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  • Other Sources  (130)
  • Springer Science + Business Media, Inc.  (54)
  • Nature Publishing Group  (44)
  • Potsdam-Institut für Klimafolgenforschung  (32)
  • Molecular Diversity Preservation International
  • 2005-2009  (130)
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  • 1
    Publication Date: 2017-03-13
    Description: Although rising global sea levels will affect the shape of coastlines over the coming decades1, 2, the most severe and catastrophic shoreline changes occur as a consequence of local and regional-scale processes. Changes in sediment supply3 and deltaic subsidence4, 5, both natural or anthropogenic, and the occurrences of tropical cyclones4, 5 and tsunamis6 have been shown to be the leading controls on coastal erosion. Here, we use satellite images of South American mangrove-colonized mud banks collected over the past twenty years to reconstruct changes in the extent of the shoreline between the Amazon and Orinoco rivers. The observed timing of the redistribution of sediment and migration of the mud banks along the 1,500 km muddy coast suggests the dominant control of ocean forcing by the 18.6 year nodal tidal cycle7. Other factors affecting sea level such as global warming or El Niño and La Niña events show only secondary influences on the recorded changes. In the coming decade, the 18.6 year cycle will result in an increase of mean high water levels of 6 cm along the coast of French Guiana, which will lead to a 90 m shoreline retreat.
    Type: Article , PeerReviewed
    Format: text
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  • 2
    Publication Date: 2018-01-04
    Description: Zircon is a common mineral in continental crustal rocks. As it is not easily altered in processes such as erosion or transport, this mineral is often used in the reconstruction of geological processes such as the formation and evolution of the continents. Zircon can also survive under conditions of the Earth’s mantle, and rare cases of zircons crystallizing in the mantle significantly before their entrainment into magma and eruption to the surface have been reported1,2,3. Here we analyse the isotopic and trace element compositions of large zircons of gem quality from the Eger rift, Bohemian massif, and find that they are derived from the mantle. (U–Th)/He analyses suggest that the zircons as well as their host basalts erupted between 29 and 24 million years ago, but fragments from the same xenocrysts reveal U–Pb ages between 51 and 83 million years. We note a lack of older volcanism and of fragments from the lower crust, which suggests that crustal residence time before eruption is negligible and that most rock fragments found in similar basalts from adjacent volcanic fields equilibrated under mantle conditions. We conclude that a specific chemical environment in this part of the Earth’s upper mantle allowed the zircons to remain intact for about 20–60 million years.
    Type: Article , PeerReviewed
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  • 3
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    Nature Publishing Group
    In:  Nature, 435 (7044). p. 901.
    Publication Date: 2019-11-11
    Description: Scattered groups of these ancient fish may all stem from a single remote population. Coelacanths were discovered in the Comoros archipelago to the northwest of Madagascar in 1952. Since then, these rare, ancient fish have been found to the south off Mozambique, Madagascar and South Africa, and to the north off Kenya and Tanzania — but it was unclear whether these are separate populations or even subspecies. Here we show that the genetic variation between individuals from these different locations is unexpectedly low. Combined with earlier results from submersible and oceanographic observations1, 2, our findings indicate that a separate African metapopulation is unlikely to have existed and that locations distant from the Comoros were probably inhabited relatively recently by either dead-end drifters or founders that originated in the Comoros.
    Type: Article , PeerReviewed
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  • 4
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    Nature Publishing Group
    In:  Nature, 447 . p. 383.
    Publication Date: 2019-09-23
    Description: As the complex interplay of forces in the ocean responds to climate change, the dynamics of global ocean circulation are shifting.
    Type: Article , PeerReviewed
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  • 5
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    Springer Science + Business Media, Inc.
    In:  In: Bergey's Manual of Systematic Bacteriology: The Gammaproteobacteria. , ed. by Brenner, D. J., Krieg, N. R. and Staley, J. T. Springer Science + Business Media, Inc., New York, pp. 37-38. ISBN -10: 0-387-24144-2
    Publication Date: 2012-02-23
    Type: Book chapter , PeerReviewed
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  • 6
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    Springer Science + Business Media, Inc.
    In:  In: Bergey's Manual of Systematic Bacteriology: The Alpha-, Beta-, Delta-, and Epsilonproteobacteria. , ed. by Brenner, D. J., Krieg, N. R. and Staley, J. T. Springer Science + Business Media, Inc., New York, pp. 212-215. ISBN -10:0387-24145-0
    Publication Date: 2012-02-23
    Type: Book chapter , PeerReviewed
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  • 7
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    Springer Science + Business Media, Inc.
    In:  In: Bergey's Manual of Systematic Bacteriology: The Gammaproteobacteria. , ed. by Brenner, D. J., Krieg, N. R. and Staley, J. T. Springer Science + Business Media, Inc., New York, pp. 25-26. 2 ISBN 978-0-387-24144-9
    Publication Date: 2012-02-23
    Type: Book chapter , PeerReviewed
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  • 8
    Publication Date: 2017-06-09
    Description: The new aromatic polyketides genoketide A1, genoketide A2 and prechrysophanol glucuronide are biosynthetic intermediates of the octaketide chrysophanol. They were isolated from the alkaliphilic strain Streptomyces sp. AK 671 together with the new metabolite chrysophanol glucuronide. The structures of the compounds were elucidated by mass spectrometry and NMR methods. Genoketide A2 exhibited a slight and prechrysophanol glucuronide a more pronounced inhibition of the proliferation of L5178y lymphoma cells.
    Type: Article , PeerReviewed
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  • 9
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    Springer Science + Business Media, Inc.
    In:  In: Bergey's Manual of Systematic Bacteriology: The Gammaproteobacteria. , ed. by Brenner, D. J., Krieg, N. R. and Staley, J. T. Springer Science + Business Media, Inc., New York, pp. 14-15. ISBN 978-0-387-24144-9
    Publication Date: 2012-02-23
    Type: Book chapter , PeerReviewed
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  • 10
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    Springer Science + Business Media, Inc.
    In:  In: Bergey's Manual of Systematic Bacteriology: The Gammaproteobacteria. , ed. by Brenner, D. J., Krieg, N. R. and Staley, J. T. Springer Science + Business Media, Inc., New York, pp. 28-29. 2 ISBN 978-0-387-24145-6
    Publication Date: 2012-02-23
    Type: Book chapter , PeerReviewed
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