CE16019 Celtic Sea Herring Acoustic Survey

Published by: Marine Institute
6 Like
Views: 18
Openness rating:

This survey was conducted by the Marine Institute in Autumn 2016 as part of the annual Celtic Sea Herring Acoustic Survey. The aim of an acoustic survey is to determine the relative abundance of the target species. This information is then used to determine catch rates and management advice for the following year.

In the southwest of Ireland and the Celtic Sea herring are an important commercial species. Since 2004 the acoustic survey has been carried out in October on-board the RV Celtic Explorer. The geographical confines of the annual 21 day survey have been modified in recent years to include areas to the south of the main winter spawning grounds in an effort to identify the whereabouts of winter spawning fish before the annual inshore spawning migration.

For biological sampling, a single pelagic midwater trawl was used. All components of the catch from the trawl hauls were sorted and weighed; fish and other taxa were identified to species level. Length measurements of herring, sprat and pilchard were taken. Acoustic data were collected using the Simrad EK60 scientific echosounder. Visual marine mammal and seabird surveys were also conducted. Oceanographic data (conductivity, temperature and depth (CTD)) was collected at preset stations.

Data Resources (6)

available as HTML
available as HTML
Marine Institute home page
Acoustic Surveys home page
Marine Institute home page
European Maritime and Fisheries Fund home page
Theme Environment
Date dataset released 2017-11-21
Date dataset updated 2020-12-15
Dataset conforms to these standards See the referenced specification
Rights notes ['Consult license for use limitations', 'otherRestrictions', 'otherRestrictions']
Update frequency Other
Language English
Geographic coverage in GeoJSON format {"type":"Polygon","coordinates":[[[-10.733395, 50.543323],[-10.733395, 53.269691], [-5.65341, 53.269691], [-5.65341, 50.543323], [-10.733395, 50.543323]]]}
Spatial Reference Systems (SRS) WGS 84 (EPSG:3857)
Provenance information Data supplied by Marine Institute.
Period of time covered (begin) 2017-10-06
Period of time covered (end) 2017-10-27

Comments [0 ]

Be the first to comment