http://lod.bco-dmo.org/id/dataset/852896
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
2021-06-02
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Neocalanus distribution, mean length, mean weight, abundance and biomass from the Gulf of Alaska , Fall 2015, 2016 and 2017
2024-05-10
publication
2024-05-10
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2024-05-10
publication
https://doi.org/10.26008/1912/bco-dmo.852896.1
Russell R. Hopcroft
University of Alaska Fairbanks
principalInvestigator
Petra H. Lenz
University of Hawaiʻi at Mānoa
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: Hopcroft, R. R., Lenz, P. H. (2024) Neocalanus distribution, mean length, mean weight, abundance and biomass from the Gulf of Alaska , Fall 2015, 2016 and 2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-05-10 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.852896.1 [access date]
Dataset Description: <p>Notes: In 2015 a 505um mesh was utilized on the multinet however in 2016 and 2017 a 150 um mesh was employed.&nbsp; The Neocalanus copepods are above the capture efficiency for both nets and no bias is introduced because of the different methodology.</p> Methods and Sampling: <p>Zooplankton samples were collected from the Gulf of Alaska (Seward Line) in September 2015, 2016 and 2017 using a vertically hauled MultiNet (0.25 m2 MIDI) equipped with a 505um mesh in 2015 and a 150 um mesh in 2016 and 2017. Depth strata sampled were 0-100m, 100-200m, 200-300m, 300-400 and 400-700m.&nbsp; The samples were immediately preserved in 10% formalin</p>
<p>For analysis each sample was poured into a sorting tray where large organisms, primarily shrimp and jelly fish, were removed. The sample was then sequentially split using a Folsom splitter until a subsample containing approximately 100 specimens of Neocalanus copepods was obtained. The individual organisms were identified to species, staged, and the prosome length was measured using a computer based program interfaced to a digitizing tablet . Dry weights were calculated from literature length- weight equations. Abundance and biomass were calculated for each taxon and tabulated using EXCEL</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1459826 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1459826
completed
Russell R. Hopcroft
University of Alaska Fairbanks
907-474-7842
College of Fisheries and Ocean Sciences, Institute of Marine Sciences 120 O'Neill
Fairbanks
AK
99775-7220
USA
rrhopcroft@alaska.edu
pointOfContact
Petra H. Lenz
University of Hawaiʻi at Mānoa
808-956-8003
Pacific Biosciences Research Center (PBRC), Bekesy Laboratory of Neurobiology 1993 East-West Road
Honolulu
HI
96822
United States
petra@hawaii.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Cruise
DateTime
Station
Latitude
Longitude
NetNo
MaximumDepth
MinimumDepth
APHIAID
ScientificName
LifeStage
Abundance
MeanLength
MeanDryWeight
Biomass
Comment
General Oceanics flowmeters
MultiNet (MIDI)
theme
None, User defined
cruise id
ISO_DateTime_UTC
site
latitude
longitude
instrument
depth
taxon_code
species scientific name (binomial)
stage
abundance
length
dry_wgt_globec
wet_weight_biomass
comments
featureType
BCO-DMO Standard Parameters
Mechanical Flowmeter
MultiNet
instrument
BCO-DMO Standard Instruments
TXF15
TXF16
TXF17
service
Deployment Activity
Northern Gulf of Alaska
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.
Collaborative Proposal: Optimizing Recruitment of Neocalanus copepods through Strategic Timing of Reproduction and Growth in the Gulf of Alaska
https://osprey.bco-dmo.org/project/542182
Collaborative Proposal: Optimizing Recruitment of Neocalanus copepods through Strategic Timing of Reproduction and Growth in the Gulf of Alaska
<p>NSF abstract:</p>
<p>The Gulf of Alaska supports a diverse and productive marine community that includes many commercially important fishes. Toward the base of this food web are small planktonic crustaceans that serve as the primary food source for many of these fish, as well as seabirds and marine mammals. The copepod Neocalanus flemingeri is one of these crustaceans, and it experiences rapid population growth during each spring's algal, or phytoplankton, bloom. An apparent mismatch between the presence of the youngest stages of the copepod, or nauplii, in early winter and the unpredictable timing of the spring phytoplankton bloom several months later raises important questions about when females reproduce and how this relates to survival and growth of nauplii. Two types of dormancy, diapause in adult females and physiological quiescence in nauplii, may be the key to the success of this copepod species. Timing and duration of the egg-laying period by adult females is linked to emergence from diapause. In addition, nauplii may enter a state of physiological quiescence while food resources are low, resuming growth after phytoplankton levels increase. This research will address a long-standing goal of biological oceanographers to understand dormancy and its role in controlling population cycles in marine copepods. It will use new technologies in molecular biology called transcriptomics to catalog the messages used by the cells to control copepod life processes, in this case those related to dormancy in adults and nauplii. Undergraduate students and a postdoctoral investigator will be trained in interdisciplinary research, and students from Native Hawaiian and Native Alaskan groups will be targeted for participation. Fishing is a major industry in the Gulf of Alaska, and outreach will focus on communicating the role copepods play in marine ecosystems. New content, including images, will be generated for existing websites: the Seward Line long-term observation program, the Alaska Ocean Observing System and the Gulf Watch Alaska Program.</p>
<p>Recruitment to the Neocalanus flemingeri spring population is dependent on successful emergence from diapause followed by reproduction, survival, and growth of the next generation. Individual-based models have made significant progress in predicting population growth in calanoid copepods using food, temperature, and advection as key environmental factors. Few of these models include predictors for naupliar recruitment, however, because little is known about this part of the life cycle given sampling difficulties and the lack of biomarkers to evaluate physiological state. This study will leverage existing monitoring efforts to track the N. flemingeri population during the winter and early spring. The research team will combine laboratory and field approaches to determine duration and synchronization of reproduction in emerging females and strategies for naupliar survival during low food conditions. Zooplankton samples will be processed to enumerate nauplii to species and to determine physiological condition of both nauplii and adult females. Gene expression studies will develop molecular markers for female dormancy and reproductive readiness and for naupliar growth and possible dormancy, which in turn will be used to evaluate field collected individuals. This will be the first comprehensive study to combine molecular and traditional tools to connect diapausing adults, naupliar production, and the resulting spring population of copepodites.</p>
Neocalanus Gulf of Alaska
largerWorkCitation
project
eng; USA
oceans
Northern Gulf of Alaska
-147.995
-147.507
57.7883
60.5402
2015-09-20
2017-09-21
Gulf of Alaska; Seward Line
0
BCO-DMO catalogue of parameters from Neocalanus distribution, mean length, mean weight, abundance and biomass from the Gulf of Alaska , Fall 2015, 2016 and 2017
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/852916.rdf
Name: Cruise
Units: unitless
Description: <p>Cruise Designation RV Tiglax TXYY</p>
http://lod.bco-dmo.org/id/dataset-parameter/852917.rdf
Name: DateTime
Units: unitless
Description: <p>Date and time of sample collection mm/dd/yyyy hh:mm ( Local Time)</p>
http://lod.bco-dmo.org/id/dataset-parameter/852918.rdf
Name: Station
Units: unitless
Description: <p>The name of the sampling location</p>
http://lod.bco-dmo.org/id/dataset-parameter/852919.rdf
Name: Latitude
Units: decimal degrees
Description: <p>The latitude of the sampling location</p>
http://lod.bco-dmo.org/id/dataset-parameter/852920.rdf
Name: Longitude
Units: decimal degrees
Description: <p>The longitude of the sampling location</p>
http://lod.bco-dmo.org/id/dataset-parameter/852921.rdf
Name: NetNo
Units: unitless
Description: <p>The multinet number</p>
http://lod.bco-dmo.org/id/dataset-parameter/852922.rdf
Name: MaximumDepth
Units: meters (m)
Description: <p>The maximum depth of the gear deployment</p>
http://lod.bco-dmo.org/id/dataset-parameter/852923.rdf
Name: MinimumDepth
Units: meters (m)
Description: <p>The minimum depth of the gear deployment</p>
http://lod.bco-dmo.org/id/dataset-parameter/852924.rdf
Name: APHIAID
Units: unitless
Description: <p>The APHIA id number given to the identified organism (per worms <a href="http://www.marinespecies.org">www.marinespecies.org</a> as of 2020)</p>
http://lod.bco-dmo.org/id/dataset-parameter/852925.rdf
Name: ScientificName
Units: unitless
Description: <p>The scientific name of the identified organism</p>
http://lod.bco-dmo.org/id/dataset-parameter/852926.rdf
Name: LifeStage
Units: unitless
Description: <p>The life stage or copepodite stage of the organism. stages 1-5 copepodite stages 1-5 ; F- Female; M-male</p>
http://lod.bco-dmo.org/id/dataset-parameter/852927.rdf
Name: Abundance
Units: (#/m3)
Description: <p>The abundance of the organism</p>
http://lod.bco-dmo.org/id/dataset-parameter/852928.rdf
Name: MeanLength
Units: (um)
Description: <p>The mean prosome length of the organism</p>
http://lod.bco-dmo.org/id/dataset-parameter/852929.rdf
Name: MeanDryWeight
Units: (ug)
Description: <p>The mean dry weight of the organism</p>
http://lod.bco-dmo.org/id/dataset-parameter/852930.rdf
Name: Biomass
Units: (mgDW/m3)
Description: <p>The biomass of the organism</p>
http://lod.bco-dmo.org/id/dataset-parameter/852931.rdf
Name: Comment
Units: units
Description: <p>Notes or comments pertaining to the identification or condition of the organism</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
13850
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/cf302e29-9b82-4973-b955-809a95c3a893/content
download
https://doi.org/10.26008/1912/bco-dmo.852896.1
download
onLine
dataset
<p>Zooplankton samples were collected from the Gulf of Alaska (Seward Line) in September 2015, 2016 and 2017 using a vertically hauled MultiNet (0.25 m2 MIDI) equipped with a 505um mesh in 2015 and a 150 um mesh in 2016 and 2017. Depth strata sampled were 0-100m, 100-200m, 200-300m, 300-400 and 400-700m.&nbsp; The samples were immediately preserved in 10% formalin</p>
<p>For analysis each sample was poured into a sorting tray where large organisms, primarily shrimp and jelly fish, were removed. The sample was then sequentially split using a Folsom splitter until a subsample containing approximately 100 specimens of Neocalanus copepods was obtained. The individual organisms were identified to species, staged, and the prosome length was measured using a computer based program interfaced to a digitizing tablet . Dry weights were calculated from literature length- weight equations. Abundance and biomass were calculated for each taxon and tabulated using EXCEL</p>
Specified by the Principal Investigator(s)
<p>In EXCEL Abundance and biomass calculations were merged with the ship event logs for date.time, latitude and longitude and formatted for export&nbsp; (csv).</p>
<p>&nbsp;</p>
Specified by the Principal Investigator(s)
* Adjusted column names to comply with database requirements
* Biomass columns: value 0 set to NA after discussion with the submitter (no published length weight regression for the larger morph animal type, they did not want to apply a regression that would not accurately predict the biomass of the animal(s)).
Specified by BCO-DMO Data Managers
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
General Oceanics flowmeters
General Oceanics flowmeters
PI Supplied Instrument Name: General Oceanics flowmeters PI Supplied Instrument Description:General Oceanics flowmeters were employed to calculate volume of water filtered by the net Instrument Name: Mechanical Flowmeter Instrument Short Name:Mechanical Flowmeter Instrument Description: A mechanical flow meter is used with plankton tows to determine the volume of water which flows through the net. Flow meters are also used in rivers, estuaries, canals, sewer outfalls, pipes, and harbor entrances to determine water velocity and flow distance information.
MultiNet (MIDI)
MultiNet (MIDI)
PI Supplied Instrument Name: MultiNet (MIDI) PI Supplied Instrument Description:0.25m2 MultiNet (MIDI) equipped with a 150 or 505 um mesh Instrument Name: MultiNet Instrument Short Name:MultiNet Instrument Description: The MultiNet© Multiple Plankton Sampler is designed as a sampling system for horizontal and vertical collections in successive water layers. Equipped with 5 or 9 net bags, the MultiNet© can be delivered in 3 sizes (apertures) : Mini (0.125 m2), Midi (0.25 m2) and Maxi (0.5 m2). The system consists of a shipboard Deck Command Unit and a stainless steel frame to which 5 (or 9) net bags are attached by means of zippers to canvas. The net bags are opened and closed by means of an arrangement of levers that are triggered by a battery powered Motor Unit. The commands for actuation of the net bags are given via single or multi-conductor cable between the Underwater Unit and the Deck Command Unit. Although horizontal collections typically use a mesh size of 300 microns, mesh sizes from 100 to 500 may also be used. Vertical collections are also common. The shipboard Deck Command Unit displays all relevant system data, including the actual operating depth of the net system. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/NETT0099/
Cruise: TXF15
TXF15
R/V Tiglax
Community Standard Description
International Council for the Exploration of the Sea
R/V Tiglax
vessel
TXF15
Russell R. Hopcroft
University of Alaska Fairbanks
https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/seward.html
Report describing TXF15
Cruise: TXF16
TXF16
R/V Tiglax
Community Standard Description
International Council for the Exploration of the Sea
R/V Tiglax
vessel
TXF16
Russell R. Hopcroft
University of Alaska Fairbanks
https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/seward.html
Report describing TXF16
Cruise: TXF17
TXF17
R/V Tiglax
Community Standard Description
International Council for the Exploration of the Sea
R/V Tiglax
vessel
TXF17
Russell R. Hopcroft
University of Alaska Fairbanks
https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/seward.html
Report describing TXF17
R/V Tiglax
Community Standard Description
International Council for the Exploration of the Sea
R/V Tiglax
vessel