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植物学及园艺学英文版 botany and horticulture (48).ppt

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植物学及园艺学英文版 botany and horticulture (48).ppt
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Red Algae Stephanie Hutton,,http://blog.soleilorganique.com/sun-protection/seaweed%E2%80%99s-place-in-the-sun/,Red Algae is red because of presence of phycoerythrin (pigment). It reflects red light and absorbs blue light. Can also appear purplish in color.,http://www.ucmp.berkeley.edu/protista/rhodophyta.html,,Kingdom: Plantae/Protista Division: Rhodophyta Genus: Prionitis Species: Lanceolata http://www.mbari.org/staff/conn/botany/reds/Aliceweb/taxonomy.htmlHabitat: Found around the world including polar and tropical waters. Most commonly found in coral reefs and tide pools. http://marinelife.about.com/od/plants/p/redalgae.htm,Exact number of species varies from 6,000-10,00 based on classification prefer to adhere to. Majority of know species are multicellular Only 200 species occur in freshwater. Can live at greater depths then most algae due to the fact that blue light penetrates water deeper and the pigments allow red algae to photosynthesize. Some species only contain a small amount of the pigment and can look green or bluish. In some countries it is used as food and also in beauty supplies. http://marinelife.about.com/od/plants/p/redalgae.htm,Good vs. Bad,Good (Coralline Algae) http://www.aquaticcommunity.com/algae-control/red.php Important in the formation of tropical reeds Secrete a hard shell of carbonate around themselves,Bad ( Red Tide) Human illness and mortality following consumption of or indirect exposure to HAB toxin Substantial economic losses to coastal communities and commercial fisheries HAB-associated fish, bird and mammal mortalities. http://www.whoi.edu/redtide/,A red algae tide(Bloom),,http://blog.soleilorganique.com/sun-protection/seaweed%E2%80%99s-place-in-the-sun/,RESOURCES,http://www.ucmp.berkeley.edu/protista/rhodophyta.html http://www.mbari.org/staff/conn/botany/reds/Aliceweb/taxonomy.html http://marinelife.about.com/od/plants/p/redalgae.htm http://www.whoi.edu/redtide/ http://www.aquaticcommunity.com/algae-control/red.php,
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