Probability
Terms
Capture-mark-recapture sampling
100

If you toss a coin what is the probability that it will be heads?

50%

100

wild-life radio tracking

they put a transmitter on an animal and can figure out where it is

100
How do aquatic dip nets work? 

used to collect aquatic animals and plants in shallow water

200

If you have a bag of marbles that have 5 blue marbles and 5 red marbles, what is the chance of pulling out a blue marble at random?

50%

200

Infrared

past the visible spectrum of red light and used in photography to pick up on stuff that you can't see

200

How do live traps work? 

Humanely trap an animal so that it can be studied/tagged and released with minimal harm to the animal. 

300

If you have a bag of marbles with 10 marbles; 6 are blue and 4 marbles are red, what is the probability of pulling a blue marble?

60%

300

passive sampling

none of the organisms are removed from the quadrats that are being sampled

300

What is helicopter net/gunning? 

Used for large animals when a helicopter flies overhead and the animal is tranquilized with a dart and/or a net is thrown over them. 
400

A jar contains 100 marbles total. Some are black. If you pull 4 marbles out and 1 is black, how many out of the 100 marbles would you guess are black?  Base your answer only on the information presented.

1 out of 4 black = 1/4   = 25%

400

quadrat sampling

a grid is placed over or on top of a habitat to mark out species
400

What is a mist nest?

Fine mesh nets that bats and birds can not see. There is mist that is sprayed on the nets. They animals fly into them and drop to a net at the bottom where the researcher quickly scoops them up.

500

A different jar has an unknown # of marbles but you know that it includes 100 black marbles. If you pull 4 marbles out and 1 is black, what is your guess for the total number of marbles?  

Base your answer only on the information presented.

1/4 = 25% then there must be 400 marbles in total.

500

Lincoln Index

a way to estimate wildlife that move over long distances and is based on capture-mark-recapture sampling

500

What 3 conditions need to be met for sampling to be accurate (under the Lincoln index) 


- the population of the organism must be closed

- the time span between taking the different samples must be short compared to the lifespan of the animals

- the marked organisms must mix completely with the rest of the population

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