Dispersion and Ecological Measurement

Question 0

3 types of dispersion

Answer 0

Clumped
Uniform
Random

Question 1

Dispersion

Answer 1

How individuals are spaced in a population

Question 2

Clumped

Answer 2

Separated in chunks, ex: humans, fish

Question 3

Uniform

Answer 3

Laid out in perfect order, ex: birds

Question 4

Random

Answer 4

Randomly spread out, ex: bears, sloths

Question 5

Reasons for estimating population size

Answer 5

Prevent overpopulatin
Prevent extinction
Determine carrying capacity

Question 6

3 ways to estimate population size

Answer 6

Random sampling
Point intercept
Capture mark and recapture (Lincoln-Petersen index)

Question 7

Random sampling

Answer 7

Divide area into equal quadrants, randomly select a few quadrants and count all organisms in selected quadrants, find average of those then multiply the average by total number of quadrants

Question 8

Point intercept

Answer 8

Draw a line 10 meters out, count every organism that falls in the line, multiply number of organisms on the line by total square area

Question 9

Capture mark-recapture (Lincoln-Petersen index)

Answer 9

Capture small amount of organisms and mark them, release back into wild, overtime recapture more and keep track of how many have the markings, then multiply marked by total amount captured divided by amount recaptured with mark