FN Archimer Export Format PT J TI Faune ichtyologique comparée de deux récifs artificiels du littoral de la Ria Formosa (lagune Portugal) : résultats préliminaires OT Comparison of the fish assemblages of two artificial reefs off Ria Formosa lagoon (Portugal): Preliminary results BT AF SANTOS, M MONTEIRO, C LASSERRE, G AS 1:;2:;3:; FF 1:;2:;3:; C1 UNIV MONTPELLIER 2,LAB HYDROBIOL MARINE,URA CNRS,F-34095 MONTPELLIER 05,FRANCE C2 UNIV MONTPELLIER 2,LAB HYDROBIOL MARINE,URA CNRS,F-34095 MONTPELLIER 05,FRANCE IF 0.662 TC 12 UR https://archimer.ifremer.fr/doc/00096/20764/18390.pdf LA French DT Article AB The fish assemblages of two artificial reef systems of the south coast of Algarve (Portugal) are presented, and a comparative study is made of their species richness variation according to their location off the Ria Formosa lagoon. Each system consists of a protection reef and an exploitation reef. Gillnets, traps, longline and visual census were used as sampling techniques. Both reefs showed similar species richness, in each case higher than that of Ria Formosa. No significant differences of species richness were found between the reef systems (p = 0.1). However, the exploitation reefs showed a significant difference of species richness, that was more evident when accumulated species richness was used to compare them (p = 0.01). PY 1996 SO Oceanologica Acta SN 0399-1784 PU Gauthier-Villars VL 19 IS 1 UT A1996UH95100008 BP 89 EP 97 ID 20764 ER EF