Merigot B. auteur aut IRD Gaertner Jean-Claude auteur aut IRD Amour A. B. auteur aut IRD Carbonara P. auteur aut IRD Esteban A. auteur aut IRD Garcia-Ruiz C. auteur aut IRD Gristina M. auteur aut IRD Imzilen Taha auteur aut IRD Jadaud A. auteur aut IRD Joksimovic A. auteur aut IRD Kavadas S. auteur aut IRD Kolitari J. auteur aut IRD Maina I. auteur aut IRD Maiorano P. auteur aut IRD Manfredi C. auteur aut IRD Micallef R. auteur aut IRD Peristeraki P. auteur aut IRD Relini G. auteur aut IRD Sbrana M. auteur aut IRD Spedicato M. T. auteur aut IRD Thasitis I. auteur aut IRD Vittori S. auteur aut IRD Vrgoc N. auteur aut IRD text journalArticle eng text/pdf reformatted digital access Trawling pressure and environmental changes may affect the composition of fish assemblages. Our knowledge on large spatio-temporal patterns of demersal fish composition remains incomplete for the Mediterranean Sea. We investigated (1) the spatio-temporal stability of demersal assemblages, (2) the relationships between these assemblages and potential structuring factors (trawling pressure and environmental conditions) in order to assess the dynamic of the assemblage structure at the scale of the northern Mediterranean Sea. We analysed a dataset of 18062 hauls from 10 to 800 m depth performed annually during the last two decades across 17 Geographical Sub-Areas (GSAs) (MEDITS program). A multi-table analysis (STATICO-CoA) evidenced a strong inter-GSAs stability in the organization of assemblages, with specificities for some GSAs. The most stable structuring factors were linked to combined gradients of chlorophyll a, phytoplancton carbon biomass and temperature, inversely correlated with depth, salinity and nutrient gradients (axis 1 of the STATICO-CoA compromise, 93.74% of the total variability). A common pattern linking the distribution of species to these environmental gradients was evidenced for most of the 17 GSAs. Estimate of trawling pressure showed a minor role in the organization of the assemblages for the spatial scale and years investigated (axis 2. 4.67%). specialized species composition stability demersal assemblages environment fishing pressure large scale co-inertia analysis STATICO-CoA MEDITERRANEE 040 036 Spedicato M.T. ed. edt IRD Tserpes G. ed. edt IRD Mérigot B. ed. edt IRD Massuti E. ed. edt IRD 83 1 153-163 2019 0214-8358 https://www.documentation.ird.fr/hor/fdi:010077738 10.3989/scimar.04954.30A 0214-8358 [F B010077738] https://www.documentation.ird.fr/hor/fdi:010077738 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers20-01/010077738.pdf IRD - Base Horizon / Pleins textes 2020-02-05 2025-02-24 fdi:010077738 fre