WorksheetsWeek 8 ecology review
Total questions: 11
Worksheet time: 37mins
if species 3 is a strong competitor to species 1 and species 2 is a not so good competitor with species 1 , how would you compare their alpha competition coefficient?
α13=α12
α13<α12
α13>α12
Which of the following are assumptions of the Lotka-Voltera equation (select more than 1)?
Growth of host population is limited ONLY by predation
The predator is a specialist and can only persist if that host is present
Individual predators can consume an infinite # of hosts
Predator and host encounter each other randomly in a homogenous environment
After wolves were reintroduced into Yellowstone National Park, what was one consequence of the "ecology of fear"?
There were less deer
Waterways in Yellowstone Park became a refuge for aspen and willows
There was an increased number of wolf parasites
The diversity of a community before and after a disturbance (for example, a fire) is a measure of ________ diversity. The diversity of 1 community at 1 point in time is a measure of ________ diversity.
Gamma, alpha
alpha, gamma
beta, alpha
alpha, beta
community 1 is made up of 25% species 1, 25% species 2 and 25% species 3
community 2 is made up of 50% species 1, 40% species 2 and 10% species 3.
Which statement is true?
community 1 has a higher diversity than community 2 because of better species evenness,
community 2 has a higher diversity than community 1 because of better species evenness
What kind of response does the graph show? Check all that apply (more than 1)
Type 3
Type 2
Functional
Type 1
Isometric
What factors affect the shape of this curve? Check all that apply (more than 1).
Handling time
The number of predators
Satiation (when the predator is full)
Search Image
This is an example of a:
Density independent response
Density dependent response
Secondary response
Competitive response
Which of the following are density dependent facotrs? Select all that apply (more than 1)
competition
rising temperatures
disease
parasitism
floods
A biologist wanted to sample a community of organisms and sampled the organisms that all feed in the same way but that don't all use the same resource. This is an example of which of the following subsets:
Life form
Guild
Functional
Taxonomic
The food web pictured shows 4 trophic levels. If a poacher kills 4 lions, what happens to the green plants?
Green plant biomass will increase because of a trophic cascade
Green plant biomass will decrease because of a trophic cascade
Green plant biomass will increase because of bottom up controls
Green plant biomass will decrease becaise of bottom up controls
