You may be trying to access this site from a secured browser on the server. Please enable scripts and reload this page.
It looks like your browser does not have JavaScript enabled. Please turn on JavaScript and try again.
News
Events
Calendar
Library
SharePoint login
Admin
Toggle navigation
About ICES
Who we are
How we work
Global cooperation
Project collaborations
ICES Awards
Jobs at ICES
Science
Expert groups
Science priorities
Publications
Data
Dataset Collections
Data Portals
Data Tools
Assessment Tools
Maps
Vocabularies
Guidelines and Policy
Advice
Currently selected
Latest advice
adviceXplorer
Aquaculture overviews
Ecosystem overviews
Fisheries overviews
ICES ecoregions and advisory areas
Join us
Why join us
Join our expert groups
Become an observer
Join our advisory process
Latest advice
adviceXplorer
Aquaculture overviews
Ecosystem overviews
Currently selected
Fisheries overviews
ICES ecoregions and advisory areas
Ecosystem overviews
Ecosystem overviews
Toggle navigation
What are Ecosystem Overviews?
Interactive diagrams
Celtic Seas Ecosystem Overview
Key signals
Page Content
Fishing accounts for several of the main pressures in the Celtic Seas ecoregion, e.g. species extraction and physical seabed disturbance, which affects mostly fish, cephalopods, and benthic habitats and associated biota.
Extraction of commercial demersal, benthic, and shellfish stocks in the ecoregion has decreased since its peak in the late 1990s and is on average approaching sustainable levels for the assessed stocks in each of these groups.
Temperature related distributional changes have been observed for a number of fish species within the region.
Physical seabed disturbance by mobile bottom‑contacting fishing gear decreased by 35% from 2003 to 2014.
Small-scale coastal fisheries contribute less than 10% of total fish landings but have regional importance in terms of employment (22% FTE) and revenue (14%).
Surface water temperature in shallow shelf regions are warming and becoming seasonally increasingly stratified and nutrient limited in some areas. Freshening of western subpolar north Atlantic waters is observed in deeper areas of the ecoregion such as the Rockall Trough and the Faroe-Shetland Channel.
A decline of 50% in summer copepod abundance has been observed over the last 60 years due to earlier spring blooms and/or the increased contribution of picophytoplankton to the overall phytoplankton abundance.
Long-term coastal dinoflagellate abundance showed a weak decrease from 1993–2019 at the west coast observatory and an increase compared to diatoms in other inshore areas in 2006–2015. This may have implications for the frequency and intensity of harmful algal bloom events (HABs), which have caused widespread closures of shellfish farming areas and occasional mortalities of benthic organisms as well as farmed and wild fish.
The abundance of breeding seabirds has shown a downward trend since the early 2000s.
Print it
Send to
Share it
Page Image
Image Caption
Back to Celtic Seas Ecosystem Overview diagram
c
Follow
SharePoint
Celtic Seas Ecosystem Overview
International Council for the Exploration of the Sea (ICES)
·
Conseil International pour l'Exploration de la Mer (CIEM)
ICES Secretariat
·
H. C. Andersens Boulevard 44-46, DK 1553 Copenhagen V, Denmark
·
Tel: +45 3338 6700
·
Fax: +45 3393 4215
·
info@ices.dk
Disclaimer
Privacy policy
·
© ICES - All Rights Reserved