Harmful Activities Of Algae

Harmful Activities

The following are some of the effects of algae causing damage.

[I] Water blooms

Algae grow abundantly in water reservoirs where and (especially nitrates of nutrients and excess sulphates) are available to them. Such an algal growth floats on the water surface and looks like foam or soap lather. It is called water bloom. members of Amongst bloom-forming algae, Anabaena, (e.g Microcystis, Cyanophyceae Oscillatoria, etc.) are common.

Water blooms deplete oxygen of water reservoirs and, therefore, aquatic animals die of deoxygenation. Bloom forming algae also release certain toxins which cause death of aquatic as well as domestic animals.

[II] Parasitism

Cephaleuros virescens, a green alga, is a parasite and causes red rust of tea in some tea growing parts of India, especially Assam. It is known to cause extensive damage to this crop.

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