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  • 1
    Electronic Resource
    Electronic Resource
    Community food webs have scale-invariant structure (1984)
    [s.l.] : Nature Publishing Group
    Nature 307 (1984), S. 264-267 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The finding that, in community food webs, the ratio of prey to predators is 3:4 may be challenged on two grounds: first, it is based on a relatively small set of 14 webs, and second it may indicate that taxonomists have exercised greater taxonomic refinement in classifying organisms at higher than ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/307264a0
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  • 2
    Electronic Resource
    Electronic Resource
    Ratio of prey to predators in community food webs (1977)
    [s.l.] : Nature Publishing Group
    Nature 270 (1977), S. 165-167 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Before analysis, food webs were characterised as one of three types-community, sink and source. Community food webs describe all kinds of organisms (possibly restricted to some location, size or taxa) in a habitat, without reference to the eating relations among them. Sink food webs describe all ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/270165a0
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  • 3
    Electronic Resource
    Electronic Resource
    Unexpected dominance of high frequencies in chaotic nonlinear population models (1995)
    [s.l.] : Nature Publishing Group
    Nature 378 (1995), S. 610-612 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The simplest discrete-time population model capable of representing the influence of environmental variability assumes that Pt + ] = r,Pt, pq〉® (ref. 11). Here Pt denotes the population size (assumed to vary continuously) at time /, and r, is a positive-valued random variable that describes ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/378610a0
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  • 4
    Electronic Resource
    Electronic Resource
    Speculation on population (1997)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 387 (1997), S. 565-566 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] During his distinguished scientific career, John Cairns served as director of Cold Spring Harbor Laboratory on Long Island, New York, director of a laboratory of the Imperial Cancer Research Fund in London, and professor at Harvard School of Public Health in Cambridge, Massachusetts. He conducted ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/42395
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  • 5
    Electronic Resource
    Electronic Resource
    Food web patterns and their consequences (1991)
    [s.l.] : Nature Publishing Group
    Nature 350 (1991), S. 669-674 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A food web is a map that describes which kinds of organisms in a community eat which other kinds. A web helps picture how a community is put together and how it works. Although webs were often initially reported in despair at ever understanding ecological complexity, recently discovered widespread ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/350669a0
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  • 6
    Electronic Resource
    Electronic Resource
    Just proportions in food webs (1989)
    [s.l.] : Nature Publishing Group
    Nature 341 (1989), S. 104-105 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN FOOD webs of natural communities with varying numbers of species, the number of green plants and other species that consume no prey in the web (basal species) is nearly proportional, on aver-age, to the number of species that have both predators and prey in the web (inter-mediate species), ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/341104b0
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  • 7
    Electronic Resource
    Electronic Resource
    Paradoxical behaviour of mechanical and electrical networks (1991)
    [s.l.] : Nature Publishing Group
    Nature 352 (1991), S. 699-701 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the network of strings and springs shown in Fig. 1 a, one end of a spring is attached to a fixed support, and the other end to a string of length L = f m. One end of another identical spring is attached to the free end of the string, and a weight is attached to the free end of the second spring. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/352699a0
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