GEOG 101 - Lecture 10 (Logistic Growth and Carrying Capacity)
There are lots of things that stop population from growing that include densitydependent factors
The logistic equation incorporates limit
GEOG 101 - Lecture 9 (Factors affecting Population Size)
Population size can be determined 2 factors:
1. Density-independent does not depend on density of population (ex. fire,
tornado, environment e
GEOG 101 - Lecture 8 (Population Growths)
This predicts the size of an exponentially
growing population at any time t, if we have
an
estimate for r and know N(0), the initial
population size
The
graph
GEOG 101 - Lecture 7 (Geometric vs. Exponential Growth)
Lambda ~ Geometric growth rate; also known as the (per capita) finite rate of
increase
When lambda = 1, the population is stable (population is
GEOG 101 - Lecture 6 (Exponential Growth)
Example: Loggerhead sea turtles
Endangered (threatened by development on nesting sites and commercial
fishing nets)
What affects population growth and size
GEOG 101 - Lecture 5 (Growth in Populations)
Population size growing but there is bouncing around early on
Eventually, the slope of line is same = stable age distribution
The growth rate (lambda) can
GEOG 101 - Lecture 4 (Life Table Data)
Life table data can be used to project the future age structure, size, and growth rate
of a population
A population can be characterized by its age structure th
GEOG 101 - Lecture 3 (Survivorship)
Survivorship is high until 70s-80s
Survivorship varies among human populations
In Gambia lot of females die before 5 years old
Different survivorship at different
GEOG 101 - Lecture 2
Example: Data for a life table for the grass
Poa annua were collected by marking 843
naturally germinating seedlings and then
following their fates over time
3 thing important for
GEOG 101 - Lecture 1
All organisms live in populations
All organisms produce offspring and interact with future generations
There are benefits (acquire resources, production, alter environment somewa