1D : Monitoring Populations

Question 1

Indicator Species

Answer 1

Their presence, absence or abundance give info on environmental qualities, such as presence of a pollutant.

Question 2

N = MC/R

Answer 2

N = total population
M = first capture marked
C = second sample captured
R = recaptured and marked

Question 3

This method assumes…

Answer 3

…all individuals have an equal chance of capture, there is no immigration, those marked have mixed fully and randomly with total population.

Question 4

Methods of marking

Answer 4

Banding
Tagging
Surgical Implantation
Painting
Hair Clipping

Question 5

Marking must…

Answer 5

…minimise the impact on the study species