Density dependent and independent factors

A group of organisms of the same species in a given area

• population

• community

• ecosystem

• biome

A Factor that would increase the size of the population

• Emmigration

• Death Rate higher than Birth Rate

• Birth Rate Higher than Death Rate

• Drought

A factor that influences the size of the population, despite how crowded it is

• Density Dependent Factor

• Limiting Factor

• Disease

• Density Independent Factor

Tags

NGSS.MS-LS2-4

A factor that is more likely to affect crowded population much more than spread out population

• Density Dependent Factor

• Limiting Factor

• Natural Disaster

• Density Independent Factor

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

An example of a density dependent factor

• Natural Disaster

• Disease

• Density Independent Factor

• Height of Individuals

A factor that decreases the population or keeps it from increasing

• Limiting Factor

• Food Surplus

• High Birth Rate

• Carrying Capacity

Tags

NGSS.HS-LS2-6

NGSS.HS-LS4-2

Example of a density dependent factor

• Natural Disaster

• Predators

• Climate

Tags

NGSS.HS-LS2-2

NGSS.HS-LS2-6

Example of a density independent factor

• Natural Disaster

• Disease

• Resource Availability/Competition

• Predators

Tags

NGSS.MS-ESS3-2

There are many rabbits in the summer, when winter comes, many rabbits starve or freeze & die

• Weather/Seasons is a Density Independent

• Weather/Seasons is a Density Dependent

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

A baby tree cannot get enough light because other trees around it are close and block sunlight

• Density Dependent Factor: Competition

• Density Independent Factor: Competition

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS1-5