Houghton's method of
reconstructing Land - Use Based Net Flux of Carbon appears arbitrary and susceptible to bias; i.e. «Rates of land - use
change, including clearing for agriculture and harvest of wood, were
reconstructed from statistical and historic documents for 9 world regions and used, along with the per ha [hectare]
changes in vegetation and soil that result from land management, to calculate the annual flux of carbon between land and atmosphere.»
Using the pollen composition from 74 single probes, Bernhardt and his colleagues were able to
reconstruct changes in the lagoon's
vegetation, which ultimately reflected fluctuations
in water feed -
in from the Nile.