FN Archimer Export Format
PT J
TI Inhibition of microphytobenthic photosynthesis by the herbicides atrazine and diuron
BT 
AF LEGRAND, Helene
   HERLORY, Olivier
   GUARINI, Jean-Marc
   BLANCHARD, Gerard
   RICHARD, Pierre
AS 1:1;2:2;3:1;4:2;5:1;
FF 1:;2:;3:;4:;5:;
C1 IFREMER, Ctr Rech Ecosyst Marins & Aquacoles Houmeau, CNRS, UMR 10, F-17137 LHoumeu, France.
   Univ La Rochelle, CNRS, FRE 2727, LBEM, F-17042 La Rochelle, France.
C2 IFREMER, FRANCE
   UNIV LA ROCHELLE, FRANCE
SI LA ROCHELLE
SE PDG-DOP-DCN-AGSAE-CREMA
   PDG-DOP-DCN-AGSAE-CRELA
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 0.492
TC 15
UR https://archimer.ifremer.fr/doc/2006/publication-3614.pdf
LA English
DT Article
DE ;Diuron;Atrazine;PAM;Chlorophyll fluorescence;Microphytobenthos
AB Atrazine and diuron are two herbicides present in sediments of the intertidal mudflats in the Pertuis Charentais (Atlantic coast, France). They may negatively affect photosynthesis processes in microphytobenthos, the most productive primary producer in these environments. The impact of these herbicides on benthic diatoms was investigated using PAM fluorimetry on natural microalgal communities, once extracted from sediment, by following the variations of the effective quantum yield of PSII (Phi(PSII)) during exposure to atrazine and diuron concentrations in a range 0.1 mu g L-1 (.) 10 mg L-1. No significant effect was noticed for 0.1 mu g L-1 concentrations, but progressive reduction in photosynthetic efficiency, always occurring within 15 min, was associated with increasing herbicide concentration. Diuron appeared to be more toxic than atrazine as shown by the complete inhibition of the photosynthetic processes at concentrations of 100 mu g L-1 of diuron, and 10 mg L-1 of atrazine. A synergistic effect between these two herbicides was noticed only for the lowest concentrations tested.
PY 2006
SO Cahiers de Biologie Marine
SN 0007-9723
PU Station Biologique de Roscoff
VL 47
IS 1
UT 000237512600006
BP 39
EP 45
ID 3614
ER

EF