If you toss a coin what is the probability that it will be heads?
50%
wild-life radio tracking
they put a transmitter on an animal and can figure out where it is
used to collect aquatic animals and plants in shallow water
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%
Infrared
past the visible spectrum of red light and used in photography to pick up on stuff that you can't see
How do live traps work?
Humanely trap an animal so that it can be studied/tagged and released with minimal harm to the animal.
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%
passive sampling
none of the organisms are removed from the quadrats that are being sampled
What is helicopter net/gunning?
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%
quadrat sampling
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.
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.
Lincoln Index
a way to estimate wildlife that move over long distances and is based on capture-mark-recapture sampling
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