Recent sediment accumulation in a mangrove forest and its relevance to local sea-level rise (Ilha Grande, Brazil)

被引：39

作者：

Sanders, Christian J. ^{[1
]}

Smoak, Joseph M. ^{[2
]}

Naidu, A. Sathy ^{[3
]}

Patchineelamt, Sambasiva R. ^{[1
]}

机构：

[1] Univ Fed Fluminense, Dept Geoquim, BR-24020 Niteroi, RJ, Brazil

[2] Univ S Florida, St Petersburg, FL 33701 USA

[3] Univ Alaska, Inst Marine Sci, Fairbanks, AK 99775 USA

来源：

JOURNAL OF COASTAL RESEARCH | 2008年 / 24卷 / 02期

关键词：

Pb-210; geochronology; OC; TN; delta C-13((OC)); delta N-15;

D O I：

10.2112/07-0872.1

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

An accumulation rate in a well-developed mangrove forest has been associated with relative sea-level rise on an island off the coast of Rio de Janeiro State. This rate was calculated by Pb-210 dating models from a single sediment core. Results indicate an accumulation rate of approximately 1.7 mm/y for the past approximately 100 years. This rate is almost identical to the ongoing eustatic mean rise in global sea level, indicating a tectonically stable mangrove habitat. Organic C (OC), total N, delta C-13((OC)), and delta N-15 values from selected core intervals suggest a constant source of accumulating vegetal debris, dominated by C3-type vegetation with insignificant input of marine-derived organic matter, and a stable subaerial mangal habitat.

引用

页码：533 / 536

页数：4

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