### Section 4. Middle Years: 1941–1960 (Part 1)

- Elephant population was becoming large
- Park staff worried about elephant effects on other flora and fauna in park

Calculate values for the **“unused portion of K, [1-(N/K)]”** (round up to the second decimal) and for the **population growth rate (ΔN/Δt)** (round up to the nearest highest whole number). The values of N used here are estimated from the model using ** r _{max} = 0.15 and K = 7500 ** (you will look at the actual recorded data for N later in this lesson). Click here if you need help.

#### In the park

By the 1960s, wardens were becoming very concerned about elephant overpopulation in the unnaturally constrained space in KNP. Click **“Next”** to go to **Time Period Four**.

Period | Year | N | 1-(N/K) | ΔN/Δt |
---|---|---|---|---|

1 | 1905 | 10 | 1.00 | 2 |

2 | 1930 | 613 | 0.92 | 85 |

1935 | 1189 | 0.84 | 151 | |

1940 | 2139 | 0.71 | 230 | |

3 | 1944 | 3157 | - | - |

1946 | 3750 | - | - | |

1950 | 4810 | - | - | |

4 | 1996 | 7500 | - | - |