http://lod.bco-dmo.org/id/dataset/540832
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
2014-11-25
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
MOCNESS tow zooplankton abundance estimates from R/V New Horizon cruise NH1008 in Monterey Bay, near MBARI buoy M1 (36.747?N, 122.022?W); 2010 (GATEKEEPERS project)
2014-11-24
publication
2014-11-24
revision
BCO-DMO Linked Data URI
2014-11-24
creation
http://lod.bco-dmo.org/id/dataset/540832
David M. Checkley
University of California-San Diego Scripps
principalInvestigator
Michael Dagg
Louisiana Universities Marine Consortium
principalInvestigator
George A. Jackson
Texas A&M University
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: Checkley, D. M., Jackson, G. A., Dagg, M. (2014) MOCNESS tow zooplankton abundance estimates from R/V New Horizon cruise NH1008 in Monterey Bay, near MBARI buoy M1 (36.747?N, 122.022?W); 2010 (GATEKEEPERS project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 24 November 2014) Version Date 2014-11-24 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/540832 [access date]
MOCNESS tow zooplankton abundance estimates Dataset Description: <p>The abundance (# m<sup>-3</sup>, ppm) for selected taxa in each analyzed MOCNESS deployment averaged over upcast nets.</p>
<p><strong>Related reference:</strong><br />
Dagg, M.J., G.A. Jackson, and D.M. Checkley, Jr. (in press). The distribution and vertical flux of fecal pellets from large zooplankton in Monterey Bay and coastal California." <em>Deep-Sea Research Part I.</em></p> Methods and Sampling: <p><strong>Sample Collection:</strong> Samples were collected using a 1-m<sup>2</sup> MOCNESS net with 202-micron-mesh nets, pressure sensor and flowmeter. Tow speed was generally 0.5-1 m sec<sup>-1</sup>. Only those samples from selected net openings were analyzed and only data from those analyses are provided. In general, for each MOCNESS deployment, samples from 3-5 nets opened and closed sequentially from the lowest depth (zl, m) to the shallowest, or upper, depth (zu, m) were analyzed. We present here the abundances for selected taxa enumerated in each deployment averaged over all upcast samples.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0927863 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0927863
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0928139 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0928139
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0928425 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0928425
onGoing
David M. Checkley
University of California-San Diego Scripps
(858)534-4228
UCSD 9500 Gilman Drive # 0218
La Jolla
CA
92093-0218
USA
dcheckley@ucsd.edu
pointOfContact
Michael Dagg
Louisiana Universities Marine Consortium
+1-206-201-3884
4660 NE Mill Heights Circle 8124 Hwy 56
4660 NE Mill Heights Circle
WA
98110
USA
mdagg@me.com
pointOfContact
George A. Jackson
Texas A&M University
979-845-0405
Department of Oceanography, MS 3146 Texas A&M University Department of Oceanography
College Station
TX
77843-3146
USA
gjackson@tamu.edu
pointOfContact
asNeeded
Dataset Version: 24 November 2014
Unknown
Taxon
MN_Tow
Date_Deployed
Time_Deployed
Latitude_Deployed
Longitude_Deployed
zl
zu
Abund
Vol
Number_Measured
Number_Counted
Folsom Splitter
MOCNESS
theme
None, User defined
taxon
tow
date_start
time_start
latitude at start time of measurement
longitude at start time of measurement
depth_max
depth_min
abundance
count
featureType
BCO-DMO Standard Parameters
Folsom Plankton Splitter
MOCNESS
instrument
BCO-DMO Standard Instruments
NH1008
service
Deployment Activity
Monterey Bay, tentatively near MBARI buoy M1 (36.747°N, 122.022°W)
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.
Zooplankton feeding at the base of the particle maximum: Gatekeepers of the Vertical Flux?
http://iod.ucsd.edu/gatekeeper/
Zooplankton feeding at the base of the particle maximum: Gatekeepers of the Vertical Flux?
<p><strong>Zooplankton feeding at the base of the particle maximum: Gatekeepers of the Vertical Flux? </strong></p>
<p>A range of observations suggest that zooplankton act as gatekeepers for material leaving the euphotic zone. This study will investigate the interactions of zooplankton with other particles using a suite of autonomous and tethered instruments in conjunction with finescale water sampling. The SOLOPC (Sounding Oceanographic Observer with Laser Optical Plankton Counter) will be the autonomous instrument and provide hourly profiles of zooplankton and other particles. Previous sampling with the SOLOPC indicated a diel cycle of production and abundance of particles in the euphotic zone and their sinking and consumption, presumably by zooplankton observed at the base of the particle abundance maximum. The SOLOPC senses particles, including zooplankton and aggregates, and measures their equivalent spherical diameters which can be used to compute particle size spectra. However, it is difficult to use the SOLOPC to distinguish among particle types, such as copepods, larvaceans, and aggregates, particularly if they are small. The research will include an intensive field study that will take place in Monterey Bay and use adaptive sampling to observe near SOLOPCs with a new, AUV-borne imaging system, ship-based CTD and MOCNESS sampling, and MBARI's ROV Ventana. The investigators will alter a SOLOPC to be stationary relative to an isopycnal and use the particle counts that it accumulates to calculate a flux spectrum. They will combine the flux and concentration spectra to estimate particle sinking velocities as a function of particle diameter. Zooplankton feeding in the water column will be estimated by analyzing the gut fluorescence of animals caught in zooplankton nets and by counting the distribution of fecal pellets in water samples. Results will enhance the understanding of the role of the zooplankton as gatekeepers in the vertical flux of particles and, hence, the biological pump. The study will also provide new insight into factors that affect zooplankton behavior and ecology.</p>
<p>Collaborating institutions include SIO, TAMU, LUMCON, MBARI, BIO, and Université Paris VI. The SOLOPC, modified to measure flux as well as profile, and REFLICS are intended for acquisition and use by other researchers worldwide. The understanding we gain of role of the zooplankton as gatekeepers of the vertical flux will contribute valuably to understanding of the biological pump and the carbon cycle.</p>
<p><strong>PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH</strong><br />
Jackson, GA and DM Checkley Jr. "Particle size distributions in the upper 100 m water column and their implications for animal feeding in the plankton," <em>Deep-Sea Research</em>, 2011.</p>
<p>Figure 1. R/V New Horizon Cruise NH1008 GATEKEEPERS<br />
[click on the image to view a larger version]<br />
<a href="http://bcodata.whoi.edu/GATEKEEPERS/NH1008_GATEKEEPERS.jpg" target="_blank"><img alt="" src="https://datadocs.bco-dmo.org/d2/GATEKEEPERS/NH1008_GATEKEEPERS.jpg" style="width:594px" /></a></p>
GATEKEEPERS
largerWorkCitation
project
eng; USA
oceans
Monterey Bay, tentatively near MBARI buoy M1 (36.747°N, 122.022°W)
2014-11-24
Monterey Bay, CA and waters offshore
0
BCO-DMO catalogue of parameters from MOCNESS tow zooplankton abundance estimates from R/V New Horizon cruise NH1008 in Monterey Bay, near MBARI buoy M1 (36.747?N, 122.022?W); 2010 (GATEKEEPERS 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/540841.rdf
Name: Taxon
Units: text
Description: <p>Taxon enumerated in respective net tow</p>
http://lod.bco-dmo.org/id/dataset-parameter/540842.rdf
Name: MN_Tow
Units: Dimensionless
Description: <p>Sequential number of MN deployment</p>
http://lod.bco-dmo.org/id/dataset-parameter/540843.rdf
Name: Date_Deployed
Units: YYYYMMDD
Description: <p>Deployment Date (PDT)</p>
http://lod.bco-dmo.org/id/dataset-parameter/540844.rdf
Name: Time_Deployed
Units: HHMM
Description: <p>Deployment Time (PDT)</p>
http://lod.bco-dmo.org/id/dataset-parameter/540845.rdf
Name: Latitude_Deployed
Units: decimal degrees
Description: <p>Deployment Latitude (South is negative)</p>
http://lod.bco-dmo.org/id/dataset-parameter/540846.rdf
Name: Longitude_Deployed
Units: decimal degrees
Description: <p>Deployment Longitude (West is negative)</p>
http://lod.bco-dmo.org/id/dataset-parameter/540847.rdf
Name: zl
Units: meters
Description: <p>Estimated deepest depth of tow</p>
http://lod.bco-dmo.org/id/dataset-parameter/540848.rdf
Name: zu
Units: meters
Description: <p>Upper depth (in this case the surface)</p>
http://lod.bco-dmo.org/id/dataset-parameter/540849.rdf
Name: Abund
Units: individuals m-3
Description: <p>Numerical abundance averaged over depth of tow</p>
http://lod.bco-dmo.org/id/dataset-parameter/540850.rdf
Name: Vol
Units: ppm
Description: <p>Volumetric abundance averaged over depth of tow</p>
http://lod.bco-dmo.org/id/dataset-parameter/540851.rdf
Name: Number_Measured
Units: individuals
Description: <p>Number of individuals measured to estimate mean Equivalent spherical diameter (ESD)</p>
http://lod.bco-dmo.org/id/dataset-parameter/540852.rdf
Name: Number_Counted
Units: individuals
Description: <p>Number of individuals counted to estimate abundance</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
11692
https://datadocs.bco-dmo.org/file/k66gxG5TOWDVj1/MOCNESS_Zoop.csv
MOCNESS_Zoop.csv
Primary data file for dataset ID 540832
download
https://osprey.bco-dmo.org/dataset/540832/data/download
download
onLine
dataset
<p><strong>Sample Collection:</strong> Samples were collected using a 1-m<sup>2</sup> MOCNESS net with 202-micron-mesh nets, pressure sensor and flowmeter. Tow speed was generally 0.5-1 m sec<sup>-1</sup>. Only those samples from selected net openings were analyzed and only data from those analyses are provided. In general, for each MOCNESS deployment, samples from 3-5 nets opened and closed sequentially from the lowest depth (zl, m) to the shallowest, or upper, depth (zu, m) were analyzed. We present here the abundances for selected taxa enumerated in each deployment averaged over all upcast samples.</p>
Specified by the Principal Investigator(s)
<p><strong>Sample Analysis:</strong> Samples were split multiple times using a Folsom splitter. Specific taxa were identified and enumerated in one or more splits using a dissecting microscope. Equivalent spherical diameter (ESD) was estimated from length and width and assuming a geometric shape for individual taxa. For discretely sized taxa (<em>Calanus pacificus</em> adult females, adult males, and fifth copepodites: C.pac AF, AM, C5; <em>Metridia pacifica</em> adult females: M.pac AF; <em>Euclanus californicus</em> adult males, adult females, and fourth and fifth copepodites: E.cal AF, AM, C4,C5) mean ESD was calculated from all nets together. For other taxa (other large cops, euphausiids, and small zooplankton), mean ESD was calculated for each net where present and the means were weighted to estimate the mean ESD for all nets. Mean volume was calculated from mean ESD for each taxon using the equation ⅙π (mean ESD)<sup>3</sup>. Abundance of each taxon was calculated by multiplying counts in each net by their corresponding split factors, summing over all nets and dividing by the sum volume filtered for all nets. Mean volume was multiplied by abundance for each taxon to calculate volume in cm<sup>3</sup>m<sup>-3</sup> or ppm. Number of individuals measured and counted in each taxonomic group was retained to display where low counts produce uncertainty in calculations.</p>
<p><strong>BCO-DMO Processing Notes</strong><br />
&nbsp;- Generated from original file: "NH1008_MN_integrated_zoop_16sept13_jfb_no_header.xlsx" contributed by David Checkley<br />
&nbsp;- Parameter names edited to conform to BCO-DMO naming convention found at <a href="http://usjgofs.whoi.edu/naming-guidelines.html" target="_blank">Choosing Parameter Name</a><br />
&nbsp;- "MOCNESS_" pre-pended to Tow Id for consistency with MOCNESS stations tow ids<br />
&nbsp;- Date/Time and Lat/Lon deployed added to each record from MOCNESS stations to enable use in MapServer</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
Folsom Splitter
Folsom Splitter
PI Supplied Instrument Name: Folsom Splitter PI Supplied Instrument Description:Samples were split multiple times using a Folsom splitter. Instrument Name: Folsom Plankton Splitter Instrument Short Name:Folsom Splitter Instrument Description: A device for sub-sampling of plankton and ichthyoplankton samples by splitting, developed by Dr. Folsom of the Scripps Institute of Oceanography. Ideally suited for splitting plankton samples with minimal debris. A measured volume of plankton sample is placed in the undivided section of the drum. This is rotated 120 degrees to divide the stirred sample with a separating blade. Standard Methods suggests splitting until a subsample of 200-500 individuals is obtained.
MOCNESS
MOCNESS
PI Supplied Instrument Name: MOCNESS PI Supplied Instrument Description:Samples were collected using a 1-m2 MOCNESS net with 202-micron-mesh nets, pressure sensor and flowmeter. Tow speed was generally 0.5-1 m sec-1. Only those samples from selected net openings were analyzed and only data from those analyses are provided. In general, for each MOCNESS deployment, samples from 3-5 nets opened and closed sequentially from the lowest depth (zl, m) to the shallowest, or upper, depth (zu, m) were analyzed Instrument Name: MOCNESS Instrument Short Name:MOCNESS Instrument Description: The Multiple Opening/Closing Net and Environmental Sensing System or MOCNESS is a family of net systems based on the Tucker Trawl principle. There are currently 8 different sizes of MOCNESS in existence which are designed for capture of different size ranges of zooplankton and micro-nekton Each system is designated according to the size of the net mouth opening and in two cases, the number of nets it carries. The original MOCNESS (Wiebe et al, 1976) was a redesigned and improved version of a system described by Frost and McCrone (1974). (from MOCNESS manual) Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/NETT0097/
Cruise: NH1008
NH1008
R/V New Horizon
Community Standard Description
International Council for the Exploration of the Sea
R/V New Horizon
vessel
NH1008
David M. Checkley
University of California-San Diego Scripps
http://bcodata.whoi.edu/GATEKEEPERS/cruise_plan_checkley_nh_8_25_jul_10_v3.pdf
Report describing NH1008
R/V New Horizon
Community Standard Description
International Council for the Exploration of the Sea
R/V New Horizon
vessel