Misc
the general place where an organism lives
Habitat
Any necessity of life
Resource
The scientific study of human populations.
demography
the number of individuals per unit area.
population density
Something that controls the growth of a population
limiting factor
How an organism lives within its habitat
niche
An interaction in which an animal feeds on plants
Herbivory
Why did the human population begin increasing exponentially during the industrial revolution?
Death rates fell
the size of the area inhabited by a population
geographic range
when individuals move OUT of a population’s range
emigration
limiting factors that affect all populations in similar ways, regardless of the population density
density independent
A symbiotic relationship in which one organism benefits and the other is neither harmed or helped
commensalism
In what stage of the demographic transition do advances in nutrition, sanitation, and medicine lead to lower death rates?
Stage II
how individuals in a population are spaced out across their range
Population dispersial
A decline of a predator population would result in THIS of its prey population
increase
occurs when organisms try to use the same limited ecological resource in the same place at the same time
competition
The ability to survive and reproduce under a range of environmental conditions
tolerance
Shows the number of males & females of each age in a population
Age Structure
2 factors that cause populations to increase in size
births & immigration
maximum number of individuals of a species that an environment can consistently support.
carrying capacity
When a population’s demand on an ecosystem exceeds the capacity of that ecosystem
Ecological overshoot
No two species can occupy the same niche in the same habitat at the same time because of THIS
Competitive Exclusion Principle
A measurement of human demand on nature
Ecological Footprint
When the canine parvovirus (CPV) killed the majority of wolves on Isle Royale in 1980, what type of limiting factor was at work?
Density Dependent
when a population’s growth slows and then stops, following a period of exponential growth
logistic growth