ICES/NAFO Joint Working Group on Deep-water Ecology (WGDEC)

• Main Author: ICES
• Format: Article in Journal/Newspaper
• Language: English
• Published: ICES 2020
• Subjects: North Atlantic
• Online Access: https://archimer.ifremer.fr/doc/00710/82181/86985.pdf; https://doi.org/10.17895/ices.pub.7503; https://archimer.ifremer.fr/doc/00710/82181/

The joint ICES/NAFO Working Group on Deep-water Ecology (WGDEC) collates new information on the distribution of Vulnerable Marine Ecosystems (VMEs) for use in annual ICES advisory processes and the development of new methods/techniques to further our understanding of deep-sea ecosystems, and further suggests novel management tools to ensure human activities do not adversely affect them. This year, a total of 4609 new presence records and 181 absence records, were submitted through the ICES VME data call in 2020 and were included within the ICES VME database. This information was collated and mapped by WGDEC, to support ICES in providing advice on the distribution of VMEs in the North Atlantic. All presence records from the VME database were presented as outputs from the VME weighting system, showing the likelihood of VMEs being encountered on the seabed along with an associated confidence assessment. VMS data from NEAFC was analysed by the Working Group on Spatial Fisheries Data (WGSFD), and outputs were used by WGDEC to assess whether fishing activity was occurring in the vicinity of VMEs in the NEAFC Convention Area, to support ICES advice. Another objective this year was to further develop approaches for the inclusion of absence data and data from the OSPAR habitats database, into the ICES VME database. Absence data would add value to development of predictive habitat models for VMEs. However, some challenges with collection of absence data include the survey method used and associated spatial scales, where different approaches would mean data were not comparable. Furthermore, absence data should not be confused with ‘missing data’, which is particularly prudent for the deep sea where limited surveys have taken place. A series of criteria to be fulfilled for any submissions of VME absence data to the VME database were identified by the group. Methods to bring OSPAR records into the ICES VME database have been developed. However, the need to quality assure OSPAR data before it is transferred to the database is ...