FN Archimer Export Format
PT J
TI Changes in the annual harmful algal blooms of     Alexandrium minutum     : effects of environmental conditions and drainage basin inputs in the Rance estuary (Brittany, France)
BT 
AF LE BEC, Claude
   LEGENDRE, Aurelie
   MESSIAEN, Gregory
AS 1:1;2:2;3:3;
FF 1:PDG-ODE-LITTORAL-LERBO;2:PDG-ODE-LITTORAL-LERBN;3:PDG-ODE-LITTORAL-LERLR;
C1 IFREMER, Lab Environm Littoral & Ressources Aquacoles, Bretagne Occidentale, Pl Croix, F-29900 Concarneau, France.
   IFREMER, Lab Environm Littoral & Ressources Aquacoles, Bretagne Nord, F-35800 Dinard, France.
   IFREMER, Lab Environm Littoral & Ressources Aquacoles, Languedoc Roussillon, Ave Jean Monnet, F-34200 Sete, France.
C2 IFREMER, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
SI CONCARNEAU
   DINARD
   SETE
SE PDG-ODE-LITTORAL-LERBO
   PDG-ODE-LITTORAL-LERBN
   PDG-ODE-LITTORAL-LERLR
IN WOS Ifremer jusqu'en 2018
IF 0.448
TC 3
UR https://archimer.ifremer.fr/doc/00341/45257/44698.pdf
LA English
DT Article
DE ;Harmful algae;dinoflagellate;nutrients;eutrophication;drainage basin;land runoff
AB Time series of physico-chemical data and concentrations (cell L-1) of the toxic dinoflagellate Alexandrium minutum collected in the Rance macrotidal estuary (Brittany, France) were analyzed to understand the physico-chemical processes of the estuary and their relation to changes in bloom development from 1996 to 2009. The construction of the tidal power plant in the north and the presence of a lock in the south have greatly altered hydrodynamics, blocking the zone of maximum turbidity upstream, in the narrowest part of the estuary. Alexandrium minutum occurs in the middle part of the estuary. Most physical and chemical parameters of the Rance estuary are similar to those observed elsewhere in Brittany with water temperatures between 15–18 °C, slightly lowered salinities (31.8–33.1 PSU), low river flow rates upstream and significant solar radiation (8 h day-1). A notable exception is phosphate input from the drainage basin which seems to limit bloom development: in recent years, bloom decline can be significantly correlated with the decrease in phosphate input. On the other hand, the chemical processes occurring in the freshwater-saltwater interface do not seem to have an influence on these occurrences. The other hypotheses for bloom declines are discussed, including the prevalence of parasitism, but remain to be verified in further studies.
PY 2016
PD JAN
SO Aquatic Living Resources
SN 0990-7440
PU Edp Sciences S A
VL 29
IS 1
UT 000377049900004
DI 10.1051/alr/2016006
ID 45257
ER

EF