The Shannon information function (H) has been extensively used in ecology as a statistic of species diversity. Yet, the use of Shannon diversity index has also been criticized, mainly because of its ambiguous ecological interpretation and because of its relatively great sensitivity to the relative abundances of species in the community. In my opinion, the major shortcoming of the traditional perspective (on the possible relation of species diversity with information theory) is that species (...) need for an external receiver (the scientist or ecologist) to exist and transmit information. Because organisms are self-catalized replicating structures that can transmit genotypic information to offspring, it should be evident that any single species has two possible states or alternatives: to be or not to be. In other words, species have no need for an external receiver since they are their own receivers. Therefore, the amount of biological information (at the species scale) in a community with one only species would be species, and not bits as in the traditional perspective. Moreover, species diversity appears to be a monotonic increasing function of (or S) when all species are equally probable (S being species richness), and not a function of as in the traditional perspective. To avoid the noted shortcoming, we could use 2H (instead of H) for calculating species diversity and species evenness (= 2H/S). However, owing to the relatively great sensitivity of H to the relative abundances of species in the community, the value of species dominance (= 1 − 2H/S) is unreasonably high when differences between dominant and subordinate species are considerable, thereby lowering the value of species evenness and diversity. This unsatisfactory behaviour is even more evident for Simpson index and related algorithms. I propose the use of other statistics for a better analysis of community structure, their relationship being: species evenness + species dominance = 1; species diversity × species uniformity = 1; and species diversity = species richness × species evenness. (shrink)

By Gregory M. Mikkelson School of Environment and Department of Philosophy McGill University, 3534 University Street Montréal, QC H3A 2A7 CANADA [email protected] Keynote contribution to the session "Integrating Ecological and Social Scales" Electronic conference "Landscape Scale Biodiversity Assessment" European Platform for Biodiversity, www.bioplatform.info Posted March 9th, 2005..

From island biogeography theory, the ethic of organic diversity was posited as a precept to guide applied biogeography. It states that humanity must act in such a way as to reduce the rate of worldwide species extinction for an indefinite period of time. Almost 50 years later, the ethic of organic diversity remains relevant in the context of the debate over species translocation practices. Ultimately, matters of biodiversity conservation are too complex to expect an exceptionless moral (...) framework to determine whether species translocation is acceptable in every situation. Instead, individual cases should be judged based on the adequacy of their decision-making processes. (shrink)

Species are the basis of the taxonomic scheme. They are the lowest taxonomic category that are used as units for describing biodiversity and evolution. In this contribution we discuss the current species concept for prokaryotes. Such organisms are considered to represent the widest diversity among living organisms. Species is currently circumscribed as follows: A prokaryotic species is a category that circumscribes a (preferably) genomically coherent group of individual isolates/strains sharing a high degree of similarity in (...) (many) independent features, comparatively tested under highly standardized conditions. Although the number of described prokaryotic species is underrepresented in the living world, this phylo-phenetic or polythetic species concept currently in use is considered to be pragmatic, operational and universally applicable and successfully used for identification processes. (shrink)

Species are the basis of the taxonomic scheme. They are the lowest taxonomic category that are used as units for describing biodiversity and evolution. In this contribution we discuss the current species concept for prokaryotes. Such organisms are considered to represent the widest diversity among living organisms. Species is currently circumscribed as follows: A prokaryotic species is a category that circumscribes a (preferably) genomically coherent group of individual isolates/strains sharing a high degree of similarity in (...) (many) independent features, comparatively tested under highly standardized conditions. Although the number of described prokaryotic species is underrepresented in the living world, this phylo-phenetic or polythetic species concept currently in use is considered to be pragmatic, operational and universally applicable and successfully used for identification processes. (shrink)

As I travel the highways of Georgia, I am regularly appalled by the ubiquitous presence of kudzu. It covers trees, telephone poles, open swathes of land, and old houses, making many locations indistinguishable from one another; all I can see from the road is a wave of green covering any formerly distinctive markings. Thinking back to the intentional introduction of kudzu to the American southeast, I recognize that those individuals who encouraged the planting of kudzu made a serious mistake.1 Their (...) introduction of an invasive species has produced real harms to my local ecosystem.In this paper I will argue that the introduction of invasive species should be avoided, not only because it may directly interfere with .. (shrink)

Traditional diversity measures such as the Shannon entropy are generally computed from the species' relative abundance vector of a given community to the exclusion of species' absolute abundances. In this paper, I first mention some examples where the total information content associated with a given community may be more adequate than Shannon's average information content for a better understanding of ecosystem functioning. Next, I propose a parametric measure of statistical information that contains both Shannon's entropy and total (...) information content as special cases of this more general function. (shrink)

Originally published in 1991, Origins and Species seeks to understand the historical origins of Darwinism. The book analyses the explanatory problem to which Darwinian theory was a response, while contrasting the Darwinian with two other traditions in the interpretation of organic diversity. The book looks in detail at both Charles Darwin's theories and Alfred Russell Wallace's theories of about plant and animal species and raises the question of the context of Darwinism and that of Plato's and Aristotle's (...) understanding of species. (shrink)

Wilhelm von Humboldt's classic study of human language was first published in 1836, as a general introduction to his three-volume treatise on the Kawi language of Java. It is the final statement of his lifelong study of the nature of language, exploring its universal structures and its relation to mind and culture. Empirically wide-ranging - Humboldt goes far beyond the Indo-European family of languages - it remains one of the most interesting and important attempts to draw philosophical conclusions from comparative (...) linguistics. This volume presents a translation by Peter Heath, together with an introduction by Michael Losonsky that places Humboldt's work in its historical context and discusses its relevance to contemporary work in philosophy, linguistics, cognitive science, and psychology. (shrink)

In The Origin of Species (1859) Darwin challenged many of the most deeply-held beliefs of the Western world. Arguing for a material, not divine, origin of species, he showed that new species are achieved by "natural selection." The Origin communicates the enthusiasm of original thinking in an open, descriptive style, and Darwin's emphasis on the value of diversity speaks more strongly now than ever. As well as a stimulating introduction and detailed notes, this edition offers a (...) register of the many writers referred to by Darwin in the text. (shrink)

There is long-standing disagreement among systematists about how to divide biodiversity into species. Over twenty different species concepts are used to group organisms, according to criteria as diverse as morphological or molecular similarity, interbreeding and genealogical relationships. This, combined with the implications of evolutionary biology, raises the worry that either there is no single kind of species, or that species are not real. This book surveys the history of thinking about species from Aristotle to modern (...) systematics in order to understand the origin of the problem, and advocates a solution based on the idea of the division of conceptual labor, whereby species concepts function in different ways - theoretically and operationally. It also considers related topics such as individuality and the metaphysics of evolution, and how scientific terms get their meaning. This important addition to the current debate will be essential for philosophers and historians of science, and for biologists. (shrink)

The study area was a small lowland river valley (the Łęg river) located in the south-east of Poland. The object of investigation was the macrophytes of 10 river lakes with corresponding active river channel stretches of the same length as the cut-offs. The aim was to check the difference in species diversity between cut-off and active river channels. The second aim was to test the following hypothesis: vegetation of river lake has been shaped under the influence of contiguous (...) river stretch which has left a measurable mark in species abundance and composition. To test this, we checked whether a cut-off channel’s flora is more similar to flora of the contiguous river stretch, than to flora of a farther river stretch. During the course of the study it was found that the average species richness was approximately two times higher in the cut-off channels than in the river stretches. The number of the species exclusive for the river lakes was nine times higher in comparison with the river’s exclusives (not found in the cut-offs). The Shannon diversity index definitely spoke in favor of the river lakes. These results clearly show the significance of river lakes in maintaining biodiversity of aquatic ecosystems in a small river valley. We did not confirm our hypothesis concerning floristic relation between an active channel and its cut-offs. The floristic similarity between a given cut-off channel and the contiguous active river channel stretch is not stronger than the similarity between this lake and more distant river stretches. The cause of such a state of affairs may be high natural dynamics of investigated habitats and anthropogenic transformation of the river valley. (shrink)

I defend a view of the species category, pluralistic realism, which is designed to do justice to the insights of many different groups of systematists. After arguing that species are sets and not individuals, I proceed to outline briefly some defects of the biological species concept. I draw the general moral that similar shortcomings arise for other popular views of the nature of species. These shortcomings arise because the legitimate interests of biology are diverse, and these (...) diverse interests are reflected in different legitimate approaches to the classification of organisms. In the final section, I show briefly how the pluralistic approach can help to illuminate some areas of biological and philosophical dispute. (shrink)

I defend a view of the species category, pluralistic realism, which is designed to do justice to the insights of many different groups of systematists. After arguing that species are sets and not individuals, I proceed to outline briefly some defects of the biological species concept. I draw the general moral that similar shortcomings arise for other popular views of the nature of species. These shortcomings arise because the legitimate interests of biology are diverse, and these (...) diverse interests are reflected in different legitimate approaches to the classification of organisms. In the final section, I show briefly how the pluralistic approach can help to illuminate some areas of biological and philosophical dispute. (shrink)

At least three different issues are commonly referred to by the term “the species problem”: one concerns the necessary properties of species, a second the processes responsible for the existence of species, and a third methods for inferring species limits. Solutions have recently been proposed to the first two problems, which are conceptual in nature (the third is methodological). The first equates species with metapopulation lineages and proposes that existence as a separately evolving metapopulation lineage (...) be considered the only necessary property of species. The second views the species category as a cluster concept and proposes that no single process or set of processes be considered necessary for the existence of species. Although these two solutions have been portrayed as being in conflict, they are, in fact, highly compatible. Moreover, the proposals in question clarify the problem concerning methods for inferring the limits of species, which has for a long time been confused with the problem concerning the necessary properties of species. Together these proposals provide the opportunity for biology to move beyond debates about the definition of the species category and focus on estimating the boundaries and numbers of species as well as studying the diverse processes involved in their origin and persistence. BioEssays 27:1263–1269, 2005. © 2005 Wiley Periodicals, Inc. (shrink)

Functional diversity holds the promise of understanding ecosystems in ways unattainable by taxonomic diversity studies. Underlying this promise is the intuition that investigating the diversity of what organisms actually do—i.e. their functional traits—within ecosystems will generate more reliable insights into the ways these ecosystems behave, compared to considering only species diversity. But this promise also rests on several conceptual and methodological—i.e. epistemic—assumptions that cut across various theories and domains of ecology. These assumptions should be clearly (...) addressed, notably for the sake of an effective comparison and integration across domains, and for assessing whether or not to use functional diversity approaches for developing ecological management strategies. The objective of this contribution is to identify and critically analyze the most salient of these assumptions. To this aim, we provide an “epistemic roadmap” that pinpoints these assumptions along a set of historical, conceptual, empirical, theoretical, and normative dimensions. (shrink)

Biological science uses multiple species concepts. Order can be brought to this diversity if we recognize two key features. First, any given species concept is likely to have a patchwork structure, generated by repeated application of the concept to new domains. We illustrate this by showing how two species concepts (biological and ecological) have been modified from their initial eukaryotic applications to apply to prokaryotes. Second, both within and between patches, distinct species concepts may interact (...) and hybridize. We thus defend a semantic picture of the species concept as a collection of interacting patchwork structures. Thus, although not all uses of the term pick out the same kind of unit in nature, the diversity of uses reflects something more than mere polysemy. We suggest that the emphasis on the use of species to pick out natural units is itself problematic, because that is not the term’s sole function. In particular, species concepts are used to manage inquiry into processes of speciation, even when these processes do not produce clearly delimited species. (shrink)

The phylogenetic species concept is applied for the first time to a major radiation of birds, the birds-of-paradise (Paradisaeidae) of Australasia. Using the biological species concept, previous workers have postulated approximately 40–42 species in the family. Of these, approximately 13 are monotypic and 27 are polytypic with about 100 subspecies. Phylogenetic species are irreducible (basal) clusters of organisms (terminal taxa) that are diagnosably distinct from other such clusters. Within the context of this concept, approximately 90 (...) class='Hi'>species of paradisaeids are postulated to have diversified within Australasia. The phylogenetic species concept more accurately describes evolutionary diversity within the family and provides a better theoretical and empirical framework for analysing speciation, historical biogeography and patterns of morphological, behavioral and ecological diversification within this group than does the biological species concept. (shrink)

Concepts and methods originating in one discipline can distort the structure of another when they are applied to the latter. I exemplify this mostly with reference to systematic biology, especially problems which have arisen in relation to the nature of species. Thus the received views of classes, individuals (which term I suggest be replaced by units to avoid misunderstandings), and sets are all inapplicable, but each can be suitably modified. The concept of fuzzy set was developed to deal with (...) species and I defend its applicability. Taxa at all levels are real and participate in biological processes. Analysis of cause and pattern provides the deep structure in which metabiology is grounded; violation of this principle has led to diverse errors in biology. (shrink)

A study was carried out from October, 2020 to September, 2021to investigate the diversity of fishes and the conservation status of Chittaura Jheel (Bahraich), Uttar Pradesh. During the study period, 38 fish species belonging to 28 genera, 14 families and 7 orders have been identified. The order Cypriniformes was found the dominated order with 15 species(39.47%) followed by Siluriformes 10 species (26.31%), Perciformes 4 species (10.52%), Ophiocephaliformes 4 species (10.52%), Synbranchiformes2 species (5.26%), Osteoglossiformes (...) 2 species (5.26%) and Clupiformes 1 species (2.63 %), The present investigation showed that the wetland, Chittaura Jheel possesses rich fish biodiversity but proper conservation measures are required to maintain sustainability and richness of the fish species diversity of that wetland of U.P. According to IUCN, 30 were enlisted as Least Concern (LC), 2 species as near endangered (NE), 3 species as near threatened (NT), 2 listed as Endangered (EN) and 1 species was listed as Vulnerable (VU). There is a need of conservation of fish diversity of this natural wetland. The pressure is increasing day by day due to increasing population, leading to loss of fish diversity hence identifying the problem and making a better management plan is the way for conservation of the fish diversity of the Chittaura Jheel, a wetland of Bahraich district of Uttar Pradesh. (shrink)

This chapter contains section titled: Introduction Emergence of the Stability‐Diversity—Complexity Debate Mathematization of Ecological Stability The End of the Consensus Contextualization and Classification of Ecological Stability Measures of Ecological Diversity and Complexity Evaluating Stability‐Diversity—Complexity Relationships Acknowledgments References Further Reading.

Contrary to frequent characterisations, exotic species should not be identified as damaging species, species introduced by humans, or species originating from some other geographical location. Exotics are best characterised ecologically as species that are foreign to an ecological assemblage in the sense that they have not significantly adapted with the biota constituting that assemblage or to the local abiotic conditions. Exotic species become natives when they have ecologically naturalised and when human influence over their (...) presence in an assemblage (if any) has washed away. Although the damaging nature and anthropogenic origin of many exotic species provide good reasons for a negative evaluation of such exotics, even naturally-dispersing, nondamaging exotics warrant opposition. Biological nativists' antagonism toward exotics need not be xenophobic and can be justified as a way of preserving the diversity of ecological assemblages from the homogenising forces of globalisation. Implications for Yellowstone National Park policy are explored. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Ethics & the Environment 8.1 (2003) 143-150 [Access article in PDF] Species Nova [To See Anew]Art as Ecology David Haley Looking Back From space, looking back at earth, we may see three key issues: the accelerating increase of the human species, the accelerating decrease of other species, and the accelerating effects of climate change. We might ask, how are we to cope with these changes creatively?That (...) our societies tend to value economics over ecology, and monoculture and agro-industry over diversity and permaculture, is certainly worthy of ethical attention. Here I want to invoke a call for integrating art as a necessary contribution to ecological intervention. I consider how artists may engage uncertainty, and how art may be used to develop new ways of seeing and "drawing." This is art for evolutionary survival, not commodification. Art that practices care, shared responsibility, and diversity in the pursuit of eco-centric cultures. Although this paper mainly references visual art forms, this should not be taken to exclude others. Here I am primarily concerned with identifying some of the possible forms of ecological or eco-art. This is art practiced by artist and inventors in the manner of the archetype of Daedalus and worthy of the name implied by the root of the word art. Rt, an ancient term from the Rg Vedas, refers to the virtuous, continuing creation of the cosmos. [End Page 143] Seeing is Believing/ Uncertainty in View The suffix species nova is ascribed by scientists to a new bacterium species, prior to the confirmation of its existence in the appropriate academic journals. The word species means "to look" and "a class of things, living organisms capable of exchanging genes, classified as a taxonomic rank below a genus and denoted by a Latin binomial." It also refers to "the visible form of each of the elements of consecrated bread and wine in the Eucharist." Nova refers to the mistaken sighting of a new star, a flash of brightness that quickly dims. Something novel is a new kind of nature, something strange or previously unknown, and novelty refers to invention. Species nova: two words that evoke ideas about innovations of visual experience and belief.I use the phrase to denote the potential for understanding a new order and evolutionary change—"to see anew." I am also aware that species nova could mean a mistaken religious experience, or a class of living things that flashes brightly and quickly dims. Uncertainty is embedded in the richness of meanings.It is ten years since the Earth Summit in Rio popularized the notion of sustainable development and introduced Agenda 21 as a strategy to achieve it. Sadly, culture and art, two of the systems that define humanity, were not mentioned among the necessary tools for building a better future.But what is sustainable development? Is it about conservation, restoration, or regeneration? Will it stop global warming and feed the poor, or is it like candyfloss—a confection of transient comfort, with no real meaning? Has it become a corrupt cultural construct, an anthropocentric myth in the vain pursuit of hope?Recently the Intergovernmental Panel on Climate Change confirmed that "most of the warming observed over the past 50 years is attributable to human activities." However, the projections and models that have been developed for policy makers to envisage climate change scenarios demonstrate the limits of our ability to understand the situation, let alone adapt to it. A recent review in Nature, comparing two twenty-year forecasts ironically concluded: Uncertainties therefore remain that are beyond the statistical uncertainties described in the two papers. But both sets of authors point out that the upper bound on the potential warming for 2100 may well be [End Page 144] above the IPCC figure of 5.8K under 'heavy emissions' scenarios. So policy-makers should not discount the possibility of a very warm climate considering long-range policy options. (Funnel 2001, 5) A subsequent article in Nature's Climate Change Review reveals even more concern about communicating scientific uncertainty, because models that simulate long-term climate changes cannot be tested using real... (shrink)

The primary outcome of natural selection is adaptation to an environment. The primary concern of epistemology is the acquistion of knowledge. Evolutionary epistemology must therefore draw a fundamental connection between adaptation and knowledge. Existing frameworks in evolutionary epistemology do this in two ways; (a) by treating adaptation as a form of knowledge, and (b) by treating the ability to acquire knowledge as a biologically evolved adaptation. I criticize both frameworks for failing to appreciate that mental representations can motivate behaviors that (...) are adaptive in the real world without themselves directly corresponding to the real world. I suggest a third framework in which mental representations are to reality as species are to ecosystems. This is a many-to-one relationship that predicts a diversity of adaptive representations in the minds of interacting people. As “species of thought”, mental representations share a number of properties with biological species, including isolating mechanisms that prevent them from blending with other representations. Species of thought also are amenable to the empirical methods that evolutionists use to study adaptation in biological species. Empirical studies of mental representations in everyday life might even be necessary for science to succeed as a normative “truth-seeking” discipline. (shrink)

It is commonplace to call for the protection of environmental diversity. I develop an often overlooked reason for preserving diversity: we should preserve diversity in order to preserve the unusual. I show that we do in fact value the unusual, and that we should value the unusual. Recognizing the value of the unusual provides a foundation for valuing species not otherwise considered valuable.

Comparison between different animal species is omnipresent in the history of science and medicine but rarely subject to focussed historical analysis. The articles in the “Working Across Species” topical collection address this deficit by looking directly at the practical and epistemic work of cross-species comparison. Drawn from papers presented at a Wellcome-Trust-funded workshop in 2016, these papers investigate various ways that comparison has been made persuasive and successful, in multiple locations, by diverse disciplines, over the course of (...) two centuries. They explore the many different animal features that have been considered to be comparable, and the ways that animals have shaped science and medicine through the use of comparison. Authors demonstrate that comparison between species often transcended the range of practices typically employed with experimental animal models, where standardised practises and apparatus were applied to standardised bodies to produce generalizable, objective data; instead, comparison across species has often engaged diverse groups of non-standard species, made use of subjective inferences about phenomena that cannot be directly observed, and inspired analogies that linked physiological and behavioural characteristics with the apparent affective state of non-human animals. Moreover, such comparative practices have also provided unusually fruitful opportunities for collaborative connections between different research traditions and disciplines. (shrink)

Richness theory offers an alternative to the paradigms that have dominated the short history of environmental ethics as a self-conscious field. This alternative theoretical paradigm defines intrinsic value as “richness”—a synonym for “organic unity” or “unity in diversity.” Richness theory can handily reconcile two kinds of ideas that seem to be in tension with each other:that (1) an individual human being has a greater worth than an individual organism of just about any other species; and (2) yet the (...) world would be a better place with substantially fewer humans and/or less consumption per capita, thus leaving more resources for other species.The mutual compatibility of such ideas within the framework of richness theory can be demonstrated both verbally and through a simplified mathematical model. (shrink)

Because of the steady involvement of organisms in evolutionary dynamics, of the frequent occurrence of uniparental reproduction and of the diverse outcome of hybridisation events, the species category does not easily apply to a sizeable part of the living world. Problematic is also often the use of the category of the individual, especially in the case of polyembryony, and the distinction between metamorphosis of the individual and metagenesis (alternation of generations) is also often uncertain. More generally, fixing origins is (...) commonly arbitrary, in respect to phylogeny (‘origin’ of species) and ontogeny (‘origin’ of individual) alike. (shrink)

The name ‘pluralism’ frequently rears its head in political philosophy, but theorists often have different things in mind when using the term. Whereas ‘reasonable pluralism’ refers to the fact of moral diversity among citizens of a liberal democracy, ‘value pluralism’ is a metaethical view about the structure of moral practical reasoning. In this paper, I argue that value pluralism is part of the best explanation for reasonable pluralism. However, I also argue that embracing this explanation is compatible with political (...) liberalism’s commitment to avoiding controversial premises. According value pluralism an explanatory role does not entail according it a justificatory one. What’s more, explaining reasonable disagreement in terms of reasonable disagreement about value weights opens up space for direct appeal to substantive values within political liberalism. In particular, promoting a substantive political value when doing so does not conflict with other values is unproblematic. (shrink)

Some recent developments in ecology, economics, and ethics can be brought together within a remarkably simple yet general theoretical framework. Two applications of this framework involve the effects of species diversity on ecosystem productivity, and of economic inequality on biodiversity loss, respectively. In each of these two cases, part of the overall causal relationship is mediated by a diminishing-returns relationship at the lower level (the level of the population or the person, respectively). But same-level (ecosystem or societal, respectively) (...) and/or higher-level (landscape or inter-societal) mechanisms also come in play. In the diversity-productivity case, the proposed theoretical perspective enables one to quantify how much more "the whole is... than the sum of the parts". These aspects of the ecological and economic realms have interesting parallels in the domain of "pure" ethics. (shrink)

Despite their diversity and ecological importance, many areas of the SAR—Stramenopila, Alveolata, and Rhizaria—clade are poorly understood as the majority of SAR species lack molecular data and only 5% of species are from well-sampled families. Here, we review and summarize the state of knowledge about the three major clades of SAR, describing the diversity within each clade and identifying synapomorphies when possible. We also assess the “dark area” of SAR: the morphologically described species that are (...) missing molecular data. The majority of molecular data for SAR lineages are characterized from marine samples and vertebrate hosts, highlighting the need for additional research effort in areas such as freshwater and terrestrial habitats and “non-vertebrate” hosts. We also describe the paucity of data on the biogeography of SAR species, and point to opportunities to illuminate diversity in this major eukaryotic clade. See also the video abstract here: https://youtu.be/_VUXqaX19Rw. Despite their diversity, abundance, and importance, fewer than 10% of the species within the SAR—Stramenopila, Alveolata, and Rhizaria—clade have been assessed using molecular tools. Only a small percentage of the molecular records contain information on ecology or have associate location data, indicating a tremendous dark area. (shrink)

After introducing the new field of cultural evolution, we review a growing body of empirical evidence suggesting that culture shapes what people attend to, perceive and remember as well as how they think, feel and reason. Focusing on perception, spatial navigation, mentalizing, thinking styles, reasoning (epistemic norms) and language, we discuss not only important variation in these domains, but emphasize that most researchers (including philosophers) and research participants are psychologically peculiar within a global and historical context. This rising tide of (...) evidence recommends caution in relying on one’s intuitions or even in generalizing from reliable psychological findings to the species, Homo sapiens. Our evolutionary approach suggests that humans have evolved a suite of reliably developing cognitive abilities that adapt our minds, information-processing abilities and emotions ontogenetically to the diverse culturally-constructed worlds we confront. (shrink)

Phosphoinositides modulate a plethora of functions including signal transduction and membrane trafficking. PtdInsPs are thought to consist of seven interconvertible species that localize to a specific organelle, to which they recruit a set of cognate effector proteins. Here, in reviewing the literature, we argue that this model needs revision. First, PtdInsPs can carry a variety of acyl chains, greatly boosting their molecular diversity. Second, PtdInsPs are more promiscuous in their localization than is usually acknowledged. Third, PtdInsP interconversion is (...) likely achieved through kinase-phosphatase enzyme complexes that coordinate their activities and channel substrates without affecting bulk substrate population. Additionally, we contend that despite hundreds of PtdInsP effectors, our attention is biased toward few proteins. Lastly, we recognize that PtdInsPs can act to nucleate coincidence detection at the effector level, as in PDK1 and Akt. Overall, better integrated models of PtdInsP regulation and function are not only possible but needed. Phosphoinositides are lipids that control many cellular functions. However, the field of PtdInsP signaling is dominated by several dogmatic notions. Here, we offer an updated glimpse on the current state of the field regarding molecular diversity, localization, organization of modifying enzymes, effector types, and effector organization. (shrink)

Despite their diversity and ecological importance, many areas of the SAR—Stramenopila, Alveolata, and Rhizaria—clade are poorly understood as the majority (90%) of SAR species lack molecular data and only 5% of species are from well‐sampled families. Here, we review and summarize the state of knowledge about the three major clades of SAR, describing the diversity within each clade and identifying synapomorphies when possible. We also assess the “dark area” of SAR: the morphologically described species that (...) are missing molecular data. The majority of molecular data for SAR lineages are characterized from marine samples and vertebrate hosts, highlighting the need for additional research effort in areas such as freshwater and terrestrial habitats and “non‐vertebrate” hosts. We also describe the paucity of data on the biogeography of SAR species, and point to opportunities to illuminate diversity in this major eukaryotic clade. (shrink)

I argue against several extant views (Rolston, etc) about the value of endangered species. I argue that the best way to defend a non-anthropocentric view about the value of endangered species is to appeal to the intrinsic value of biological diversity.

In this paper I will argue that Hegel’s account of the category of life in the Science of Logic provides ontological grounds for the recognition of living species along with their various ecosystems as the proper objects of ethical regard for environmental ethics. I will begin by enumerating some of the salient problems that have arisen in the more well known theoretical attempts to articulate human duties to nonhuman beings. Then after a brief discussion of Hegel’s methodology and the (...) justification for turning to his ontological account, I will explicate Hegel’s ontology of life with a view toward these problems and issues, presenting my argument as to why that account is relevant to environmental ethics and deriving from it a normative framework that implies a duty to preserve species, habitats, and biological diversity. Finally, I will suggest how the Hegelian account presented here might circumvent the shortcomings of the previously discussed theories while accommodating some of their concerns and provide solutions for some of the problems to which they call attention. (shrink)

Human culture is uniquely complex compared to other species. This complexity stems from the accumulation of culture over time through high- and low-fidelity transmission and innovation. One possible reason for why humans retain and create culture, is our ability to modulate teaching strategies in order to foster learning and innovation. We argue that teaching is more diverse, flexible, and complex in humans than in other species. This particular characteristic of human teaching rather than teaching itself is one of (...) the reasons for human’s incredible capacity for cumulative culture. That is, humans unlike other species can signal to learners whether the information they are teaching can or cannot be modified. As a result teaching in humans can be used to support high or low fidelity transmission, innovation, and ultimately, cumulative culture. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Ethics & the Environment 8.1 (2003) 143-150 [Access article in PDF] Species Nova [To See Anew]Art as Ecology David Haley Looking Back From space, looking back at earth, we may see three key issues: the accelerating increase of the human species, the accelerating decrease of other species, and the accelerating effects of climate change. We might ask, how are we to cope with these changes creatively?That (...) our societies tend to value economics over ecology, and monoculture and agro-industry over diversity and permaculture, is certainly worthy of ethical attention. Here I want to invoke a call for integrating art as a necessary contribution to ecological intervention. I consider how artists may engage uncertainty, and how art may be used to develop new ways of seeing and "drawing." This is art for evolutionary survival, not commodification. Art that practices care, shared responsibility, and diversity in the pursuit of eco-centric cultures. Although this paper mainly references visual art forms, this should not be taken to exclude others. Here I am primarily concerned with identifying some of the possible forms of ecological or eco-art. This is art practiced by artist and inventors in the manner of the archetype of Daedalus and worthy of the name implied by the root of the word art. Rt, an ancient term from the Rg Vedas, refers to the virtuous, continuing creation of the cosmos. [End Page 143] Seeing is Believing/ Uncertainty in View The suffix species nova is ascribed by scientists to a new bacterium species, prior to the confirmation of its existence in the appropriate academic journals. The word species means "to look" and "a class of things, living organisms capable of exchanging genes, classified as a taxonomic rank below a genus and denoted by a Latin binomial." It also refers to "the visible form of each of the elements of consecrated bread and wine in the Eucharist." Nova refers to the mistaken sighting of a new star, a flash of brightness that quickly dims. Something novel is a new kind of nature, something strange or previously unknown, and novelty refers to invention. Species nova: two words that evoke ideas about innovations of visual experience and belief.I use the phrase to denote the potential for understanding a new order and evolutionary change—"to see anew." I am also aware that species nova could mean a mistaken religious experience, or a class of living things that flashes brightly and quickly dims. Uncertainty is embedded in the richness of meanings.It is ten years since the Earth Summit in Rio popularized the notion of sustainable development and introduced Agenda 21 as a strategy to achieve it. Sadly, culture and art, two of the systems that define humanity, were not mentioned among the necessary tools for building a better future.But what is sustainable development? Is it about conservation, restoration, or regeneration? Will it stop global warming and feed the poor, or is it like candyfloss—a confection of transient comfort, with no real meaning? Has it become a corrupt cultural construct, an anthropocentric myth in the vain pursuit of hope?Recently the Intergovernmental Panel on Climate Change confirmed that "most of the warming observed over the past 50 years is attributable to human activities." However, the projections and models that have been developed for policy makers to envisage climate change scenarios demonstrate the limits of our ability to understand the situation, let alone adapt to it. A recent review in Nature, comparing two twenty-year forecasts ironically concluded: Uncertainties therefore remain that are beyond the statistical uncertainties described in the two papers. But both sets of authors point out that the upper bound on the potential warming for 2100 may well be [End Page 144] above the IPCC figure of 5.8K under 'heavy emissions' scenarios. So policy-makers should not discount the possibility of a very warm climate considering long-range policy options. (Funnel 2001, 5) A subsequent article in Nature's Climate Change Review reveals even more concern about communicating scientific uncertainty, because models that simulate long-term climate changes cannot be tested using real... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Ethics & the Environment 8.1 (2003) 143-150 [Access article in PDF] Species Nova [To See Anew]Art as Ecology David Haley Looking Back From space, looking back at earth, we may see three key issues: the accelerating increase of the human species, the accelerating decrease of other species, and the accelerating effects of climate change. We might ask, how are we to cope with these changes creatively?That (...) our societies tend to value economics over ecology, and monoculture and agro-industry over diversity and permaculture, is certainly worthy of ethical attention. Here I want to invoke a call for integrating art as a necessary contribution to ecological intervention. I consider how artists may engage uncertainty, and how art may be used to develop new ways of seeing and "drawing." This is art for evolutionary survival, not commodification. Art that practices care, shared responsibility, and diversity in the pursuit of eco-centric cultures. Although this paper mainly references visual art forms, this should not be taken to exclude others. Here I am primarily concerned with identifying some of the possible forms of ecological or eco-art. This is art practiced by artist and inventors in the manner of the archetype of Daedalus and worthy of the name implied by the root of the word art. Rt, an ancient term from the Rg Vedas, refers to the virtuous, continuing creation of the cosmos. [End Page 143] Seeing is Believing/ Uncertainty in View The suffix species nova is ascribed by scientists to a new bacterium species, prior to the confirmation of its existence in the appropriate academic journals. The word species means "to look" and "a class of things, living organisms capable of exchanging genes, classified as a taxonomic rank below a genus and denoted by a Latin binomial." It also refers to "the visible form of each of the elements of consecrated bread and wine in the Eucharist." Nova refers to the mistaken sighting of a new star, a flash of brightness that quickly dims. Something novel is a new kind of nature, something strange or previously unknown, and novelty refers to invention. Species nova: two words that evoke ideas about innovations of visual experience and belief.I use the phrase to denote the potential for understanding a new order and evolutionary change—"to see anew." I am also aware that species nova could mean a mistaken religious experience, or a class of living things that flashes brightly and quickly dims. Uncertainty is embedded in the richness of meanings.It is ten years since the Earth Summit in Rio popularized the notion of sustainable development and introduced Agenda 21 as a strategy to achieve it. Sadly, culture and art, two of the systems that define humanity, were not mentioned among the necessary tools for building a better future.But what is sustainable development? Is it about conservation, restoration, or regeneration? Will it stop global warming and feed the poor, or is it like candyfloss—a confection of transient comfort, with no real meaning? Has it become a corrupt cultural construct, an anthropocentric myth in the vain pursuit of hope?Recently the Intergovernmental Panel on Climate Change confirmed that "most of the warming observed over the past 50 years is attributable to human activities." However, the projections and models that have been developed for policy makers to envisage climate change scenarios demonstrate the limits of our ability to understand the situation, let alone adapt to it. A recent review in Nature, comparing two twenty-year forecasts ironically concluded: Uncertainties therefore remain that are beyond the statistical uncertainties described in the two papers. But both sets of authors point out that the upper bound on the potential warming for 2100 may well be [End Page 144] above the IPCC figure of 5.8K under 'heavy emissions' scenarios. So policy-makers should not discount the possibility of a very warm climate considering long-range policy options. (Funnel 2001, 5) A subsequent article in Nature's Climate Change Review reveals even more concern about communicating scientific uncertainty, because models that simulate long-term climate changes cannot be tested using real... (shrink)

This paper offers a paleobiological perspective on the debate concerning the possible use of biotechnology to bring back extinct species. One lesson from paleobiology is that extinction selectivity matters in addition to extinction rates and extinction magnitude. Combining some of Darwin’s insights about artificial selection with the theory of species selection that paleobiologists developed in the 1970s and 1980s provides a useful context for thinking about de-extinction. Using recent work on the prioritization of candidate species for de-extinction (...) as a test case, the paper argues that de-extinction would be a form of artificial species selection in which humans influence which species persist vs. go extinct. This points to a serious gap in our ethical theory: Much work has been done to clarify the value of biological diversity, but we also need theoretical guidance for decisions that amount to species sorting, and that will shape the macroevolutionary future. (shrink)

As a sort of intellectual provocation and as a lateral thinking strategy for creativity, this chapter seeks to determine what the study of the dynamics of biodiversity can offer linguists. In recent years, the analogical equation "language = biological species" has become more widespread as a metaphorical source for conceptual renovation, and, at the same time, as a justification for the defense of language diversity. Language diversity would be protected in a way similar to the mobilization that (...) has taken place to protect endangered species. Nevertheless, one must be careful when uncritically transferring conceptualizations and theoretical frameworks from one field to another, since obviously, these two phenomena are quite different in the real world. The dialogue with bioecologists starts by asking about the formation of diversity, i.e., about specialization. Here, one can observe the similarity between the processes of linguistic and genetic fragmentation, in the sense that both phenomena have a (socio)geographical basis for dispersion and consequently, for the loss of their original compact nature and their intercommunication. The self-organizing and creative properties of human beings favor the development of specific varieties for each subset, varieties that continue to evolve constantly, through the unceasing "languaging" of humanity. Regarding the continuity of species or languages, one can also observe the decisive role of intragroup relations. The staying power of linguistic varieties will increase in direct proportion to the intensity of the relationship among the components of the subset. On the other hand, if exotic elements are introduced, especially if these elements are aggressive in nature, the alteration of the ecological niche may turn out to be fatal for the continuity of the previously existing forms. This suggests to us the need to make an in-depth study of what the minimal contextual conditions would be so that a set linguistic group could be assured a sustainable continuity within a framework of linguistic contact. What type of minimum (socio-)ecological niche would a language have to have if we wished to ensure its habitual reproduction? A proposal is made here to explore the ideas of "exclusive functions" and "non-hierarchical functional distribution" for codes in situations where there is high contact and a danger of disuse. As regards change, this phenomenon is seen as an inherent element in the tendency of life to create new developments, which may or not be accompanied by an adaptation to changing environmental conditions. It is pointed out that, similar to what happens in biology, much of linguistic innovation stems from a systemically reorganized mixture of solutions from different codes. An important research question would be, however, to determine why some of these innovations disappear and others survive and extend throughout the community. The big question mark, as Mufwene points out, is, then how to manage to understand how "the evolution of language proceeds by naturally selecting from among the competing alternatives available through the idiolects of individual speakers". Extinction, whether it be of languages or of species, is caused in most cases "by a combination of demographic processes and environmental changes", as Brown points out. Thus, the environment plays a fundamental role in the direction of evolution, since the "the survival of the fittest is, in actuality, the survival of those who fit into the context (Allen and Hoekstra)". This allows us to see the great degree of importance of political-economic contexts in the case of languages. In the same way, migratory movements are also one of the major variables determining the extinction of biodiversity and language diversity. Species and habitat form the basic unit of existence, and this is the major point of departure for understanding the problem of the preservation and recovery of species or languages. Given the increase in the degree of linguistic contact, the continuity of language diversity depends on determining, as exactly as possible, as Prigogine, the physicist, would say, what precise conditions of imbalance may prove to be stable. The great challenge is not so much avoiding contact but managing it. And "restorative ecology" can also be of help to us here. Being able to reach sustainable solutions for language diversity implies a profound knowledge of the dynamics for determining the ways in which language is used in contact situations. The general conclusion is that linguistics is still terminologically and conceptually ill prepared to deal with the dynamic character of human languages. The world and our objects must be conceived of as elements in a state of flux, as changing systems in an unstable equilibrium. With respect to language policy, it would be necessary to make an effort to manage to establish some general principles regarding the linguistic organization of the human species that would make it possible for local linguistic diversity and communication on a planetary scale, which must necessarily take place, to be compatible with each other. To succeed, it will be necessary to continue promoting an autonomous socio-ecological perspective devoted to the comprehension of language phenomena. Such a perspective would be based on a paradigm of complexity, and would, at the same time, place human beings at the center of its theoretical underpinnings. (shrink)

The paper presents an accommodation problem for extant semantic accounts of fiction. Some accounts of fiction are designed to accommodate one or another form of fictive statement exclusively, what I shall call in-fiction and out-fiction. Thus, typically, the accounts fail to do justice to their respective excluded form. A natural response, entertained by Kripke and in a different fashion by latter-day Meinongians, is to let the two different kinds of fiction have their respective accounts. It is very easy, however, to (...) mix in and out predicates, which amounts to a species of copredication, where a single nominal receives simultaneous distinct interpretations relative to distinct predicates without creating ambiguity. Copredication is a perfectly general phenomenon that arises for any nominal. The simple problem now is that copredication appears to render all extant accounts of fiction either essentially partial, in dealing with one kind of simple form of fiction but not another, or merely wrong in imagining that fiction comes in categorically distinct forms, for the coherence of copredication is enough to show that this is not so. The aim of the paper is to show to resolve this accommodation problem by the radical expedient of suggesting that the fiction/non-fiction distinction is not really a semantic one, but more one between different ways in which sentences are made true or false. (shrink)