the term plankton is applied to those organisms that are the drifters of the sea
TRANSCRIPT
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The term plankton is applied to those organisms that are the
“drifters” of the sea.
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Plankton
Most of these organisms are
small and if they can swim, their progress is so slow, that they move very little compared to the
currents.
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Plankton
Most marine organisms spend
at least part of their lives in the
plankton.
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Plankton
Everything from bacteria,
protozoans (including algae), and animals can be found in the
plankton.
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Plankton
Because of this abundance of
potential food in the water, many
of the marine organisms feed on plankton.
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Plankton
In fact, an abundance of plankton in a
particular area usually means an
abundance of other marine organisms.
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Plankton
Plankton is usually collected in a net like this one. The size of the net’s
mesh will determine the size, and therefore the type of plankton
collected.
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Plankton Types
Let’s take a look at some of the most common
types of plankton that are found in
the bay.
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Plankton Types
Diatoms are a type of “plant”
plankton that is common in the
bay.
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Copepods are the most abundant of the animal plankton types. They are Crustaceans that feed near the base of the food chain on diatoms.
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Barnacle NaupliiBarnacle nauplii are
often common in inshore samples.
Barnacles go from this stage to a settling cypris
stage and then to the sessile adult
stage.
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Zoea Crabs, like many
Crustaceans have a larval
stage known as a zoea. At
certain times of the year it can dominate the
samples!