Macrocystis is a genus of kelp. Sporophytes are perennial, and individual stipes may persist for many years. Common along the coast of the eastern Pacific Ocean, from central California to Baja California. Image File history File links Download high resolution version (1269x835, 171 KB) Macrocystis pyrifera Photo: Kip Evans. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Typical phyla Rhodophyta (red algae) Chromista Heterokontophyta (heterokonts) Haptophyta Cryptophyta (cryptomonads) Alveolates Pyrrhophyta (dinoflagellates) Apicomplexa Ciliophora (ciliates) Excavates Euglenozoa Percolozoa Metamonada Rhizaria Radiolaria Foraminifera Cercozoa Amoebozoa Choanozoa Many others; classification varies The Kingdom Protista or Protoctista is one of the commonly recognized biological kingdoms, including all the eukaryotes except for... Typical classes Colored groups Chrysophyceae (golden algae) Synurophyceae Actinochrysophyceae (axodines) Pelagophyceae Phaeothamniophyceae Bacillariophyceae (diatoms) Raphidophyceae Eustigmatophyceae Xanthophyceae (yellow-green algae) Phaeophyceae (brown algae) Colorless groups Oomycetes (water moulds) Hypochytridiomycetes Bicosoecea Labyrinthulomycetes (slime nets) Opalinea Proteromonadea The heterokonts or stramenopiles are a major line of eukaryotes. ... Orders Ascoseirales Chordariales Cutleriales Desmarestiales Dictyosiphonales Dictyotales Ectocarpales Fucales Laminariales(kelps) Scytosiphonales Scytothamnales Sphacelariales Sporochnales Syringodermatales Tilopteridales The brown algae or phaeophytes are a large group of multicellular algae, including many notable seaweeds. ... Kelp are large seaweeds, belonging to the brown algae and classified in the order Laminariales. ... Categories: Heterokonts | Microorganism stubs ... Families Alariaceae Chordaceae Laminariaceae Lessoniaceae Phyllariaceae Pseudochordaceae Kelp are large seaweeds, belonging to the brown algae and classified in the order Laminariales. ...
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Macrocystis was harvested maximally from 1916 to 1918 and from at least 1955 onward because of favorable economics.
Haines, K.C., and P.A. wheeler, 1978 Ammonium and nitrate uptake by the marine macrophytes Hypnea musciformis (Rhodophyta) and Macrocystis pyrifera (Phaeophyta).
Wheeler, A., 1979 Uptake of methylamine (an ammonium analogue) by a marine macrophyte Macrocystis pyrifera (Phaeophyta).
Kelp forests are a type of marine ecosystem established around colonies of kelp; they contain rich biodiversity.
Kelp can stretch 2-30 meters or more (up to 60 m in Macrocystis pyrifera) from their anchors on the sea floor to the surface, providing a vertical infrastructure that is home to many fish and invertebrate species.
Therefore, kelp forests rapidly reach a "mature" status, in striking contrast to terrestrial forests which may take hundreds of years to mature (see old growth forest).
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