Diatoms as indicators of sea-level change

Palmer, Andrew J.; Abbott, W.H.

doi:10.1007/978-94-009-4215-8_16

Cited by 67 publications

(27 citation statements)

References 21 publications

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“…The technical procedure for diatom sample preparation followed those described by Palmer and Abbott (1986). A minimum count of 300 diatom valves was reached for all samples.…”

Section: Methodsmentioning

confidence: 99%

Sedimentary evidence of Late Holocene human activity in the Pearl River delta, China

Zong

Huang

et al. 2010

Earth Surf Processes Landf

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This study examines the sedimentary evidence of human activities during the last 4000 years in the Pearl River deltaic area. The analyses are focused on indentifying agricultural signatures present in the sedimentary record and establishing the timing of a change from a simple, rice-based agriculture to a more advanced, diverse agriculture. The examination is based on modern sediment and plant samples and a sediment core collected from the deltaic area. The analyses include particle size and diatom analysis to determine the environmental conditions that were associated with the period of human activities. Organic carbon isotope ratios and major metal elements reveal an expansion in commercial crop production and metal smelting in the Pearl River delta area about 2000 years ago. The input of organic matter from introduced sugarcane, a C4 plant, elevates the bulk organic carbon isotope values in the estuarine sediments above that represented by other common agricultural crops in the study area, including rice, banana and lotus, which are all C3 plants. The increase in bulk organic isotopic value coincides with the rise in the concentration of copper, iron and lead in the sedimentary sequence, suggesting a wider use of metal tools. These results indicate that advanced agriculture started about 2000 years ago as an expansion in human population took place in the area. This record also provides sedimentary evidence that help ascertain the timing and type of human activities that are linked to subsequent land reclamation on the deltaic plain, resulting in rapid shoreline advancement in the last 2000 years.

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“…The technical procedure for diatom sample preparation followed those described by Palmer and Abbott (1986). A minimum count of 300 diatom valves was reached for all samples.…”

Section: Methodsmentioning

confidence: 99%

Sedimentary evidence of Late Holocene human activity in the Pearl River delta, China

Zong

Huang

et al. 2010

Earth Surf Processes Landf

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“…The diatom flora indicates a major shift in habitat from a marine influenced environment to that of a brackish/freshwater ecosystem. It has long been recognised that many diatom taxa thrive in water of a particular salinity and some are indifferent to this environmental factor (Palmer and Abbott, 1986). In coastal B lakes, fossil diatom assemblages reflect the prevailing salinity of their habitat.…”

Section: Discussionmentioning

confidence: 99%

“…In coastal B lakes, fossil diatom assemblages reflect the prevailing salinity of their habitat. For sea-level studies, the most useful historical reconstructions are ones in which a substantial change is found in the proportions of fresh, brackish and marine diatoms (Palmer and Abbott, 1986). …”

Section: Discussionmentioning

confidence: 99%

“…Figure 2), periodic overturn of the lake could result in the mixing of the underlying saline water with the freshwater hypolimnion, could be responsible for the dominance of Diatoma spp. It is however common for post-isolation lakes to contain a brackish diatom assemblage, especially as coastal zones are diverse habitats for diatoms and the change from a saline/brackish environment is rarely sudden and clear (Palmer and Abbott, 1986;Corner and Haugane, 1993;Seppä et al, 2000).…”

Section: Cal Yrs Bp -Presentmentioning

confidence: 99%

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Diatom and stable isotope records of late-Holocene lake ontogeny at Indrepollen, Lofoten, NW Norway: a response to glacio-isostasy and Neoglacial cooling

et al. 2009

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Borg Indrepollen is a coastal lake on the island of Vestvågøy, Lofoten, NW Norway. A sedimentary sequence spanning the last 4500 cal. yr BP was analysed for diatom, C/N and stable isotopes (δ13C and δ15 N). The record provides clear evidence of glacio-isostatic rebound in the Lofoten region. Five distinct lithostratigraphic-geochemical zones (I—V) and four major diatom zones (A—D) were identified. The early record (I—III, A—Biii; 4500—550 cal. yr BP) contains coarse sedimentary material and diatoms indicative of more marine conditions. The correlation between the isotopic data (high δ13C and low C/N) and trends in the biological data (marine/brackish flora) suggest the marine influence on the Indrepollen basin is a controlling factor of the source of organic material. The latter part of the record (IV, C; 550 cal. yr 550—226) indicates a transitional phase from marine-dominated diatom to brackish taxa and is coincident with a section of microlaminations in the core. The youngest zone (V, D; 226 cal. yr BP—present) is indicative of an isolated basin, with the deposition of fine sediments; freshwater diatom taxa dominate the biological record and δ13C are indicative of freshwater conditions. C/N suggests a shift to a terrestrial source of organic matter. The proxies show a transition from full marine conditions, when Indrepollen was a submerged fjord, to more freshwater, lacustrine conditions in the last 200 years. The record of land uplift from Borg Indrepollen mirrors changes in sedimentary records from across Northern Norway and relative sea-level curves for the region.

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“…Distinct assemblages of species are found in freshwater, brackish and marine environments (Vos and de Wolf, 1993). Preparation of diatom samples follows standard procedures (Palmer and Abbott, 1986). Species identification follows Hartley et al (1996), Hemphill--Haley (1993), Reimer (1966, 1975) and van der Werff andHuls (1958--1974), with the results plotted in C2 (Juggins, 2003) and species classified into five categories of salt tolerance (Hemphill--Haley, 1993).…”

Section: Biostratigraphymentioning

confidence: 99%

Constraints on regional drivers of relative sea-level change around Cordova, Alaska

Garrett

Barlow

Cool

et al. 2015

Quaternary Science Reviews

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(2015) 'Constraints on regional drivers of relative sea-level change around Cordova, Alaska.', Quaternary science reviews., 113 . pp. 48-59. Further information on publisher's website:http://dx.doi.org/10. 1016/j.quascirev.2014.12.002 Publisher's copyright statement: NOTICE: this is the author's version of a work that was accepted for publication in Quaternary Science Reviews. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be re ected in this document. Changes may have been made to this work since it was submitted for publication. A de nitive version was subsequently published in Quaternary Science Reviews, 113, 1 April 2015, 10.1016/j.quascirev.2014 Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

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Diatoms as indicators of sea-level change

Cited by 67 publications

References 21 publications

Sedimentary evidence of Late Holocene human activity in the Pearl River delta, China

Sedimentary evidence of Late Holocene human activity in the Pearl River delta, China

Diatom and stable isotope records of late-Holocene lake ontogeny at Indrepollen, Lofoten, NW Norway: a response to glacio-isostasy and Neoglacial cooling

Constraints on regional drivers of relative sea-level change around Cordova, Alaska

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