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Diatomeje so svetovljanke, zato<br />

težko govorimo o ogroženosti vrst<br />

ali skupin.<br />

Toda previdno! Posamezne vrste<br />

žive le v določenih vodnih habitatih.<br />

Če jih prizadenemo, onesnažimo<br />

ali uničimo, izginejo tudi<br />

zanje značilne drobcene alge. In<br />

kisika je manj!<br />

Zato je vrstni sestav skupaj s pogostostjo<br />

vrst kremenastih alg uveljavljen<br />

kazalnik kakovosti in zdravja<br />

vodnega okolja.<br />

Diatoms are cosmopolites; therefore<br />

it is very difficult to talk about<br />

endangered species or groups.<br />

But with caution! Single species only<br />

live in specific aquatic habitats. If<br />

degraded, polluted or destroyed, also<br />

the tiny algae characteristic for these<br />

habitats will disappear. This would<br />

be a loss of oxygen!<br />

Therefore, the structure of algae<br />

community along with species frequency<br />

is an important indicator<br />

of quality and health of aquatic<br />

environment.<br />

1µm<br />

Thalassiosira weissflogii<br />

36

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