Testing a theoretical framework for the environment-species abundance paradigm: a new approach to the Abundant Centre Hypothesis

The linkage between environment, a species' fitness and its abundance is central to the theory of evolution. So far, all studies of this linkage have been heuristic and empirical due to an inability to determine fitness either experimentally (independent of abundance) or theoretically (from species-environment interaction). One category of such studies involves the Abundant Centre Hypothesis which posits that a species' abundance rises to a maximum at the centre of its range. We argue that the confusing mix of results from ACH studies arises from ignoring the central premise that the abundance distribution cannot be independent of the environment. First, we employed a theoretical framework to identify an environmental context (an elevational transect; 200-2800 m in the eastern Himalayas) likely to favour ACH. We then improved upon some previously identified conceptual and methodological shortcomings of ACH studies. Using systematically collected bird data (245 species; 15867 records) from that transect we found that the community average abundance profile is symmetric, as expected by ACH. Notwithstanding which, the abundance profiles of individual species showed a small degree of asymmetry which was correlated with elevation. This elevational dependence may be due to the hard elevational limits at the lower and upper ends of the mountain, as expected from theoretical considerations. We also showed that the average abundance profile shape is close to gaussian, while ruling out uniform and inverted-quadratic shapes. This work demonstrates that selecting a particular category of environmental contexts can help in integrating theoretical tools into a field dominated by empirical studies. Such a union should spur the development of more detailed and testable theoretical models for better insights in an important field.

Yan Fu's Unfaithful Translation of Thomas Huxley's 'Evolution and Ethics'

This paper analyses Yan Fu’s translation of the title and the key terms in Thomas Huxley’s Evolution and Ethics and shows that his unfaithfulness was mainly due to his personal intention to inspire the Chinese people to fight against foreign enemies and the feudal system in late nineteenth-century China. In his famous The Heavenly Theory of Evolution, the translation of Evolution and Ethics, Yan Fu added the traditional Chinese value of ‘heaven’ by translating ‘evolution’ as ‘heavenly evolution’ in order to make Darwin’s theory more acceptable and easier to understand by target readers. When he translated terms such as ‘competition’ and ‘natural selection’, Yan Fu borrowed the slogan of the Westernizing reform to explain the relationship linking evolution, competition and selection. Yan Fu wanted to arouse people’s attention to the theory of evolution and hoped they would use evolutionary thought as a theoretical weapon to save themselves and the country from a national crisis. His unfaithful translation appealed to the scholars to make them spread the theory through their social influence.

Evolutionary Theism of Henryk Levittoux in Polish and International Context

Henryk Levittoux (1822-1879) is currently best known as the model of Jan Matejko who posed for him as Nicolaus Copernicus. Less known, however, is his concept of evolution, which he presented as a part of his philosophical system and which caused a heated debates among Polish intellectuals in the second half of the nineteenth century. Levittoux's theory, which was trying to combine religious dogma with the achievements of contemporary science, breaks out of the popular historical narrative, in which it is assumed that the discussions about the evolutionism were dominated by creationists and pro-Darwinian positivists. The aim of this article will be to present Levittoux's theory of evolution and to show how he combined the ideas of evolution with the concept of Divine creation. Secondary focus of the article will be to place his theory in the broader context of scientific and philosophical changes, that took place in the nineteenth century. Attention will be paid to the way in which the professionalization of science affected natural philosophers, such as Levittoux, who were refusing to accept the rigorous positivist methodology. It will also be shown how Levittoux’s evolutionism became part of the so-called "developmental evolutionism" which promoted a completely different vision of evolution than Darwinism. The non-Darwinian nature of Levittoux's evolutionism was inspired by Étienne Geoffroy Saint-Hilaire’s theory. Levittoux adopted his idea that species evolve thanks to the environmental stimulus which affects their ontogenesis. However, this idea will be extrapolated in Levittoux’s writings to the whole Earth. So, he will conclude that the Earth is the equivalent of the womb in which, like the fetus, all Life develops. All changes of species, in his opinion, are additionally controlled by a universal principle which he called the law of attraction-repulsion. This law was also the tool by which God created the world. The Levittoux’s concept is one of the first attempts to create a synthesis of evolutionism and religious thought in the Polish post-Darwinian philosophy of nature. Levittoux, as a continuator of Saint-Hilaire's thought, is also an interesting example of an attempt to instill in Polish philosophy French evolutionist thought.

Progress in Understanding the Nature of SS433

SS433 is the first example of a microquasar discovered in the Galaxy. It is a natural laboratory for studies of extraordinarily interesting physical processes that are very important for the relativistic astrophysics, cosmic gas dynamics and theory of evolution of stars. The object has been studied for over 40 years in the optical, X-ray and radio bands. By now, it is generally accepted that SS433 is a massive eclipsing X-ray binary in an advanced stage of evolution in the supercritical regime of accretion on the relativistic object. Intensive spectral and photometric observations of SS433 at the Caucasian Mountain Observatory of the P. K. Sternberg Astronomical Institute of M. V. Lomonosov Moscow State University made it possible to find the ellipticity of the SS433 orbit and to discover an increase in the system’s orbital period. These results shed light on a number of unresolved issues related to SS433. In particular, a refined estimate of the mass ratio MxMv>0.8 was obtained (Mx and Mv are the masses of the relativistic object and optical star). Based on these estimates, the relativistic object in the SS433 system is the black hole; its mass is >8M⊙. The ellipticity of the orbit is consistent with the “slaved” accretion disc model. The results obtained made it possible to understand why SS433 evolves as the semi-detached binary instead of the common envelope system.

Economic world: logic

The article examines logical aspects of the economic universe through the lens of its key elements – resources, institutions and interconnections between them. It is emphasized that starting from the New Times one of the main issuesof economic science has been the study of logic, the historical tendency of movement of two key factors (resources): capital and labour. At this stage logical preconditions of the analysis of natural, financial, technological resources acquire considerable significance. The logic of capital and labour is investigated in the context of economic heritage of A. Smith, K. Marx, R. Luxemburg, representatives of the Cambridge school, modern authors (T. Piketty). Starting from ХІХ century, the correlation between capital value and labour value in the national income has been considered the main integral indicator reflecting the state and logic of labour. The logic of natural resources is most fully exemplified by the concept of sustainable economic development, which reflects the content and types of interrelations between the society and the natural environment both at present and in future. At the same time access, distribution and use of resources should take place on the basis of the expenditures-income principle and continue for each generation in a logical and fair way. The logic of technological resources is revealed primarily through the lens of industrial revolutions. Logical dimensions of financial resources have been represented in the works of J.S. Mill, J. Schumpeter and Ch. Kindleberger. Ch. Darwin’s theory of evolution is the basis of institutional logic. Traditions, customs, their evolution, influence on an individual’s behaviour and the philosophy of American pragmatism were the foundation of logic of Veblen’s institutionalism. The logic of relations between resources and institutions is based on the works of B. Russell, A. Whitehead and R. Carnap. Interactionof resources and institutions has been researched in the light of using resources by different generations of human communities and was called ‘the logic of the play between generations’.

Evolution by Sexual Selection

Charles Darwin published his second book “Sexual selection and the descent of man” in 1871 150 years ago, to try to explain, amongst other things, the evolution of the peacock’s train, something that he famously thought was problematic for his theory of evolution by natural selection. He proposed that the peacock’s train had evolved because females preferred to mate with males with more elaborate trains. This idea was very controversial at the time and it wasn’t until 1991 that a manuscript testing Darwin’s hypothesis was published. The idea that a character could arise as a result of a female preference is still controversial. Some argue that there is no need to distinguish sexual from natural selection and that natural selection can adequately explain the evolution of extravagant characteristics that are characteristic of sexually selected species. Here, I outline the reasons why I think that this is not the case and that Darwin was right to distinguish sexual selection as a distinct process. I present a simple verbal and mathematical model to expound the view that sexual selection is profoundly different from natural selection because, uniquely, it can simultaneously promote and maintain the genetic variation which fuels evolutionary change. Viewed in this way, sexual selection can help resolve other evolutionary conundrums, such as the evolution of sexual reproduction, that are characterised by having impossibly large costs and no obvious immediate benefits and which have baffled evolutionary biologists for a very long time. If sexual selection does indeed facilitate rapid adaptation to a changing environment as I have outlined, then it is very important that we understand the fundamentals of adaptive mate choice and guard against any disruption to this natural process.

Eliminativism and Evolutionary Debunking

Eliminativists sometimes invoke evolutionary debunking arguments against ordinary object beliefs, either to help them establish object skepticism or to soften the appeal of commonsense ontology. I argue that object debunkers face a self-defeat problem: their conclusion undermines the scientific support for one of their premises, because evolutionary biology depends on our object beliefs. Using work on reductionism and multiple realizability from the philosophy of science, I argue that it will not suffice for an eliminativist debunker to simply appeal to some object-free surrogate theory of evolution that results from converting any scientific proposition about some object K into a proposition about simples arranged K-wise. In the process, I examine some hazards peculiar to eliminative reductions of scientific theories, and propose a trilemma for eliminativists who attempt to recoup generality for ontologically sparse reducing theories by appealing to pluralities of simples arranged K-wise. The paper is intended to define and develop the object debunker’s self-defeat problem for further study, and to clarify some of the ways sparse and abundant ontologies interact with scientific theory.