A Comparison of 1978 and 2006 Peak Pollen Seasons and Sampling Methods in Missoula, Montana

摘要: Abstract A study was conducted in Missoula, Montana, to compare local pollen counts from 1978 with those measured nearly 30 years later 2006 using two different measurement techniques (Durham gravimetric and Burkard volumetric samplers). Trends peak times during the spring, summer autumn, respectively, were compared between by Pearson's correlation frequency of occurrence plant genus. Meteorological conditions also examined each periods. In comparing years, there a statistically significant linear association for months April through August, similar levels types any given month. The five predominant (based on counts) identified Pinus, Poaceae, Populus, Alnus, Betula Acer Artemisia 1978. summary most genera displayed pollination timing sugg...