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  • 1
    Online Resource
    Online Resource
    Cham :Springer International Publishing :
    Keywords: Evolution (Biology). ; Human evolution. ; Anthropology. ; Social evolution. ; Evolutionary Biology. ; Evolutionary Anthropology. ; Evolutionary Theory. ; Social Evolution.
    Description / Table of Contents: Prelude -- Preface -- Chapter 1 What Have We Done? -- Chapter 2 A Primer on Evolutionary Roots -- Chapter 3Becoming Human -- Chapter 4 Discovery of Self -- Chapter 5 The March of Progress -- Chapter 6 Whispering Genes -- Chapter 7 The Mating Machine -- Chapter 8 Staying Alive -- Chapter 9 Escape From Self -- Chapter 10 Extension of Self -- Chapter 11 The Big Four Human Drives -- Chapter 12 Becoming The Solution Chapter 13 Troubled Minds On Runaway Selection.
    Abstract: Other animals are driven to spend essentially their whole lives just trying to get fed, stay alive, and get laid. That’s about it. The same was true for our proto-human ancestors. And modern humans of course also require a Survival Drive and a Sex Drive in order to leave descendants. But today we spend most of our lives mainly just trying to convince ourselves that our existence is not absurd. In What We Are, Queen’s University biologist, Lonnie Aarssen, traces how our biocultural evolution has shaped Homo sapiens into the only creature that refuses to be what it is — the only creature preoccupied with a deeply ingrained, and absurd sentiment: I have a distinct ‘mental life’—an ‘inner self’—that exists separately and apart from ‘material life’, and so, unlike the latter, need not come to an end. This delusion conceivably gave our distant ancestors some wishful thinking for finding some measure of relief from the terrifying, uniquely human knowledge of the eventual loss of corporeal survival. But this came with an impulsive, nagging doubt — an obsessive underlying uncertainty: ‘self-impermanence anxiety’. Biocultural evolution, however, was not finished. It also gave us two additional, uniquely human, primal drives, both serving to help quell the burden of this anxiety. Legacy Drive generates delusional cultural domains for ‘extension’ of self; and Leisure Drive generates pleasurable cultural domains for distraction – ‘escape’ – from self. Legacy Drive and Leisure Drive, Aarssen argues, represent two of the most profound consequences of human cognitive and cultural evolution. What We Are advances propositions regarding how a visceral susceptibility to self-impermanence anxiety has — paradoxically — played a pivotal role in rewarding the reproductive success of our ancestors, and has thus been a driving force in shaping fundamental motivations and cultural norms of modern humans. More than any other milestone in the evolution of human minds, self-impermanence anxiety, and its mitigating Drives for Legacy and Leisure, account for not just the advance of civilization over the past many thousands of years, but also now, its impending collapse. Effective management of this crisis, Aarssen insists, will require a deeper and more broadly public understanding of its Darwinian evolutionary roots — as laid out in What We Are.
    Type of Medium: Online Resource
    Pages: XIX, 196 p. 42 illus., 34 illus. in color. , online resource.
    Edition: 1st ed. 2022.
    ISBN: 9783031058790
    DDC: 576.8
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Oecologia 45 (1980), S. 322-324 
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Use of the chi-square statistic for investigating interspecific association has been incorrectly applied to the contact sampling method because of an invalid probability argument. The usual method of calculating expected frequencies leads to a large overestimation and hence bias towards negative association. A correct method of analysis is presented and discussed.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Acta biotheoretica 33 (1984), S. 67-83 
    ISSN: 1572-8358
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The meaning of ‘niche’ and ‘competitive ability’ have long been surrounded by controversy. The reason for this stems from the obscure relationship that exists between these terms. This extends from the views of Darwin through Eltonian tradition to current views in which the meaning of competitive ability is implicitly infused into the paradigm of niche. Distinct operational definitions for niche and competitive ability are therefore established with special reference to plants. It is proposed that potential ‘niche’ refer explicitly to a theoretical hyperspace of ‘places’ where a species would leave descendents if all biotic interactions were precluded, and that competitive ability refer to the relative capacity to leave descendents in a particular ‘place’ in the face of restrictions imposed by competitive interaction. This leads to a qualitative comprehensive theory for coexistence which may be extended to any type of biotic interaction. Niche and competitive ability are both determined by the biological attributes of a species and may be independently adjusted in a population by natural selection in contexts of competition. Species coexistence in nature may therefore be a consequence of alternative evolutionary mechanisms which may operate to various degrees in concert: (1) natural selection leading to niche differentiation; (2) an ongoing process of reciprocal selection (coevolution) which maintains an approximate balance in relative competitive abilities for contested resources.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 177 (1991), S. 139-148 
    ISSN: 1615-6110
    Keywords: Angiosperms ; Lemnaceae ; Lemna minor ; Allozymic variation ; clonal propagation ; morphometry ; cosmopolitan distribution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Allozymic and morphometric variation was studied in 28 clones ofLemna minor. This variation was compared with the corresponding variation in four clones ofLemna gibba and four clones ofSpirodela polyrrhiza. A high level of allozymic variation was observed among the clones, despite having been grown under uniform laboratory conditions for several years and despite its quasi-exclusive clonal means of propagation. Based on degree of allozymic similarity,Spirodela polyrrhiza was distinguished from the twoLemna species but the latter species were genetically indistinguishable. Allozymic similarity among clones ofLemna minor was not related to morphometric similarity, nor was it related to the degree of geographic separation or climatic similarity of their sites of origin. The results suggest that allozymic variation among these clones ofLemna minor may be largely neutral and not a consequence of differential selection.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 180 (1992), S. 205-219 
    ISSN: 1615-6110
    Keywords: Angiosperms ; Lemnaceae ; Lemna minor ; Phenotypic plasticity ; clonal plant ; genotypic variation ; fitness ; origin effect ; duckweed
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Eight genotypes ofLemna minor, originating from four continents, were grown for 15 days in eight different environmental treatments. Fronds under each treatment were then transferred into each of the eight environmental conditions for 15 days. The rate of frond production (relative growth rate) and mean frond biomass were recorded for each pre- and post-transfer treatment and root length was measured for each pre-transfer treatment. For all the traits, the levels of response varied significantly between genotypes (G) and between environmental conditions (E). G × E interaction effect was significant for all traits under pre-transfer treatments and some post-transfer treatments. Both pattern and amount of plasticity were genotypically variable but the amount of variation depended on the trait. The trait representing the best estimate of fitness, growth rate, exhibited the least amount of plasticity and on average, showed the most conservative pattern of plasticity. In contrast, the trait least related to fitness, root length, was the most plastic and showed the most divergent pattern of plasticity. Under some post-transfer treatments, growth rate and mean frond biomass were affected by origin (initial treatment) effect. Pattern and amount of plasticity were also influenced by initial treatments. Since some genotypes may be more affected than others by environmental conditions, origin effect may accentuate G × E interaction and therefore, modify the pattern and amount of plasticity. Comparison between dendrograms based on genetic and phenotypic similarities suggested that there is no relationship between genetic and phenotypic divergence. This lack of relationship may be due to the fact that plasticity is not necessarily adaptive.
    Type of Medium: Electronic Resource
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  • 6
    Publication Date: 2008-07-01
    Print ISSN: 0169-5347
    Electronic ISSN: 1872-8383
    Topics: Biology
    Published by Cell Press
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  • 7
    Publication Date: 2019-12-01
    Print ISSN: 1211-9520
    Electronic ISSN: 1874-9348
    Topics: Biology
    Published by Springer
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  • 8
    Publication Date: 2003-09-01
    Print ISSN: 1211-9520
    Electronic ISSN: 1874-9348
    Topics: Biology
    Published by Springer
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  • 9
    Publication Date: 2004-12-01
    Print ISSN: 1211-9520
    Electronic ISSN: 1874-9348
    Topics: Biology
    Published by Springer
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  • 10
    Publication Date: 2012-08-28
    Print ISSN: 0138-9130
    Electronic ISSN: 1588-2861
    Topics: Information Science and Librarianship , Nature of Science, Research, Systems of Higher Education, Museum Science
    Published by Springer
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