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Predation II S10 - P r edation I I BIOL/BOT 160 Ecology...

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Click to edit Master subtitle style 3/28/10 Predation II BIOL/BOT 160 – Ecology
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3/28/10 Famous Predator – Prey Gause 1934 Populatio n size Tim e Photos by Marcel Holyoak Didinium nasutum PREDATOR Paramecium caudatum PREY P. caudatu m D. nasutu m ALL DIED!
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3/28/10 Famous Predator – Prey Gause 1934 Allowed immigration of prey Populatio n size Tim e Photos by Marcel Holyoak Didinium nasutum PREDATOR Paramecium caudatum PREY P. caudatu m D. nasutu m BOTH SURVIVED!
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3/28/10 Famous Predator – Prey Gause 1934 Sediment in bottom Populatio n size Tim e Photos by Marcel Holyoak Didinium nasutum PREDATOR Paramecium caudatum PREY P. caudatu m D. nasutu m Prey survived Predator died!
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3/28/10 What did the sediment Provided a refuge that would allow the population of Paramecium caudatum to increase without having the predator http://www.gov.im/lib/images/iomfinance/landscapes/refuge.jpg
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3/28/10 Rosensweig and With refuge In essence, the predator becomes extremely inefficient NPr ey NPr ed KPr ey KPr ed Predat or always dies
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3/28/10 Rosensweig and With a partial refuge A certain amount of the prey population will
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