Water column distribution of phospholipid-derived fatty acids of marine microorganisms in the Humboldt Current system off northern Chile

被引：13

作者：

Espinosa, Luisa F. ^{[1
]}

Pantoja, Silvio ^{[2
]}

Pinto, Luis A. ^{[2
]}

Rullkoetter, Juergen ^{[3
]}

机构：

[1] Univ Concepcion, Dept Oceanog, Programa Postgrad Oceanog, Concepcion, Chile

[2] Univ Concepcion, Ctr Invest Oceanog Pacifico Oriental FONDAP COPAS, Concepcion, Chile

[3] Carl von Ossietzky Univ Oldenburg, Inst Chem & Biol Marine Environm ICBM, D-26111 Oldenburg, Germany

来源：

DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY | 2009年 / 56卷 / 16期

关键词：

Chile; Humboldt Current system; Oxygen minimum zone; Fatty acids; Biomarkers; Marine microorganisms; OXYGEN MINIMUM ZONE; SULFATE-REDUCING BACTERIA; PARTICULATE ORGANIC-MATTER; LIPID BIOMARKERS; VERTICAL-DISTRIBUTION; COMMUNITY STRUCTURE; SARGASSO SEA; EL-NINO; CARBON; BIOMASS;

D O I：

10.1016/j.dsr2.2008.09.008

中图分类号：

P7 [海洋学];

学科分类号：

0707 ;

摘要：

Suspended particulate matter samples from the oxygenated surface zone, the oxygen minimum zone, and the oxygenated deeper zone were collected from the upwelling area off Antofagasta in northern Chile during austral autumn (April 2001) to study the composition of microbial phospholipid-derived fatty acid methyl esters, using capillary gas chromatography-mass spectrometry. Whereas phytoplanktonic carbon dominated living organic matter near the coast, bacterial carbon was most abundant offshore. The biomarker distribution showed some differences between the depth levels sampled, such as the highest microbial abundance in the epipelagic zone represented by phytoplankton, especially diatoms, and a homogeneous distribution of bacterial biomarkers, with no indication of vertical segregation of functional groups as previously thought. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1039 / 1048

页数：10

共 68 条

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