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Pre-mission Invasion of Erodium Cicutarium in California.
- Source :
- Journal of Biogeography; Jul98, Vol. 25 Issue 4, p757-762, 6p
- Publication Year :
- 1998
-
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 nearly a decade to develop a livestock base in California. Disturbance by livestock was therefore not a necessary prerequisite for invasion by alien plants. Historical and macrofossil evidence indicates that E. cicutarium invaded California from Baja California. [ABSTRACT FROM AUTHOR]
- Subjects :
- ERODIUM cicutarium
GRASSLANDS
BIOGEOGRAPHY
Subjects
Details
- Language :
- English
- ISSN :
- 03050270
- Volume :
- 25
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Journal of Biogeography
- Publication Type :
- Academic Journal
- Accession number :
- 8608207
- Full Text :
- https://doi.org/10.1046/j.1365-2699.1998.2540757.x