Browsing ELibrary by Author "Wakeham S.G."

Now showing items 1-8 of 8

ARCHAEA MEDIATE ANAEROBIC OXIDATION OF METHANE IN DEEP EUXINIC WATERS OF THE BLACK SEA

Wakeham S.G.; Lewis C.M.; Hopmans E.C.; Schouten S.; Sinninghe Damsté J.S. (2003)

We evaluate anaerobic oxidation of methane (AOM) in the Black Sea water column by determining distributions of archaea-specific glyceryl dialkyl glyceryl tetraethers (GDGTs) and 13C isotopic compositions of their constituent ...
ARCHAEAL LIPIDS AND ANAEROBIC OXIDATION OF METHANE IN EUXINIC WATER COLUMNS: A COMPARATIVE STUDY OF THE BLACK SEA AND CARIACO BASIN

Wakeham S.G.; Hopmans E.C.; Schouten S.; Sinninghe Damsté J.S. (2004)

The Black Sea and the Cariaco Basin are both large, euxinic marine basins in which methane concentrations are high and where anaerobic oxidation of methane (AOM) is an important part of the carbon cycle. AOM can be recognized ...
C32-C36 POLYMETHYL ALKENES IN BLACK SEA SEDIMENTS

Damste J.S.S.; Erkes A.M.W.E.P.; Rijpstra W.I.C.; De Leeuw J.W.; Wakeham S.G. (1995)

A series of novel C32-C36 polymethylhentriacontenes has been identified in near-surface sediments of the Black Sea. Hydrogenation of these components indicated that they possess the 5,8,14,24,27-pentamethyl-, 8,14,24,27- ...
EFFECT OF PHYTOPLANKTON CELL GEOMETRY ON CARBON ISOTOPIC FRACTIONATION - A PHYTOCONCENTRIC VIEW

Popp B.N.; Laws E.A.; Bidigare R.R.; Dore J.E.; Hanson K.L.; Wakeham S.G. (1998)

The carbon isotopic compositions of the marine diatom Porosira glacialis and the marine cyanobacterium Synechococcus sp. were measured over a series of growth rates (μ) in a continuous culture system in which the concentration ...
EFFECTS OF OXYGEN AND REDOX OSCILLATION ON DEGRADATION OF CELL-ASSOCIATED LIPIDS IN SURFICIAL MARINE SEDIMENTS

Sun M.Y.I.; Aller R.C.; Lee C.; Wakeham S.G. (2002)

Degradation patterns of sedimentary algal lipids were tracked with time under variable redox treatments designed to mimic conditions in organic-rich, bioturbated deposits. Uniformly 13C-labeled algae were mixed with Long ...
EVIDENCE FOR ANAEROBIC METHANE OXIDATION BY ARCHAEA IN EUXINIC WATERS OF THE BLACK SEA

Schouten S.; Wakeham S.G.; Damste J.S.S. (2001)

13C-depleted archaeal-derived ether-bound cyclic biphytanes occur in particulate organic matter from the euxinic waters of the Black Sea. These strongly 13C-depleted biomarkers (up to -58%%) provide evidence that archaea ...
ORGANIC MATTER DIAGENESIS IN SHALLOW WATER CARBONATE SEDIMENTS

Ingalls A.E.; Aller R.C.; Lee C.; Wakeham S.G. (2004)

Muddy carbonate deposits near the Dry Tortugas, Florida, are characterized by high organic carbon remineralization rates. However, approximately half of the total sedimentary organic matter potentially supporting ...
ORGANIC SULFUR COMPOUNDS FORMED DURING EARLY DIAGENESIS IN BLACK SEA SEDIMENTS

Wakeham S.G.; Sinninghe Damste J.S.; Kohnen M.E.L.; De Leeuw J.W. (1995)

Sediments from Units I and II of the Black Sea were analyzed to assess the early diagenetic formation of organic sulfur compounds (OSC). A series of isomeric C28-2,4-dialkylthiophenes was found at low concentrations in ...

Browsing ELibrary by Author "Wakeham S.G."

Browsing ELibrary by Author "Wakeham S.G."

Search DSpace

Browse

All of DSpace

This Collection

My Account