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<oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/">HERAS - 0918S - Herring acoustic survey - 2018 - North sea and west of Scotland</dc:title>
  <dc:type xmlns:dc="http://purl.org/dc/elements/1.1/">dataset</dc:type>
  <dc:identifier xmlns:dc="http://purl.org/dc/elements/1.1/">https://portal.medin.org.uk/portal/start.php?tpc=012_Marine_Scotland_FishDAC_12241</dc:identifier>
  <dc:description xmlns:dc="http://purl.org/dc/elements/1.1/">Objectives:
To conduct an acoustic survey to estimate the abundance and distribution of herring in the north western North Sea and north of Scotland between 58&#xBA;30&#x2019;-62&#xBA;N and from the shelf edge to 2&#xBA;E, excluding Faroese waters.
To obtain biological samples by trawling with pelagic and demersal trawl for echosounder trace identification.
To obtain samples of herring and sprat for biological analysis, including age, length, weight, sex, maturity and ichthyophonus infection throughout the survey area.
Collect samples and data for stock identity determination for herring caught west of 4 &#xBA;W (photos and otoliths for morphometric stock ID analysis and tissue samples for genetic analysis).
To test feasibility of using GoPro cameras mounted in the net and on a dropframe to further aid in species identification in the echogram scrutiny process.
To obtain hydrographic data for comparison with the horizontal and vertical distribution of herring and sprat.</dc:description>
  <dc:date xmlns:dc="http://purl.org/dc/elements/1.1/">20191022</dc:date>
</oai_dc:dc>