water exchange 10 Argentina 4 Coastal eutrophication 4 Decapoda (Crustacea) 4 Herbivory 4 Nutrients 4 San Antonio Bay 4 Tidal influence 4 Top-down vs. bottom-up controls 4 Ulva 4 Ulva lactuca 4 abundance 4 accumulation rate 4 algae 4 algal bloom 4 bioaccumulation 4 biofilm 4 biomass 4 chlorophyll a 4 environmental disturbance 4 eutrophication 4 green alga 4 herbivory 4 macroalga 4 marine ecosystem 4 oxygen 4 pH 4 trophic control 4 water quality 4 Rio Negro [Argentina] 3