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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.
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.
Various polymers can be created from algae, which can be especially useful in the creation of bioplastics. These include hybrid plastics, cellulose-based plastics, poly-lactic acid, and bio-polyethylene. [133] Several companies have begun to produce algae polymers commercially, including for use in flip-flops [134] and in surf boards. [135]
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.
These algae photosynthesize and produce nutrients, some of which are passed to the coral. The coral in turn will emit ammonium waste products which the algae uptake as nutrients. There has been an observed tenfold increase in calcium carbonate formation in corals containing algal symbionts compared with corals that do not have this symbiotic ...
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]
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 ...