CE11008 Northwest Herring Acoustic Survey

This survey was conducted by the Marine Institute on-board the RV Celtic Explorer in summer 2011 as part of the North West Herring Acoustic Survey. The northwest and west coast (ICES Divisions VIaS and VIIb) herring acoustic survey programme was first established in 1994. The summer 2011 survey represents the fourth in the new time series, starting in 2008. The survey was coordinated through the ICES Working Group of International Pelagic Surveys (WGIPS). Survey data on stock numbers at age are submitted to the ICES Herring Assessment Working Group (HAWG) and used in the annual stock assessment process. The Irish component of the survey was carried out to cover: 1) the regions around western Ireland 2) the regions west of Scotland that are usually covered by Marine Scotland and 3) northern sector of the Irish Sea survey. The survey was coordinated through the ICES Working Group of International Pelagic Surveys (WGIPS). Combined survey data on herring distribution, abundance and age are used to provide a measure of the relative abundance of herring within the Malin shelf stock complex. Survey data on stock numbers at age are submitted to the ICES Herring Assessment Working Group (HAWG) and used in the annual stock assessment process. The northwest and west coast (ICES Divisions VIaS and VIIb) herring stock is composed of two spawning components, autumn and winter spawners. Spawning covers a large geographical area and extends over a 4-month period from late September through to late March. Traditionally, fishing effort has been concentrated on spawning and pre-spawning aggregations. The autumn spawning component, which mostly occurs within VIIb and VIaS, feeds along the shelf break area to the west of the spawning grounds. The winter spawning component is found further north in VIaS. In VIaS, summer distribution extends from close inshore to the shelf break. Components of the winter spawning fish are known to undertake northward feeding migration into VIaN before returning in the winter to spawn along the Irish coast. This survey, carried out between 18th June and 07th July, focused on the northwest and west coast of Ireland and the west coast of Scotland. The survey track started in the region south of the Hebrides and worked progressively southwards after surveying the Minches region. To keep in line with existing survey methodology acoustic data collection was only undertaken during daylight hours (04:00 and 00:00). A systematic parallel transect design was adopted for the majority of the survey, with a randomised start point. Transects were positioned running perpendicular to the lines of bathymetry where possible. The acoustic data were collected using the Simrad ER60 scientific echosounder. For biological sampling, a single pelagic midwater trawl was used. 26 hauls were carried out. All components of the catch from the trawl hauls were sorted and weighed; fish and other taxa were identified to species level. Oceanographic stations were carried out during the survey at predetermined locations along the track. Marine mammal and seabird observations were also conducted during daylight hours. The aim of the acoustic survey is to determine the relative abundance of the target species, herring. This information is then used to determine catch rates and management advice for the following year. Other objectives include collecting physical oceanography data and visual surveys for marine mammals and seabirds., and collecting Boarfish (Capros acer) target strength measurements and samples where possible.

Simple

Date (Publication)
2018-01-04
Date (Revision)
2023-06-01
Date (Creation)
2018-01-04
Citation identifier
ie.marine.data:dataset.1735
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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Aggregate Datasetindentifier
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Association Type
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Initiative Type
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Aggregate Datasetindentifier
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Association Type
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Aggregate Datasetindentifier
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Association Type
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Initiative Type
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Spatial representation type
Grid
Language
English
Begin date
2011-06-18
End date
2011-07-08
N
S
E
W
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Reference system identifier
INSPIRE RS registry / http://www.opengis.net/def/crs/EPSG/0/3857
Distribution format
Name Version

CSV Underway 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=%22CE11008%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.gsi.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.1735 XML
Metadata language
English
Hierarchy level
Collection session
Date stamp
2025-02-21T18:15:01.074534Z
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

Spatial extent

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Keywords



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