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Pattern and process in primary succession in high elevation habitats on Mount St. Helens
The mechanistic basis of primary succession remains poorly known. The facilitation model, thought to describe primary succession, stresses the environmental modifications caused by early colonists as important in promoting the establishment of species intolerant of unmodified site conditions. This model has rarely been tested ...
The effect of the introduction of cutthroat trout on the benthic community of Lake Lenore, Washington
In 1979, the Washington State Department of Game began stocking cutthroat trout (Salmo clarki henshawi) into Lake Lenore, a moderately alkaline lake that previously contained no resident populations of fish. In this dissertation, I examined effects of the introduction of cutthroat trout on populations of planktonic and benthic ...
History of climate and vegetation in the eastern Mediterranean and the Middle East from the Pleniglacial to the Mid-Holocene
Quaternary climates of the Middle East were investigated by reevaluating previous data and by analyzing pollen in radiocarbon-dated sediments. For comparison, assemblages of modern pollen were obtained from desert regions.Chenopodiaceae and Plantago pollen is high in surface samples from Kuwait and S. Iraq. In Jordan pollen ...