Population Ecology
If the prey population decreased, what would happen to the predator's population?
The arrow points in the direction of what in a food web/
In the direction of energy flow
A tree is deforested, leading to a reduction in shelter, what type of ecological relationship would this facilitate?
Competition
Why is burning fossil fuels an issue?
Increases CO2 (greenhouse gas) emission, increasing ocean temperatures
How is nitrogen fixation similar to carbon fixation?
Both take a gas and create a solid
An ecosystem has the food to feed 200, the shelter to house 50, and the water to support 100, which of these is the limiting factor?
Shelter
If an owl eats both primary and secondary consumers, what trophic level(s) will they be at?
Woodpeckers eat bugs out of trees, what is the ecological relationship the woodpecker has to the insects?
Predation
Carbon fixation can also be called what?
Photosynthesis
What process produces nitrogen gas?
Denitrification
What do you call the role an organism plays in its environment?
Niche
What percent of energy moves up each trophic level?
10%
In a very hot environment, an animal takes refuge under a tree. In this context, what type of ecological relationship is this?
Commensalism
What is the equation of photosynthesis?
6CO2 + 6H2O = C6H12O6 + 6O2
What is the end product of nitrogen fixation?
Nitrates
Name a density-independent limiting factor?
Natural disaster/human influence
How is energy lost moving between trophic levels?
Through heat
Barnacles often latch onto whales, and sometimes, their population increases to an extent that the whale can no longer properly swim. In this context, what type of ecological relationship is this?
Parasitism
What two processes have to happen in order to create a fossil (use specific vocab)
Decomposition and sedimentation
How many times does the nitrifying bacteria have to perform nitrification to turn ammonium to nitrates?
Twice
What type of population growth shows the carrying capacity?
Logistic
What percentage of energy makes its way to the tertiary consumer from the producers?
0.1%
Sometimes leeches are used medically to return blood flow to an affected area, what kind of relationship do they have in this context with people?
Mutualism
What is it called when CO2 dissolves into water?
Dissolution
If an animal dies in an ecosystem, what three steps must happen for the nitrogen in that animal to be absorbed by a plant?
Ammonification, nitrification, assimilation