Brazil-Malvinas Confluence Atlantic Ocean 12 Atlantic Ocean (Southwest) 10 Southwestern Atlantic 6 abundance 6 community structure 6 zooplankton 6 Biogeography 4 biomass 4 chlorophyll 4 copepods 4 crustacean 4 normalized biomass size spectra 4 population density 4 population distribution 4 size structure 4 summer 4 trophic level 4 upper ocean 4 Acanthostomella norvegica 2 Argentina 2 Argentine Basin 2 Argo 2 Argo floats 2 Assemblages 2 Atlantic 2 Bacillariophyta 2 Beta diversity 2 Brazil 2 Brazil–Malvinas Confluence 2