Environmental Management

, Volume 12, Issue 1, pp 109–118

Soils and vegetation of Santa Barbara Island, Channel Islands National Park, California, USA

  • William L. Halvorson
  • Dennis B. Fenn
  • William R. Allardice
Research

DOI: 10.1007/BF01867382

Cite this article as:
Halvorson, W.L., Fenn, D.B. & Allardice, W.R. Environmental Management (1988) 12: 109. doi:10.1007/BF01867382

Abstract

The multifaceted development of an erosion surface on Santa Barbara Island, Channel Islands National Park, California, has led to this study of the relationship between soils and vegetation. A dry Mediterranean climate and past attempts at farming and introductions of alien species have led to vegetative degradation accompanied by both gully and surface erosion. Soil and vegetation analyses show this erosion to be in a location of transition. The soils are Typic Chromoxererts (Vertisol Order) with high clay, salinity, and sodium contents. The vegetation is ecotonal in nature, grading from a principally alien annual grassland withAvena fatua andAtriplex semibaccata to a shrub community dominated by the nativeSuaeda californica. Management toward revegetation and stabilization of this island ecosystem will be difficult with high clay, saline-sodic soils and disturbed vegetation.

Key words

Soil erosionGully erosionVegetationSanta Barbara IslandDevastation area

Copyright information

© Springer-Verlag New York Inc. 1988

Authors and Affiliations

  • William L. Halvorson
    • 1
  • Dennis B. Fenn
    • 2
  • William R. Allardice
    • 3
  1. 1.Channel Islands National ParkVenturaUSA
  2. 2.Cooperative Park Studies Unit Department of Recreation and ParksTexas A&M UniversityCollege StationUSA
  3. 3.Department of Soils, Water and EngineeringUniversity of California, DavisDavisUSA