Unformatted text preview: petitive exclusion.
Sousa 1979a Coexistence
The intermediate disturbance hypothesis (IDH): Species
richness Frequency of disturbance • Only tolerant species persist at high frequency; only competitive species persist at low frequency. Coexistence • Spatial heterogeneity can promote diversity by limiting niche overlap. • Temporal heterogeneity can promote diversity by interrupting competitive exclusion. Feb21
• Coexistence • Functional signiﬁcance of biodiversity • Interaction webs
• Indirect interactions Functional signiﬁcance of biodiversity Biodiversity
• Species richness
• Species evenness
• Shannon-Weiner index Ecosystem function
• Carbon storage
• Nutrient cycling Functional signiﬁcance of biodiversity
•pro Production-per-area increases with species richness.
reas- biomass chave a
y eft hy- Species richness FIG. 2. Theoretical example...
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