http://lod.bco-dmo.org/id/dataset/636602
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
2016-01-27
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Summary deployment data for MOCNESS 1m2 and 10m2 tows from R/V Kilo Moana KM1407, KM1418, KM1506 in the Central North Pacific, Station ALOHA from 2014-2015 (SuspendSinkPart project)
2016-01-27
publication
2016-01-27
revision
BCO-DMO Linked Data URI
2016-01-27
creation
http://lod.bco-dmo.org/id/dataset/636602
Jeffrey C. Drazen
University of Hawai'i
principalInvestigator
Hilary G. Close
University of Hawaiʻi at Mānoa
principalInvestigator
Cecelia Hannides
University of Hawai'i
principalInvestigator
Brian N. Popp
University of Hawaiʻi at Mānoa
principalInvestigator
Kanesa Seraphin
University of Hawai'i
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: Drazen, J. C., Close, H. G., Hannides, C., Popp, B. N., Seraphin, K. (2016) Summary deployment data for MOCNESS 1m2 and 10m2 tows from R/V Kilo Moana KM1407, KM1418, KM1506 in the Central North Pacific, Station ALOHA from 2014-2015 (SuspendSinkPart project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version final) Version Date 2016-01-27 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/636602 [access date]
Summary deployment data for MOCNESS 1m2 and 10m2 tows Dataset Description: <p>Summary data from 1m2 and 10m2 MOCNESS tows conducted off Hawaii.&nbsp; Start and end of each net deployment&nbsp; pressure, fluorometry,conductivity, salinity, temperature,potential temperature and potential density.&nbsp; These data represent 33 tows from three cruises.</p>
<p><strong>DMO notes:</strong><br />
Changed MOCNESS time column to yrday_local and used it to get hour/min.&nbsp;<br />
The first tow in each cruise has incorrect MOCNESS time when the tow crossed midnight.&nbsp; The hour and minute calculations are correct but for some reason the MOCNESS incremented a day when a net was opened.&nbsp; This is only true for the first tow in each cruise.<br />
Added year column to help with time conversions.</p> Methods and Sampling: <p>Standard Multiple Opening Closing Net Environmental Sampling Systems (MOCNESS; Wiebe et al., 1976; Wiebe et al., 1985; Sameoto et al., 2000) were used to sample zooplankton (1m<sup>2</sup> mouth opening system) and micronekton (10m<sup>2</sup> mouth opening system) from the surface to 1500m depth. Nets were first deployed to maximum depth and slowly retrieved towards the surface. Tows were conducted during the day (typically 09:30-15:30) or during the night (typically 21:30-03:30) so as to avoid migration times around sunrise and sunset. All raw data files are available upon request.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1333734 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1333734
completed
Jeffrey C. Drazen
University of Hawai'i
808-956-6567
Department of Oceanography, SOEST 1000 Pope Road
Honolulu
HI
96822
USA
jdrazen@hawaii.edu
pointOfContact
Hilary G. Close
University of Hawaiʻi at Mānoa
305-421-4306 ext. 54306
46000 Rickenbacker Causeway
Miami
FL
33149
USA
hclose@miami.edu
pointOfContact
Cecelia Hannides
University of Hawai'i
Department of Geology and Geophysics and Department of Oceanography 1680 East-West Road
Honolulu
HI
96822
USA
ceceliah@hawaii.edu
pointOfContact
Brian N. Popp
University of Hawaiʻi at Mānoa
808-956-6206
Department of Earth Sciences 1680 East-West Road
Honolulu
HI
96822
USA
popp@hawaii.edu
pointOfContact
Kanesa Seraphin
University of Hawai'i
808-225-1753
UH Sea Grant Center for Marine Science Education, University of Hawaii 2525 Correa Road
Honolulu
HI
96822
USA
kanesa@hawaii.edu
pointOfContact
asNeeded
Dataset Version: final
Unknown
cruise
year
datatype
tow
day_night
net
event
yrday_local
time_local
ISO_DateTime_Local
press_tow
temp
theta
sal
sigma
net_angle
flow_counts
horizontal_velocity
vertical_velocity
volume_filt
fluor
lat
lon
comments
MOCNESS_1
MOCNESS_10
theme
None, User defined
cruise id
year
datatype
tow
time_of_day
net
action
day of year and decimal time (local time zone)
time_local
ISO_DateTime_Local
water pressure
water temperature at measurement depth
potential temperature
salinity
sigma-theta
angle of tow body relative to vertical
flow
horizontal velocity towed
vertical velocity towed
volume of water filtered
flvolt
latitude
longitude
comments
featureType
BCO-DMO Standard Parameters
MOCNESS1
MOCNESS10
instrument
BCO-DMO Standard Instruments
KM1407
KM1418
KM1506
service
Deployment Activity
Central North Pacific, Station ALOHA
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.
Evaluating the relative importance of suspended and sinking particles to the meso and bathypelagic food web in the central North Pacific
https://osprey.bco-dmo.org/project/537123
Evaluating the relative importance of suspended and sinking particles to the meso and bathypelagic food web in the central North Pacific
<p><em>Description from NSF award abstract:</em><br />
The ocean's midwaters are the largest living space on the planet. The mesopelagic food web plays key roles in the biological carbon pump and the production of food for commercially harvested species, but its functioning is understudied because it is remote and technologically challenging to sample. Recent estimates indicate respiratory demand outstrips measured sinking particle supply by up to 2-3 orders of magnitude suggesting that some food inputs to the mesopelagic food web have been underestimated or missed. Suspended particles frequently are not sampled effectively and may be an overlooked food source. Because identifying the principal inputs of organic matter to the deep-sea food web is critical to understanding its function, the investigators propose to evaluate the relative importance of suspended and sinking particles to the meso- and bathypelagic food web in the central North Pacific. They will characterize the isotopic compositions of specific groups of mesopelagic and bathypelagic zooplankton and micronekton, and identify the extent to which they consume suspended or sinking particles using mass balance approaches. The investigators recently have recognized differences in delta 15N and delta 13C values of amino acids (AA) of sinking and suspended particles; these patterns diverge with depth, providing a means to distinguish between food web pathways. The research will define the source-specific isotopic values of suspended and sinking particles at several depths from the surface to the bathypelagic and test proposed microbial mechanisms driving these depth patterns. At corresponding depths, MOCNESS trawls will sample diverse metazoa: zooplankton size fractions, plus targeted resident, migrating and likely suspension-feeding taxa of zooplankton and micronekton. Preliminary data suggest that suspended particles are a secondary food source, containing less labile organic matter than sinking particles that exhibit a seasonal cycle in flux in the central North Pacific. This study will determine if suspended particles become more important to zooplankton and micronekton during a time of year when sinking particle flux is low (Jan/Feb) in comparison to when it is high (Aug), allowing an evaluation of how temporal change in surface ocean productivity affects the functioning of mesopelagic food webs.</p>
<p>Recent research has called for additional study of the ocean's deep midwaters. This study will provide new insights into the functioning of the meso- and bathypelagic food web and its coupling with surface ocean processes in the central North Pacific. The recently-demonstrated ecological tool of amino acid-specific isotopic analysis will provide a novel and comprehensive approach with which to address our hypotheses, and the project will develop the first AA isotopic dataset spanning particles to fish. Results will help identify the ecological underpinnings of increasing delta 15N values with depth in zooplankton -- apparently a common pattern. Zooplankton consumption of suspended particles also could constitute a mechanistic link between the microbial loop and higher trophic levels. The processes controlling the enormous attenuation of particle flux by mesopelagic consumers -- and thereby the strength of carbon sequestration to the deep ocean -- are not understood. Seasonal sampling will help us relate mesopelagic food web processes to changes in surface ocean productivity, furthering our understanding of future climate change impacts on deep-sea food webs and carbon flux. With regard to fisheries, many oceanic top predators such as tuna and swordfish feed on mesopelagic micronekton. A clearer understanding of the structure of mesopelagic food webs will help inform ecosystem models which are used to understand variation in fisheries production.</p>
SuspendSinkPart
largerWorkCitation
project
eng; USA
oceans
Central North Pacific, Station ALOHA
-158.171
-157.5683
22.4076
22.963
2014-02-19
2015-05-11
Subtropical waters north of Hawaii; Station Aloha (22° 45'N, 158° 00'W)
0
BCO-DMO catalogue of parameters from Summary deployment data for MOCNESS 1m2 and 10m2 tows from R/V Kilo Moana KM1407, KM1418, KM1506 in the Central North Pacific, Station ALOHA from 2014-2015 (SuspendSinkPart 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/636657.rdf
Name: cruise
Units: text
Description: <p>identification of cruise</p>
http://lod.bco-dmo.org/id/dataset-parameter/636658.rdf
Name: year
Units: number
Description: <p>year</p>
http://lod.bco-dmo.org/id/dataset-parameter/636659.rdf
Name: datatype
Units: text
Description: <p>sampling method - instrument type; e.g. MOCNESS-1 or MOCNESS-10</p>
http://lod.bco-dmo.org/id/dataset-parameter/636660.rdf
Name: tow
Units: alphanumeric
Description: <p>tow number;encrypted to include the net size; the sequential tow number; and the year</p>
http://lod.bco-dmo.org/id/dataset-parameter/636661.rdf
Name: day_night
Units: text
Description: <p>time of day the tow took place; reference to day or night operation</p>
http://lod.bco-dmo.org/id/dataset-parameter/636662.rdf
Name: net
Units: number
Description: <p>MOCNESS net number:0-9</p>
http://lod.bco-dmo.org/id/dataset-parameter/636663.rdf
Name: event
Units: text
Description: <p>start or end of tow</p>
http://lod.bco-dmo.org/id/dataset-parameter/636664.rdf
Name: yrday_local
Units: decimal number
Description: <p>year day as a decimal; based on Julian calendar; local</p>
http://lod.bco-dmo.org/id/dataset-parameter/636665.rdf
Name: time_local
Units: decimal minute
Description: <p>time of tow; local time using 24 hour clock</p>
http://lod.bco-dmo.org/id/dataset-parameter/636666.rdf
Name: ISO_DateTime_Local
Units: YYYY-MM-DDTHH:MM:SS[.xx][+/-TZ]
Description: <p>time standard based on ISO 8601:2004(E)</p>
http://lod.bco-dmo.org/id/dataset-parameter/636667.rdf
Name: press_tow
Units: decibars
Description: <p>depth of tow converted to pressure</p>
http://lod.bco-dmo.org/id/dataset-parameter/636668.rdf
Name: temp
Units: degrees Celsius
Description: <p>temperature at the recorded pressure</p>
http://lod.bco-dmo.org/id/dataset-parameter/636669.rdf
Name: theta
Units: degrees Celsius
Description: <p>potential temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/636670.rdf
Name: sal
Units: unitless
Description: <p>salinity calculated from conductivity; bad values are set to 50</p>
http://lod.bco-dmo.org/id/dataset-parameter/636671.rdf
Name: sigma
Units: unitless
Description: <p>sigma theta or potential density</p>
http://lod.bco-dmo.org/id/dataset-parameter/636672.rdf
Name: net_angle
Units: degrees
Description: <p>angle of net frame relative to vertical (0-89 degrees)</p>
http://lod.bco-dmo.org/id/dataset-parameter/636673.rdf
Name: flow_counts
Units: counts
Description: <p>consecutive flow counts</p>
http://lod.bco-dmo.org/id/dataset-parameter/636674.rdf
Name: horizontal_velocity
Units: meters per second
Description: <p>horizontal net velocity</p>
http://lod.bco-dmo.org/id/dataset-parameter/636675.rdf
Name: vertical_velocity
Units: meters per second
Description: <p>vertical net velocity</p>
http://lod.bco-dmo.org/id/dataset-parameter/636676.rdf
Name: volume_filt
Units: cubic meters
Description: <p>volume filtered by the net</p>
http://lod.bco-dmo.org/id/dataset-parameter/636677.rdf
Name: fluor
Units: volts
Description: <p>relative fluorescence (0-5 volts)</p>
http://lod.bco-dmo.org/id/dataset-parameter/636678.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude; positive = North</p>
http://lod.bco-dmo.org/id/dataset-parameter/636679.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude; negative = West</p>
http://lod.bco-dmo.org/id/dataset-parameter/636680.rdf
Name: comments
Units: text
Description: <p>information about the tows</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
85620
https://datadocs.bco-dmo.org/file/VJJWD1gSljGXMB/MOCsummary_rs.csv
MOCsummary_rs.csv
Primary data file for dataset ID 636602
download
https://osprey.bco-dmo.org/dataset/636602/data/download
download
onLine
dataset
<p>Standard Multiple Opening Closing Net Environmental Sampling Systems (MOCNESS; Wiebe et al., 1976; Wiebe et al., 1985; Sameoto et al., 2000) were used to sample zooplankton (1m<sup>2</sup> mouth opening system) and micronekton (10m<sup>2</sup> mouth opening system) from the surface to 1500m depth. Nets were first deployed to maximum depth and slowly retrieved towards the surface. Tows were conducted during the day (typically 09:30-15:30) or during the night (typically 21:30-03:30) so as to avoid migration times around sunrise and sunset. All raw data files are available upon request.</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
MOCNESS_1
MOCNESS_1
PI Supplied Instrument Name: MOCNESS_1 PI Supplied Instrument Description:The 1-meter-squared MOCNESS that was used was a standard MOCNESS. Instrument Name: MOCNESS1 Instrument Short Name:MOC1 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. The MOCNESS-1 carries nine 1-m2 nets usually of 335 micrometer mesh and is intended for use with the macrozooplankton. All nets are black to reduce contrast with the background. A motor/toggle release assembly is mounted on the top portion of the frame and stainless steel cables with swaged fittings are used to attach the net bar to the toggle release. A stepping motor in a pressure compensated case filled with oil turns the escapement crankshaft of the toggle release which sequentially releases the nets to an open then closed position on command from the surface. -- from the MOCNESS Operations Manual (1999 + 2003). Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/NETT0097/
MOCNESS_10
MOCNESS_10
PI Supplied Instrument Name: MOCNESS_10 PI Supplied Instrument Description:The 10-square-meter mouth opening MOCNESS was a standard MOCNESS. Instrument Name: MOCNESS10 Instrument Short Name:MOC10 Instrument Description: The Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) is based on the Tucker Trawl principle (Tucker, 1951). The MOCNESS-10 (with 10 m^2 nets) carries 6 nets of 3.0-mm circular mesh which are opened and closed sequentially by commands through conducting cable from the surface (Wiebe et al., 1976). In this system, "the underwater unit sends a data frame, comprising temperature, depth, conductivity, net-frame angle, flow count, time, number of open net, and net opening/closing, to the deck unit in a compressed hexadecimal format every 2 seconds and from the deck unit to a microcomputer every 4 seconds" (Wiebe et al., 1985). Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/NETT0097/
Cruise: KM1407
KM1407
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel
KM1407
Jeffrey C. Drazen
University of Hawaiʻi at Mānoa
Cruise: KM1418
KM1418
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel
KM1418
Jeffrey C. Drazen
University of Hawaiʻi at Mānoa
Cruise: KM1506
KM1506
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel
KM1506
Hilary G. Close
University of Hawai'i
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel