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**Unformatted text preview: **this is a big deal • Geometric and exponential growth are Linear Processes : an N is never multiplied by another N: N 2 is a Non-Linear Process But in the “Real World” • Stuff happens -why are we not hip deep in bacteria? • A number of reasons • • environmental stochasticity (random stuff) that affects “r” • BIG DEAL ! t + 1 N = t N + r * t N * K − t N K ⎛ ⎝ ⎜ ⎞ ⎠ ⎟ Logistic Growth Time N K r and K Selection • r-selection - density independent – High growth rate – Many offspring; most do not make it – Large population fluctuations • K-Selection - density dependent – Low growth rate – Few offspring – Population at carrying capacity r and K • Simplification- • Continuum • Nice generalization • Equal Payoff r-selected spawners Flood the environment K selected Sorry…...

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