FN Archimer Export Format PT J TI Complementarity of the multidimensional functional and the taxonomic approaches to study phytoplankton communities in three Mediterranean coastal lagoons of different trophic status BT AF LERUSTE, A. VILLEGER, S. MALET, Nathalie DE WIT, R. BEC, B. AS 1:1;2:1;3:2;4:1;5:1; FF 1:;2:;3:PDG-ODE-LITTORAL-LERPAC;4:;5:; C1 Univ Montpellier, UMR Marine Biodivers Exploitat & Conservat MARBEC, IRD, Ifremer,CNRS, Bat 24,Pl Eugene Bataillon, F-34095 Montpellier 5, France. IFREMER, LEPAC Corse, ZI Furiani, F-20600 Im Agostini, Bastia, France. C2 UNIV MONTPELLIER, FRANCE IFREMER, FRANCE SI CORSE SE PDG-ODE-LITTORAL-LERPAC UM MARBEC IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 2.325 TC 18 UR https://archimer.ifremer.fr/doc/00433/54454/55826.pdf https://archimer.ifremer.fr/doc/00433/54454/55830.pdf LA English DT Article DE ;Classification;Functional entity;Functional traits;Taxonomic diversity AB We used the individual-based multidimensional functional diversity and the taxonomic approaches in a complementary way to describe phytoplankton communities in three coastal lagoons with different eutrophication status in the South of France. We sampled communities during three seasons, i.e., in autumn, spring, and summer. Using classical taxonomy, 107 taxa/morphotypes were identified in the nine communities. The individual-based functional approach allowed grouping these individuals into 20 functional entities according to their values for 5 traits related to trophic adaptations (cell size, mobility, trophic regime, coloniality, and pelagic/benthic life). Some species (e.g., Prorocentrum micans) emerged in multiple functional entities, showing the importance to consider intraspecific variability. The functional description of phytoplankton communities better reflected the hydrological functioning and the different eutrophication status of the lagoons than the taxonomic approach. Specific functional adaptations were identified in the nine communities. For example, phytoplankton organisms with heterotrophic and potentially mixotrophic abilities occurred when the availability of inorganic nutrient decreased, or when organic matter and small preys were potentially the main nutrient resources. The limitation has also favored small cells highly competitive for nutrients. Using functional indices together with taxonomic description has also helped revealing important aspects of community assembly, such as competitive exclusion in summer. PY 2018 PD JUL SO Hydrobiologia SN 0018-8158 PU Springer VL 815 IS 1 UT 000428815800015 BP 207 EP 227 DI 10.1007/s10750-018-3565-4 ID 54454 ER EF