Predictions and Competitive Outcomes Model

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What are the factors that determine competitive outcomes according to the Lotka-Volterra equations?

Only K

Both K and a (correct)

Only a

Only r

Which of the following is true about the competitive outcomes predicted by the Lotka-Volterra model?

Independent of a

Never dependent on K

Dependent on K and a (correct)

Always dependent on r

In the context of species interactions, what do the Lotka-Volterra equations predict when competition occurs?

One species wins (correct)

Unstable coexistence

Both species win

Stable coexistence

What is the significance of 'a' in the Lotka-Volterra equations when determining competitive outcomes?

Influences competitive outcomes along with K Signup and view all the answers

Which factor is highlighted as potentially important only in specific cases according to the provided text?

(r) - growth rate Signup and view all the answers

What does the growth rate of each species on its isocline equal to?

Zero Signup and view all the answers

In a competition scenario, if the equilibrium is at Kblue, what does this signify?

Blue species wins and goes to Kblue Signup and view all the answers

What type of equilibrium is present when there is an advantage to the species that starts out as the most abundant and/or grows the fastest?

Unstable equilibrium Signup and view all the answers

What do the Lotka-Volterra equations and isoclines help determine?

Species population dynamics Signup and view all the answers

What do the linked equations of the Lotka-Volterra model tell us about the growth rates of two species?

Indicates an equal growth for both species Signup and view all the answers

In a competition scenario described by Lotka-Volterra equations, what does it mean if one species is close to Nblue = 30 and the other is close to Nred = 45?

Both are in stable equilibrium Signup and view all the answers

According to the Lotka-Volterra competition model, which factor determines the competitive outcome between two species?

The carrying capacities and competition coefficients of the two species Signup and view all the answers

What are the four possible outcomes of competition according to the Lotka-Volterra model?

Exclusion, coexistence, one species always wins, either species can win Signup and view all the answers

How do the isoclines relate to the competitive abilities of the two species in the Lotka-Volterra model?

The species with the isocline that is further from the origin is the better competitor Signup and view all the answers

What is the criterion for coexistence between two competing species in the Lotka-Volterra model?

The product of the competition coefficients (a12 * a21) must be less than 1 Signup and view all the answers

How do changes in the competition coefficients (a) affect the competitive outcome in the Lotka-Volterra model?

Decreasing the competition coefficients can lead to either coexistence or exclusion, depending on the carrying capacities (K) Signup and view all the answers

Which biotic influence is not directly accounted for in the basic Lotka-Volterra competition model?

Mutualism Signup and view all the answers

Predictions and Competitive Outcomes Model

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