A condition that limits the growth, abundance or distribution of an organism or a population of organisms.
What is a LIMITING FACTOR?
This is a tool for sampling.

What is a QUADRAT?

A sampling technique used to estimate population size
What is CAPTURE-RECAPTURE?
When calculating population growth, you need this value as well as immigration, births and deaths.
What is EMIGRATION?
Food, competition and predation are all types of these.
What is BIOTIC LIMITING FACTORS.
A type of sampling that is shown below.

What is STRATIFIED SAMPLING?
In the Lincoln Index, this letter is used to represent the total number originally marked.
What is CAPITAL M?
The mode of population growth that is shown below.

What is EXPONENTIAL GROWTH?
This term is used to refer to the point at which a system can be maintained.
What is EQUILIBRIUM?
A sampling technique that involves a transect line with quadrats placed along the transect.

What is BELT TRANSECT?
In the Lincoln Index, this letter is used to represent the total number captured in the second sample.
What is LOWERCASE N?
The mode of population growth resulting in early growth that accelerates quickly, and later growth that slows to zero.
What is LOGISTIC GROWTH?
What influence would an increase in mate availability have on the population?
What is AN INCREASE IN CARRYING CAPACITY?
A type of sampling.

What is SYSTEMATIC SAMPLING?
Read the question and calculate the answer using the Lincoln Index.
During a survey of a pond, biologists captured and marked 45 frogs. After allowing time for the marked frogs to mix back into the population, they captured 98 frogs in a subsequent survey, finding that 19 of them were marked.
What is the estimated total frog population in the pond?

What is 232 FROGS?
A city starts with a human population of 5,600. In one year, there are 1,280 births and 630 deaths. If during that same year, 432 people immigrate and 791 people emigrate, what is the population at the end of the year?
What is 5,891 HUMANS?
Determine the carrying capacity of wedge-tailed eagles in this ecosystem.
What is APPROXIMTELY 550?
What sampling method has been used?
What is RANDOM QUADRATS?
Read the question and calculate the answer using the Lincoln Index.
In a coastal study, researchers tagged and released 459 sea turtles. After a month, they captured another sample of 271 turtles, of which 46 were previously tagged. Using the Lincoln Index, what is the estimated total population of sea turtles in that area?
What is 2704 TURTLES?
A small island has an initial turtle population of 493. If it grows at a rate of 2.5% per year, what will the population be after 3 years?
Use the formula below:
P(t) = P0 x (1 + r)t
What is 531 TURTLES?