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Predictions and Competitive Outcomes Model

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Both K and a

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

Dependent on K and a

One species wins

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

<p>Influences competitive outcomes along with K</p> Signup and view all the answers

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

<p>(r) - growth rate</p> Signup and view all the answers

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

<p>Zero</p> Signup and view all the answers

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

<p>Blue species wins and goes to Kblue</p> 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?

<p>Unstable equilibrium</p> Signup and view all the answers

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

<p>Species population dynamics</p> 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?

<p>Indicates an equal growth for both species</p> 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?

<p>Both are in stable equilibrium</p> Signup and view all the answers

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

<p>The carrying capacities and competition coefficients of the two species</p> Signup and view all the answers

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

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

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

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

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

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

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

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

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

<p>Mutualism</p> Signup and view all the answers

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