Edaphic Restriction of Cupressus Forbesii (Tecate Cypress) in Southern California, U.S.A.--A Hypothesis
The restriction of some terrestrial plant species to unusual or extreme substrates such as soils derived from ultramafic rocks has long fascinated ecologists (Proctor, Woodell, 1975). Sharply restricted plant distributions exemplify one of the most general ecological problems: What limits the local and regional abundance of species? There is reason to hope that deepening our knowledge of the causes of the dramatic distributions of rare plants will help us to understand the more subtle patterns of common species.
KeywordsCommon Species Granitic Soil Extreme Soil Terrestrial Plant Species Metal Tolerant Plant
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