Type of fouling organism: Red Algae
Algae include several groups of relatively simple, eukaryotic, living aquatic organisms that capture light energy through photosynthesis to convert it to inorganic substances into organic matter. Algae vary from small, single-celled species to complex multicellular species, such as seaweeds. Seaweeds live in the sea or in brackish water occupying both the inter and sub-tidal. The algae can be distinguished by the different pigments into three basic colours: red, green and brown. Red algae are found in the intertidal to the subtidal at depths of up to 40m and in some cases up to 250m. There are over 6,500 described most of which are marine. Their red colour is attributed to the dominance of pigments phycoerythrin and phyocyanin. Components of their cell walls are in widespread commercial use and coralline algae which secrete calcium carbonate onto the surface of their cells have been used in bone replacement therapy.
Jania rubens is a red algae with calcareous jointed fronds, which branch dichotomously. It forms thick tufts, usually attaching to other algae.
Environment and Habitat
- Upper sublittoral and to a depth of 8 m.
- Reproductive type: Alternation of generations.
- Found on other biofouling organisms.
Effects and Impacts
- Problematic for stock species as can compete for space and resources.
Control/ Strategies and Management
Principles of Management
C Combat Settlement
- Range is from the Baltic Sea in the north to Portugal and the Azores in the south. Also found in the Mediterranean and Canary Islands.
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