Coral reefs

Coral reefs

Coral reefs are structures formed from the calcium carbonate secretions of corals. They are colonies of tiny animals in marine areas containing few nutrients.

Industry: Natural environment

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Coral reefs

Cladistic distance

Natural environment; Coral reefs

The number of branching points between any two nodes on a phylogenetic tree.

Coefficient of variation (c.v.)

Natural environment; Coral reefs

The standard deviation divided by the mean and multiplied by 100.

Sea cow

Natural environment; Coral reefs

A large, herbivorous aquatic mammal of the order Sirenia that contains two Recent families: Dugongidae for the genera Dugong (dugong, one species) and Hydrodamalis (Steller's sea cow, one species ...

Blotch

Natural environment; Coral reefs

A patch or a spot of pigment with irregular edges.

A transformation which occurs on a worldwide scale (for example, an increase in CO2 in the atmosphere) or exhibits sufficient cumulative effects to have worldwide impact (for example, local species ...

Ootheca

Natural environment; Coral reefs

An egg mass protected by a surrounding tough covering or a hard foam-like protein covering. Oothecae are made by many insect species and mollusks; an egg case.