# Summary: Biological Modeling Of Populations 2020

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## Read the summary and the most important questions on Biological Modeling of Populations 2020

• ### 1 Math reader

This is a preview. There are 6 more flashcards available for chapter 1

• #### Linear systems only have solutions when?

The determinant is not equal to 0
• #### A stable node when?

Both lambda 1 and 2 < 0
• #### Imaginary eigenvalues when?

The discriminant is negative
• ### 3 Density dependence

This is a preview. There are 4 more flashcards available for chapter 3

• #### Negative density dependence

At high population densities the availability of essential resources is typically low, and this is expected to result in a lower fecundity and/or higher death rates.
• #### Density dependent birth, replicating population

Where K is the population size N of which the birth rate is 0
• #### Positive density dependence

When the population growth is regulated by an increased population density. This allows for multiple steady states.
• #### A Hill-function is a convenient tool for?

Defining increasing or decreasing non-linear functions.
• ### 4 Stability and return time

This is a preview. There are 3 more flashcards available for chapter 4

• #### To determine whether or not a steady state is stable

Take derivative/slope of N bar. If the slope is negative -> stable
• #### Unsteady stable states form the borders of?

Basins of attractions
• #### Steady states with a small basin of attractions are not resilient because?

Disturbances that breach the basin of attraction bring the population to an alternative attractor.
PLEASE KNOW!!! There are just 78 flashcards and notes available for this material. This summary might not be complete. Please search similar or other summaries.