FN Archimer Export Format PT J TI Facing the necessity of describing estuarine ecosystems: a review of food web ecology study techniques BT AF PASQUAUD, Stéphanie LOBRY, Jeremy ELIE, Pierre AS 1:1;2:2;3:1; FF 1:;2:PDG-DOP-DCN-EMH;3:; C1 CEMAGREF, Groupement Bordeaux, Unite Ecosyst Estuariens & Poissons Migrateurs Am, F-33612 Cestas, France. IFREMER, Ctr Nantes, Dept EMH, Ecol & Modeles Halieut, F-44311 Nantes 3, France. C2 CEMAGREF, FRANCE IFREMER, FRANCE SI NANTES SE PDG-DOP-DCN-EMH IN WOS Ifremer jusqu'en 2018 copubli-france copubli-p187 IF 1.201 TC 41 UR https://archimer.ifremer.fr/doc/2007/publication-2784.pdf LA English DT Article DE ;Trophic model;Biochemical marker;Stable isotope;Stomach/gut content analysis;Estuarine food web AB Estuarine areas are sites of human pressures and degradation. In order to maintain and/or restore the quality of estuarine ecosystems, it is necessary to describe their structure and functioning. For that reason, many recent scientific works focus on food webs, which are depicted as being good indicators of the functioning of aquatic ecosystems. Hence it is necessary to question how estuarine food webs can be described. This paper proposes a pragmatic and practical review of the most widely used techniques (stomach/gut content analysis, stable isotope ratios and biochemical markers) with emphasis on their main advantages, drawbacks and bias according to possible ecological goals (ecological quality objectives). These approaches, although quite different, provide complementary information about the trophic relationships in the system, that is to say the sources of organic matter and the description of energy flows between the different compartments of the food web. In trophic models, all these results can be integrated to a global picture of the estuarine trophic structure. This is considered to be an essential step towards the understanding of the functioning of these ecosystems. PY 2007 PD SEP SO Hydrobiologia SN 0018-8158 PU Springer VL 588 IS 1 UT 000248623700014 BP 159 EP 172 DI 10.1007/s10750-007-0660-3 ID 2784 ER EF