We now know that pollution severely affects microbial communities indicating how fragile
aquatic biota can be, so it is necessary to explore how exactly those impacts affect
microorganisms directly (e.g. characterizing which of pollutants cause death of organisms
and which ones promote slowing of growth). Rarefaction curves generated from
metagenomic analysis indicate that a large amount of the diversity of Bacteria and Archaea
is not being covered, calling for further efforts to fully identify these organisms, especially
when focusing on rare groups.