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  <dc:title xmlns:dc="http://purl.org/dc/elements/1.1/">HERAS - 0814S - Herring acoustic survey 2014 - North Sea and west of Scotland - Scotia</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_1705</dc:identifier>
  <dc:description xmlns:dc="http://purl.org/dc/elements/1.1/">Daily folders (17) of Simrad format(.raw) acoustic data. 17 Echoview format (EV) analysis files. FSS format biological data for 42 pelagic hauls. 35 Vertical CTD dips. 32 vertical dips for macro zooplankton sampling. Continual thermosalinograph data. Continual AGDS data.
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 for echosounder trace identification using a pelagic trawl.

To obtain samples of herring for biological analysis, including age, length, weight, sex, maturity and ichthyophonus infection.

To obtain hydrographic data for comparison with the horizontal and vertical distribution of herring.

To obtain dry weight estimates of macro zooplankton biomass throughout the study area for comparison with acoustically derived plankton biomass estimates and observed herring distribution.</dc:description>
  <dc:date xmlns:dc="http://purl.org/dc/elements/1.1/">20160323</dc:date>
</oai_dc:dc>