Noun
bacterioplankton (countable and uncountable, plural bacterioplanktons)
(biology) The bacterial component of marine plankton
Culture conditions Bdellovibrio species are found in river water "Experimental studies with river bacterioplankton assemblages did not reveal a significant impact on the bacterial community", reports K. Jürgens, "Predatory prokaryotes.. Source: Internet
At depths where no primary production occurs, zooplankton and bacterioplankton instead consume organic material sinking from more productive surface waters above. Source: Internet