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28 Cards in this Set

  • Front
  • Back
population
group of individuals of a single species in same area
mark capture tecnique
marking boxes + proportion of population size
3 patterns of dispersion and most common
clumped

random

uniform
territoriality
protection of own land
demography
statistics of population change...life/death rates
2 methods of demography
life tables

survivorship curves
life tables
age specific summaries of life rate
survivorship curve
plot of population # as age increases...starts with 1000
Type I, Type II, Type II survivorship curve
see notes
2 key changes in population
reproductive rate and survivorability
life history
traits that effect reporduction and survival of a species
big bang/ semelparity
1 chance to reproduce
repeated/ iteroparity
many times to reproduce
exponential model
N/T = B-D
per capita birth rate
B = bN

% of being born
per capita death rate
D = mN

% dying or can die
per capita rate of increase
r = b-m

if > o, increase in pop. #
why kind of curve is exponential and what conditions?
J shaped + unlimited resources, perfect environment
logistic model
S curve

N= pop size
K = carrying capacity
Alle Effect
if pop is too small, survial decreases...plants in wind example
K selection
density dependent
R selection
density independent
if populations immigration + emigration rate is =, what does it depend on tehn to chang?
birth + death rate
density dependent regulation
- feedback

competition for resources
territoriality
predation
toxic wastes
instrinsic factors
metapopulation
grous of populations linked together by emigration, immigration

patchiness forms
3 reasons why populations fluctuate
food shortage in winter

predator-prey

food/resource limitation
ecological footprint
summarizes the land + water appropriate for each nation to produce enough for its citizens
ecological capacity
actual resource base