Premium
Determination of Absolute Pollen Frequency
Author(s) -
Davis Margaret B.
Publication year - 1966
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1933780
Subject(s) - pollen , absolute (philosophy) , sediment , benzene , volume (thermodynamics) , sample (material) , solvent , environmental science , chromatography , ecology , mineralogy , chemistry , geology , biology , thermodynamics , paleontology , organic chemistry , physics , philosophy , epistemology
Changes in technique have simplified and made more reliable a method for determining the absolute numbers of pollen grains in sediment samples. The prepared sample is suspended in its entirety in the volume of fluid from which measured portions are taken for counting; tertiary butyl alcohol, instead of benzene with dissolved silicone fluid, is used as the suspending fluid.