GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Document type
Keywords
Publisher
Years
  • 11
    Electronic Resource
    Electronic Resource
    Dimethyl sulphide in a stratified coastal salt pond (1984)
    [s.l.] : Nature Publishing Group
    Nature 310 (1984), S. 770-772 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Salt Pond is a shallow (5.5-m deep) eutrophic marine basin on Cape Cod, Massachusetts16, that exhibits density stratification. While aerobic processes dominate the epilimnion, the anaerobic hypolimnion generally has high concentrations of H2S (up to 5 mM) generated from sulphate reduction in the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/310770a0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 12
    Electronic Resource
    Electronic Resource
    Enrichment in saturated compounds of Black Sea interfacial sediment (1991)
    [s.l.] : Nature Publishing Group
    Nature 351 (1991), S. 642-644 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The upper sediments in the Black Sea ('Unit 1') consist of alternating coccolith-rich carbonate/organic-rich varve couplets. Box cores from the 1988 Black Sea expedition showed the varved sequence to be overlain by 2-4 cm of unconsolidated sediment referred to as 'fluff'7. The fluff is of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/351642a0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 13
    Electronic Resource
    Electronic Resource
    A 6,000–year sedimentary molecular record of chemocline excursions in the Black Sea (1993)
    [s.l.] : Nature Publishing Group
    Nature 362 (1993), S. 827-829 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Pleistocene and Holocene sedimentary record of the Black Sea6'7 reveals that the basin changed from a freshwater lake to the present anoxic marine basin —9,000 years before present (BP), when the post-glacial sea-level rise reconnected the Black Sea with the Mediterranean. The base of a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/362827a0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 14
    Electronic Resource
    Electronic Resource
    Chemocline of the Black Sea (1993)
    [s.l.] : Nature Publishing Group
    Nature 366 (1993), S. 416-416 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SINNINGHE DAMSTE ETAL. REPLY- Our paper1 is about sulphur-bound bio-markers and their isotope compositions, a line of enquiry that we have been following for some time (see refs 6, 7). The Black Sea, with its high sulphide content and photosynthetic bacteria, was a logical site to continue this ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/366416a0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 15
    Electronic Resource
    Electronic Resource
    Organic matter fluxes from sediment traps in the equatorial Atlantic Ocean (1980)
    [s.l.] : Nature Publishing Group
    Nature 286 (1980), S. 798-800 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The PARFLUX ? station was located on the Demerara abyssal plain (5,288 m) 750 km from the Guyana coast at 1330,2' ?,'54??.G W. Four sediment traps were placed along a fixed mooring at depths of 389, 988, 3,755 and 5,068 m, and recovered after 98 days (November 1977-February 1978). The water column ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/286798a0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 16
    Electronic Resource
    Electronic Resource
    Factors controlling emission of dimethylsulphide from salt marshes (1987)
    [s.l.] : Nature Publishing Group
    Nature 330 (1987), S. 643-645 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] If we assume that DMS and H2S emission from salt marshes result from processes in the top 2 cm of sediment where plant root biomass and microbial activity are typically greatest14, it is possible to estimate turnover rates for the dissolved gas pools. The observed flux of H2S from salt-marsh ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/330643a0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 17
    Electronic Resource
    Electronic Resource
    The biogeochemistry of toluene in coastal seawater: radiotracer experiments in controlled ecosystems (1985)
    Springer
    Biogeochemistry 1 (1985), S. 307-328 
    Details
    ISSN: 1573-515X
    Keywords: toluene ; biogeochemistry ; volatilization ; degradation ; mesocosm experiments
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: Abstract The fate of toluene in coastal seawater was investigated in controlled ecosystems using14C- and3H-toluene as tracers. Under winter-like conditions, 80% of the toluene volatilized from the water column in 2 months. Microbial degradation was less important than volatilization and sorption onto particulate matter with resultant loss to the sediments was minor. During summer most of the toluene was degraded by microbes. Nearly 80% of the toluene was converted to CO2 within 1 week and the label remained in the water column as dissolved CO2. The experimental results were applied to estimate the removal rates and the residence time of toluene in adjacent Narragansett Bay, Rhode Island. In winter volatilization would dominate the loss of toluene and a residence time of 6 d would be predicted. However, rapid biodegradation in summer would result in a residence time of 〈 1 d.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02187375
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 18
    Electronic Resource
    Electronic Resource
    Membrane lipids of a psychrophilic and barophilic deep-sea bacterium (1986)
    Springer
    Current microbiology 14 (1986), S. 319-322 
    Details
    ISSN: 1432-0991
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract In a psychrophilic and barophilic marine bacterial isolate of the genusAlteromonas, the ratio of total unsaturated versus saturated fatty acids in the membrane lipids increased when the organism was grown at increasing hydrostatic pressures and decreasing temperatures. This regulatory capacity, as well as the presence of relatively large amounts of 20:5 polyunsaturated fatty acid, appear to be functional in maintaining membrane fluidity within a range of pressures distinctly below and above the specific optimum and at typical deep sea temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01568697
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 19
    facet.materialart.
    Unknown
    TEX86 values and temperature estimation for sediment trap samples
    PANGAEA
    In:  Supplement to: Wuchter, Cornelia; Schouten, Stefan; Wakeham, Stuart G; Sinninghe Damsté, Jaap S (2006): Archaeal tetraether membrane lipid fluxes in the northeastern Pacific and the Arabian Sea: Implications for TEX86 aleothermometry. Paleoceanography, 21(4), PA4208, https://doi.org/10.1029/2006PA001279
    Details
    Publication Date: 2023-05-12
    Description: The newly introduced temperature proxy, the tetraether index of archaeal lipids with 86 carbon atoms (TEX86), is based on the number of cyclopentane moieties in the glycerol dialkyl glycerol tetraether (GDGT) lipids of marine Crenarchaeota. The composition of sedimentary GDGTs used for TEX86 paleothermometry is thought to reflect sea surface temperature (SST). However, marine Crenarchaeota occur ubiquitously in the world oceans over the entire depth range and not just in surface waters. We analyzed the GDGT distribution in settling particulate organic matter collected in sediment traps from the northeastern Pacific Ocean and the Arabian Sea to investigate the seasonal and spatial distribution of the fluxes of crenarchaeotal GDGTs and the origin of the TEX86 signal transported to the sediment. In both settings the TEX86 measured at all trap deployment depths reflects SST. In the Arabian Sea, analysis of an annual time series showed that the SST estimate based on TEX86 in the shallowest trap at 500 m followed the in situ SST with a 1 to 3 week time delay, likely caused by the relatively low settling speed of sinking particles. This revealed that the GDGT signal that reaches deeper water is derived from the upper water column rather than in situ production of GDGTs. The GDGT temperature signal in deeper traps at 1500 m and 3000 m did not show a seasonal cyclicity observed in the 500 m trap but rather reflected the annual mean SST. This is probably due to a homogenization of the TEX86 SST signal carried by particles as they ultimately reach the interior of the ocean. Our data confirm the use of TEX86 as a temperature proxy of surface ocean waters.
    Keywords: Arabian Sea; MS-3; MUC; MultiCorer; Northeast Pacific; Trap, sediment; TRAPS; VERTEX_5A; VERTEX_5C
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 20
    facet.materialart.
    Unknown
    Biomarker evidence for anammox in the oxygen minimum zone of the Eastern Tropical North Pacific
    PANGAEA
    In:  Supplement to: Rush, Darci; Wakeham, Stuart G; Hopmans, Ellen C; Schouten, Stefan; Sinninghe Damsté, Jaap S (2012): Biomarker evidence for anammox in the oxygen minimum zone of the Eastern Tropical North Pacific. Organic Geochemistry, 53, 80-87, https://doi.org/10.1016/j.orggeochem.2012.02.005
    Details
    Publication Date: 2023-05-12
    Description: Anaerobic oxidation of ammonium (anammox) is an important process in the marine nitrogen cycle. It has been estimated to contribute up to 50% of nitrogen loss from the ocean, and is especially prevalent within oxygen minimum zones (OMZs). Here we studied the presence and distribution of anammox in the extended OMZ of the Eastern Tropical North Pacific (ETNP) using ladderane fatty acids, specific biomarkers for anammox bacteria. The validity of ladderane fatty acids as proxies for anammox bacteria was demonstrated by their excellent correspondence with anammox 16S rRNA functional gene abundances and their expression and intact polar ladderane lipid concentrations in suspended particulate matter (SPM) from the Arabian Sea. In the ETNP, SPM was collected from various water depths at four stations along a northwest to southeast cruise transect and ladderane fatty acids were analyzed at each station. In all SPM samples where ladderane lipids were detected, C18 ladderane fatty acids were on average 5 fold more abundant than C20 ladderane fatty acids. Maximum concentrations in ladderane fatty acids (1.1 - 2.3 ng/l) were recorded at 400-600 m water depth, often corresponding to the depth of the secondary nitrite maximum. In one of the four stations, a second maximum in the ladderane fatty acid concentration was noted at a shallower depth (i.e. at 85 m), coinciding with higher nitrite concentrations at this water depth. The availability of nitrite probably limits anammox activity in the ETNP. Anammox lipids were abundant within the OMZ at all stations and concentrations were comparable to those in other OMZs, suggesting that anammox may be responsible for a significant loss of nitrogen in the OMZ of the ETNP.
    Keywords: NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...