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![Page 1: Blue-Green Algae (Cyanobacteria) (PDF) - US EPA · PDF fileBlue-Green Algae (Cyanobacteria) Sarah Rushforth, M.S. Rushforth Phycology Phycological Research Consortium (801) 376-3516](https://reader035.vdocuments.us/reader035/viewer/2022062302/5a7884767f8b9ae91b8b72be/html5/thumbnails/1.jpg)
Blue-Green Algae(Cyanobacteria)
Sarah Rushforth, M.S.Rushforth PhycologyPhycological Research Consortium(801) [email protected]
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Blue-Green Algae: “Pond Scum”
Images: Sarah Rushforth
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Blue-Green Algae
Aphanizomenon sp.Gloeotrichia sp.Dolichospermum crassum
Images: Sarah Rushforth, Mindy Morales, and Kalina Monoylov
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Algae: The World’s Most Important Plants
Images: Sarah Rushforth, Mindy Morales, and Kalina Monoylov
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Prokaryote Eukaryote
Prokaryotes EukaryotesDevelopment 400 million years ago 150 million years ago
Cell structure No nucleus, chloroplasts or mitochondria(Bacteria)
Nucleus, chloroplast, range of developed cell structures
Cell wall Proteins and carbohydrates
Cellulose, silica
Movement Gliding, mucilage and pores in cell wall (few are motile)
flagella
Specialized cells HeterocytesAkinetes
Varies by class and genera
Algae type Cyanobacteria All other classifications
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Blue-Green Algae: The “A” that shouldn’t be in “Harmful Algal Bloom”
Prokaryotes• Only organisms within all types of algae that
are prokaryotes
• Bacteria
• Conduct photosynthesis• Primary producers• Produce oxygen
Blue-Green Algae = CyanobacteriaNot an “A” at All
Snowella species
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Cyanobacteria andOXYGEN
• Cyanobacteria release oxygen through photosynthesis
• Only producers of oxygen over several hundreds million years in the biosphere.
• No life on land prior to release of oxygen into atmosphere by cyanobacteria