Discharge and is particularly evident in slow moving

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discharge) and is particularly evident in slow-moving rivers and shallow lakes….Increased sediment deposition can eventually raise the level of the lake or river bed, allowing land plants to colonize the edges, and eventually converting the area to dry land.” - Lawrence and Jackson, 1998 19
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Phytoplankton bloom off Vancouver Island 20
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Golden Algae (Chrysophyta) Golden Algae - named for their color, which results from their yellow and brown carotenoids; cells are typically biflagellate, with both flagella near one end All golden algae are photosynthetic, and some are also heterotrophic; most are unicellular, but some are colonial; coenocytic, freshwater or terrestrial. Dinobryon Vaucheria
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“Seaweeds” Body plan is thallus (holdfast, stipe, blade, air bladders) Chlorophylls masked by pigments that give them their common names. Includes members of: Phaeophyta Rhodophyta Chlorophyta 22
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Phylum Phaeophyta - “brown algae” Carotenes and xanthophylls Can grow to 100 feet Found in cold marine waters Important habitat for marine organisms Sea urchins, Sea Otters, Birds Used for iodine, fertilizer, algin in beer, ice cream, paints, facial powders Fucus, Laminaria 23
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Macrocystis 24 Laminaria Fucus Sea Palm
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25 Kelp Harvester Kelp Forest
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26
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Laminaria Life Cycle 27
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Kingdom Rhodophyta - “red algae” Carotenoids phycobilins Some rocklike - coralline algae, or look like sea fans Mostly marine, some fresh water Source of agar Nature (1949) Katherine Baker described diploid phase of Porphyra (nori) - now a billion $/yr industry in Japan 28
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From Daniel Mosquino, University of British Columbia : As a sea crop, nori ( Porphyra ) is valued at an estimated 1 billion USD globally, with a worldwide production of around 600 000 tonnes. By comparison, sugar cane production is around 1.75 billion tonnes (~3000x the production by mass). As nori contains high amounts of protein, vitamins and minerals (e.g., for vitamin C, ~95mg/100g of nori vs. ~53mg/100g of oranges), perhaps that production ratio will slowly shift in favour of nori. Despite what may seem like small amounts of production globally, nori is the most widely-consumed algae in the world. The Seaweed Site contains extensive information about nori cultivation, as does the Food and Agriculture Organization of the United Nations: Porphyra spp..
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  • Spring '14
  • Brown algae, Red algae, Golden algae, Coralline algae

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