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Porphyra is a genus of coldwater seaweeds that grow in cold, shallow seawater. More specifically, it belongs to red algae phylum of laver species (from which comes laverbread), comprising approximately 70 species. [2] It grows in the intertidal zone, typically between the upper intertidal zone and the splash zone in cold waters of temperate oceans.
Red seaweed refers to thousands of species of macroscopic, multicellular, marine algae in the taxon Rhodophyta The marine ecology is unusually varied for an area of this size, as a result of the meeting of two major oceanic water masses near Cape Point , and the park extends into two coastal marine bioregions .
Asparagopsis taxiformis (red sea plume or limu kohu), formerly A. sanfordiana, [1] is a species of red algae, with cosmopolitan distribution in tropical to warm temperate waters. [2] Researchers have demonstrated that feeding ruminants a diet containing 0.2% A. taxiformis seaweed reduced their methane emissions by nearly 99 percent.
Porphyra umbilicalis, commonly called "laver", is a species of seaweed in the genus Porphyra. It is smooth in texture and forms delicate, sheetlike thalli, reaching 25 centimetres (10 in) long [1] and often clinging to rocks. [2] Porphyra is classified as red algae; it tends to be a brownish colour, but boils down to a dark green pulp when ...
Jania is an articulated coralline algae characterized by having erect thalli with dichotomously-arranged branches composed of alternating segments of red or pink, calcified, cylindrical sections (intergeniculum) and white uncalcified sections (geniculum); that is attached to the substrate by small, stolon-like holdfasts.
Many of the algae in this genus are used to make agar. [1] Agarocolloids are known to be extracted in algae belonging to the orders Gracilariales and Gelidiales with certain applications in the food and cosmetics. Gelling properties often differ among species, seasons, seaweed age, and substitutions between sulphate esters, among other compounds.
The Rhodophyta comprises one of the largest phyla of algae, containing over 7,000 recognized species within over 900 genera amidst ongoing taxonomic revisions. The majority of species (6,793) are Florideophyceae, and mostly consist of multicellular, marine algae, including many notable seaweeds. Red algae are abundant in marine habitats.
Grateloupia turuturu is a large species of seaweed that has several shades of coloring such as red, maroon, and burgundy. [3] However, it may also be yellow when dying or deceased. It is soft and gelatinous in texture. The blades of the organism vary in size and shape; typically 1 to 8 blades will stem from a center, attached by a cylindrical ...