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Introduction to Plankton 1

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Tam metin

(1)

Prof. Dr. Ayşe Nilsun DEMİR

Department of Fisheries and Aquaculture Engineering

(2)

Plankton

 Free organisms in water.

 It moved by the flows of water  They are divided into two groups:  zooplankton and phytoplankton.

(3)

Plankton live freely in the water, even if they have some special structures for movement, their movement is very limited.

Plankton move by the effect of the water flows and they are the

organisms which have passive movement.

Their movement is mostly vertical and they can move horizontal but limitedly.

(4)

The organisms which belong to this definition are belong to

chaetognats, fish larvae, pelagic crustaceans and some zooplankton Coastal waters are rich in meroplankton

(5)

The History of Plankton

Plankton defined as

todays meaning

according to studies at

the end of 19th

century by Victor

Hensen (1886) and

Haeckel (1890).

(6)

Term of plankton derived from

planktos which means circulating

and drifting.

Plankton are classified in

different ways according to

different purposes by the

scientists.

(7)

New Studies

 Counting and defining the biodiversity of

phytoplankton

 Thousands of species can be counted in a

minute by using an optic technic which name is ‘‘Flow cytometry’’

 Scientists have discovered a new species

which are small but many and they are called prochlorophytes

 Investigation on evolution and relations

between different plankton species by using DNA studies

Referanslar

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Ayşe Nilsun DEMİR Department of Fisheries and Aquaculture Engineering..