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Effects of fire and fire suppression on mortality and mode of reproduction of California black oak (Quercus kelloggii Newb.)

Kauffman, Martin
Numerous studies, historical accounts and archaeological evidence suggest that the historical density and abundance of black oak (Quercus kelloggii Newb.) in mixed conifer forests was much greater than today. Reasons for the decline of this species…
Type: Document
Year: 1987

Late-Pleistocene environments of North Pacific North America

Heusser
[from the text] The science of palynology has come a long way since the presentation of the first paper on modern pollen analysis by Lennart von Post at Oslo in 1916. Like many sciences it was initiated as a rather narrow discipline and consisted…
Type: Document
Year: 1960