Population density and dispersion

Question 1

How to measure population density

Answer 1

Count all individuals.
Count individuals in random sample areas or along transects.
Convert from density of indicators (Nest, Burrows, Fecal droppings etc).

Question 2

Capture, mark, recapture

Answer 2

Capture a set of individuals.
Mark and release them.
Wait for them to mix.
Capture a set.
The proportion of marked individuals in the second sample is approximately the same as the proportion of marked individuals in the whole population.

Question 3

Demography

Answer 3

The study of the rates of birth, deaths, migration, and factors that cause them to vary

Question 4

Life tables

Answer 4

Life table summarises survival and reproductive rates n different age groups
Based on single cohort
Requires long term study of population with marked individuals (birds, mammals, plants)