Inter-specific Competition Concepts

The lecture by Divina covers inter-specific competition, a key ecological concept where different species compete for limited resources. It builds on previous discussions of intra-specific competition and explores how inter-specific competition affects population dynamics, species evolution, and community structures. The lecture introduces the Lotka-Volterra model, which predicts outcomes of competition between species, and explains different types of competition such as exploitation and interference. The session concludes with a preview of the next topic, Gauss's principle of exclusion.

What is inter-specific competition primarily concerned with?

• Competition within a single species

• Competition between different species for limited resources

• The impact of climate change on species

• The role of predators in an ecosystem

Which of the following is an example of consumption competition?

• Barnacles occupying space

• Plants releasing toxins

• Animals competing for acorns

• Scavengers fighting over carcasses

What type of competition involves the release of toxins to inhibit other species?

• Encounter competition

• Preemptive competition

• Chemical competition

• Territorial competition

Who were the mathematicians that developed the model describing inter-specific competition?

• Einstein and Bohr

• Newton and Leibniz

• Darwin and Wallace

• Lotka and Volterra

What does the Lotka-Volterra model primarily describe?

• The competition between two species for the same resources

• The interaction between predators and prey

• The migration patterns of birds

• The growth of a single species

In the Lotka-Volterra model, what does a competition coefficient represent?

• The migration rate of a species

• The growth rate of a species

• The carrying capacity of an environment

• The per capita effect of one species on another

Which scenario describes a situation where one species always outcompetes another, leading to its extinction?

• Mutual coexistence

• Competitive exclusion

• Unstable equilibrium

• Stable equilibrium

What outcome occurs when both species inhibit their own growth more than the other's?

• One species goes extinct

• Both species coexist

• Both species grow indefinitely

• One species dominates the other

What is the term for when two species coexist despite competition?

• Mutualism

• Coexistence

• Competitive exclusion

• Parasitism

Which of the following is NOT a possible outcome of inter-specific competition according to the Lotka-Volterra model?

• One species outcompetes the other

• Both species coexist

• Both species go extinct

• One species becomes a predator