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  • 1
    Electronic Resource
    Electronic Resource
    A watery arms race (2001)
    [s.l.] : Nature Publishing Group
    Nature 411 (2001), S. 745-745 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Imagine yourself in a light forest looking upwards, seeing in your mind's eye only the chlorophyll-bearing cells of the canopy floating in mid-air, free from the attachment of leaves, twigs, branches and trunks. Now forget the forest and the trees, and see only blurred clouds of tiny green cells ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35081210
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Microbial food webs: The ocean's veil (2002)
    [s.l.] : Nature Publishing Group
    Nature 419 (2002), S. 565-565 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ...Imagine being whisked in a flight of fantasy into the microbial world of the oceans' sunlit layer, and being able to see the smallest organisms on the planet running its largest ecosystem. At your new, micrometre-sized scale, water is so thick and viscous that attempting to swim through it would ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/419565a
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Balance: Mind-grasping gravity (2002)
    [s.l.] : Nature Publishing Group
    Nature 415 (2002), S. 481-481 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ...Imagine yourself standing at the edge of a precipice, looking down at its foot, and then crouching at the same place on all fours. The difference between the two sensations is the difference between being human and being a quadruped. Clearly, latent anxiety is inherent in the precarious, human ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/415481a
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Making sense (2004)
    [s.l.] : Nature Publishing Group
    Nature 432 (2004), S. 21-21 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ...Aristotle argued that human beings have five senses at their disposal. Although various other sense organs have come to light since then, this antique dogma still constrains popular imagination. The term ‘sixth sense’ resonates with instinct and metaphysics, implying that although ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/432021a
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Mirror-script and left-handedness (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 118-119 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Leonardo da Vinci's famous sketches are accompanied by illegible notes which, viewed in a mirror, turn out to be neatly written Roman script. Reading and writing mirror script is very difficult for most people, so why did Leonardo go to the trouble? As a code, it is much too easy to crack, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/355118b0
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Phytoplankton growth and CO 2 (1993)
    [s.l.] : Nature Publishing Group
    Nature 363 (1993), S. 678-679 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] RIEBESELL ET AL. REPLY - Turpin makes two important points pertinent to the question of CO2 limitation of phyto-plankton growth. With respect to his first comment, we agree that inorganic carbon use by the common marine di-atom species needs to be rigorously tested. With the exception of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/363678c0
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  • 7
    Electronic Resource
    Electronic Resource
    Importance of iron for plankton blooms and carbon dioxide drawdown in the Southern Ocean (1995)
    [s.l.] : Nature Publishing Group
    Nature 373 (1995), S. 412-415 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The first iron experiments in the Weddell-Scotia Sea5'6 and the Ross Sea7 have shown stimulation of growth by iron; however, other limitations (light and grazing5'6'10'11) were also at play in these near-shore, neritic12 waters where dissolved Fe concentrations4'13'20 commonly exceed ~1 nM, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/373412a0
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Polar ocean ecosystems in a changing world (2005)
    [s.l.] : Nature Publishing Group
    Nature 437 (2005), S. 362-368 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Polar organisms have adapted their seasonal cycles to the dynamic interface between ice and water. This interface ranges from the micrometre-sized brine channels within sea ice to the planetary-scale advance and retreat of sea ice. Polar marine ecosystems are particularly sensitive to climate ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature04161
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    Paper (German National Licenses)
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  • 9
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    Iron fertilization enhanced net community production but not downward particle flux during the Southern Ocean iron fertilization experiment LOHAFEX (2013)
    AGU (American Geophysical Union) | Wiley
    In:  Global Biogeochemical Cycles, 27 (3). pp. 871-881.
    Details
    Publication Date: 2018-03-19
    Description: A closed eddy core in the Subantarctic Atlantic Ocean was fertilized twice with two tons of iron (as FeSO4), and the 300 km2 fertilized patch was studied for 39 days to test whether fertilization enhances downward particle flux into the deep ocean. Chlorophyll a and primary productivity doubled after fertilization, and photosynthetic quantum yield (FV/FM) increased from 0.33 to ≥0.40. Silicic acid (〈2 µmol L−1) limited diatoms, which contributed 〈10% of phytoplankton biomass. Copepods exerted high grazing pressure. This is the first study of particle flux out of an artificially fertilized bloom with very low diatom biomass. Net community production (NCP) inside the patch, estimated from O2:Ar ratios, averaged 21 mmol POC m−2 d−1, probably ±20%. 234Th profiles implied constant export of ~6.3 mmol POC m−2 d−1 in the patch, similar to unfertilized waters. The difference between NCP and 234Th-derived export partly accumulated in the mixed layer and was partly remineralized between the mixed layer and 100 m. Neutrally buoyant sediment traps at 200 and 450 m inside and outside the patch caught mostly 〈1.1 mmol POC m−2 d−1, predominantly of fecal origin; flux did not increase upon fertilization. Our data thus indicate intense flux attenuation between 100 and 200 m, and probably between the mixed layer and 100 m. We attribute the lack of fertilization-induced export to silicon limitation of diatoms and reprocessing of sinking particles by detritus feeders. Our data are consistent with the view that nitrate-rich but silicate-deficient waters are not poised for enhanced particle export upon iron addition.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1002/gbc.20077
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 10
    facet.materialart.
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    Deep carbon export from a Southern Ocean iron-fertilized diatom bloom (2012)
    Nature Publishing Group
    In:  Nature, 487 (7407). pp. 313-319.
    Details
    Publication Date: 2019-09-23
    Description: Fertilization of the ocean by adding iron compounds has induced diatom-dominated phytoplankton blooms accompanied by considerable carbon dioxide drawdown in the ocean surface layer. However, because the fate of bloom biomass could not be adequately resolved in these experiments, the timescales of carbon sequestration from the atmosphere are uncertain. Here we report the results of a five-week experiment carried out in the closed core of a vertically coherent, mesoscale eddy of the Antarctic Circumpolar Current, during which we tracked sinking particles from the surface to the deep-sea floor. A large diatom bloom peaked in the fourth week after fertilization. This was followed by mass mortality of several diatom species that formed rapidly sinking, mucilaginous aggregates of entangled cells and chains. Taken together, multiple lines of evidence—although each with important uncertainties—lead us to conclude that at least half the bloom biomass sank far below a depth of 1,000 metres and that a substantial portion is likely to have reached the sea floor. Thus, iron-fertilized diatom blooms may sequester carbon for timescales of centuries in ocean bottom water and for longer in the sediments.
    Type: Article , PeerReviewed
    Format: text
    Format: text
    Format: text
    DOI: 10.1038/nature11229
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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