102" /><col width="143" /></colgroup><tbody><tr height="17"><td width="102" height="17">station</td>
<td width="143">locality</td>
</tr><tr height="17"><td height="17">ABM</td>
<td>Auke Bay Monitor</td>
</tr><tr height="17"><td height="17">CS A-D</td>
<td>Cross Sound</td>
</tr><tr height="17"><td height="17">ED A-D</td>
<td>Cape Edward</td>
</tr><tr height="17"><td height="17">FPR</td>
<td>False Point Retreat</td>
</tr><tr height="17"><td height="17">IP A-D</td>
<td>Icy Point</td>
</tr><tr height="17"><td height="17">IS A-D</td>
<td>Icy Strait</td>
</tr><tr height="17"><td height="17">LC A-D</td>
<td>Lower Clarence</td>
</tr><tr height="17"><td height="17">LFC</td>
<td>Lower Favorite Channel</td>
</tr><tr height="17"><td height="17">MC A-D</td>
<td>Middle Clarence</td>
</tr><tr height="17"><td height="17">TK G-I</td>
<td>Taku Inlet transect</td>
</tr><tr height="17"><td height="17">UC A-D</td>
<td>Upper Chatham Strait</td>
</tr></tbody></table></div>
Zooplankton counts for the Southeast Alaska Coastal Monitoring
<div><p>Zooplankton counts from net tows taken in conjunction with juvenile salmon studies in the Gulf of Alaska from 1997-2006 by the Southeast Coastal Monitoring Project. Measurements include settling volume, displacement volume, composition of taxa.</p>
<p>important links:<br /><a href="http://www.afsc.noaa.gov/ABL/MSI/msi_secm.htm">http://www.afsc.noaa.gov/ABL/MSI/msi_secm.htm</a></p>
<p>Also see related SECM datasets: <br /><a href="http://globec.whoi.edu/jg/serv/globec/nep/cgoa/ltop/secm_stations.html0%7Bdir=globec.whoi.edu/jg/dir/globec/nep/cgoa/ltop/,info=globec.whoi.edu/jg/info/globec/nep/cgoa/ltop/secm_stations%7D" target="_blank">station data</a><br /><a href="http://globec.whoi.edu/jg/serv/globec/nep/cgoa/ltop/secm_nuts.html0%7Bdir=globec.whoi.edu/jg/dir/globec/nep/cgoa/ltop/,info=globec.whoi.edu/jg/info/globec/nep/cgoa/ltop/secm_nuts%7D" target="_blank">nutrients</a><br /><a href="http://globec.whoi.edu/jg/serv/globec/nep/cgoa/ltop/secm_ctd.html0%7Bdir=globec.whoi.edu/jg/dir/globec/nep/cgoa/ltop/,info=globec.whoi.edu/jg/info/globec/nep/cgoa/ltop/secm_ctd%7D" target="_blank">ctd</a><br /><a href="http://globec.whoi.edu/jg/serv/globec/nep/cgoa/ltop/secm_fishcatch.html2%7Bdir=globec.whoi.edu/jg/dir/globec/nep/cgoa/ltop/,info=globec.whoi.edu:80/jg/info/globec/nep/cgoa/ltop/secm_fishcatch%7D?cruise_id%20eq%20jc971x" target="_blank">fish catch data</a><br /><a href="http://globec.whoi.edu/jg/serv/globec/nep/cgoa/ltop/secm_fish_size_prey.html0%7Bdir=globec.whoi.edu/jg/dir/globec/nep/cgoa/ltop/,info=globec.whoi.edu/jg/info/globec/nep/cgoa/ltop/secm_fish_size_prey%7D" target="_blank">fish length and stomach contents</a></p></div>
SECM_zoop
<div><p>Detailed zooplankton species composition was determined microscopically from subsamples obtained using a Folsom or Motoda splitter. Density was then estimated by multiplying the count in the subsample by the split fraction and dividing the expanded count by the volume filtered. Percent total composition was summarized by major taxa for region, habitat, and month. Species were pooled into taxonomic groups including small calanoid copepods (< 2.5 mm TL), large calanoid copepods (> 2.5 mm TL), barnacle larvae, euphausiids (principally larval and juvenile stages), oikopleurans (Larvacea), decapod (crab) larvae, amphipods (hyperiid and gammarid), gastropods (primarily pteropods), chaetognaths, and combined minor taxa.</p>
<p>Use constraints: User must read and fully comprehend the metadata prior to use. User must acknowledge the Originator when using the data set as a source. User must share data products developed using the source data set with the Originator. Data should not be used beyond the limits fo the source scale.</p>
<p>01 Oct 2012 - BCO-DMO separated original 'taxon' column into taxon, species, stage, and common_name.</p></div>
3301
SECM_zoop
2010-06-16T16:40:40-04:00
2010-06-16T16:40:40-04:00
2023-07-07T16:10:26-04:00
urn:bcodmo:dataset:3301
Zooplankton counts for the Southeast Alaska Coastal Monitoring from R/V John N. Cobb SECM multiple cruises in the Gulf of Alaska, Coastal Southeast Alaska from 1997-2006 (NEP project)
false
Fergusson, E. A., Sturdevant, M. V., Orsi, J. A., Wertheimer, A. C., Orsi, J. A., Wertheimer, A. C. (2010) Zooplankton counts for the Southeast Alaska Coastal Monitoring from R/V John N. Cobb SECM multiple cruises in the Gulf of Alaska, Coastal Southeast Alaska from 1997-2006 (NEP project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2010-02-18) Version Date 2010-02-18 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/3301 [access date]
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2010-02-18
false
2010-02-18
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