期刊
MARINE POLLUTION BULLETIN
卷 54, 期 9, 页码 1385-1394出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2007.05.022
关键词
stable isotopes; terrestrial organic matter; seawater POM; sediment; Danube River; Black Sea
The main aim of this study was to estimate the, influence of the seasonal variations of the Danube River particulate organic matter (POM) inputs on the Black Sea surface seawater POM and upper layer of sediments along the Romanian coast. Ratios of carbon (C-13/C-12) and nitrogen (N-15/N-14) stable isotopes allowed differentiating river and marine organic matter sources. Danube River POM presented significantly lower average values of delta C-13 (-27.52 +/- 0.88 parts per thousand ) and delta N-15 (4.88 +/- 1.45 parts per thousand) than seawater POM (delta C-13 = -24.70 +/- 2.37 parts per thousand and delta N-15 = 6.75 +/- 1.96 parts per thousand), whereas surface sediment presented average values similar to seawater POM (delta C-13 = -24.02 +/- 2.39 parts per thousand, and delta N-15 = 7.29 +/- 2.16 parts per thousand). Stable isotope values showed that the Danube River influence on marine ecosystems decreased from the North to the South of the Romanian coast. Strong seasonal variations of C and N isotopic signatures were observed in all compartments studied with generally higher values in spring when the river was flooding. (c) 2007 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