Atlantic and horse mackerel egg survey from NE Atlantic May 2016

This dataset contains measurements of temperature, salinity, raised/non-raised mackerel egg numbers, raised/non-raised horse mackerel egg numbers as well as adult fish total length, weight, maturity and sex. Data were obtained on the RV Bjarni Sæmundsson which sampled North of Scotland to Iceland. The project altogether obtained data along the Portuguese coast from February and continued until July to the waters west of Scotland. The egg survey was carried out from the 02/05/2016 to 13/05/2016 with the adult mackerel sampling taking place on 11/05/2016. A total of 4 pelagic trawl hauls were carried out to collect adult mackerel samples using a pelagic WB trawl. Sampling of the fish eggs was carried out with a High Speed Plankton Sampler Gulf VII, which had a 280 micron mesh sized net and an opening diameter of 20cm. A small skrips-depressor of 30 kg was also attached to the sampler. Water filtered during each haul was measured using an internal Valeport electronic flowmeter. An external flowmeter was in turn mounted on the frame, as well as a Seabird 911 plus CTD attached with an altimeter, which measured depth, temperature and salinity. Samples were sorted for fish eggs using the spray method and mackerel eggs were staged according to the sampling protocol. For quality assurance, 10% of the samples were checked and sorted again. All eggs were counted and identified to species level. The data were obtained as a part of an international Atlantic survey, carried out by 10 different European institutes to monitor the spatial and seasonal distribution of Atlantic mackerel and horse mackerel. Planning and coordination of the survey was made within the ICES Working Group for Mackerel and Horse Mackerel Egg Surveys (WGMEGS). In 2016 the following countries participated in this survey: The Faroes, Denmark, Germany, Ireland, Norway, Portugal, Scotland, Spain, the Netherlands and Iceland. The data present here has been obtained by Marine Research Institute in Iceland.

Simple

Alternate title

British Oceanographic Data Centre record 1048_MRI160146_MackerelEggSurvey
Date (Publication)
2017-10-03
Date (Creation)
2016-08-18
Date (Revision)
2019-09-03
Citation identifier
http://www.bodc.ac.uk/ / EDMED6556
Point of contact
Organisation name Individual name Electronic mail address Role

Marine Research Institute

Unknown

hafro@hafro.is

Originator

British Oceanographic Data Centre

enquiries@bodc.ac.uk

Custodian
Maintenance and update frequency
As needed

MEDIN metadata record availability

Vertical Coverages

SeaDataNet PDV

INSPIRE themes
Use limitation

Data usage restrictions are unknown
Access constraints
Other restrictions
Other constraints

The access conditions to the data are not known
Language
English
Topic category
  • Biota
  • Oceans
N
S
E
W
thumbnail




Begin date
2016-05-02
End date
2016-05-14
Reference system identifier
OGP / urn:ogc:def:crs:EPSG::4326
Distribution format
    Distributor contact
    Organisation name Individual name Electronic mail address Role

    British Oceanographic Data Centre

    enquiries@bodc.ac.uk

    		Distributor
    Hierarchy level
    Dataset
    Statement

    unknown

    Metadata

    File identifier
    d64c94b18a4058afa710570310d148d2 XML
    Metadata language
    English
    Hierarchy level
    Dataset
    Date stamp
    2019-09-17T06:31:46
    Metadata standard name

    MEDIN Discovery Metadata Standard
    Metadata standard version

    Version 2.3.8
    Metadata author
    Organisation name Individual name Electronic mail address Role

    Marine Research Institute

    Björn Gunnarsson

    hafro@hafro.is

    		Point of contact
     
     

    Overviews

    Spatial extent

    thumbnail

    Keywords



    Provided by

    Share on social sites

    Access to the catalogue