Density Dependent and Independent Factors
This increases when a lot of prey species are present in an area
What is predation?
These two types of factors limit a population size
What are density dependent and independent factors?
this allows a population to grow exponentially
What are unlimited resources (and little to no competition and disease)?
This moth is known in Maine for being invasive and having many urticating hairs that can cause a rash.
What is the browntail moth?
This type of natural disaster, named Lee, recently hit Maine and may have caused some populations to decline
What is a hurricane?
The maximum rate of increase per individual
What is biotic potential?
This is the exponential growth curve. Draw it on the board.
See the board.
This shrub has edible berries and spreads rapidly around Maine, outcompeting many native species
What is Autumn Olive?
This unique type of "predator" is spread in areas of high population density. The host may survive, but is weakened and reproductive rate may decrease.
What is a parasite?
The population size at which births are balanced by deaths
What is the carrying capacity?
This is the logistic growth curve. Draw it on the board.
See the board.
This caterpillar resembles the invasive caterpillar common in Maine right now.
What is the Eastern Tent caterpillar?
This can spread between members of a population when many individuals are clustered together in a small habitat (i.e. high population density)
What is disease?
This is represented by rmax in the logistic growth equation
What is the net reproductive rate?
When using the exponential growth formula, the rate must be converted to this.
What is a decimal?
This invasive shrub (discussed in class) is considered a poor food source for wildlife because of this.
What is a high carbohydrate content and low fat and protein levels?
This class of chemicals can wipe out many insect populations at once, regardless of species
What is a pesticide?
This is represented by K in the logistic growth equation
What is the carrying capacity?
This equation is used to model exponential growth
This feature of the invasive shrub discussed in class allows it to succeed where many other shrubs do not.
What is its ability to fix nitrogen?