Food relationships
Lowest level of energy pyramid
Producers
Relationship where one species benefits and one species is harmed
Parasitism
Give an example of a Keystone species from the videos we watched.
Wolves, Sea otters, Pisasters Sea Star
What shape is a logistic growth curve?
S-shaped
What is the 10% rule?
10% of energy is received from the lower level to the level above. 1000-100-10-1
Relationship where both species benefit
Mutualism
What is the definition of a keystone species?
A species that plays a huge role in controlling the health and structure of the ecosystem
What in an environment limits the logistic growth curve from reaching its full potential?
The carrying capacity of the ecosystem
Why are their so few organisms at the top trophic level in ecosystems?
Energy is transferred upward and lost. There can only be so many higher-level consumers due to the amount of low-leveled consumers in the ecosystem.
Give an example of parasitism
Mosquito, Tick, Many options
What impacts can an invasive species have on an environment?
Can take up scarce resources, can move into an area quickly and dramaticaly change the overall ecosystem and destroy natural areas
What is the part of an exponential growth graph called before it starts to "Takeoff"?
Lag phase
What type of relationship negatively impacts both species and is commonly associated with food?
Competition
Relationship where one species benefits and one species is not harmed
Commensalism
Give an example of an invasive species we have learned about in class. Explain why it is invasive and how it might have got there.
Any of the 4 invasive species from the Africa article and their associated mechanisms
Name 3 limiting factors in population growth
Temperature, Natural disasters, Disease, competition, Growth rate
Put these animals in a proper food chain. Grass, Grasshopper, Rabbit, Hawk with their trophic levels
Grass to Grasshopper to Rabbit to Hawk
Give an example of commensalism
Nudibranch and shrimp, many other examples
Explain the concept of Trophic Cascade
Trophic cascade is when one species greatly affects each species below it in the food web/ trophic levels. Example the sea otters controlling the sea urchin population, which in turn controls the kelp population
Give the full 2 differences between logistic and exponential growth. What types of organisms are associated with exponential growth.
S-shaped vs J-shaped and limited growth to unlimited growth. Typically bacteria or cells for exponential growth