CE17004 Blue Whiting Acoustic Survey

An acoustic survey targeting blue whiting (Micromesistius poutassou) spawning and post spawning aggregations in the north east Atlantic in 2017. Spawning takes place from January through to April along the shelf edge from the southern Porcupine Bank area northwards to the Faroe/Shetland Ridge including offshore areas as the Rosemary, Hatton and Rockall Banks. Peak spawning occurs between mid-March and mid April and acoustic surveys are timed to occur during this phase. To facilitate a more coordinated spatio-temporal approach to the survey participating countries meet annually to discuss survey methods and define effort allocation at the ICES led Working Group International Pelagic Surveys (WGIPS). The survey covered the core spawning area of blue whiting to the west of Scotland and the Western Isles. Coverage extended from the shelf slopes (250m) westward into the Rockall Trough. The survey was carried out in continuity from north to south and from south to north The survey was part of an international collaborative survey using the vessels RV Celtic Explorer (Ireland), RV Tridens (Netherlands), FV Kings Bay (Norway) and the RV Magnus Heinason (Faroes). Transect design and effort allocation was pre-agreed for each vessel. A parallel transect design was used to allow transect interlacing in co-surveyed target areas (east-west orientation). Acoustic data were collected using the Simrad ER60 scientific echosounder. Cruising speed was maintained at a maximum of 10 Kts (knots) where possible. Biological sampling was done using a single pelagic midwater trawl.All components of the catch from the trawl hauls were sorted and weighed; fish and other taxa were identified to species level. One marine mammal observer (MMO) was present on board to record visual observations of marine mammals. Passive Acoustic Monitoring (PAM) for cetaceans was also conducted using a towed hydrophone array which was deployed on a 200 m cable and towed behind the vessel. Seabird surveys were also carried out. Oceanographic data on temperature, depth and salinity (CTD) were collected at set stations. 1. Collect acoustic data on blue whiting spawning aggregations 2. Collect biological samples from directed trawling on fish echotraces to determine age structure and maturity state of survey stock 3. Collect CTD data 4. Conduct visual abundance surveys of marine mammals and seabirds in conjunction with passive acoustic monitoring of marine mammals

Simple

Date (Publication)
2017-11-10
Date (Revision)
2018-11-29
Date (Creation)
2017-11-10
Citation identifier
ie.marine.data:dataset.871
Point of contact
Organisation name Individual name Electronic mail address Role

Marine Institute

datarequests@marine.ie

Originator
Maintenance and update frequency
As needed
SeaVoX Device Catalogue
SeaDataNet device categories
ICES Platform Categories
OGC Simple Feature Types
SeaVoX Platform Categories
Marine Strategy Framework Directive indicators 2010/477/EU
SeaDataNet Parameter Discovery Vocabulary
Marine Institute Dataset Communities
Use limitation

While every effort is made in preparing the dataset no responsibility is accepted by or on behalf of the Marine Institute for any errors, omissions or misleading information. The Marine Institute accepts no responsibility for loss or damage occasioned or claimed to have been occasioned, in part or in full, as a consequence of any person acting, or refraining from acting as a result of a matter contained in this datasets or as a consequence of using this dataset for any purpose whatsoever.

Use limitation

A Creative Commons (CC) license is one of several public copyright licenses that enable the free distribution of an otherwise copyrighted work. A CC license is used when an author wants to give people the right to share, use, and build upon a work that they have created. Under Creative Commons CC BY 4.0 the following is granted: Rights Share — copy and redistribute the material in any medium or format; Adapt — remix, transform, and build upon the material for any purpose, even commercially. The licensor cannot revoke these freedoms as long as you follow the license terms. Requirements Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Access constraints
CC%20BY%204.0
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Spatial representation type
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Language
English
Begin date
2017-03-21
End date
2017-04-02
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Reference system identifier
INSPIRE RS registry / http://www.opengis.net/def/crs/EPSG/0/3857
Distribution format
Name Version

CSV CTD Data

CSV Underway Data
OnLine resource
Protocol Linkage Name

WWW:DOWNLOAD-1.0-http--download

 		https://erddap.marine.ie/erddap/tabledap/IMI_CTD.csv?midgid%2Cctd_filename%2Csdn_local_cdi_id%2Csdn_csrref_global%2CSeaVox_SeaArea%2CSeaVox_SeaArea_urn%2CICES_ecoregion%2CICES_area%2CICES_statistical_rectangle%2CMSFD_region%2CMSFD_subregion%2CWFD_waterbody_type%2CWFD_waterbody_name%2CSWD_shellfish_waterbody%2Ccomp4_assessment_area_name%2Ctransect%2Cstation_id%2Csite_bathy_depth%2Cplatform_name%2Cices_platform_code%2Ccruise%2Cexpocode%2Cctd_model_name%2Cctd_model_urn%2Cyear%2Cmonth%2Ctime%2Cdepth%2Clatitude%2Clongitude%2Cpressure%2Ctemperature%2Csalinity%2Csigmat%2Caverage_sound_velocity%2Coxygen_mll%2Coxygen_umolkg%2Coxygen_sat%2Cdepth_qc%2Cpressure_qc%2Ctemperature_qc%2Csalinity_qc%2Csigmat_qc%2Caverage_sound_velocity_qc%2Coxygen_mll_qc%2Coxygen_umolkg_qc%2Coxygen_sat_qc&cruise=%22CE17004%22

CSV CTD Data
OnLine resource
Protocol Linkage Name

WWW:DOWNLOAD-1.0-http--download

 		https://erddap.marine.ie/erddap/tabledap/imipublicunderway.csv?midgid%2Csdn_local_cdi_id%2Csdn_edmed_global%2Csdn_csrref_global%2Cplatform_name%2Cices_platform_code%2Ccruise%2Cexpocode%2Cyear%2Cmonth%2Ctime%2Cdepth%2Clatitude%2Clongitude%2Cspeed%2Cpitch%2Croll%2Cheave%2Ctrue_heading%2Cbathymetric_depth%2Cconductivity%2Csalinity%2Ctemperature%2Cfluoresence_raw%2Catmospheric_pressure%2Cair_temperature%2Crelative_humidity%2Crelative_wind_speed%2Crelative_wind_direction%2Ctrue_wind_speed%2Ctrue_wind_direction%2Cspeed_qc%2Cpitch_qc%2Croll_qc%2Cheave_qc%2Ctrue_heading_qc%2Cbathymetric_depth_qc%2Cconductivity_qc%2Csalinity_qc%2Ctemperature_qc%2Cfluoresence_raw_qc%2Catmospheric_pressure_qc%2Cair_temperature_qc%2Crelative_humidity_qc%2Crelative_wind_speed_qc%2Crelative_wind_direction_qc%2Ctrue_wind_speed_qc%2Ctrue_wind_direction_qc&cruise=%22CE17004%22

CSV Underway Data
OnLine resource
Protocol Linkage Name

WWW:LINK-1.0-http--link

 		http://www.marine.ie
OnLine resource
Protocol Linkage Name

WWW:LINK-1.0-http--link

 		https://www.marine.ie/Home/site-area/areas-activity/fisheries-ecosystems/acoustic-surveys
Hierarchy level
Dataset

Conformance result

Title

Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication)
2010-12-08
Explanation

See the referenced specification
Pass
Yes
Statement

Data supplied by Marine Institute.

Metadata

File identifier
ie.marine.data:dataset.871 XML
Metadata language
English
Hierarchy level
Collection session
Date stamp
2025-02-21T18:12:56.790883Z
Metadata standard name

ISDI Metadata Profile
Metadata standard version

1.2
Metadata author
Organisation name Individual name Electronic mail address Role

Marine Institute

datarequests@marine.ie

Point of contact
 
 

Overviews

overview

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