Phaeophyceae

Also known as Phaeophyta, Fucophyceae, Melanophyceae, brown algae

class of algae

AI overview

Phaeophyceae is a class of algae commonly known as brown algae, characterized by the presence of a brown pigment that gives them their distinctive color. They are important organisms in marine ecosystems and include many familiar seaweeds that play a crucial role in coastal food webs and oxygen production.

AI-generated from the Wikipedia summary — may contain errors.

Species

brown algae

Phaeophyceae

CLASS

KingdomChromista
PhylumOchrophyta
ClassPhaeophyceae

Habitatmarine, brackish, freshwater

Observations recorded7,435,102

褐藻（學名：Phaeophyceae）是屬較高等的多細胞藻類，屬真核細胞生物，有1,500種左右，主要分布於大陸附近的水域，則淡水種罕見。褐藻纲外表從暗褐色的橄欖綠都有，其取決於褐藻素與葉綠素的比例。至於它們的大小各異，從只有數公分的水雲屬到1∼100公尺的巨藻屬。褐藻門則同時可以無性生殖和有性生殖繁殖。

via GBIF

Research

7,064 papers

Phlorotannins from Phaeophyceae: Structural Diversity, Multi-Target Bioactivity, Pharmacokinetic Barriers, and Nanodelivery System Innovation.ReviewMolecules (Basel, Switzerland) · 2025Harasym J, Słota P, Pejcz EDOI: 10.3390/molecules30244733
Polyphenols from Brown Seaweeds (Ochrophyta, Phaeophyceae): Phlorotannins in the Pursuit of Natural Alternatives to Tackle Neurodegeneration.ReviewMarine drugs · 2020Barbosa M, Valentão P, Andrade PBDOI: 10.3390/md18120654
Abiotic Factors Modulating Metabolite Composition in Brown Algae (Phaeophyceae): Ecological Impacts and Opportunities for Bioprospecting of Bioactive Compounds.ReviewMarine drugs · 2024Lopes C, Obando JMC, Santos TCD et al.DOI: 10.3390/md22120544
Phlorotannins from Ecklonia cava (Phaeophyceae): biological activities and potential health benefits.ReviewBioFactors (Oxford, England) · 2010Wijesekara I, Yoon NY, Kim SKDOI: 10.1002/biof.114
β-1,3-Glucans are components of brown seaweed (Phaeophyceae) cell walls.Protoplasma · 2017Raimundo SC, Pattathil S, Eberhard S et al.DOI: 10.1007/s00709-016-1007-6
Membrane fusion process and assembly of cell wall during cytokinesis in the brown alga, Silvetia babingtonii (Fucales, Phaeophyceae).ReviewPlanta · 2010Nagasato C, Inoue A, Mizuno M et al.DOI: 10.1007/s00425-010-1188-8
Brown algae.Current biology : CB · 2011Cock JM, Peters AF, Coelho SMDOI: 10.1016/j.cub.2011.05.006
Brown algal cell walls and development.ReviewSeminars in cell & developmental biology · 2023Beuder S, Braybrook SADOI: 10.1016/j.semcdb.2022.03.003

via PubMed

Wikidata facts

Image: Pacific rockweed, Olympic National Park, USA.jpg

Show 5 more facts

taxon name: Phaeophyceae
Commons category: Phaeophyceae
taxon common name: rjave alge
AlgaeBase URL: www.algaebase.org/browse/taxonomy/detail/?taxonid=4360
start time: 150000000-

Sources (3)

via Wikidata · CC0

~28 min read

Article

Brown algae (sg.: alga) are a large group of photoautotrophic, multicellular SAR comprising the class Phaeophyceae. They include many seaweeds located in colder waters of the Northern Hemisphere. Brown algae are the major seaweeds of the temperate and polar regions. Many brown algae, such as members of the order Fucales, commonly grow along rocky seashores. Most brown algae live in marine environments, where they play an important role both as food and as a potential habitat. For instance, Macrocystis, a kelp of the order Laminariales, may reach 60 m (200 ft) in length and forms prominent underwater kelp forests that contain a high level of biodiversity. Another example is Sargassum, which creates unique floating mats of seaweed in the tropical waters of the Sargasso Sea that serve as the habitats for many species. Some members of the class, such as kelps, are used by humans as food.

Between 1,500 and 2,000 species of brown algae are known worldwide. Some species, such as Ascophyllum nodosum, have become subjects of extensive research in their own right due to their commercial importance. They also have environmental significance through carbon fixation.