Search results
Results from the WOW.Com Content Network
Coralline algae are red algae in the order Corallinales. They are characterized by a thallus that is hard because of calcareous deposits contained within the cell walls. The colors of these algae are most typically pink, or some other shade of red, but some species can be purple, yellow, blue, white, or gray-green.
Algae (UK: / ˈ æ l ɡ iː / AL-ghee, US: / ˈ æ l dʒ iː / AL-jee; [3] sg.: alga / ˈ æ l ɡ ə / AL-gə) is an informal term for any organisms of a large and diverse group of photosynthetic eukaryotes, which include species from multiple distinct clades.
The stable symbiotic relationship between corals and their algae symbionts (mainly dinoflagellates) is crucial for the survival of tropical and subtropical coral reef ecosystems. Through photosynthesis, these algae provide over 90% of the nutrients corals require, meeting their essential nutritional needs.
Coralline means 'resembling coral' and may refer to: Coralline algae, or corallines, red algae that produce calcareous deposits; Less commonly, organisms that resemble coral, such as certain bryozoans, hydrozoans, or coralline sponges; The calcareous material in coral reefs; Coralline rock, produced by coralline algae; Something having a red ...
Coral and microscopic algae have a symbiotic relationship. When water temperatures get too high, the algae leave the coral tissue and the coral begins to starve. [20] Climate change will affect coral reef ecosystems, through sea level rise, changes to the frequency and intensity of tropical storms, and altered ocean circulation patterns.
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. [1] Most coral reefs are built from stony corals, whose polyps cluster in groups. Coral belongs to the class Anthozoa in the animal phylum Cnidaria, which includes sea anemones and ...
The classification of corals has been discussed for millennia, owing to having similarities to both plants and animals. Aristotle's pupil Theophrastus described the red coral, korallion, in his book on stones, implying it was a mineral, but he described it as a deep-sea plant in his Enquiries on Plants, where he also mentions large stony plants that reveal bright flowers when under water in ...
The Corallinaceae are one of the two extant Coralline families of red algae; they are differentiated from the morphologically similar Sporolithaceae by their formation of grouped sporangial chambers, clustered into sori. [2] The Corallinoideae is monophyletic; the other subfamilies form another monophyletic group. [3]