Species Interactions
Energy in an Ecosystem
Biodiversity
HI on Biodiversity
100
A primary consumer is also known as what?
Primary consumer = herbivore (they eat the producers)
100
What are the trophic levels from producer up to quarternary consumer?
producer -> primary consumer -> secondary consumer -> tertiary consumer -> quarternary consumer
100
What are the 3 types of biodiversity?
genetic diversity - difference in genetics of a species
species diversity - diversity of species (# different species) in a given area
ecosystem diversity - different ecosystems present in an area
100
What is a climax community
When all of the organisms of a habitat are there
200
A symbiotic relationship between two species where one benefits and one is harmed?
parasitic
200
What animal is a tertiary consumer?
Cougar or eagle
200
What is carrying capacity?
maximum number of organisms an ecosystem can support
200
When there is growth in an area where there has never been growth it is called ___________ succession
Primary
300
A symbiotic relationship between two species where both benefit?
mutualism
300
If 25000kcal of energy is available to the fox, how much energy will be available to the eagle?
2500kcal
300
What type of growth gives you a J-shaped curve and why?
exponential growth due to no limiting factors
300
What are the first species to grow in an area called
Pioneer species
400
A symbiotic relationship between two species where one benefits and one is not affected?
commensalism
400
If 25000kcal of energy is available to the deer, how much energy will be available in the grass?
250000kcal
400
What happens when a population nears or exceeds carrying capacity?
The population will crash/die off if it exceeds carrying capacity until it it under it, then it will increase until it stablizies around the carrying capacity. 
400
When do non-native species get considered invasive species and why?
When they start to have a negative impact on the ecosystem because they have no natural predators or competitors.
500
What type of species interaction is shown?
competition
500
What happens to the 90% of energy that is not passed up the trophic levels?
It is sued to maintain life functions, growth, and lost as heat to the environment
500
What is the difference between primary and secondary succession?
Primary succession occurs in a completely barren area with no existing soil or life, like a newly formed volcanic island,
Secondary succession happens in a previously inhabited area that has been disturbed by an event like a fire or flood, meaning it already has some existing soil and vegetation to build upon
500
Decreasing biodiversity may have what effects? give me 2
- decreased ecosystem sustainability
- increased rate of extinction
- decrease in natural resources
- potential loss of medicinal plants/animals