Dataset

Benthic bycatch from dredge surveys for seed mussel (Mytilus edilus) stock assessment, Outer Ards, Northern Ireland

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This dataset contains presence/absence information of infaunal bycatch from seed mussel stock (Mytilus edulis) assessment surveys off the Outer Ards Peninsula in Northern Ireland. The seed mussel survey is carried out each year and these surveys were carried out between 2017-02-21 and 2018-07-18. The dredge samples are taken from the DAERA Fisheries Protection Vessel Queen of Ulster (formally BanrĂ­on Uladh). The main aim of the seed mussel survey is to carry out a stock assessment of seed mussel in areas that are fished for these mussels. The stock assessment surveys use acoustic ground discrimination system (AGDS), dredge surveys (ground truthing) and then in areas where there appears to be high levels of seed mussel an underwater video camera sledge is towed from the RV Corystes for more ground truthing. It is important to note that the information in this dataset was not the key focus of these surveys.

Citation: Agri-Food and Biosciences Institute (AFBI) (2019): Benthic bycatch from dredge surveys for seed mussel (Mytilus edilus) stock assessment, Outer Ards, Northern Ireland. v3.6. Marine Biological Association. Dataset/Samplingevent. https://doi.org/10.17031/2z09sx

Published: July 03, 2020 at 10:29

URL: https://www.dassh.ac.uk/ipt/resource?r=dasshse00000053

Agri-Food and Biosciences Institute (AFBI)
Agri-Food and Biosciences Institute (AFBI)

Data Archive for Marine Species and Habitats (DASSH)
Data Archive for Marine Species and Habitats (DASSH)

Data Team

704
occurrence records
1,890
measurements and facts
86
taxa
44
species

Taxa

Missing and invalid fields

Field Missing Invalid
maximumDepthInMeters 12
1.7%
minimumDepthInMeters 12
1.7%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 12
1.7%

Measurement types

DNA derived data