• Login
    View Item 
    •   Marine Institute Open Access Repository
    • Marine Institute Community of Research Publications
    • Survey & Cruise Reports
    • Acoustic Surveys
    • View Item
    •   Marine Institute Open Access Repository
    • Marine Institute Community of Research Publications
    • Survey & Cruise Reports
    • Acoustic Surveys
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of Marine OARCommunitiesPublication DateAuthorsTitlesSubjectsThis CollectionPublication DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Statistics

    Display statistics

    Northwest Herring Acoustic Survey Report 21 June – 11 July, 2012

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    NWHAS Cruise Report 2012 Final.pdf
    Size:
    2.346Mb
    Format:
    PDF
    Download
    Author
    Nolan, Cormac
    O'Donnell, Ciaran
    Campbell, Andrew
    Sullivan, Mairead
    Mullins, Eugene
    Keyword
    CE12009
    Date
    2012
    Publisher
    Marine Institute
    
    Metadata
    Show full item record
    Abstract
    The northwest and west coast (ICES Divisions VIaS & VIIb, c) herring acoustic survey programme was first established in 1994. The summer 2012 survey represents the fifth in the new time series (est. in 2008). The Irish component 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 (AFBI). 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 & 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 (Molloy et al, 2000). 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.
    URI
    http://catalog.marine.ie/geonetwork/srv/en/main.home; http://hdl.handle.net/10793/821
    Description
    Use the URI link below to search the Marine Institute Data Discovery Catalogue for datasets relevant to this report.
    Citation
    Nolan, C., O'Donnell, C., Campbell, A., Sullivan, M. & Mullins, E. "Northwest Herring Acoustic Survey Report 21 June – 11 July, 2012", Marine Institute 2012
    Collections
    Acoustic Surveys

    entitlement

     
    DSpace software (copyright © 2002 - 2022)  DuraSpace
    Quick Guide | Contact Us | MI Privacy Policy
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.