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LISTĘ DES TABLEAUX

Tableau    Page

Tableau 1.1 Proprietćs physico-chimiques du glyphosate (Santć Canada, 1987;

Giesy et cii 2000; CCME, 2008)................................................................................4

Tableau 1.3 Les effets du glyphosate sur la photosynthese chez les vegetaux....................13

Tableau 2.1 Species used for bioassays, testing growth and photosynthetic

capacity of algae and cyanobacteria exposed to glyphosate-based herbicide...........21

Tableau 2.2 Photosynthetic parameters as describcd by Force et al. (2003), energy fluxes model, based on Strasser et al. (1995), measured using the Plant Efficiency Analyser....................................................... 23

Tableau 2.3 Mean growth rates (p) and standard deviations for each algae and

cyanobacteria spccies at different glyphosate concentrations...................................25

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Tableau 2.4 EC_l0 values (pg I*¹ of glyphosate) for each parameter (growth and photosynthesis) and each species exposed to inereasing glyphosate concentrations for a 48 hours period.........................................................................28

Tableau 3.1 Growth indicators (dry weight [pg ml'¹], abundance [cells ml¹] and specific biovolume [mm³ ml¹]) in an agricultural stream phytoplankton community after a 96 hours exposure to various concentrations of glyphosate-based herbicide.................;.......................................................................................50

Tableau 3.2 Chlorophyll a, b and carotenoids content (% of pigment compared to control) and chlorophyll alb ratio in an agricultural stream phytoplankton community after a 96 hours e.\posure to yarious concentrations of glyphosate-based herbicide.........................................................................................................51

Tableau A. 1 Comparaison entre la toxicite du glyphosate seul et celle du glyphosate

combine avec differents surfactants dans les melanges commerciaux.....................69

Tableau A.2 Equations for log-Iog regressions in Chapter 1................................................70