@article{fdi:010063846, title = {{F}ishing impact in {M}editerranean ecosystems : an {E}co{T}roph modeling approach}, author = {{H}alouani, {H}. and {G}ascuel, {D}. and {H}attab, {T}. and {B}en {R}ais {L}asram, {F}. and {C}oll, {M}arta and {T}sagarakis, {K}. and {P}iroddi, {C}. and {R}omdhane, {M}.{S}. and {L}e {L}oc'h, {F}ran{\c{c}}ois}, editor = {}, language = {{ENG}}, abstract = {{T}he {E}co{T}roph modeling approach was applied to five {M}editerranean marine ecosystems to characterize their food webs and investigate their responses to several simulated fishing scenarios. {F}irst, {E}co{T}roph was used to synthesize the outputs of five pre-existing heterogeneous {E}copath models in a common framework, and thus to compare different ecosystems through their trophic spectra of biomass, catch, and fishing mortalities. {T}his approach contributes to our understanding of ecosystem functioning, from both ecological and fisheries perspectives. {T}hen, we assessed the sensitivity of each ecosystem to fishery, using {E}co{T}roph simulations. {F}or the five ecosystems considered, we simulated the effects of increasing or decreasing fishing mortalities on both the biomass and the catch per trophic class. {O}ur results emphasize that the {M}editerranean {S}ea is strongly affected by the depletion of high trophic level organisms. {R}esults also show that fisheries impacts, at the trophic level scale, differ between ecosystems according to their trophic structure and exploitation patterns. {A} top-down compensation effect is observed in some simulations where a fishing-induced decrease in the biomass of predators impacts their prey, leading to an increase in the biomass at lower trophic levels. {T}he results of this comparative analysis highlight that ecosystems where top-down controls are observed are less sensitive to variations in fishing mortality in terms of total ecosystem biomass. {T}his suggests that the magnitude of topdown control present in a system can affect its stability.}, keywords = {{MILIEU} {MARIN} ; {FONCTIONNEMENT} {DE} {L}'{ECOSYSTEME} ; {STRUCTURE} {TROPHIQUE} ; {NIVEAU} {TROPHIQUE} ; {PECHE} ; {CAPTURE} ; {BIOMASSE} ; {MODELISATION} ; {MEDITERRANEE}}, booktitle = {}, journal = {{J}ournal of {M}arine {S}ystems}, volume = {150}, numero = {}, pages = {22--33}, ISSN = {0924-7963}, year = {2015}, DOI = {10.1016/j.jmarsys.2015.05.007}, URL = {https://www.documentation.ird.fr/hor/fdi:010063846}, }