What type of survival strategy is defined by organisms that are fairly large, mature slowly, live fairly long, and care for their offspring.
What is K selected species.
100
Which survivorship curve demonstrates a mortality rate that is more or less constant with age?
What is type II.
100
The number of individuals per unit area is the population's ______________.
What is density
100
The doubling time for a population with a growth rate of 2% is ____________ years.
What is 35 years.
200
What shape does an exponential growth curve have?
What is J shape
200
What type of survival strategy is defined by organisms that are are opportunistic pioneers and do not care for their offspring.
What is r-selected
200
Which survivorship curve is typical for organisms that have a large number of offspring with only a few surviving to maturity.
What is type III.
200
Up until the middle ages, the human population was mostly limited by _______________ and _______________.
What is disease, famine, and war.
200
A population growing at 1% per year should double in about _____________ years.
What is 70.
300
Define exponential population growth.
What is increasing population size at an ever increasing rate
300
Widespread starvation would be an example of density dependent/density independent population control.
What is density dependent
300
Which survivorship curve shows a high juvenile survival rate, high survival in reproductive ages, and a tendancy for most individuals to reach old age.
What is type I
300
The main cause of world population growth in the past 300 years has been _________________.
What is falling mortality due to longer life expectancy
300
A network of distinct but interacting populations is called a ______________________.
What is metapopulation.
400
Define logistic growth.
What is rapid growth when conditions are good, then slowed growth as the population approaches carrying capacity.
400
What survival strategy (k or r) is defined by organisms that produce many offspring in a short period of time and have low survivorship early in life.
What is r-selected
400
Which survivorship curve is typical of trees that experience a high early mortality, but once established live a long time.
What is type III
400
Describe the general shape of a histogram for a country with a growing population.
What is pyramid shaped.
400
Why is Russia's population declining?
What is the standard of living has decreased leading to higher death rates & lower birth rates.
500
Define Carrying Capacity.
What is the maximum population size that can be supported by the available resources on a long term basis.
500
Name 3 density dependent population control factors.
What are predation, stress, competition, overcrowding...
500
What type of survivorship curve do humans have?
What is type I.
500
What occurs during a demographic transition?
What is movement from high birth and death rates to low birth and death rates.
500
Summarize the human population theory held by Thomas Malthus.
What is humans would outstrip resources and then suffer starvation and misery.