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  • Nature Publishing Group  (4,436)
  • 1995-1999  (4,436)
  • 1996  (4,436)
  • 1
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    Deep-breathing cephalopods? (1996)
    Nature Publishing Group
    In:  Nature, 384 (6608). p. 421.
    Details
    Publication Date: 2021-08-20
    Type: Article , PeerReviewed
    Format: text
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    PAPER (OCEANREP)
  • 2
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    Two-way exchange between the Easter mantle plume and the Easter microplate spreading axis (1996)
    Nature Publishing Group
    In:  Nature, 382 (6589). pp. 344-346.
    Details
    Publication Date: 2017-02-27
    Description: The conventional model whereby plume volcanism forms linear age-progressive volcanic chains, with the youngest activity occurring nearest a spreading axis (at a 'hotspot'), has been challenged for the Easter seamount chain1–4. Whereas early work suggested the existence of a linear melting anomaly (a 'hotline')1,2, more recent studies3,4 have proposed a hotspot near Salas y Gomez island, connected with the Easter microplate spreading system by an ~800-km-long, volcanically active plume channel. Here we use geochemical, geological and geochronological data to argue that the hotspot lies close to Easter Island. Moreover, new isotopic data for lavas from the seamount chain provide evidence for bidirectional flow between the spreading axis and the plume, thus supporting geophysical and fluid-dynamical models of mantle flow in a plume/spreading axis system5–7. Material balance and flux considerations show the Easter plume to be weak and cool compared with those beneath larger features such as Iceland, Hawaii and the Galápagos islands.
    Type: Article , PeerReviewed
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  • 3
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    Chlorin accumulation rate as a proxy for Quaternary marine primary productivity (1996)
    Nature Publishing Group
    In:  Nature, 383 (6595). pp. 63-65.
    Details
    Publication Date: 2017-02-27
    Description: A knowledge of past changes in the biological productivity of the oceans is important for understanding the interactions between carbon cycling and climate. Phytoplankton productivity in today's oceans can be estimated from the concentrations of chlorophyll in sea water1, but chlorophyll is not preserved in the sediments. Existing proxies for past algal productivity do not represent total productivity; for example, biogenic opal2 reflects the contribution of only part of the phytoplankton community, and the organic carbon record can be subject to contamination from terrestrial inputs2,3. Although chlorins, the pigment-transformation products of chlorophyll, are widespread in Quaternary marine sediments, their potential as proxy measures of past variations in primary productivity has not been convincingly demonstrated. Here we report a high-resolution molecular stratigraphic record of chlorin concentrations over the past 350,000 years in a sediment core from the subtropical Atlantic continental margin. Maxima in the chlorin accumulation rate coincide with significant peaks in the accumulation rates of biogenic opal (at the end of glacial terminations) and organic carbon (between terminations). These results suggest that chlorins, unlike other proxies, can serve as a measure of total primary productivity variations.
    Type: Article , PeerReviewed
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  • 4
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    Flavodoxin as an in situ marker for iron stress in phytoplankton (1996)
    Nature Publishing Group
    In:  Nature, 382 . pp. 802-805.
    Details
    Publication Date: 2017-02-27
    Description: A fundamental issue in marine science is the identification of the factors controlling biological uptake of CO2, in high-nitrate, low-chlorophyll regions. A recent in situ iron fertilization experiment demonstrated that iron limitation is responsible for low phytoplankton stocks in the equatorial Pacific4. Here we show that flavodoxin, a biochemical marker of iron limitation, can be used to map the degree of iron stress in natural populations. Flavodoxin assays along a 900-km east-west transect in the northeastern subarctic Pacific revealed a pronounced increase in iron stress in the region west of the 135° W meridian. Addition of dissolved iron alleviated this stress. Immunostaining of single cells from the most western station showed that flavodoxin is present specifically within the chloroplasts of diatoms. Our approach provides a rapid means of defining the extent of iron stress in the ocean5 and supports the hypothesis that diatoms are iron stressed in the northeast Pacific.
    Type: Article , PeerReviewed
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  • 5
    Electronic Resource
    Electronic Resource
    NIH drops plan for multiyear grants (1996)
    [s.l.] : Nature Publishing Group
    Nature 384 (1996), S. 601-601 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington. The US National Institutes of Health (NIH) has abandoned a plan to issue some young researchers with multiyear grants after lawyers at the Department of Health and Human Services said that it would breach departmental regulations. The reversal means that the NIH will now have to spend ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/384601b0
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  • 6
    Electronic Resource
    Electronic Resource
    Britain launches two Studies Advances of 'Gulf War syndrome'... (1996)
    [s.l.] : Nature Publishing Group
    Nature 384 (1996), S. 604-604 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] London. Britain's Ministry of Defence (MoD) last week announced two epidemio-logical studies of illness among Gulf War veterans — two years after the US government set up a study on the possible link between US troops' exposure to chemical weapons during the war and their subsequent ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/384604a0
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  • 7
    Electronic Resource
    Electronic Resource
    Hopes rise for agreement on greenhouse gas targets (1996)
    [s.l.] : Nature Publishing Group
    Nature 384 (1996), S. 605-605 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington. A consensus appears to be growing steadily among signatories to the international climate convention of 1992 on the need for binding targets for emissions of greenhouse gases. Although a review meeting in Geneva last week made little progress towards reaching an agreement on targets, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/384605b0
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  • 8
    Electronic Resource
    Electronic Resource
    EU urges national action to police imports of genetically altered maize (1996)
    [s.l.] : Nature Publishing Group
    Nature 384 (1996), S. 502-503 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Paris. The European Commission admitted last week that genetically engineered maize has been illegally imported into the European Union (EU) since the beginning of October. One official from the commis-sion claims that it is powerless to bring an immediate end to the imports, arguing that ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/384502c0
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  • 9
    Electronic Resource
    Electronic Resource
    Australian universities brace for higher fees after Senate vote (1996)
    [s.l.] : Nature Publishing Group
    Nature 384 (1996), S. 504-504 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sydney. Scientists have failed in their campaign to reverse the Australian govern-ment's decision to increase student fees for university courses. The finely balanced Sen-ate rejected Opposition moves to oppose the increases, which were announced in the budget in August. Two independent sena-tors ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/384504c0
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  • 10
    Electronic Resource
    Electronic Resource
    Divided by a common language (1996)
    [s.l.] : Nature Publishing Group
    Nature 384 (1996), S. 508-508 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - J. x C. Sellick (Nature 383, 569; 1996) has my sympathy. My family name is Ambrogi Lorenzini (without hyphen); my given name is Carlo. But Current Contents persists, in spite of my protests, in listing me as C. A. Lorenzini, which is both annoy-ing and damaging. The reason is apparently that ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/384508b0
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