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date: 22 October 2019

absolute pollen frequency (APF) 

A Dictionary of Ecology

Michael Allaby

The reporting of *pollen data from sediments, expressed in terms of the absolute numbers of pollen grains (for each species, genus, or family) per unit of area of surface and, where deposition rates are known, per unit of time. In certain circumstances this approach gives clearer information than does the traditional way of expressing pollen data as ... ...

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