Mark Recapture

What type of sampling involves tagging an individual and releasing them back

• Mark and Recapture

• Fogging

• Netting

• Transect

Which types of sampling methods would be best used for mobile organisms?

• Fogging and Mark and Recapture

• Quadrant and Transect

• Quadrant and Fogging

• Transect and Fogging

If 50 crabs were captured and marked and then released and then a few days later 25 were caught and of those 5 were marked. What would the estimate of the population be?

• 500

• 250

• 75

• 200

Tags

NGSS.HS-LS2-1

NGSS.HS-LS2-2

Conservationists want to find the population of a species of mountain goat. On one day they capture 12 goats, tag them and release. A week later they capture 8 goats, 5 of which are tagged. What would the estimate of the population be?

• 19

• 40

• 72

• 30

What is this method called?

• Sampling

• Mark-Release

• Capture-Recapture

• Random sampling

If I wanted to know how many blades of grass are inside the track, which sampling method could I use?

• count every blade of grass

• Mark a random number of blades of grass, return two days later and recapture the blades

• Divide the grassy area into 1 inch sections, randomly pick several sections to count, average them together and multiply that by the total square inches.

Which of the following accurately describes the difference between mark recapture and quadrat sampling?

• Quadrat sampling is used for mobile populations and mark recapture is used for stationary populations

• Quadrat sampling is used for stationary populations and mark recapture is used for mobile populations

• Quadrat sampling can only be used for small populations

• Mark recapture sampling can only be used for small populations

Which method is used to estimate the population size of animals by capturing, marking, releasing, and recapturing them?

• Mark and Recapture

• Quadrat Sampling

• Transect Sampling

• Fogging

In a mark-recapture study, 100 fish are captured, marked, and released. Later, 50 fish are captured, and 10 of them are marked. What is the estimated population size?

• 500

• 1000

• 200

• 250

What is a key assumption of the mark-recapture method?

• Marked individuals mix randomly with the population

• Marked individuals are more likely to be recaptured

• The population size decreases over time

• The marks are visible only to researchers