Laminaria digitata, Laminaria hyperborea, Ascophyllum nodosum and Macrocystis
Nearshore subtidal reefs support extensive kelp forests along the coast of California and into Baja California, particularly at upwelling centers, where cooler temperatures support cold-temperate communities of giant kelp, Macrocystis
pyrifera, and other kelps (Edwards and Hernandez-Carmona 2005).
Opportunities and challenges for the development of an integrated seaweed-based aquaculture activity in Chile: determining the physiological capabilities of Macrocystis
and Gracilaria as biofilters.
Giant Kelp (Macrocystis
spp.) is the world's largest species of marine algae, and is the source for Ashland's SeaSteam biofunctional, a skin care active with unique properties.
Laboratory studies indicate that adults prefer Macrocystis
and Nereocystis but will feed on diatoms and brown, red, and green algae, including Laminaria, Pterygophora, and Costaria (Paul et al.
It is commercially harvested from the cell walls of brown algae (Phaeophyceae), like Laminaria hyperborea, Laminaria lessonia, Macrocystis
pyrifera, and Ascophyllum nodosum .
New Zealand Southern Pacific Seaweed Company founder, Daneen Morgan says the superfood capsules contain nothing but pure macrocystis
pyrifera kelp, hand-harvested from the waters off Kaka Point in The Catlins area of Southland.
pyrifera grew very sparsely on the shallower Cable B habitat, was more common on the shallower part of Cable A, and was essentially absent from the deeper cables (Fig.
Nevertheless, Manley  noted that more than half of the copper content was removed from the tissue of the seaweed (Macrocystis
pyrifera) when placed in a pure media and this can reduce the adverse effects of copper.
Macroalgal morphologies range from tiny simple filaments and crustose forms which creep along the seafloor and grow less than a millimeter a year to massive, towering species like the kelp Macrocystis
which can grow half a meter a day and attain frond lengths of over 30 meters (Lobban & Harrison, 1997).
Alginates (ALG) are a group of naturally occurring anionic polysaccharides derived from brown algae cell walls, including Macrocystis
pyrifera, Laminaria hyperborea, Ascophyllum nodosum [1, 2], and several bacteria strains (Azotobacter, Pseudomonas) .
The alginate is commercially obtained from farmed brown seaweeds such as Laminaria hyperborea, Laminaria digitata, Macrocystis
pyrifera and Ascophyllum nodosum (Auhim and Hassan, 2013).