Pre‐mission invasion of Erodium cicutarium in California

  title={Pre‐mission invasion of Erodium cicutarium in California},
  author={Scott A. Mensing and Roger A. Byrne},
  journal={Journal of Biogeography},
Abstract. The California grassland is dominated by alien plant species. It is generally assumed that the invasion of aliens began with the initial introduction of livestock by Spanish missionaries in 1769. In this paper we present pollen evidence which indicates that Erodium cicutarium, a Mediterranean annual, was well established in the Santa Barbara region several years before the founding of the first California mission at San Diego in 1769. Historical evidence shows that it took the Spanish… 

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The distribution of 834 of the more than 1000 exotic plant taxa that have become established in California, USA is examined, finding that the exotic flora is richest in low-lying coastal sites that harbor large numbers of imperiled species, while native diversity is highest in areas with high mean elevation.

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High water-use efficiency and growth contribute to success of non-native Erodium cicutarium in a Sonoran Desert winter annual community

Testing hypotheses for its success found no evidence for a release from natural enemies, and E. cicutarium was able to achieve higher growth rates while controlling leaf-level water loss, allowing it to out-compete natives.

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Seed and establishment limitation contribute to long-term native forb declines in California grasslands.

Exotic competition is likely only one factor contributing to local declines of native species in invaded ecosystems, with a combination of propagule limitation, site quality, and land use history also playing important and interactive roles in native plant recruitment.

The history of oak woodlands in California, part II: the native American and historic period

This paper is the second in a two-part review of the history of California oak woodlands. Part I reviewed the paleoecologic record, and here the Native American and Historic periods are documented.




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