Intro. to Ecology
the largest population that an area can support is called its
carrying capacity
the struggle between organisms to occupy the same niche, and one may not survive
competition
How can a population get bigger?
when new individuals are added to the group which is immigration, birth rates go up
what is a population of all members of one species living in a particular area
habitat
adaptation
a skill that predator or prey have that helps them blend with the environment
What are the levels of organization in the environment?
organisms, populations, communities, and ecosystems
the organism that it killed is called
Prey
What environmental factor influence population size?
population growth, population deaths, limiting factors
What is the types of symbiotic relationship?
Commensalism, mutualism, parasitsm
any relationship in which 2 species live closely together and at least 1 of the species benefits
symbiosis
the bald eagle is one type of
organism
When the death rate exceeds the birth rate, the population size can
decrease
what factors can limit population size?
abiotic factors
Why does competition occur in communities?
organisms fight for a limited resource
prey
animal/organism eaten by predator
some of these are weather, space, food, and water
limiting factor
The interaction in which one organism kills another for food. Ex: shark eats fish
predation
What interactions between organisms can influence population size?
competition , birth rates, death rates
what does a predator eat?
their prey
Competition
When individuals or population try to use the same limited resource
the number of individuals in a area of a specific size
population density
the organism that does the killing is the
predator
Mr. Smith role in our ecosystem.
What is his niche
there are 100 squirrels living in a forest that is 5 square miles. What is the population density of the squirrel?
what is 20 squirrels per square mile
Abiotic factor
non living thing