Populations and ecosystem changes
What is carrying capacity?
The maximum population size a habitat can support.
Example of a disturbance
Wildfire
Low level hurricane
Low level tornado
Low level earthquake
Small landslide
Small flood or drought
Three types of symbiotic relationships.
Commensalism
Mutualism
Parasitism
What is the chemical backbone of life?
Carbon
What is the definition of biodiversity?
Variety of life
What are the two types of graphs that model populations? Which is more realistic?
Logistic and Exponential
Logistic
Example of a disaster
Large earthquake, hurricane, or tornado
Tsunami
Large wildfire
Two types of competition
Interspecific
Intraspecific
What transforms nitrogen so animals can absorb it?
Bacteria
Biodiversity can be referred to as a web of what?
Life
Why is random sampling important?
To make sure populations are balanced.
So we can estimate entire population size
Make sure no species are threatened or endangered
The first species in a ecosystem is know as a ___________ species.
Pioneer
Mosquitoes feed off the blood of all kinds of animals. The mosquitoes receive nourishment while the animal is harmed. What type of relationship is this?
Parasitism
What is the first stage in the nitrogen cycle?
Nitrogen fixation
Biodiversity in reduced by
Pollution
Habitat degradation
Extinction
Three types of population distribution.
Uniform
Clumped
Random
Primary is in an area with no soil.
Secondary happens in a place with soil (after a wildfire)
The same species fighting for a common resource is known as what type of competition?
Intraspecific
Increased carbon dioxide in the atmosphere causes what?
Global warming
Lionfish are known as a what? Why?
Invasive species
They damage coral reefs
The Rafflesia flower has the "stench" of a dead body to attract flies to pollinate them. This adaptation is an example of what?
Coevolution
True or false: Predation and competition are virtually the same
False
There are two ways humans hurt the environment using nitrogen. Name one.
Excess nitrates in fertilizers
Nitrous oxide released when burning fossil fuels
____________ is the elimination of a species from Earth
Extinction