Bio 201 F09 Lowry lect 31 (L31) populations II

Bio 201 F09 Lowry lect 31 (L31) populations II - Fact of...

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Fact of the day Types of survivorship curves • Type I – Most individuals are lost when they are older – Vertebrates or organisms that exhibit parental care and protect their young • Type II – Almost linear rate of loss – Many birds and some invertebrates Type II Survivorship Curve Types of survivorship curves • Type I – Most die when older – Vertebrates or organisms w/ parental care – Small dip at young age • Type II – linear rate of loss – Many birds, invertebrates • Type III – many lost in juvenile stage – Invertebrates, many plants, and marine invertebrates without parental care – Predation, establishment
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Type I T y p e I Type III Many mammals Many birds, small mammals, lizards, turtles Many invertebrates Age Number of survivors (n ) (log scale) x 1000 100 10 1 0.1 Population Growth Collecting data on how populations change Predicting population changes with models
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Population Growth Collecting data on how populations change Predicting population changes with models
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This note was uploaded on 03/22/2010 for the course BIO 200 taught by Professor Stone during the Spring '10 term at SUNY Stony Brook.

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Bio 201 F09 Lowry lect 31 (L31) populations II - Fact of...

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