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Chapter # 13 – Interspecific Competition (pg. 258 – 280)

Chapter # 13 – Interspecific Competition (pg. 258 – 280). Chapter # 13 – Interspecific Competition (pg. 258 – 280). 13.1 – Interspecific Competition Involves Two or More Species. Six different types of interactions:. Consumption (of a shared resource)

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Chapter # 13 – Interspecific Competition (pg. 258 – 280)

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  1. Chapter #13 – Interspecific Competition (pg. 258 – 280)

  2. Chapter #13 – Interspecific Competition (pg. 258 – 280) 13.1 – Interspecific Competition Involves Two or More Species. Six different types of interactions: • Consumption (of a shared resource) • Preemption (sessile – occupation precludes establishment) • Over-growth (plants – when one overgrows another) • Chemical Interaction (released chemicals inhibit or kill) • Territoriality (behavioral exclusion) • Encounter (Non-territorial meetings w/negative effects)

  3. dN Dt (K – N) = rN K Chapter #13 – Interspecific Competition (pg. 258 – 280) 13.2 – There Are Four Possible Outcomes of Interspecific Competition. Logistic Growth Equation for 1 species:

  4. (K – N) (K – N) rN = rN K K Chapter #13 – Interspecific Competition (pg. 258 – 280) 13.2 – There Are Four Possible Outcomes of Interspecific Competition. Logistic Growth Equation for 2 species: Species 1 Species 2

  5. (K – N) (K – N) rN = rN K K Chapter #13 – Interspecific Competition (pg. 258 – 280) 13.2 – There Are Four Possible Outcomes of Interspecific Competition. Logistic Growth Equation for 2 species: Species 1 Species 2 β – competition coefficient of sp. #1 on sp. #2. α – competition coefficient of sp. #2 on sp. #1.

  6. dN1 dt (K1 – N1 – αN2) = r1N1 K1 Chapter #13 – Interspecific Competition (pg. 258 – 280) 13.2 – There Are Four Possible Outcomes of Interspecific Competition. Logistic Growth Equation for 2 species: Species 1 α – competition coefficient of sp. #2 on sp. #1.

  7. Chapter #13 – Interspecific Competition (pg. 258 – 280) 13.2 – There Are Four Possible Outcomes of Interspecific Competition. Zero Growth Isoclines

  8. Chapter #13 – Interspecific Competition (pg. 258 – 280) 13.2 – There Are Four Possible Outcomes of Interspecific Competition. Lotka-Volterra Model for Competition Vittora Volterra Alfred Lotka

  9. Chapter #13 – Interspecific Competition (pg. 258 – 280) 13.2 – There Are Four Possible Outcomes of Interspecific Competition. Lotka-Volterra Model for Competition

  10. Chapter #13 – Interspecific Competition (pg. 258 – 280) 13.3 – Laboratory Experiments Support the Lotka-Volterra Equations. G. F. Gause

  11. Chapter #13 – Interspecific Competition (pg. 258 – 280) 13.2 – There Are Four Possible Outcomes of Interspecific Competition. David Tilman

  12. Chapter #13 – Interspecific Competition (pg. 258 – 280) 13.2 – There Are Four Possible Outcomes of Interspecific Competition. 13.4 – Studies Support the Competitive Exclusion Principle. The Competitive Exclusion Principle: “Complete Competitors cannot Coexist” 2 species Non-interbreeding populations Live in the sample and time Possess exactly the same ecological requirements

  13. Chapter #13 – Interspecific Competition (pg. 258 – 280) 13.5 – Competition is Influenced by Nonresource Factors.

  14. Chapter #13 – Interspecific Competition (pg. 258 – 280) 13.6 – Temporal Variations in the Environment Influences Competitive Interactions.

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