# Population Dynamics

## Biogeochemistry

Definition, scale, and studies. Earth as a biosphere.

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• Watch video clip from Lecture 16 (10:47 - 16:36)

## Population Ecology–Introduction

Introduction to population ecology, measurements of births, deaths, and success.

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• Watch video clip from Lecture 29 (36:48 - 45:20)

## Measure Abundance

Use mark and recapture to measure population and survival rates. Used for widely distributed populations such as birds and butterflies.

Course Material Related to This Topic:

• Watch video clip from Lecture 29 (5:14 - 9:08)

## Age Structure

Age structures of various countries and societies.

Course Material Related to This Topic:

• Watch video clip from Lecture 29 (9:08 - 16:02)

## Cohort Life Tables–Definitions and Analysis

Quantify survivorship probability and replacement rates using cohort and static life tables. Definitions of variables.

Course Material Related to This Topic:

• Watch video clip from Lecture 29 (16:02 - 33:17)

## Exponential Population Growth and Stable Age Distribution

Assumptions and calculations for growth and doubling time of a population with stable age distribution.

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• Watch video clip from Lecture 29 (33:17 - 42:30)

## Human Population Growth I

Limits on exponential growth and application to the human population. Density dependent response as a stabilizing factor. Example: The US population.

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• Watch video clip from Lecture 30 (0:00 - 6:10)

## Logistic Versus Exponential Equation

Logistic Equation to model density dependent response by placing restraints on the exponential population growth. Definition of new variables. Example: Fisheries.

Course Material Related to This Topic:

• Watch video clip from Lecture 30 (6:10 - 15:03)

## Time Lag

Logistic equation assumes instantaneous feedback. Needs to introduce time lag into the equation.

Course Material Related to This Topic:

• Watch video clip from Lecture 30 (15:03 - 22:19)

## US Population Study

Study of the population in the US since the 1800 as modeled by the Logistic Equation. Use regression to predict the carrying capacity.

Course Material Related to This Topic:

• Watch video clip from Lecture 30 (22:19 - 28:00)

## Global Population Study

Global human population since 1000 BC until today. Projections for the future. Population growth matches with the changes in global metabolism/cycles.

Course Material Related to This Topic:

• Watch video clip from Lecture 30 (28:00 - 34:39)

## Demographic Transition

Population growth levels off when birth rate declines faster than death rate. Examples: Sweden as developed country and Egypt as developing country.

Course Material Related to This Topic:

• Watch video clip from Lecture 30 (34:39 - 39:45)

## Carrying Capacity of the Earth

Maximum population that can be supported by the earth. Examine if carrying capacity can be increased by technology. Various models that predict functions of population growth with respect to the carrying capacity.

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• Watch video clip from Lecture 30 (39:45 - 45:43)

## Predators and Population

Cohort life table built on measured population data. Effect of predator migration on the replacement rates of prey. Survivorship curve of various cohorts.

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## Cohort Life Table, Replacement Rates, and Survivorship Curves I

Using data on population to calculate survivorship, mortality rate, average remaining life expectancy, and average life expectancy. Draw and interpret survivorship curve.

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## Replacement Rates

Using data on population and birth to calculate fecundity, realized fecundity, net reproductive rate, and the stability of the population.

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## Carrying Capacity

Potential solution to maintain population below carrying capacity.

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