lec 5- populations

Question 1

what constitutes a population?

Answer 1

interbreeding individuals of a species, some distinctions between a population

Question 2

how does population vary in space?

Answer 2

it varies by distribution and dispersion

Question 3

distribution: what shapes species/ population boundaries?

Answer 3

historical filter = where taxa evolve
physical filter = habitat requirements, environmental limits
biological filter = other species like predators, prey etc.

Question 4

dispersion: what are types of dispersion of a population of organism?

Answer 4

clumped together = driven by predators, and resources that are clumped
uniform = territoriality, strict competition
random = most common, patchy resources, predators, unpredictable disturbances

Question 5

what is the formula for mark and recapture

Answer 5

N = M/r
N = estimated number of population
M = marked
r = (proportion of recaptured in a sample, marked in sample/ sample)

Question 6

what is the point of mark and recapture?

Answer 6

To estimate a population that is hard to count individually