Lecture13-EutrophicationIII

Lecture13-EutrophicationIII - Eutrophication III ISP 217...

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1 Eutrophication III ISP 217 Dr. Peacor
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2 Eutrophication I Lecture Overview 1. 3-8. Introduction – summarize eutrophication. 1. 9-16. Nutrients and their effect on phytoplankton. 1. 17-32. Which nutrient limits phytoplankton growth: Liebig's law and limiting nutrients 1. 33-34. Limiting nutrient controversy: Science’s results are not what some people wanted to hear. (Previous) Lecture 13
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3 Eutrophication II Lecture Overview 1. 3-14. More on nutrient limitation – different water systems and lake aging 1. 15-19. Human generated sources of eutrophication - overview 1. 20-25. Point source: raw sewage and 3 negative effects. 1. 26-42. Raw sewage treatment: clean it up! 1. 43-48. Non-point sources of eutrophication (Previous) Lecture 14
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4 Eutrophication III Lecture Overview 1. Consequences: a) Algae blooms a) Fish Kills a) Dead Zones a) Property Values 2. Solutions a) Reduce sewage a) Poison a) Food web a) Reduce nutrient use – Lake Erie success story Lecture 15
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5 Consequences – Algae Blooms Phytoplankton blooms
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6 Toxic phytoplankton Can move up and down in water column cyanobacteria- freshwater dinoflagellates- marine Consequences – Algae Blooms
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7 Watson et al. 1997 Increase in cyanobacterial dominance with TP Consequences – Algae Blooms More nutrients (P) Amount of different algae groups
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8 cyanobacteria Surface scums (often toxic) Toxin removal cost $ for water utilities. Consequences – Algae Blooms
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9 Surface scums (often toxic) dinoflagellates (red tides) Red Tide Blamed for Calif. Bird Deaths SAN FRANCISCO (AP) — Hundreds of dead or injured seabirds have washed up on the shores of Monterey Bay in recent weeks, and scientists believe a red tide of marine algae is to blame. The affected birds include loons, pelicans, western
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Lecture13-EutrophicationIII - Eutrophication III ISP 217...

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