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  • Nature Publishing Group  (9)
  • 1
    Electronic Resource
    Electronic Resource
    Mortality and Viability of Insect Migrants High in the Air (1960)
    [s.l.] : Nature Publishing Group
    Nature 186 (1960), S. 410-410 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Insects have therefore been collected between 1,000 and 5,000 ft. at Cardington, Bedfordshire, England, with the kind co-operation of Mr. L. A. Speed and the staff of the Research and Development Establishment, to see what percentage of insects at these levels are alive and undamaged. The insects ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/186410b0
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  • 2
    Electronic Resource
    Electronic Resource
    Dawn and Dusk Flight of Drosophila subobscura Collin (1954)
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 221-222 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Many insects have been caught by suction trap7 at Rothamsted, but none shows such a striking bi-modal periodicity as the Drosophilidae (several species of Drosophila and Scaptomyza). Specimen catches for D. subobscura on two days of contrasting weather in July and on a dull day in October are ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/174221a0
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  • 3
    Electronic Resource
    Electronic Resource
    Aggregation, Variance and the Mean (1961)
    [s.l.] : Nature Publishing Group
    Nature 189 (1961), S. 732-735 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN populations where the individuals are distributed at random, that is, are independent of each other, the variance (s2) at each population density is equal to the mean (m). Individuals in natural populations are not, however, independent of each other; mutual attraction leads to aggregation which ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/189732a0
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  • 4
    Electronic Resource
    Electronic Resource
    Specificity of the spatial power-law exponent in ecology and agriculture (1988)
    [s.l.] : Nature Publishing Group
    Nature 332 (1988), S. 721-722 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Our original collection4 of 156 data sets from the literature, later supplemented to 221 sets by Downing3, was not ideal5 for inter-specific comparison of b values, comprising samples of selected species collected by diverse methods at varying scales. Such data lack precision when units per sample ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/332721a0
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  • 5
    Electronic Resource
    Electronic Resource
    The Q -statistic and the diversity of floras (1978)
    [s.l.] : Nature Publishing Group
    Nature 275 (1978), S. 252-253 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] LAMONT ET AL.1 accept in principal the Q-, or quartile, statistic for floral diversity, combining both equitability and species richness, that we proposed2,7 and defined as Q = S/loge R2 - loge R1 where S is the total number of species in the sample. We selected the 25% (R1 and 75% (R2) ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/275252a0
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  • 6
    Electronic Resource
    Electronic Resource
    Aggregation, migration and population mechanics (1977)
    [s.l.] : Nature Publishing Group
    Nature 265 (1977), S. 415-421 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A concept is developed for the regulation of populations by density-dependent movement, rather than by overt competition alone. Fitness is seen as maximising the reproductive advantage of a balance between migratory and congregatory behaviours. Population density is shown to be spatially, as well ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/265415a0
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  • 7
    Electronic Resource
    Electronic Resource
    Models and statistics for species diversity (1976)
    [s.l.] : Nature Publishing Group
    Nature 262 (1976), S. 818-820 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 Evaluation of quantile statistic, Q,, from cumulative species abundance curve. Table 1 Analysis of variance of diversity statistics for 7 replicate samples of moth catches from light traps at 14 sites in the Rothamsted Insect Survey Source of variation d.f. Variance mean square ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/262818a0
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  • 8
    Electronic Resource
    Electronic Resource
    Competition and species abundance (1975)
    [s.l.] : Nature Publishing Group
    Nature 257 (1975), S. 160-161 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] HEBERT et al.1 used samples of the aerial population of Macrolepidoptera, collected at light in Ontario, Canada, to advance an argument in competitive population dynamics. Although not entirely explicit, it seems to run as follows. Given the "generally conceded" initial premise that interspecific ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/257160b0
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  • 9
    Electronic Resource
    Electronic Resource
    Behavioural dynamics (1983)
    [s.l.] : Nature Publishing Group
    Nature 303 (1983), S. 801-804 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Anderson et a/.1 use markovian population models to restate the proposition10'11 that environmental and demographic stochasticity determine the relationship between the mean and variance. In such models spatial behaviour, including migration, may affect demographic rates, but its effect is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/303801a0
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