@article{fdi:010049511, title = {{E}stimating {EAF} indicators from scientific trawl surveys: theoretical and practical concerns}, author = {{J}ouffre, {D}idier and {B}orges, {M}. de {F}. and {B}undy, {A}. and {C}oll, {M}. and {D}iallo, {I}. and {F}ulton, {E}. {A}. and {G}uitton, {J}. and {L}abrosse, {P}. and {O}uld {M}ohamed {A}bdellahi, {K}. and {M}asumbuko, {B}. and {T}hiao, {D}.}, editor = {}, language = {{ENG}}, abstract = {{U}nder the context of an ecosystem approach to fisheries ({EAF}), there is keen interest in providing insights into the evolution of exploited ecosystems using simple ecosystem indicators. {M}any nations have long-term scientific research surveys, originally driven by conventional approaches in fisheries assessment and management. {T}he aim of this study is to address the practical concerns linked to current objectives of monitoring simple {EAF} indicators, using data from surveys that were not historically designed for the purpose. {B}ased on the results of an expert survey designed to collect expert knowledge on research surveys from scientists working on different ecosystems worldwide, a list of challenges faced during indicator estimation is highlighted, along with associated concerns and constraints. {T}he work provides additional information useful in the interpretation of the results obtained on the state and trends of ecosystems using {EAF} indicators by the {I}ndi{S}eas {WG}. {F}urther, the related discussion provides potential pathways that could be useful for future research and development aiming to improve the ecosystem indicator approach in the operational context of {EAF}. {T}he question of the utility for {EAF} of using historical dataseries of scientific trawl series is also discussed. {S}uch long-term series are concluded to be useful, that they are even inescapable (since the past cannot be resamplied), and that {EAF} therefore brings a supplementary reason for continuing such monitoring and to incorporate new insights in how research surveys may be conducted.}, keywords = {{EAF} ; ecological indicators ; ecosystem effect of fishing ; historical data ; trawling surveys}, booktitle = {}, journal = {{I}ces {J}ournal of {M}arine {S}cience}, volume = {67}, numero = {4}, pages = {796--806}, ISSN = {1054-3139}, year = {2010}, DOI = {10.1093/icesjms/fsp285}, URL = {https://www.documentation.ird.fr/hor/fdi:010049511}, }