Abundance and distribution of fatty acids in hydrothermal vent sediments of the western Pacific Ocean

Toshiro Yamanaka, Susumu Sakata

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Sediments obtained from three active seafloor hydrothermal areas in the western Pacific Ocean were measured for the abundances and distributions of total fatty acids (TFAs). Approximately 50 fatty acids were identified, with the chain-length ranging from C9 to C29. The total concentrations of TFAs (∑TFA) show a wide range from 13.2 to 184 μg/g dry sediment. The values of ∑TFA, over 100 μg/g dry sediment, are significantly higher than those reported for non-hydrothermal seafloor sediments. Furthermore, the observed compositions of TFAs are rich in bacterial biomarkers especially monounsaturated fatty acids, which is common to sediments and symbiotic animal tissues from other sites associated with hydrothermal activities. High ratios of ∑TFA to total organic carbon content (TOC) relative to the non-hydrothermal seafloor sediment may also reflect a large contribution of organic matter produced at the vents. Due to the limited sample availability from these environments, the TFA compositions were not enough to evaluate relatedness between the vent sediment and vent animal community, while the wide diversity of TFAs suggests a large variation in source organisms in these hydrothermal environments. This study confirms the high contribution of bacteria and other vent organisms to organic matter in the sediments.

Original languageEnglish
Pages (from-to)573-582
Number of pages10
JournalOrganic Geochemistry
Volume35
Issue number5
DOIs
Publication statusPublished - May 2004
Externally publishedYes

Fingerprint

Vents
hydrothermal vent
Sediments
Fatty Acids
fatty acid
ocean
sediment
seafloor
Biological materials
Animals
Monounsaturated Fatty Acids
distribution
organic matter
animal community
Biomarkers
Organic carbon
Chemical analysis
Chain length
hydrothermal activity
relatedness

ASJC Scopus subject areas

  • Geochemistry and Petrology

Cite this

Abundance and distribution of fatty acids in hydrothermal vent sediments of the western Pacific Ocean. / Yamanaka, Toshiro; Sakata, Susumu.

In: Organic Geochemistry, Vol. 35, No. 5, 05.2004, p. 573-582.

Research output: Contribution to journalArticle

Yamanaka, Toshiro ; Sakata, Susumu. / Abundance and distribution of fatty acids in hydrothermal vent sediments of the western Pacific Ocean. In: Organic Geochemistry. 2004 ; Vol. 35, No. 5. pp. 573-582.
@article{f43a11eb82fd43bbaa7e785af9a9ac8b,
title = "Abundance and distribution of fatty acids in hydrothermal vent sediments of the western Pacific Ocean",
abstract = "Sediments obtained from three active seafloor hydrothermal areas in the western Pacific Ocean were measured for the abundances and distributions of total fatty acids (TFAs). Approximately 50 fatty acids were identified, with the chain-length ranging from C9 to C29. The total concentrations of TFAs (∑TFA) show a wide range from 13.2 to 184 μg/g dry sediment. The values of ∑TFA, over 100 μg/g dry sediment, are significantly higher than those reported for non-hydrothermal seafloor sediments. Furthermore, the observed compositions of TFAs are rich in bacterial biomarkers especially monounsaturated fatty acids, which is common to sediments and symbiotic animal tissues from other sites associated with hydrothermal activities. High ratios of ∑TFA to total organic carbon content (TOC) relative to the non-hydrothermal seafloor sediment may also reflect a large contribution of organic matter produced at the vents. Due to the limited sample availability from these environments, the TFA compositions were not enough to evaluate relatedness between the vent sediment and vent animal community, while the wide diversity of TFAs suggests a large variation in source organisms in these hydrothermal environments. This study confirms the high contribution of bacteria and other vent organisms to organic matter in the sediments.",
author = "Toshiro Yamanaka and Susumu Sakata",
year = "2004",
month = "5",
doi = "10.1016/j.orggeochem.2004.01.002",
language = "English",
volume = "35",
pages = "573--582",
journal = "Organic Geochemistry",
issn = "0146-6380",
publisher = "Elsevier Limited",
number = "5",

}

TY - JOUR

T1 - Abundance and distribution of fatty acids in hydrothermal vent sediments of the western Pacific Ocean

AU - Yamanaka, Toshiro

AU - Sakata, Susumu

PY - 2004/5

Y1 - 2004/5

N2 - Sediments obtained from three active seafloor hydrothermal areas in the western Pacific Ocean were measured for the abundances and distributions of total fatty acids (TFAs). Approximately 50 fatty acids were identified, with the chain-length ranging from C9 to C29. The total concentrations of TFAs (∑TFA) show a wide range from 13.2 to 184 μg/g dry sediment. The values of ∑TFA, over 100 μg/g dry sediment, are significantly higher than those reported for non-hydrothermal seafloor sediments. Furthermore, the observed compositions of TFAs are rich in bacterial biomarkers especially monounsaturated fatty acids, which is common to sediments and symbiotic animal tissues from other sites associated with hydrothermal activities. High ratios of ∑TFA to total organic carbon content (TOC) relative to the non-hydrothermal seafloor sediment may also reflect a large contribution of organic matter produced at the vents. Due to the limited sample availability from these environments, the TFA compositions were not enough to evaluate relatedness between the vent sediment and vent animal community, while the wide diversity of TFAs suggests a large variation in source organisms in these hydrothermal environments. This study confirms the high contribution of bacteria and other vent organisms to organic matter in the sediments.

AB - Sediments obtained from three active seafloor hydrothermal areas in the western Pacific Ocean were measured for the abundances and distributions of total fatty acids (TFAs). Approximately 50 fatty acids were identified, with the chain-length ranging from C9 to C29. The total concentrations of TFAs (∑TFA) show a wide range from 13.2 to 184 μg/g dry sediment. The values of ∑TFA, over 100 μg/g dry sediment, are significantly higher than those reported for non-hydrothermal seafloor sediments. Furthermore, the observed compositions of TFAs are rich in bacterial biomarkers especially monounsaturated fatty acids, which is common to sediments and symbiotic animal tissues from other sites associated with hydrothermal activities. High ratios of ∑TFA to total organic carbon content (TOC) relative to the non-hydrothermal seafloor sediment may also reflect a large contribution of organic matter produced at the vents. Due to the limited sample availability from these environments, the TFA compositions were not enough to evaluate relatedness between the vent sediment and vent animal community, while the wide diversity of TFAs suggests a large variation in source organisms in these hydrothermal environments. This study confirms the high contribution of bacteria and other vent organisms to organic matter in the sediments.

UR - http://www.scopus.com/inward/record.url?scp=1842688712&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1842688712&partnerID=8YFLogxK

U2 - 10.1016/j.orggeochem.2004.01.002

DO - 10.1016/j.orggeochem.2004.01.002

M3 - Article

AN - SCOPUS:1842688712

VL - 35

SP - 573

EP - 582

JO - Organic Geochemistry

JF - Organic Geochemistry

SN - 0146-6380

IS - 5

ER -