The sampling effect hypothesis is an explanation for why pro

The sampling effect hypothesis is an explanation for why productivity increases when plant species d… Show more The sampling effect hypothesis is an explanation for why productivity increases when plant species diversity increases. Which of these predictions follows from this hypothesis? There should be a strong positive relationship between the number of functional groups in an experimental plot and biomass. The more mutualists are present (e.g. beneficial fungi, nitrogen-fixing plants), the higher the biomass. Productivity should be highest in the tropics, where species diversity is highest. If a certain “big-producer” is present, then biomass in a plot is high. If the big producer is absent, biomass is low. • Show less

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