European Directory of Marine Environmental Data (EDMED)

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General  
Data set name

Acoustic Survey Stations in the North Atlantic Ocean since 1999

Data holding centreMarine Institute
CountryIreland  Ireland
Time periodFrom 1999 onwards
OngoingYes
Geographical area

Celtic Sea, North Atlantic Ocean area to the north-west of Ireland and Inner Seas off the west coast of Scotland.

Observations 
Parameters

Date and time; Fish morphology, age and physiology; Fish abundance in water bodies; Fish and shellfish catch statistics; Fishing effort

Instruments

Pelagic trawl nets; acoustic tracking systems

Description 
Summary

Acoustic surveys have been generally carried out on spawning and pre-spawning aggregations of fish. Outside of the spawning season many pelagic species have been generally very scattered over a large geographical area and difficult to detect using acoustic methods. A cruise track was first formulated with data from previous surveys, commercial catch data and the help of the fishermen and fishing industry. This is the spatial dataset of the acoustic survey haul station locations undertaken during surveys. Acoustic surveys have taken place in the North Atlantic Ocean between Donegal and the west coast of Scotland; and in the Celtic Sea off the south coast of Ireland. Acoustic surveys have taken place on an annual frequency since 1999. Acoustic survey in fishing is one of the research methods that can detect the abundance of target species using acoustic detectors. For example, many pelagic fisheries are generally very scattered over a broad ocean and difficult to detect. Hence survey vessel with acoustic detector emits sound waves to estimate the density of plankton and fish shoal. Generally, the transducer is put under water, which is linked to an echo sounder in the vessel which records the shoals of fish as marks on a screen or paper trace. Then the density and number of marks are converted into biomass. Survey shot and haul stations have been based on acoustic survey data. The aim of an acoustic survey has been to determine the relative abundance of the target species. This information has been then used to determine catch rates and management advice for the following year. Acoustic surveys have been managed by the fisheries science section of the Marine Institute known as Fisheries Ecosystem Advisory Services who coordinated the annual surveys on board the research vessel Celtic Explorer. Data is considered a complete record of stations including only those stations between 1999 and 2009 as published on Irelands Marine Atlas.

OriginatorsMarine Institute
Data web sitehttps://data.gov.ie/dataset/acoustic-survey-stations
Availability 
OrganisationMarine Institute
AvailabilityLicence
ContactCiaran O'Donnell (Scientific and Technical Officer)
Address

Marine Institute
Rinville
Oranmore
Co. Galway
H91 R673
Ireland

Telephone+353-91-387200
Facsimile+353-91-387201
Emaildatarequests@marine.ie
Administration 
Collating centreMarine Institute
Local identifierf0c32fbe-4c5c-11df-9879-0800200c9a66
Global identifier1938
Last revised2017-12-04