Brown algae phylum phaeophyta
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Brown Algae: Phylum Phaeophyta. Brown algae belong to phylum (or “division”) Phaeophyta Color varies from olive green to dark brown, but are classified by having a preponderance of yellow-brown photosynthetic pigments, particularly fucoxanthin Nearly all 1,500 species are marine

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Brown Algae: Phylum Phaeophyta

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Brown algae phylum phaeophyta

Brown Algae: Phylum Phaeophyta

  • Brown algae belong to phylum (or “division”) Phaeophyta

  • Color varies from olive green to dark brown, but are classified by having a preponderance of yellow-brown photosynthetic pigments, particularly fucoxanthin

  • Nearly all 1,500 species are marine

  • Include the largest and most complex seaweeds


Brown algae phylum phaeophyta1

Brown Algae: Phylum Phaeophyta

  • Many species have gas-filled floats (pneumatocysts); e.g., rockweeds or wracks, Sargassum weed

http://www.physorg.com/news100350969.html


Brown algae phylum phaeophyta2

Brown Algae: Phylum Phaeophyta

  • The kelps are the most complex and largest of all brown algae

    • Consist of a single, or numerous large blade(s)

    • The stipes of giant kelp, Macrocystis can reach lengths of 100 m and grow ~1 ft per day!

    • Provides food and shelter for many other marine organisms

http://www.rmrs.nau.edu/usamab/general%20description%20channel%20islands.htm


Brown algae phylum phaeophyta

KELP!!!


Brown algae phylum phaeophyta

Kelp community with sea otters

http://www.otterproject.org/atf/cf/%7B1032ABCB-19F9-4CB6-8364-2F74F73B3013%7D/Otter_image4.jpg

Kelp community without sea otters

http://blackcormorant.blogs.com/photos/uncategorized/kelpurchins_415_030.jpg

http://sbc.lternet.edu/sites/biome_kelpforest.html


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