Which One of the Following Observations Was Not an Outcome

question 67

Multiple Choice

Which one of the following observations was not an outcome of studies by David Tilman and coworkers at Cedar Creek,Minnesota on ecosystem stability?

• A)Plots with more species showed less year-to-year variation in biomass.
• B)Species rich plots were less affected by drought than species poor plots.
• C)More diverse plots were less susceptible to invasion by new species.
• D)Nitrogen uptake and total biomass produced were negatively correlated to species richness.
• E)Overyielding was observed in more recent work at Cedar Creek.

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Definitions:

Ancient Earth

Refers to the period in Earth's history that spans from the formation of the planet approximately 4.5 billion years ago until the dawn of recorded history.

Short-lived Isotopes

Radioactive isotopes that decay rapidly, often used in medical imaging and studies of geological and planetary processes.

Long-lived Isotopes

Isotopes that have a long half-life, persisting in the environment for extended periods, often used in dating or tracing studies.

Emergence of Land Plants

The period in Earth's history when plants first developed and colonized land, around 500 million years ago during the Ordovician period.