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ICES BEWG REPORT 2014 | 1 Executive summary The Benthos Ecology Working Group (BEWG) was hosted by Ifremer and held its 2014 meeting at the Station marine de Dinard - CRESCO, both in Dinard, France. The meeting was attended by 26 participants, representing 10 countries. The meeting was structured along the four BEWG core business issues: Benthic longterm series and climate change, benthic indicators, species distribution modelling and disentanglement of the link between biodiversity and ecosystem functioning. Six initiatives were further developed during the workshop: • Further planning of the ongoing work already initiated under the SGCBNS. • Getting the Benthic Long-term Series Network (BeLTS-net) launched. • Initiation of the investigation of benthic indicators’ comparability and complementarity. • Final revision of the BEWG review paper: “Species distribution modelling and mapping in the marine environment and its relevance for ecosystem management”. • Further development of the link between ecosystem functioning and benthic diversity. • Further development of the position paper on “Linking benthic ecology to ecosystem services”. Four new initiatives (case studies) were developed and launched during the workshop: • Case study: “Towards the quantitative benthic species distribution modeling for ecosystem functioning: linking bioturbation potential with nitrate cycling”. • Case study: “On the variability in expert assessment of benthic species tolerances / sensitivities, as used in several multimetric indices”. • Case study: “Towards efficient and effective monitoring programmes for benthic multrimetric indices”. • Case study: “On biological trait analysis in benthic ecology”.