@article{fdi:010054290, title = {{G}lobal assessment of the fishing impacts on the {S}outhern {B}enguela ecosystem using an {E}co{T}roph modelling approach}, author = {{G}asche, {L}. and {G}ascuel, {D}. and {S}hannon, {L}. and {S}hin, {Y}unne-{J}ai}, editor = {}, language = {{ENG}}, abstract = {{W}e show that the {E}co{T}roph model based on trophic spectra is an efficient tool to build ecosystem diagnoses of the impact of fishing. {U}sing the {S}outhern {B}enguela case study as a pretext, we present the first thorough application of the model to a real ecosystem. {W}e thus review the structure and functioning of {E}co{T}roph and we introduce the user to the steps that should be followed, showing the various possibilities of the model while underlining the most critical points of the modelling process. {W}e show that {E}co{T}roph provides an overview of the current exploitation level and target factors at the ecosystem scale, using two distinct trophic spectra to quantify the fishing targets and the fishing impact per trophic level. {T}hen, we simulate changes in the fishing mortality, facilitating differential responses of two groups of species within the {S}outhern {B}enguela ecosystem to be distinguished. {M}ore generally, we highlight various trends in a number of indicators of the ecosystem's state when increasing fishing mortality and we show that this ecosystem is moderately exploited, although predatory species are at their {MSY}. {F}inally, trophic spectra of the fishing effort multipliers {EMSY} and {E}(0.1) are proposed as tools for monitoring the ecosystem effects of fishing.}, keywords = {{E}cosystem indicators ; {T}rophic modelling ; {E}co{T}roph ; {F}ishing impact ; {O}verfishing ; {S}outhern {B}enguela ; {AFRIQUE} {DU} {SUD} ; {BENGUELA}}, booktitle = {}, journal = {{J}ournal of {M}arine {S}ystems}, volume = {90}, numero = {1}, pages = {1--12}, ISSN = {0924-7963}, year = {2012}, DOI = {10.1016/j.jmarsys.2011.07.012}, URL = {https://www.documentation.ird.fr/hor/fdi:010054290}, }