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A Comparison Of 1978 And 2006 Peak Pollen Seasons And Sampling Methods In Missoula, Montana, Kelly L. Crispen, Donald N. Gillespie, Emily C. Weiler, Curtis W. Noonan, Raymond F. Hamilton, Tony Ward

Public and Community Health Sciences Faculty Publications

A study was conducted in Missoula, Montana to compare local pollen counts from 1978 with those measured nearly 30 years later in 2006 using two different measurement techniques (Durham gravimetric sampler and a Burkard volumetric sampler). Trends in peak pollen times measured during the spring, summer and autumn, respectively, were compared between the two years by Pearson’s correlation and frequency of occurrence of plant genus. Meteorological conditions were also examined during each of the two study periods.

In comparing the two years, there was a statistically significant linear association between the different counts for the months of April through August, …