An Illustrated and Cross-Referenced Glossary of
Malacological and Conchological Terms
|by Paul S. Mikkelsen|
|DEVELOPMENT, PLANKTONIC||Having a free-swimming or floating larval stage; see also: DEVELOPMENT, DIRECT; LECITHOTROPHIC; PLANKTOTROPHIC, PLANKTON.|
|HOLOPLANKTON||PLANKTON which spends its entire life in the water column. See also: MEROOPLANKTON.|
|MEROPLANKTON||PLANKTON which spends only a portion of its life in the water column. See also: HOLOPLANKTON.|
Organisms that drift in the water column of salt, brackish, or fresh water. See also: ZOOPLANKTON, HOLOPLANKTON, MEROPLANKTON.
See also: the glossary link on the PlanktonNet website for a large, illustrated glossary of plankton-related terminology.
|PLANKTONIC||Floating or suspended in the water column, and generally incapable of overcoming the currents by swimming although some directional movement is possible, usually vertical; see also: BENTHIC; PLANTIGRADE.|
|ZOOPLANKTON||PLANKTON consisting of animals, vs. plants (phytoplankton) or bacteria (bacterioplankton). Various mollusks are part of the plankton, such as PTEROPODS and Janthina spp.|
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