Ecosystem Dynamics
When primary producers in an ecosystem decrease in number, this is what happens to the consumer populations
What is decrease?
The lowest level on a food web shows this type of organism
What is a primary producer?
A relationship in which both organisms benefit. (ex: Coral & Algae)
What is mutualism?
Used to sample a small area of a habitat and record the number of organisms in that given space
What is a Quadrat?
what is released?
Removing an apex predator from an ecosystem will cause primary and secondary consumer populations to ______________.
What is increase?
The organisms on the second and third levels of a food web are known as
What are consumers?
A relationship in which one organisms benefits and the other is not harmed but does not benefit.
What is commensalism?
Certain animal populations like elephants, alligators, and hippos are best suited for the quadrat method because attempting to mark and recapture would be too ____________.
What is dangerous, difficult, hard, complicated?
True or False: The Mark - Recapture Method is always accurate in determining population numbers.
What is false?
__________ is transferred between organisms through consumption.
What is Energy?
An organism that eats meat only
What is a carnivore?
A relationship in which one organism benefits and the other organism is harmed. (ex: Human & Tapeworm)
What is parasitism?
A scientist uses a 2 m x 2 m quadrat to sample an area. They collect data using this quadrat 3 times. Calculate the total sample area.
What is 12 m2?
Which organisms in the food chain below would be best suited for mark and recapture?
Algae --> Aquatic Insect --> Painted Turtle --> Raven
What is painted turtle?
When an ecosystem is destroyed by a natural event like a forest fire or volcano but eventually comes back over time.
What is succession?
An organism that eats plants only
What is an herbivore?
When different species compete with eachother.
What is interspecific competition?
Which level of organism on a food web would be easiest to count using the quadrat method in a terrestrial ecosystem?
What is a primary producer?
When conducting the mark-recapture method, scientists assume that their marking method does not ____________ the survival of the marked individuals.
The name for a species that is essential to the ecosystem and if removed the entire ecosystem and organisms within it will suffer.
What is a keystone species?
The scientific term used to describe an organism that makes its own food
What is an autotroph?
When organisms of the same species compete with one another
What is Intraspecific Competition?
A scientist determines there are 3 turtles in every 1m2 of a park. Predict how many turtles there would be in a 5m2 area of the park.
What is turtles?
When conducting a population study scientists determine how accurate their results are using an equation that will tell them the _______________.
What is percent error?