AP Bio Chapter 52 Part 1 Flashcards
Populations are
Dynamic
Population
All numbers of a species in a contiguous area
What are the two ways organisms can enter a population
Birth / immigration
What are the 2 ways an organism can leave a population
Death / emigration
Exponential growth
The growth of a population continues indefinitely
Assumes no resource, limitation
How can exponential growth be described
Change in number of individuals/change in time
What’s the abbreviation for change in number of individuals
DN
What’s the abbreviation for change in time
dt
r=
Per capita rate of increase
Logistical growth
The growth of a population decreases as the population approaches the “carrying capacity” of the environment
What’s the abbreviation for carrying capacity
K
What does logistical growth model
Resource limitations
What’s the relationships between K and r and N and K
The effect of K on r becomes greater as N approaches K
How is population size accurately measured
Mark recapture
How is mark recaptured executed
Capture and mark members of a population
Release them
Recapture members of the population
Do equation
What’s the equation for mark and recapture
of marked individuals / total population size = recaptured marked individuals / total captured individuals
Population distribution, examples
Individuals tend to be distributed in 3 major patterns
Clumped (most common)
Uniform
Random
Demographics
The study of a population’s vital statistics and how they change over time
How can demographic data be arranged
In tabes (life tables, reproductive tables) Or graphs (survivorship curves)
How many types of survivorship curves demonstrated in real populations
3
