Population Ecology Flashcards
1
Q
characteristics of populations that can be measured
A
- Size, density, distribution
– Growth rates, births & deaths
2
Q
what’s a populations
A
groups of individuals of the same species living together
3
Q
as you get higher on the trophic level…
A
population density decreases (deer vs. tigers)
4
Q
instead of counting individual animals…
A
use indirect indicators like nests, droppings, burrows
5
Q
mark-release-recapture method
A
R (marked recap.s) / T (total in 2nd sample)
M (marked initially) / N (total pop. size)
6
Q
quadrats
A
used to count plants
7
Q
demography
A
studying emigration, immigration but primarily birth and death rates
8
Q
growth eqn.
A
ΔN/Δt
(change in pop. size) / (change in time)
9
Q
B - D = ?
A
ΔN/Δt
10
Q
only exponential growth eqn on final
A
rN = B-D
(positive = incr. pop. size)
11
Q
A
