期刊
MARINE POLLUTION BULLETIN
卷 60, 期 2, 页码 272-282出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2009.09.008
关键词
Stable carbon and nitrogen isotopes; Total volatile solids; Redox potential; Sediments grain size; Organic enrichment; Abra alba
资金
- Portuguese FCT (Fundacao para a Ciencia e Tecnologia) [SFRH/BD/18272/2004]
- CESAM
- SANEST
- Fundação para a Ciência e a Tecnologia [SFRH/BD/18272/2004] Funding Source: FCT
Sediment descriptors (grain size, total volatile solids, redox potential) and stable carbon and nitrogen isotopes were used to trace the origin of organic matter in a coastal area under multiple organic enrichment sources (urban outfall and a major estuary). The sediments fines content and total volatile solids were similar to outfall pre-operation period (1994), but the incorporation of terrestrial organic matter within the sediments located closer to the outfall was diagnosed by depleted C-13 values (-24.2 +/- 0.38 parts per thousand) and N-15 values (2.4 +/- 0.93 parts per thousand). Data also indicated depleted nitrogen signature at larger distances from the outfall than the carbon signature, due to confounding sediment grain size properties. Analysis in the bivalve Abra alba gave the same results for both isotopes and thus allowed a coherent interpretation of the spatial extent of the organic enrichment, highlighting the importance of bringing a biological element into the environmental assessment. (C) 2009 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据