2,864 research outputs found

    Punctuated equilibrium in an evolving bacterial population

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    Recently, Lenski et al have carried out an experiment on bacterial evolution. Their findings support the theory of punctuated equilibrium in biological evolution. We show that the M=2 Bak-Sneppen model can explain some of the experimental results in a qualitative manner.Comment: LaTeX, Five PS figures, Accepted for publication in Physica A, 1st August, 199

    Neu- und Wiederfunde von Gefäßpflanzen in der Grafschaft Bentheim

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    Bei der Kartierung der Gefäßpflanzen im Landkreis Grafschaft Bentheim in den Jahren 1990-1996 wurden eine Reihevon Sippen neu entdeckt und einige verschollene wiedergefunden; davon werden 36 Sippen mit Fundortangaben vorgestellt.Whilst investigating phanerogam plants in the district of the "Grafschaft Bentheim", Lower Saxony, Northwest Germany between 1990 and 1996, a number of new taxa were discovered and some absent taxa were found again, 36 of which will be dealt with in further detail

    Ecological-Evolutionary Theory and Societal Transformation in Post-Communist Europe

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    Ecological-evolutionary theory offers a distinctive perspective on societal change, ie, it draws attention to the enormous & revolutionary power of technological innovations as a source of change. In this light, some implications for European postcommunist societies in the context of transformation are considered. Ecological-evolutionary theory also offers a distinctive perspective on human nature; implications of this are discussed

    Henri Temianka Correspondence; (lenski)

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    https://digitalcommons.chapman.edu/temianka_correspondence/2307/thumbnail.jp
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