plankton

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plank·ton

(plangk'tŏn),
A general term for many floating marine forms, mostly of microscopic or minute size, which are moved passively by winds, waves, tides, or currents; it includes diatoms, algae, copepods, and many protozoans, crustacea, mollusks, and worms.
[G. planktos, wandering]

plankton

[plangk′tən]
Etymology: Gk, planktos, wandering
nearly microscopic floating or weakly swimming organisms (both photosynthetic and nonphotosynthetic) found in lakes and oceans that provide the initial level in the food chain for aquatic animals.

plank·ton

(plangk'tŏn)
A general term for many floating marine forms, mostly of microscopic or minute size, which are moved passively by winds, waves, tides, or currents.
[G. planktos, wandering]

plankton

the organisms inhabiting the surface layer of a sea or lake, drifting with the current. Many planktonic organisms are capable of locomotion but are not sufficiently strong swimmers to move against the currents. Members of the plankton vary in size from unicellular organisms to large jellyfish, 1m or more in diameter. Compare NEKTON.

plankton

a collective name for small animal and plant (phytoplankton) organisms that drift passively in all natural bodies of water. The starting point of the aquatic food chain. Called also microalgae.
References in periodicals archive ?
Habitat: Planktic, epilithic and in the form of algal mat on the substrate surface, Balikhli River.
The termperature is considered to be an important factor in the periodicity of cyanobacteria especially for planktic species.
Planktic Cyanobacteria from Sao Paulo State, Brazil: Chroococcales.
2 m, a sidewall core sample shows a somewhat richer assemblage with a number of specimens of the planktic foraminifera Globorotalia opirna opima, allowing for firm dating of this level as mid Oligocene (P21/N2).
5 m) may actually contain some earlier Miocene sedimentation; age-diagnostic planktic foraminifera are rare, and caving is extensive in this section.
As in the analysis of the Wenonah J-75 material, the generalized environmental interpretations are based largely on ratios of benthic to planktic foraminifera, and are usually corroborated by the types of benthic foraminifera or other taxa present.
The environment of deposition at the Whycocomagh site was bathyal from at least the Ypresian until the Oligocene, when shallowing conditions reduced the diversity and numbers of planktic foraminifera.
The relatively rich planktic assemblages in this interval indicate that the Chattian and possibly some of the Lower Miocene is entirely missing.
Total percentages Depth micro- radio- planktic (m) fossils larians forams 841.
Planktic to benthic ratios vary considerably from 2.
Attributing the various deformities in planktic specimens to a single cause is not easily accomplished.
Cretaceous planktic foraminifera definitely underwent size increase and complex structural development (keels, bullae, tegilla, and so forth).