Lectures on species interactions and competition

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Experimental Evidence of Competition • Replacement series experiments (De Wit 1960) • Target-neighborhood experiments (Fonteyn and Mahall 1981) • Root vs. shoot competition experiments (McGraw 1985)
Replacement series experiments (De Wit 1960) • The ratio of seeds planted for two species, A and B, is compared to the ratio of some measure, such as biomass, of the resulting crop. • Input ratio = (seeds sown of A)/(seeds sown of B) • Output ratio = (biomass A)/(biomass B)
Page 1 and 2: This weeks schedule Mon, Wed: <stro
Page 3 and 4: Introduction • Individuals and po
Page 5 and 6: Pairwise interactions • Competiti
Page 7 and 8: Competition • Since plants requir
Page 9 and 10: Ways to study competition • Analy
Page 11 and 12: Gause s (1934) competitive exclusio
Page 13 and 14: Intraspecific (within species) comp
Page 15 and 16: Zero Net Growth Isocline diagrams (
Page 17: Situation where the isoclines cross
Page 21 and 22: Fisher et al. (2002) Experiments Ex
Page 23 and 24: Fischer et al. (2002) Results • U
Page 25 and 26: Replacement series (De Wit 1960) (a
Page 27 and 28: Competition experiments: Targetneig
Page 29 and 30: Competition experiments: Examinatio
Page 31 and 32: Competition for light and soil mois
Page 33 and 34: Nutrient flux gradients (Huston and
Page 35 and 36: Resource competition: Effect of com
Page 37 and 38: Tilman s resource-ratio model (1982
Page 39 and 40: Tilman s resource-ratio model (1982
Page 41 and 42: Implications of Resource-ratio hypo
Page 43 and 44: Reconciling the theories of Grime a
Page 45 and 46: Amensalism Interaction which depres
Page 47 and 48: Allelopathy: Salvia leucophylla-gra
Page 49 and 50: Other ways plants change their envi
Page 51 and 52: Summary • Major types of competit

Lectures on species interactions and competition

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