Larval Fish Identification from Cruises at the Hancock Seamounts, TC-84-05 and TC-85-01
Pacific Islands Fisheries Science Center
Data Set
(DS)
| ID: 8792
| Published / External
Created: 2009-01-05
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Last Modified: 2023-08-25
Project (PRJ) | ID: 8062
ID: 8792
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | Larval Fish Identification from Cruises at the Hancock Seamounts, TC-84-05 and TC-85-01 |
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Short Name | |
* Status | Completed |
Creation Date | |
Revision Date | |
• Publication Date | 1992-05-05 |
* » Abstract |
Ichthyoplankton sampling was conducted aboard the NOAA vessel Townsend Cromwell in 9-29 July 1984 and 4-10 February 1985. Collectors included George Boehlert, James Uchiyama, Robert Humphreys, Randolph Chang, Alan Everson, Victor Honda, Bert Kikkawa, Raymond Clarke, Thomas Kazama, and Michael Seki. Two locations were sampled intensively during these cruises; one location was over the seamount summit ("seamount" location); the other location was 20 km west, over a water depth of approximately 1,800-4,750 m ("reference" location). Ichthyoplankton was sampled with an opening-closing Tucker trawl equipped with three nets and a double-release mechanism operated by messengers. The nets were 0.333 mm mesh (Nitex) with a 1.4 m2 mouth area. Ship speed was adjusted over tow speeds of about 0.9-1.1 m/second to maintain a wire angle at 45?. At this angle, the effective mouth area of the Tucker trawl is 1.0 m2 ; tow depths were estimated as a function of wire angle and meters of wire out. Four discrete depth strata (0-25, 25-50, 50-100, and 100-200 m) were sampled. Replicate tows at each depth comprised a sampling series. To sample at discrete depths without contamination by animals from shallower depths, the trawl was lowered with the first net open, and the second net was opened for the desired sampling time and then closed, and the trawl was retrieved with the third net open. To sample the two shallower strata, the trawl was lowered to 50 m, the second net was opened at that depth, and then the third net was opened at 25 m to sample the shallow stratum. For the two deeper strata, the second net was closed at the upper end of each stratum, and the trawl was retrieved with the third net open. Thus, a full set of duplicate samples for each depth stratum required six deployments of the trawl. The summer cruise had two series of night sampling (9-10 and 28-29 July) and one of day sampling (14-15 July); the winter cruise had one series of day and night sampling (4-10 February 1985). Each net was fished for 18 minutes and tows were conducted in a stepped oblique fashion, in an attempt to sample depths equally within each stratum. The volume of water filtered was estimated with calibrated General Oceanics flowmeters mounted in the center of each net. Plankton samples were preserved at sea in a 4% buffered formaldehyde seawater mixture. In the laboratory, plankton volume was determined from a known total volume minus the remaining water volume after the plankton were strained (Omori and Ikeda 1984); gelatinous plankton and fishes larger than approximately 50 mm were removed before the volume was determined. Whole samples were sorted for fish eggs, larvae, and squid para larvae under a dissecting microscope. Larval fishes were identified to the lowest possible taxonomic level by Bruce Mundy. |
* Purpose |
To compare ichthyoplankton species composition, distribution, and abundance in the Hancock Seamounts. |
Notes |
3,072 records |
Other Citation Details | |
• Supplemental Information |
The data are available in Boehlert & Mundy (1992. Distribution of ichthyoplankton around Southeast Hancock Seamount, central North Pacific, in summer 1984 and winter 1985: data report. NOAA Tech. Memo. NMFS, NOAA-TM-NMFSSWFSC-176: 1?109). SOURCE ID: RB006 |
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Keywords
Theme Keywords
Thesaurus | Keyword |
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None | distribution |
None | eez |
None | FRMD |
None | ichthyoplankton |
None | LHP |
None | PIFSC |
None | plankton |
None | seamount |
None | Townsend Cromwell |
None | tucker trawl |
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* Spatial Keywords
Thesaurus | Keyword |
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None | Hancock Seamounts |
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Physical Location
• » Organization | Pacific Islands Fisheries Science Center |
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• » City | Honolulu |
• » State/Province | HI |
• Country | USA |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | Oracle Database |
• Maintenance Frequency | None Planned |
Maintenance Note | |
» Data Presentation Form | Table (digital) |
• Entity Attribute Overview | |
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Data Set Credit |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2019-04-01 |
Date Effective To | 2023-05 |
Person | O'Malley, Joseph M |
Address |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address | joseph.omalley@noaa.gov |
Phone | (808)725-5741 |
Fax | |
Mobile | |
URL | |
Business Hours | |
Contact Instructions |
Contact via email |
* » Support Role | Data Steward |
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* » Date Effective From | 2015 |
Date Effective To | 2019-03-31 |
Person | Miyamoto, Brent M |
Address |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address | brent.miyamoto@noaa.gov |
Phone | 808-725-5340 |
Fax | |
Mobile | |
URL | |
Business Hours | 8:15 a.m. - 5:15 p.m. HST |
Contact Instructions |
* » Support Role | Distributor |
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* » Date Effective From | 2015 |
Date Effective To | |
Organization | Pacific Islands Fisheries Science Center (PIFSC) |
Address |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address | pifsc.info@noaa.gov |
Phone | 808-725-5360 |
Fax | |
Mobile | |
URL | https://www.pifsc.noaa.gov |
Business Hours | 8:00 a.m. - 4:30 p.m. |
Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2019-04-01 |
Date Effective To | 2023-05 |
Person | O'Malley, Joseph M |
Address |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address | joseph.omalley@noaa.gov |
Phone | (808)725-5741 |
Fax | |
Mobile | |
URL | |
Business Hours | |
Contact Instructions |
Contact via email |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2015 |
Date Effective To | 2018-12-31 |
Person | Tagami, Darryl T |
Address |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address | darryl.tagami@noaa.gov |
Phone | (808)725-5745 |
Fax | |
Mobile | |
URL | |
Business Hours | 8:00 AM - 4:30 PM |
Contact Instructions |
* » Support Role | Point of Contact |
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* » Date Effective From | 2023-08 |
Date Effective To | |
Person | Schemmel, Eva M |
Email Address | eva.schemmel@noaa.gov |
Phone | |
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URL | |
Business Hours | |
Contact Instructions |
Contact via email. |
* » Support Role | Point of Contact |
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* » Date Effective From | 2019-04-01 |
Date Effective To | 2023-05 |
Person | O'Malley, Joseph M |
Address |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address | joseph.omalley@noaa.gov |
Phone | (808)725-5741 |
Fax | |
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URL | |
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Contact via email |
* » Support Role | Point of Contact |
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* » Date Effective From | 1988-01-01 |
Date Effective To | 2018-12-31 |
Person | Mundy, Bruce C |
Address |
1845 Wasp Blvd. Honolulu, HI 96818 USA |
Email Address | bruce.mundy@noaa.gov |
Phone | (808)725-5374 |
Fax | |
Mobile | |
URL | |
Business Hours | |
Contact Instructions |
Email with questions. |
* » Support Role | |
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Extents
Currentness Reference | Ground Condition |
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Extent Group 1
Extent Description |
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Extent Group 1 / Geographic Area 1
* » W° Bound | 178 |
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* » E° Bound | 180 |
* » N° Bound | 31 |
* » S° Bound | 29 |
* » Description |
Hancock Seamounts |
Extent Group 1 / Vertical Extent
EPSG Code | |
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Vertical Minimum | |
Vertical Maximum |
Extent Group 1 / Time Frame 1
* » Time Frame Type | Range |
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* » Start | 1984-07-09 |
End | 1984-07-29 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
TC 84-05 |
Extent Group 1 / Time Frame 2
* » Time Frame Type | Range |
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* » Start | 1985-02-04 |
End | 1985-02-16 |
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Alternate End As Of Info | |
Description |
TC 85-01 |
Spatial Information
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Access Information
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Data License Statement | |
* » Security Class | Unclassified |
* Security Classification System | |
Security Handling Description | |
• Data Access Policy | |
» Data Access Procedure |
Send written request to PIFSC and get approval by the PIFSC data owner. |
• » Data Access Constraints |
None |
• Data Use Constraints | |
Metadata Access Constraints |
None |
Metadata Use Constraints |
None |
Distribution Information
Start Date | 2019-04-25 |
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End Date | Present |
» Download URL | https://oceanwatch.pifsc.noaa.gov/xfer/PIFSC_PIRO_bulk_data_download_InPort_8792.tgz |
Distributor | Pacific Islands Fisheries Science Center (PIFSC) (2015 - Present) |
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Issues
Issue Date | 2019-01-30 |
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Author | Miyamoto, Brent M |
Issue |
Miscoded species codes corrections made: 1) 6477 02 6477 to 6477 02 0523 - Euphausia gibboides - TC 85-01, station number 107, row number 47 2) 6477 02 0526 to 6477 02 0523 - Euphausia gibboides - TC 84-05, station number 106, row number 14 and TC 85-01, station number 108, row number 33 3) 8456 02 0400 to 8546 02 0400 - Scopelberyx sp. - TC 85-01, station number 108, row number 19 4) 6483 02 0806 to 6482 01 0806 - Gennedas propinquus - TC 85-01, station number 110, row number 21 5) 6483 02 0800 to 6482 01 0800 - Gennedas sp. - TC 85-01, station number 110, row number 22 6) 8531 23 1001 to 8531 32 1001 - Opostomias mistuii - TC 85-01, station number 132, row number 8 |
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Technical Environment
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» Quality Control Procedures Employed |
QC review prior to data entry. Further QC after data entry. |
Data Management
» Have Resources for Management of these Data Been Identified? | Yes |
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» Approximate Percentage of Budget for these Data Devoted to Data Management | Unknown |
» Do these Data Comply with the Data Access Directive? | Yes |
» Is Access to the Data Limited Based on an Approved Waiver? | No |
» If Distributor (Data Hosting Service) is Needed, Please Indicate | |
» Approximate Delay Between Data Collection and Dissemination | 1 Year |
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed | |
» Actual or Planned Long-Term Data Archive Location | NCEI-MD |
» Approximate Delay Between Data Collection and Archiving | 1 Year |
» How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive? |
PIFSC ITS performs regular backups of shared drives. |
Lineage
» Lineage Statement |
Data was collected in the field by PIFSC staff, and entered in table format into electronic spreadsheets. |
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Acquisition Information
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Child Items
Rubric scores updated every 15m
Score | Type | Title |
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Entity (ENT) | RB006AA2_V | |
Entity (ENT) | RB006AA2_V_SPECIES_CODE | |
Related Items
Item Type | Relationship Type | Title |
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Catalog Details
Catalog Item ID | 8792 |
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Metadata Record Created By | Brent M Miyamoto |
Metadata Record Created | 2009-01-05 14:43+0000 |
Metadata Record Last Modified By | Brent M Miyamoto |
» Metadata Record Last Modified | 2023-08-25 22:39+0000 |
Metadata Record Published | 2019-07-23 |
Owner Org | PIFSC |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2019-07-23 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2020-07-23 |
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