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  • 1
    Book
    Book
    Ocean margin systems : with 31 tables (2003)
    Berlin : Springer
    Details Availability
    Keywords: Continental margins Congresses ; Oceanography Congresses ; continental margins ; oceanography ; congresses ; Konferenzschrift ; Konferenzschrift 2000 ; Küstengebiet ; Kontinentalrand ; Kontinentalrand
    Type of Medium: Book
    Pages: IX, 495 Seiten , Illustrationen, Diagramme, Karten
    ISBN: 3540439218
    Series Statement: Hanse conference report
    URL: http://www.gbv.de/dms/goettingen/350833532.pdf
    URL: https://swbplus.bsz-bw.de/bsz101228449cov.jpg
    URL: http://www.gbv.de/dms/goettingen/350833532.pdf
    DDC: 551.46
    RVK:
    TI 7000
    Language: English
    Note: Literaturangaben
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  • 2
    Book
    Book
    The benthic boundary layer : transport processes and biogeochemistry (2001)
    Oxford [u.a.] : Oxford University Press
    Details Availability
    Keywords: Ocean bottom ; Benthos ; Sediment transport ; Biogeochemistry ; Ocean bottom ; Benthos ; Sediment transport ; Biogeochemistry ; Aufsatzsammlung ; Meeresgeologie ; Meeresboden ; Benthos ; Sedimenttransport ; Grenzschichtströmung ; Biogeochemie ; Meeressediment ; Oberfläche ; Grenzschicht ; Meerwasser ; Hydrologie ; Benthos ; Grenzschicht ; Transport ; Biogeochemie
    Description / Table of Contents: Physics of flow above the sediment-water interface / W. Brian Dade, Andrew J. Hogg, and Bernard P. Boudreau -- Fine-scale flow measurements in the benthic boundary layer / Arzhang Khalili, Markus Huetell, and Wolfgang Merzkirch -- Suspended particle transport in benthic boundary layers / Paul S. Hill and I.N. McCave -- Solute transport above the sediment-water interface / Bernard P. Boudreau -- The fine structure and properties of the sediment surface / David M. Paterson -- Porewater flow in permeable sediments / Markus Huettel and Ian T. Webster -- Biogeochemical microsensors for boundary layer studies / Michael K(c)ơhl and Neil Peter Revsbech -- Diagenesis and sediment-water exchange / Bo Barker J(c)ırgensen and Bernard P. Boudreau -- In situ sampling in the benthic boundary layer / Clare E. Reimers, Richard A. Jahnke, and Lairenz Thomsen -- Transport and reactions in the bioirrigated zone / Robert C. Aller -- Constraining organic matter cycling with benthic fluxes / Richard A. Jahnke -- Macroscopic animals and plants in benthic flows / Peter A. Jumars, James E. Eckman, and Evamaria Koch -- Life in the diffusive boundary layer / Bo Barker J(c)ırgensen -- Interfacial microbial mats and biofilms / Dirk de Beer and Michael K(c)ơhl
    Type of Medium: Book
    Pages: XII, 404 S. , Ill., graph. Darst. , 25 cm
    ISBN: 0195118812
    URL: http://www.loc.gov/catdir/enhancements/fy0602/99046200-d.html
    URL: http://www.loc.gov/catdir/enhancements/fy0602/99046200-t.html
    URL: http://www.gbv.de/dms/bowker/toc/9780195118810.pdf
    DDC: 551.46084
    RVK:
    RB 10115
    RVK:
    WI 4500
    Language: English
    Note: Includes bibliographical references and index , Physics of flow above the sediment-water interface , Fine-scale flow measurements in the benthic boundary layer , Suspended particle transport in benthic boundary layers , Solute transport above the sediment-water interface , The fine structure and properties of the sediment surface , Porewater flow in permeable sediments , Biogeochemical microsensors for boundary layer studies , Diagenesis and sediment-water exchange , In situ sampling in the benthic boundary layer , Transport and reactions in the bioirrigated zone , Constraining organic matter cycling with benthic fluxes , Macroscopic animals and plants in benthic flows , Life in the diffusive boundary layer , Interfacial microbial mats and biofilms
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  • 3
    Electronic Resource
    Electronic Resource
    BIG BACTERIA (2001)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Microbiology 55 (2001), S. 105-137 
    Details
    ISSN: 0066-4227
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Abstract A small number of prokaryotic species have a unique physiology or ecology related to their development of unusually large size. The biomass of bacteria varies over more than 10 orders of magnitude, from the 0.2 mum wide nanobacteria to the largest cells of the colorless sulfur bacteria, Thiomargarita namibiensis, with a diameter of 750 mum. All bacteria, including those that swim around in the environment, obtain their food molecules by molecular diffusion. Only the fastest and largest swimmers known, Thiovulum majus, are able to significantly increase their food supply by motility and by actively creating an advective flow through the entire population. Diffusion limitation generally restricts the maximal size of prokaryotic cells and provides a selective advantage for mum-sized cells at the normally low substrate concentrations in the environment. The largest heterotrophic bacteria, the 80 x 600 mum large Epulopiscium sp. from the gut of tropical fish, are presumably living in a very nutrient-rich medium. Many large bacteria contain numerous inclusions in the cells that reduce the volume of active cytoplasm. The most striking examples of competitive advantage from large cell size are found among the colorless sulfur bacteria that oxidize hydrogen sulfide to sulfate with oxygen or nitrate. The several-cm-long filamentous species can penetrate up through the ca 500-mum-thick diffusive boundary layer and may thereby reach into water containing their electron acceptor, oxygen or nitrate. By their ability to store vast quantities of both nitrate and elemental sulfur in the cells, these bacteria have become independent of the coexistence of their substrates. In fact, a close relative, T. namibiensis, can probably respire in the sulfidic mud for several months before again filling up their large vacuoles with nitrate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.micro.55.1.105
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  • 4
    Electronic Resource
    Electronic Resource
    A marine microbial consortium apparently mediating anaerobic oxidation of methane (2000)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 407 (2000), S. 623-626 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A large fraction of globally produced methane is converted to CO2 by anaerobic oxidation in marine sediments. Strong geochemical evidence for net methane consumption in anoxic sediments is based on methane profiles, radiotracer experiments and stable carbon isotope data. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35036572
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  • 5
    Electronic Resource
    Electronic Resource
    Biogeochemistry Space for hydrogen (2001)
    [s.l.] : Nature Publishing Group
    Nature 412 (2001), S. 286-289 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Hydrogen is an ideal energy source, not only for an industrialized society but also for various common bacteria. In the anoxic world of soils and sediments, molecular hydrogen is generated by the bacterial degradation of organic material. The hydrogen is immediately recycled and supplies much of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35085676
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  • 6
    Electronic Resource
    Electronic Resource
    Anaerobic ammonium oxidation by anammox bacteria in the Black Sea (2003)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 422 (2003), S. 608-611 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The availability of fixed inorganic nitrogen (nitrate, nitrite and ammonium) limits primary productivity in many oceanic regions. The conversion of nitrate to N2 by heterotrophic bacteria (denitrification) is believed to be the only important sink for fixed inorganic nitrogen in the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature01472
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  • 7
    Electronic Resource
    Electronic Resource
    A fibre-optic scalar irradiance microsensor: application for spectral light measurements in sediments (1991)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 9 (1991), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.1991.tb01759.x
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  • 8
    Electronic Resource
    Electronic Resource
    Thermophilic sulfate-reducing bacteria in cold marine sediment (1994)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 14 (1994), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Sulfate reduction was measured with the 35SO42− -tracer technique in slurries of sediment from Aarhus Bay, Denmark, where seasonal temperatures range from 0° to 15°C. The incubations were made at temperatures from 0°C to 80°C in temperature increments of 2°C to search for presence of psychrophilic, mesophilic and thermophilic sulfate-reducing bacteria. Detectable activity was initially only in the mesophilic range, but after a lag phase sulfate reduction by thermophilic sulfate-reducing bacteria were observed. No distinct activity of psychrophilic sulfate-reducing bacteria was detected. Time course experiments showed constant sulfate reduction rates at 4°C and 30°C, whereas the activity at 60°C increased exponentially after a lag period of one day. Thermophilic, endospore-forming sulfate-reducing bacteria, designated strain P60, were isolated and characterized as D esulfotomaculum kuznetsovii. The temperature response of growth and respiration of strain P60 agreed well with the measured sulfate reduction at 50°–70°C. Bacteria similar to strain P60 could thus be responsible for the measured thermophilic activity. The viable population of thermophilic sulfate-reducing bacteria and the density of their spores was determined in most probable number (MPN) dilutions. The density was 2.8·104 cells·.g−1 fresh sediment, and the enumerations suggested that they were all present as spores. This result agrees well with the observed lag period in sulfate reduction above 50°C. No environment with temperatures supporting the growth of these thermophiles is known in the region around Aarhus Bay.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.1994.tb00084.x
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  • 9
    Electronic Resource
    Electronic Resource
    Sulfate reduction and thiosulfate transformations in a cyanobacterial mat during a diel oxygen cycle (1994)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 13 (1994), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Bacterial sulfate reduction and transformations of thiosulfate were studied with radiotracers in a Microcoleus chthonoplastes-dominated microbial mat growing in a hypersaline pond at the Red Sea. The study showed how a diel cycle of oxygen evolution affected respiration by sulfate-reducing bacteria and the metabolism of thiosulfate through oxidative and reductive pathways. Sulfate reduction occurred in both oxic and anoxic layers of the mat and varied diurnally, apparently according to temperature rather than to oxygen. Time course experiments showed that the radiotracer method underestimated sulfate reduction in the oxic zone due to rapid reoxidation of the produced sulfide. Extremely high reduction rates of up to 10 μmol cm−3 d−1 were measured just below the euphotic zone. Although thiosulfate was simultaneously oxidized, reduced and disproportionated by bacteria in all layers of the mat, there was a shift from predominant oxidation in the oxic zone to predominant reduction below. Concurrent disproportionation of thiosulfate to sulfate and sulfide occurred in all zones and was an important pathway of the sulfur cycle in the mat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.1994.tb00077.x
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  • 10
    Electronic Resource
    Electronic Resource
    Temperature dependence of aerobic respiration in a coastal sediment (1998)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 25 (1998), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The direct temperature dependence of aerobic respiration was determined in sediment from Aarhus Bay, Denmark, in incubations shorter than 12 h at temperature intervals of 1.7°C. Oxygen consumption showed a bimodal distribution between −2 and 80°C indicating the presence of distinct non-thermophilic and thermophilic populations. The thermophilic oxygen consumption had minimum, optimum, and maximum temperatures of 40, 55, and 65°C, respectively, and accelerated strongly after a lag phase of 2–3 h, which may be due to an activation of spores. The source of this dormant thermophilic population is unknown. Oxygen consumption by the non-thermophilic population had minimum and maximum temperatures of 〈−1 and 45°C, respectively. The optimum temperature increased from a broad plateau of 20–30°C in late winter to 30–35°C in late summer, and the apparent activation energy in the natural temperature range (0–15°C) increased from ∼50 to ∼70 kJ mol−1, corresponding to Q10 values of ∼2.0 and ∼3.0, respectively. These changes indicated an adaptation of the aerobic population to seasonal temperature conditions. Due to the seasonal adaptation and to diffusive limitations, a relatively weak temperature dependence of the area-specific aerobic mineralisation rate in the sediment was calculated, Q10=1.8. Model calculations further demonstrated significant shifts in the relative importance of aerobic and anaerobic mineralisation due to seasonal temperature variation, with less importance of aerobic respiration and a larger fraction of benthic oxygen consumption coupled to the reoxidation of reduced inorganic compounds during summer than during winter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.1998.tb00472.x
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