Intraspecific Variation, Adaptation, and Evolution

Ryan E. O’Dell and Nishanta Rajakaruna

in Serpentine

Published by University of California Press

Published in print February 2011 | ISBN: 9780520268357
Published online March 2012 | e-ISBN: 9780520948457 | DOI:
Intraspecific Variation, Adaptation, and Evolution

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This chapter focuses on how distinct soil types have resulted in ecotypic differentiation and adaptation. It begins with evidence for ecotypic differentiation in chemically stressful edaphic environments, including saline soils and metalliferous mine tailings. The chapter then proceeds to highlight ecotypic differentiation in response to serpentine soils. The discussion includes a summary of the adverse physical and chemical characteristics of serpentine soils, key plant morphological and physiological mechanisms involved in serpentine soil tolerance, how ecotypic differentiation leads to the origin of new species, and an extensive review of plant intraspecific variation found within serpentine ecosystems worldwide. The chapter concludes by summarizing major trends in plant adaptation to serpentine soils as demonstrated by examples of intraspecific variation.

Keywords: soil types; ecotypic differentiation; edaphic environments; saline soils; mine tailings; serpentine soils; intraspecific variation; serpentine ecosystems; plant adaptation

Chapter.  15902 words.  Illustrated.

Subjects: Plant Sciences and Forestry

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