Journal article
Changing elevation, accretion, and tidal marsh plant assemblages in a south San Francisco Bay tidal marsh
Estuaries, v 27(4), pp 684-698
Aug 2004
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Analyses of organic content, pollen, and the carbon-isotopic composition of a 3.5-m sediment core collected from a subsided tidal marsh located in South San Francisco Bay, California, have provided a 500-yr record of sediment accretion and vegetation change before, during, and after a rapid 1 m increase in sea level. Core chronology was established using (super 14) C dating of fossil plant material, the first appearance of pollen types produced by plants not native to California, and changes in lead concentrations coincident with anthropogenic contamination. Prior to the mid 19th century, rates of sediment accretion were between 1 and 4 mm yr (super -1) ; sediment accretion accelerated to an average of 22 mm yr (super -1) following the initiation of subsidence. Changes in tidal marsh vegetation also accompanied this depositional change. Vegetation shifted from a high to low marsh assemblage, as indicated by a larger percentage of grass pollen, rhizomes of Spartina foliosa, and a strong C (sub 4) signal. Between 1980 and 2001, Triangle Marsh again developed high marsh vegetation, as indicated by higher percentages of the Amaranthaceae pollen type, seed deposition, including Salicornia spp., and more negative carbon isotopic ratios.
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Details
- Title
- Changing elevation, accretion, and tidal marsh plant assemblages in a south San Francisco Bay tidal marsh
- Creators
- Elizabeth Burke Watson - University of California, Berkeley
- Publication Details
- Estuaries, v 27(4), pp 684-698
- Publisher
- Estuarine Research Federation
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Biodiversity, Earth, and Environmental Science (BEES)
- Web of Science ID
- WOS:000223528300010
- Scopus ID
- 2-s2.0-4344568753
- Other Identifier
- 991019298816004721
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Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Environmental Sciences
- Marine & Freshwater Biology