Holocene paleoecology of an estuary on Santa Rosa Island, California
Quaternary Research
By: K.L. Cole and Gaisheng Liu
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Abstract
The middle to late Holocene history and early Anglo-European settlement impacts on Santa Rosa Island, California, were studied through the analysis of sediments in a small estuarine marsh. A 5.4-m-long sediment core produced a stratigraphic and pollen record spanning the last 5200 yr. Three major zones are distinguishable in the core. The lowermost zone (5200 to 3250 yr B.P.) represents a time of arid climate with predominantly marine sediment input and high Chenopodiaceae and Ambrosia pollen values. The intermediate zone (3250 yr B.P. to 1800 A.D.) is characterized by greater fresh water input and high values for Asteraceae and Cyperaceae pollen and charcoal particles. The uppermost zone (1800 A.D. to present) documents the unprecedented erosion, sedimentation, and vegetation change that resulted from the introduction of large exotic herbivores and exotic plants to the island during Anglo-European settlement. The identification of pollen grains of Torrey Pine (Pinus torreyana) documents the persistence of this endemic species on the island throughout the middle to late Holocene.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Holocene paleoecology of an estuary on Santa Rosa Island, California |
| Series title | Quaternary Research |
| DOI | 10.1006/qres.1994.1037 |
| Volume | 41 |
| Issue | 3 |
| Year Published | 1994 |
| Language | English |
| Publisher | Elsevier |
| Publisher location | Amsterdam, Netherlands |
| Contributing office(s) | Forest and Rangeland Ecosystem Science Center |
| Description | p. 326-335 |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Quaternary Research |
| First page | 326 |
| Last page | 335 |
| Google Analytic Metrics | Metrics page |