Data

REH200901 - FV Rehua Biological Data

Australian Ocean Data Network
CSIRO O&A, Information & Data Centre (Point of contact) CSIRO Oceans & Atmosphere - Hobart (Associated with) Lewis, Mark (Point of contact)
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/0596d2cc-65a0-6289-e053-08114f8c6b28&rft.title=REH200901 - FV Rehua Biological Data&rft.identifier=Anzlic Identifier: ANZCW0306014442&rft.publisher=Australian Ocean Data Network&rft.description=Biological data collected by FV Rehua during the transit from NZ to Devonport. Samples were collected with MIDOC net fitted to commercial trawl nets. In June 2009 scientific sampling of the Tasman Sea micronekton was carried out from a 65 metre factory freezer vessel, the FV Rehua, The voyage took place from Nelson New Zealand on the 17th 2009 June arriving in Devonport (Tasmania), Australia on the 22th June 2009. During the five day transit the vessel was under charter from Petuna Sealord to CSIRO Marine and Atmospheric Research for a total of 24 hrs. The charter time was approximately divided into eight three-hour deep-water deployments that formed three sets of day/night experiments.Three main sampling instruments were used: (1) Sampling of micronekton (primarily biota < 20 cm) was made from 1000 m depth to the surface in 5 sets of equally spaced (200 metre) strata using a fine-mesh multiple opening closing net system (MIDOC). This system was fitted to either the vessel's midwater or demersal commercial net. (2) The digitised return signal from the vessel's 38 kHz Simrad ES60 echosounder was logged for the duration of the voyage. This will allow us to map the along-transect acoustic reflectivity at 38 kHz of the Tasman Sea basin from the surface down to 1500 metres. (3) An Acoustic-Optically System (AOS) was attached to the headline of the demersal net to measure the acoustic reflectivity of individual biota at two frequencies (38 and 120 kHz) and record concurrent optical images using digital SLR still cameras and PAL video system. The AOS was deployed vertically down to 1000 metres depths on two occasions. On four occasions it was attached to the headline of the demersal net that had been fitted with the MIDOC cod-end.Progress Code: completedMaintenance and Update Frequency: notPlannedStatement: Original field data&rft.creator=Anonymous&rft.date=2014&rft.coverage=westlimit=150.9; southlimit=-40.93; eastlimit=166.74; northlimit=-40.82&rft.coverage=westlimit=150.9; southlimit=-40.93; eastlimit=166.74; northlimit=-40.82&rft.coverage=uplimit=0; downlimit=-1500&rft.coverage=uplimit=0; downlimit=-1500&rft_rights=Release with the permission of the custodian&rft_subject=biota&rft_subject=Earth Science | Agriculture | Agricultural Aquatic Sciences | Fisheries&rft_subject=Earth Science | Biological Classification | Animals/Vertebrates | Fish&rft_subject=Earth Science | Biosphere | Aquatic Ecosystems | Demersal Habitat&rft_subject=Earth Science | Oceans | Ocean Acoustics | Acoustic Reflectivity&rft_subject=Cameras&rft_subject=Cameras - Still - Underwater&rft_subject=Cameras - Video - Underwater&rft_subject=Demersal Trawls&rft_subject=Midwater Trawls&rft_subject=Phytoplankton Nets&rft_subject=Plankton Nets/Drop Nets&rft_subject=Trawls&rft_subject=Regional Seas | Tasman Sea&rft_subject=Research Voyage: REH 1/2009&rft_subject=Acoustic Survey Blue Grenadier 2008&rft_subject=Vessel Data: Catch (by voyage)&rft_subject=Ship: Rehua&rft_subject=Macruronus novaezelandiae&rft.type=dataset&rft.language=English Access the data
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Biological data collected by FV Rehua during the transit from NZ to Devonport. Samples were collected with MIDOC net fitted to commercial trawl nets. In June 2009 scientific sampling of the Tasman Sea micronekton was carried out from a 65 metre factory freezer vessel, the FV Rehua, The voyage took place from Nelson New Zealand on the 17th 2009 June arriving in Devonport (Tasmania), Australia on the 22th June 2009. During the five day transit the vessel was under charter from Petuna Sealord to CSIRO Marine and Atmospheric Research for a total of 24 hrs. The charter time was approximately divided into eight three-hour deep-water deployments that formed three sets of day/night experiments.

Three main sampling instruments were used:

(1) Sampling of micronekton (primarily biota < 20 cm) was made from 1000 m depth to the surface in 5 sets of equally spaced (200 metre) strata using a fine-mesh multiple opening closing net system (MIDOC). This system was fitted to either the vessel's midwater or demersal commercial net.

(2) The digitised return signal from the vessel's 38 kHz Simrad ES60 echosounder was logged for the duration of the voyage. This will allow us to map the along-transect acoustic reflectivity at 38 kHz of the Tasman Sea basin from the surface down to 1500 metres.

(3) An Acoustic-Optically System (AOS) was attached to the headline of the demersal net to measure the acoustic reflectivity of individual biota at two frequencies (38 and 120 kHz) and record concurrent optical images using digital SLR still cameras and PAL video system. The AOS was deployed vertically down to 1000 metres depths on two occasions. On four occasions it was attached to the headline of the demersal net that had been fitted with the MIDOC cod-end.

Lineage

Progress Code: completed
Maintenance and Update Frequency: notPlanned
Statement: Original field data

Notes

Credit
Tim Ryan
Credit
Mark Lewis
Credit
Caroline Sutton
Credit
Rudy Kloser

Data time period: 2009-06-17 to 2009-06-22

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166.74,-40.82 166.74,-40.93 150.9,-40.93 150.9,-40.82 166.74,-40.82

158.82,-40.875

text: westlimit=150.9; southlimit=-40.93; eastlimit=166.74; northlimit=-40.82

text: uplimit=0; downlimit=-1500

Subjects
Acoustic Survey Blue Grenadier 2008 | Cameras | Cameras - Still - Underwater | Cameras - Video - Underwater | Demersal Trawls | Earth Science | Agriculture | Agricultural Aquatic Sciences | Fisheries | Earth Science | Biological Classification | Animals/Vertebrates | Fish | Earth Science | Biosphere | Aquatic Ecosystems | Demersal Habitat | Earth Science | Oceans | Ocean Acoustics | Acoustic Reflectivity | Macruronus novaezelandiae | Midwater Trawls | Phytoplankton Nets | Plankton Nets/Drop Nets | Regional Seas | Tasman Sea | Research Voyage: REH 1/2009 | Ship: Rehua | Trawls | Vessel Data: Catch (by voyage) | biota |

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Other Information
REH200801. FV Rehua Biological Data (Data Link)

url : https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/bc1b3741-e231-5039-e044-00144f7bc0f4

REH200801. FV Rehua ES60 Acoustic Data (Data Link)

url : https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/8a45c91e-a16d-4be3-af44-caa4c59a9c0e

REH200805 FV Rehua ES60 Acoustic Data (Data Link)

url : https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/6e15404a-1758-4ee1-b7a1-d4eb20ecb8ed

Identifiers
  • Local : Anzlic Identifier: ANZCW0306014442
  • Local : Marlin Record Number: 14442
  • global : 0596d2cc-65a0-6289-e053-08114f8c6b28