Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

28 Cards in this Set

  • Front
  • Back
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


protection of own land
statistics of population 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
toxic wastes
instrinsic factors
grous of populations linked together by emigration, immigration

patchiness forms
3 reasons why populations fluctuate
food shortage in winter


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