Species Population Changes/Movement
L.EC.06.23 - Predict how changes in one population might affect other populations based upon their relationships in the food web
L.EC.06.32 - Identify the factors in an ecosystem that influence changes in population size.
L.EC.06.32 - Identify the factors in an ecosystem that influence changes in population size.
Population Density: The number of individual organisms of a species in a specific area.
Birth rate: The number of births in a population in a certain amount of time.
Death rate: The number of deaths in a population in a certain amount of time.
Emigration: species moving out of a population
Limiting Factor: An environmental factor that prevents a population from increasing.
Limiting factors include food, space, and weather conditions.
Carrying Capacity: The largest number of a population that an environment can hold.
- equation: number of individuals/unit area
Birth rate: The number of births in a population in a certain amount of time.
Death rate: The number of deaths in a population in a certain amount of time.
- If the birth rate > the death rate: the population increases
- If the death rate> birth rate: the population decreases
Emigration: species moving out of a population
Limiting Factor: An environmental factor that prevents a population from increasing.
Limiting factors include food, space, and weather conditions.
Carrying Capacity: The largest number of a population that an environment can hold.
Limiting Factors and Carrying Capacity (use for notes)
Mapping Forest Change Walk
How can maps help us identify forest change? Compare scatter graph data to examine the impact of a non-native, invasive insect, the hemlock woolly adelgid, on a population of eastern hemlocks.