http://lod.bco-dmo.org/id/dataset/3010
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2010-06-16
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Zooplankton catch data from Tucker trawls from CGOA LTOP cruises from the Coastal Gulf of Alaska, Northeast Pacific, 2001-2003 (NEP project)
2009-02-20
publication
2009-02-20
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2020-01-16
publication
https://doi.org/10.1575/1912/bco-dmo.3010.1
National Oceanographic Data Center (NODC)
2013-12-23
publication
http://accession.nodc.noaa.gov/0115265
Edward D. Cokelet
National Oceanic and Atmospheric Administration
principalInvestigator
Kenneth O. Coyle
University of Alaska Fairbanks
principalInvestigator
Seth L. Danielson
University of Alaska Fairbanks
principalInvestigator
Edward V. Farley
National Oceanic and Atmospheric Administration - Alaska Fisheries Science Center
principalInvestigator
Jamal Hasan Moss
National Oceanic and Atmospheric Administration - Alaska Fisheries Science Center
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Cokelet, E., Coyle, K., Danielson, S., Farley, E., Moss, J. (2009) Zooplankton catch data from Tucker trawls from CGOA LTOP cruises from the Coastal Gulf of Alaska, Northeast Pacific, 2001-2003 (NEP project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2009-02-20 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.3010.1 [access date]
Zooplankton catch data from Tucker trawl from CGOA LTOP cruises, 2001-2003 Dataset Description: <p><strong>Zooplankton counts for tucker trawls in the Gulf of Alaska during 2001 - 2003</strong><br />
co-PI: Edward D. Cokelet (NOAA/OAR/PMEL)<br />
co-PI: Edward V. Farley (NOAA/NMFS)<br />
co-PI: Seth Danielson (IMS, U. Alaska - Fairbanks)<br />
co-PI: Ken Coyle (IMS, U. Alaska - Fairbanks)<br />
updated July 2008</p>
<p><a href="http://www.ims.uaf.edu/GLOBEC/" target="blank">Marine Ecosystem Monitoring in the Northern Gulf of Alaska </a>web site<br />
<a href="http://www.ims.uaf.edu/gak1/" target="blank">GAK1 Time Series</a> web site<br />
<a href="http://nepglobec.bco-dmo.org/reports/cgoa_cruises/cgoa_cr_rpts.html" target="blank">cruise reports</a> web site</p>
<p><strong>GLOBEC 2000: Gulf of Alaska Long-Term Observation Program</strong><br />
<em>T. Weingartner, L. Haldorson, R. Hopcroft, K. Coyle, T. E. Whitledge (all at University of Alaska, Fairbanks), T. Royer (Old Dominion University)</em></p>
<p>This project is to conduct the Gulf of Alaska Long-Term Observation Program (GOA-LTOP) as part of Phase II of the Northeast Pacific (NEP) GLOBEC program. The GOA shelf supports a rich ecosystem that includes many commercially important fisheries. The basis for this productivity is enigmatic for the GOA shelf is deep, forced by downwelling-favorable winds, and fed by a massive nutrient-poor coastal freshwater discharge. Both the winds and the freshwater discharge are intimately linked to the strength and position of the Aleutian Low. The GOA ecosystem experiences substantial physical and biological changes on decadal and interannual time scales. Although some of these changes are correlated with various climatic indices a mechanistic understanding of climate change and ecosystem response is unavailable. The generic goal of this LTOP is to understand and quantify temporal (seasonal and interannual) and spatial (cross- and along-shelf) variations in the thermohaline, chemical, and biological properties and relationships of this shelf. Our proposal supports GLOBEC goals that will help: 1) retrospective studies interpret historical data, 2) design a cost-effective long-term monitoring program, 3) provide the seasonal and interannual context for concurrent mesoscale and process studies, and 4) provide boundary conditions and data sets for model evaluation. This 5-year project entails 4 field years and a fifth year for data analyses and synthesis. The field effort involves seven, 9-day interdisciplinary cruises/year in the northern GOA. The study area encompasses the 220-km long, Seward Line (sampled in the 1970s) that extends across the shelf and slope and high resolution sampling of the Alaska Coastal Current (ACC), upstream, downstream, and within Prince William Sound. The ACC is an important shelf habitat for yoy salmon migrating from nursery areas in the sound and into the GOA. The sampling effort (Table A) is year-round and motivated by seasonally significant physical and biological events affecting yoy pink salmon.</p>
<p><strong><em>Table A. Sampling schedule and rationale for GOA-LTOP. (Key for Winds, Discharge and Stratification: S=strong; M=moderate; W=weak; D=downwelling winds; U=upwelling winds; V=variable; L=low; H=high) Deep water moves onshore during the July-August upwelling period.</em></strong></p>
<table border="1">
<tbody>
<tr>
<th colspan="1" rowspan="2">Month</th>
<th colspan="4" rowspan="1">Sampling</th>
<th colspan="3" rowspan="1">Physical Rationale</th>
<th colspan="1" rowspan="2">Biological Rationale</th>
</tr>
<tr>
<td>CTD</td>
<td>Nutrients</td>
<td>Zoo</td>
<td>Fish</td>
<td>Winds</td>
<td>Disch</td>
<td>Strat</td>
</tr>
<tr>
<td>March</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>&nbsp;</td>
<td>D S</td>
<td>L</td>
<td>W</td>
<td>Zooplankton migrate from depth (at shelfbreak); transported inshore.</td>
</tr>
<tr>
<td>April</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>&nbsp;</td>
<td>D M</td>
<td>L-M</td>
<td>W V</td>
<td>Phytoplankton bloom</td>
</tr>
<tr>
<td>May</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>&nbsp;</td>
<td>D M-W</td>
<td>M</td>
<td>M V</td>
<td>Maximum oceanic copepod biomass.</td>
</tr>
<tr>
<td>July</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>D/U W</td>
<td>M-H</td>
<td>S</td>
<td>Maximum zooplankton abundance; YOY salmon enter shelf.</td>
</tr>
<tr>
<td>August</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>D/U W</td>
<td>M-H</td>
<td>S</td>
<td>Maximum YOY salmon abundance on shelf.</td>
</tr>
<tr>
<td>October</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>D S</td>
<td>H</td>
<td>H</td>
<td>YOY salmon on shelf.</td>
</tr>
<tr>
<td>December</td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>&nbsp;</td>
<td>D S</td>
<td>M</td>
<td>M</td>
<td>Fall-winter pre-conditioning for spring nutrients, small zooplankton.</td>
</tr>
</tbody>
</table>
<p>&nbsp;</p>
<p>The sampling protocol follows GLOBEC guidelines and uses gear types and techniques similar to those in the Oregon LTOP that is also a part of the NEP-GLOBEC program. Most of the research will be conducted from the R/V <em>Alpha Helix</em>. Fish sampling will be done from a chartered trawler in July, August, and October. Both vessels will work together during these cruises so that the fishing charter can verify fish targets detected on the acoustics array towed from the <em>Alpha Helix</em>.</p>
<p>&nbsp;</p>
<hr />
<p><em>This page was last updated on September 22, 2000.<br />
<br />
Maintained by:<br />
<a href="mailto:hbatchelder@coas.oregonstate.edu">Hal Batchelder [hbatchelder@coas.oregonstate.edu</a><br />
College of Oceanic &amp; Atmospheric Sciences<br />
Oregon State University<br />
Corvallis, OR 97331-5503<br />
phone: 541-737-4500; FAX 541-737-2064 </em></p> Methods and Sampling: <p>The OCC/GLOBEC survey occurred along the coastal waters of the Gulf of Alaska and in Shelikof Strait, AK during 2001-2004. Transects sampled during the survey were perpendicular to shore and extended from nearshore across the continental shelf to oceanic waters beyond the 200-m shelf break. The survey was conducted aboard the contract fishing vessel F/V <em>Great Pacific</em> during 2001-2002 and 2004, and aboard NOAA Ship <em>Miller Freeman</em> during 2003.</p>
<p>Fish samples were collected in a 198-m long mid-water rope trawl with hexagonal mesh wings and body, and a 1.2-cm mesh liner in the codend. The rope trawl was towed at 6.5 to 9.3 km • hour-1, at or near surface, and had a typical spread of 40-m horizontally and 15-m vertically. All tows lasted 30 minutes and covered 2.8 to 4.6 km, and sampling was done during daylight hours; however, tows occurred during night as part of a 24-hour repeat sampling of a single station for one day during 2001 and 2003.</p>
<p>Once the net was hauled aboard, salmon and other fishes were sorted by species and counted. Standard biological measurements including fork length, body weight, and sex were taken from sub-samples of all salmon species. Sub-samples of juvenile pink (<em>Oncorhynchus gorbuscha</em>), chum (<em>O. keta</em>), and sockeye (<em>O. nerka</em>) salmon were frozen whole for laboratory analyses of food habits, otolith hatchery thermal marks (pink and chum salmon), and genetic analysis (chum salmon).</p>
<p>Plankton samples were collected using a 1-m2 Tucker trawl fitted with a 505-um mesh net that was towed near surface (approximately 1 knot) for 5 minutes (2001-2003 surveys). During 2004, plankton samples were collected using a WP-2 net fitted with a 253-um mesh net that was deployed vertically to a depth of 100-m depth. The volume of water filtered by the net was estimated using flow meters. Plankton samples were transferred into vials, preserved in 5% formalin onboard the ship, and stored until a laboratory analysis was completed.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0109078 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0109078
Funding provided by National Oceanic and Atmospheric Administration (NOAA) Award Number: unknown NEP NOAA
completed
Edward D. Cokelet
National Oceanic and Atmospheric Administration
206-526-6820
NOAA/PMEL 7600 Sand Point Way NE
Seattle
WA
98115-6439
USA
cokelet@pmel.noaa.gov
pointOfContact
Kenneth O. Coyle
University of Alaska Fairbanks
907-474-7705
Institute of Marine Science University of Alaska Fairbanks, School of Fisheries & Ocean Sciences
Fairbanks
AK
99775-7220
USA
coyle@ims.uaf.edu
pointOfContact
Seth L. Danielson
University of Alaska Fairbanks
907-474-7834
College of Fisheries and Ocean Sciences O’Neill 112, 905 N. Koyukuk Dr.
Fairbanks
AK
99775
USA
sldanielson@alaska.edu
pointOfContact
Edward V. Farley
National Oceanic and Atmospheric Administration - Alaska Fisheries Science Center
907-789-6085
Auke Bay Laboratories (NOAA Fisheries-AFSC) 17109 Point Lena Loop Road
Juneau
AK
99801
USA
ed.farley@noaa.gov
pointOfContact
Jamal Hasan Moss
National Oceanic and Atmospheric Administration - Alaska Fisheries Science Center
907-789-6609
17109 Pt. Lena Loop Road
Juneau
AK
99801
USA
Jamal.Moss@noaa.gov
pointOfContact
asNeeded
Dataset Version: 1
Unknown
year
haul_id
yrday_local
month_local
day_local
time_local_start
lat_start
lon_start
lat_end
lon_end
station
depth
duration
habitat
vol_settled
disp_vol
taxon
sex
count_aliq
aliquot
count_total
comments_catch
comments_tow
cruiseid
Tucker Trawl
theme
None, User defined
year
tow
day of year and decimal time (local time zone)
month_local
day_local
time_start_local
latitude at start time of measurement
longitude at start time of measurement
latitude at end time of measurement
longitude at end time of measurement
station id
depth
No BCO-DMO term
disp_vol
taxon
sex
count
samp_fraction_denom
comments
Cruise identfier
featureType
BCO-DMO Standard Parameters
Tucker Trawl
instrument
BCO-DMO Standard Instruments
GP0108
GP0207-01
MF0310
GP0207-02
service
Deployment Activity
Coastal Gulf of Alaska
Northeast Pacific
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
U.S. GLOBal ocean ECosystems dynamics
http://www.usglobec.org/
U.S. GLOBal ocean ECosystems dynamics
U.S. GLOBEC (GLOBal ocean ECosystems dynamics) is a research program organized by oceanographers and fisheries scientists to address the question of how global climate change may affect the abundance and production of animals in the sea.
The U.S. GLOBEC Program currently had major research efforts underway in the Georges Bank / Northwest Atlantic Region, and the Northeast Pacific (with components in the California Current and in the Coastal Gulf of Alaska). U.S. GLOBEC was a major contributor to International GLOBEC efforts in the Southern Ocean and Western Antarctic Peninsula (WAP).
U.S. GLOBEC
largerWorkCitation
program
U.S. GLOBEC Northeast Pacific
http://nepglobec.bco-dmo.org
U.S. GLOBEC Northeast Pacific
<p><strong>Program in a Nutshell</strong></p>
<p><strong>Goal: </strong> To understand the effects of climate variability and climate change on the distribution, abundance and production of marine animals (including commercially important living marine resources) in the eastern North Pacific. To embody this understanding in diagnostic and prognostic ecosystem models, capable of capturing the ecosystem response to major climatic fluctuations.</p>
<p><strong>Approach: </strong>To study the effects of past and present climate variability on the population ecology and population dynamics of marine biota and living marine resources, and to use this information as a proxy for how the ecosystems of the eastern North Pacific may respond to future global climate change. The strong temporal variability in the physical and biological signals of the NEP will be used to examine the biophysical mechanisms through which zooplankton and salmon populations respond to physical forcing and biological interactions in the coastal regions of the two gyres. Annual and interannual variability will be studied directly through <strong>long-term observations</strong> and detailed <strong>process studies</strong>; variability at longer time scales will be examined through <strong>retrospective analysis</strong> of directly measured and proxy data. Coupled <strong>biophysical models</strong> of the ecosystems of these regions will be developed and tested using the process studies and data collected from the long-term observation programs, then further tested and improved by hindcasting selected retrospective data series.</p>
NEP
largerWorkCitation
project
eng; USA
biota
oceans
Coastal Gulf of Alaska; Northeast Pacific
-155.2792
-137.1962
55.6635
60.0407
2001-07-17
2003-08-07
Northeast Pacific Ocean, Gulf of Alaska
0
BCO-DMO catalogue of parameters from Zooplankton catch data from Tucker trawls from CGOA LTOP cruises from the Coastal Gulf of Alaska, Northeast Pacific, 2001-2003 (NEP project)
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/14894.rdf
Name: year
Units: unitless
Description: <p>year, e.g. 2004 in the format YYYY</p>
http://lod.bco-dmo.org/id/dataset-parameter/14895.rdf
Name: haul_id
Units: unitless
Description: <p>Tow identification. First 4 numbers represent year, second 4 numbers represent haul number during year specified. in the format YYYYxxx</p>
http://lod.bco-dmo.org/id/dataset-parameter/14896.rdf
Name: yrday_local
Units: dimensionless
Description: <p>Local day and decimal time, as 326.5 for the 326th day of the year, or November 22 at 1200 hours (noon).</p>
http://lod.bco-dmo.org/id/dataset-parameter/14897.rdf
Name: month_local
Units: unitless
Description: <p>Numerical month of year, local time. in the format mm</p>
http://lod.bco-dmo.org/id/dataset-parameter/14898.rdf
Name: day_local
Units: unitless
Description: <p>Numerical day of the month, local time. in the format dd</p>
http://lod.bco-dmo.org/id/dataset-parameter/14899.rdf
Name: time_local_start
Units: unitless
Description: <p>Starting time of observation, local time , 24 hour clock. in the format HHMM</p>
http://lod.bco-dmo.org/id/dataset-parameter/14900.rdf
Name: lat_start
Units: decimal degrees
Description: <p>latitude at starting time of measurement (west is negative)</p>
http://lod.bco-dmo.org/id/dataset-parameter/14901.rdf
Name: lon_start
Units: decimal degrees
Description: <p>longitude at starting time of measurement (west is negative)</p>
http://lod.bco-dmo.org/id/dataset-parameter/14902.rdf
Name: lat_end
Units: decimal degrees
Description: <p>latitude at end time of measurement (south in negative), in decimal degress</p>
http://lod.bco-dmo.org/id/dataset-parameter/14903.rdf
Name: lon_end
Units: decimal degrees
Description: <p>longitude at end time of measurement (west is negative)</p>
http://lod.bco-dmo.org/id/dataset-parameter/14904.rdf
Name: station
Units: text
Description: <p>CSE = Cape St. Elias<br /><br />
CC = Cape Cleare<br /><br />
GAK = Gulf of Alaska, Seward Line<br /><br />
CCH = Cape Chiniak<br /><br />
GP = Gore Point<br /><br />
CK = Cape Kekurnoi<br /><br />
IB = <br /><br />
CKA = Cape Kaguyak<br /><br />
IP = Icy Point<br /><br />
CN = Cape Nukshak<br /><br />
OC = Ocean Cape<br /></p>
http://lod.bco-dmo.org/id/dataset-parameter/14905.rdf
Name: depth
Units: meters
Description: <p>depth of tow</p>
http://lod.bco-dmo.org/id/dataset-parameter/14906.rdf
Name: duration
Units: seconds
Description: <p>duration of tow</p>
http://lod.bco-dmo.org/id/dataset-parameter/14907.rdf
Name: habitat
Units: text
Description: <p>Habitat:<br />
Continental Shelf<br />
Continental Slope<br />
Nearshore<br />
Offshore of Continental Shelf</p>
http://lod.bco-dmo.org/id/dataset-parameter/14908.rdf
Name: vol_settled
Units: milliliters
Description: <p>volume of settled plankton sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/14909.rdf
Name: disp_vol
Units: milliliters
Description: <p>displacement volume (biovolume) of plankton net samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/14910.rdf
Name: taxon
Units: text
Description: <p>Taxonomic group or entity. This may be a family, class, genus, species, etc.; usually this parameter will contain a mixture of taxonomic entities.</p>
http://lod.bco-dmo.org/id/dataset-parameter/14911.rdf
Name: sex
Units: text
Description: <p>Classification by sex (male/female).</p>
http://lod.bco-dmo.org/id/dataset-parameter/14912.rdf
Name: count_aliq
Units: dimensionless
Description: <p>Number of individuals found in fraction of sample examined.</p>
http://lod.bco-dmo.org/id/dataset-parameter/14913.rdf
Name: aliquot
Units: dimensionless
Description: <p>Denominator of fraction of sample examined, e.g. 4 is one quarter (1/4).</p>
http://lod.bco-dmo.org/id/dataset-parameter/14914.rdf
Name: count_total
Units: dimensionless
Description: <p>Total number of individuals counted in the sample, calculated as the aliquot times the count in that aliquot.</p>
http://lod.bco-dmo.org/id/dataset-parameter/14915.rdf
Name: comments_catch
Units: text
Description: <p>Comments pertaining to the organisms in the sample.</p>
http://lod.bco-dmo.org/id/dataset-parameter/14916.rdf
Name: comments_tow
Units: text
Description: <p>Comments pertaining to the sampling, not the animals in the tow.</p>
http://lod.bco-dmo.org/id/dataset-parameter/787674.rdf
Name: cruiseid
Units: unitless
Description: <p>Cruise identifier</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
761677
https://darchive.mblwhoilibrary.org/bitstream/1912/25177/1/dataset-3010_tucker-catch-cgoa-ltop__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.3010.1
download
onLine
dataset
<p>The OCC/GLOBEC survey occurred along the coastal waters of the Gulf of Alaska and in Shelikof Strait, AK during 2001-2004. Transects sampled during the survey were perpendicular to shore and extended from nearshore across the continental shelf to oceanic waters beyond the 200-m shelf break. The survey was conducted aboard the contract fishing vessel F/V <em>Great Pacific</em> during 2001-2002 and 2004, and aboard NOAA Ship <em>Miller Freeman</em> during 2003.</p>
<p>Fish samples were collected in a 198-m long mid-water rope trawl with hexagonal mesh wings and body, and a 1.2-cm mesh liner in the codend. The rope trawl was towed at 6.5 to 9.3 km • hour-1, at or near surface, and had a typical spread of 40-m horizontally and 15-m vertically. All tows lasted 30 minutes and covered 2.8 to 4.6 km, and sampling was done during daylight hours; however, tows occurred during night as part of a 24-hour repeat sampling of a single station for one day during 2001 and 2003.</p>
<p>Once the net was hauled aboard, salmon and other fishes were sorted by species and counted. Standard biological measurements including fork length, body weight, and sex were taken from sub-samples of all salmon species. Sub-samples of juvenile pink (<em>Oncorhynchus gorbuscha</em>), chum (<em>O. keta</em>), and sockeye (<em>O. nerka</em>) salmon were frozen whole for laboratory analyses of food habits, otolith hatchery thermal marks (pink and chum salmon), and genetic analysis (chum salmon).</p>
<p>Plankton samples were collected using a 1-m2 Tucker trawl fitted with a 505-um mesh net that was towed near surface (approximately 1 knot) for 5 minutes (2001-2003 surveys). During 2004, plankton samples were collected using a WP-2 net fitted with a 253-um mesh net that was deployed vertically to a depth of 100-m depth. The volume of water filtered by the net was estimated using flow meters. Plankton samples were transferred into vials, preserved in 5% formalin onboard the ship, and stored until a laboratory analysis was completed.</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Tucker Trawl
Tucker Trawl
PI Supplied Instrument Name: Tucker Trawl PI Supplied Instrument Description:Plankton samples were collected using a 1-m2 Tucker trawl fitted with a 505-micron mesh net that was towed near the surface (for approximately 1 knot) for 5 minutes.
Volume of water filtered by each net was estimated by flow meters and the plankton samples were preserved in 5% formalin. Instrument Name: Tucker Trawl Instrument Short Name:Tucker Trawl Instrument Description: The original Tucker Trawl, a net with a rectangular mouth opening first built in 1951 by G.H. Tucker, was not an opening/closing system, but shortly thereafter it was modified so that it could be opened and closed. The original had a 183 cm by 183 cm flexible rectangular mouth opening 914 cm long net with 1.8 cm stretched mesh for the first 457 cm and 1.3 cm mesh for last 457 cm. 152 cm of coarse plankton or muslin netting lined the end of the net. Tucker designed the net to collect animals associated with the deep scattering layers, principally euphausiids, siphonophores, and midwater fish. (from Wiebe and Benfield, 2003). Currently used Tucker Trawls usually have 1-m2 openings and can have a single net or multiple nets on the frame. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/NETT0161/
Cruise: GP0108
GP0108
F/V Great Pacific
vessel
GP0108
Edward V. Farley
National Oceanic and Atmospheric Administration - Alaska Fisheries Science Center
http://globec.whoi.edu/nep/reports/cgoa_cruises/gp0108cr.pdf
Report describing GP0108
Cruise: GP0207-01
GP0207-01
F/V Great Pacific
vessel
GP0207-01
Edward D. Cokelet
National Oceanic and Atmospheric Administration
http://globec.whoi.edu/nep/reports/cgoa_cruises/gp0207cr.pdf
Report describing GP0207-01
Cruise: MF0310
MF0310
Community Standard Description
International Council for the Exploration of the Sea
R/V Miller Freeman
vessel
MF0310
Edward D. Cokelet
National Oceanic and Atmospheric Administration
http://globec.whoi.edu/nep/reports/cgoa_cruises/mf0310cr.pdf
Report describing MF0310
Cruise: GP0207-02
GP0207-02
F/V Great Pacific
vessel
GP0207-02
Chris Kondzela
National Oceanic and Atmospheric Administration - Alaska Fisheries Science Center
http://globec.whoi.edu/nep/reports/cgoa_cruises/gp0207cr.pdf
Report describing GP0207-02
F/V Great Pacific
vessel