@article{fdi:010067204, title = {{W}ater flux management and phytoplankton communities in a {M}editerranean coastal lagoon. {P}art 2. {M}ixotrophy of dinoflagellates as an adaptive strategy ?}, author = {{C}ecchi, {P}hilippe and {G}arrido, {M}. and {C}ollos, {Y}. and {P}asqualini, {V}.}, editor = {}, language = {{ENG}}, abstract = {{D}inoflagellate proliferation is common in coastal waters, and trophic strategies are often advanced to explain the success of these organisms. {T}he {B}iguglia lagoon is a {M}editerranean brackish ecosystem where eutrophication has long been an issue, and where dominance of dinoflagellates has persisted for several years. {M}onthly monitoring of fluorescence-based properties of phytoplankton communities carried out in 2010 suggested that photosynthesis alone could not support the observed situation all year round. {C}ontrasting food webs developed depending on the hydrological season, with a gradual shift from autotrophy to heterotrophy. {P}rogressively, microphytoplankton assemblages became unequivocally dominated by a {P}rorocentrum minimum bloom, which exhibited very weak effective photosynthetic performance, whereas paradoxically its theoretical capacities remained fully operational. {D}ifferent environmental hypotheses explaining this discrepancy were examined, but rejected. {W}e conclude that {P}. minimum bloom persistence is sustained by mixotrophic strategies, with complex compromises between phototrophy and phagotrophy, as evidenced by fluorescence-based observations.}, keywords = {{LAGON} ; {EUTROPHISATION} ; {PHYTOPLANCTON} ; {BIOMASSE} {ALGALE} ; {PROTECTION} {DE} {L}'{ECOSYSTEME} ; {ADAPTATION} ; {ZONE} {COTIERE} ; {MEDITERRANEE} ; {FRANCE} ; {CORSE} ; {BIGUGLIA} {LAGON}}, booktitle = {}, journal = {{M}arine {P}ollution {B}ulletin}, volume = {108}, numero = {1-2}, pages = {120--133}, ISSN = {0025-326{X}}, year = {2016}, DOI = {10.1016/j.marpolbul.2016.04.041}, URL = {https://www.documentation.ird.fr/hor/fdi:010067204}, }