Libri sul tema "Joint species distribution models"

Knowledge is socially distributed, and the distribution of knowledge is socially structured, but the distribution and the structures within which it is produced and reproduced—often two separate things—have varied enormously. Disciplines are one knowledge formation of special significance. They can be thought of as very old, or as a very recent phenomenon: In the very old sense, disciplines begin with the creation of rituals of certification and exclusion related to knowledge; in the more recent sense, they are the product of university organization, and especially that part of university organization that joins research and teaching, knowledge production and reproduction, in the modern research university. If we understand the general structural constraints on knowledge formations, we can understand the peculiar strengths of disciplines, as well as the historical alternatives to disciplines and the motives for finding alternatives.

This outstanding work is the ultimate guide for the identification of Australia’s butterflies. Nearly 400 species – all those currently recognised from Australia, plus those from surrounding islands – are represented, with all adults and some immature stages displayed in stunning colour sections. Introductory chapters cover the history of publications, classification, morphology, distribution, conservation and collection, together with a checklist of the butterfly fauna. The body of the text is arranged systematically, providing a wealth of information including description, variation, similar behaviour, distribution and habitat, and major literature references, giving a comprehensive summary of the present state of knowledge of these insects. Appendices provide details of those species recorded from Australian islands outside the Australian faunal subregion, those protected by legislation, the larval food plants, and the attendant ants. Extensive references, a glossary and an index of scientific and common names complete the work. Joint Winner of the 2001 Whitley Medal. Finalist Scholarly Reference section - The Australian Awards for Excellence in Educational Publishing 2001.

Climatic change likely will exacerbate current threats to carnivorous plants. However, estimating the severity of climatic change is challenged by the unique ecology of carnivorous plants, including habitat specialization, dispersal limitation, small ranges, and small population sizes. We discuss and apply methods for modeling species distributions to overcome these challenges and quantify the vulnerability of carnivorous plants to rapid climatic change. Results suggest that climatic change will reduce habitat suitability for most carnivorous plants. Models also project increases in habitat suitability for many species, but the extent to which these increases may offset habitat losses will depend on whether individuals can disperse to and establish in newly suitable habitats outside of their current distribution. Reducing existing stressors and protecting habitats where numerous carnivorous plant species occur may ameliorate impacts of climatic change on this unique group of plants.

Bonobos and chimpanzees are two closely relates species of the genus Pan, yet they exhibit marked differences in anatomy, behaviour and cognition. For this reason, comparative studies on social behaviour, cognition and brain organization between these two species provide important insights into evolutionary models of human origins. This chapter summarizes studies on socio-communicative competencies and social cognition in chimpanzees and bonobos from the authors’ laboratory in comparison to previous reports. Additionally, recent data on species differences and similarities in brain organization in grey matter volume and distribution is presented. Some preliminary findings on microstructural brain organization such as neuropil space and cellular distribution in key neurotransmitters and neuropeptides involved in social behaviour and cognition is presented. Though these studies are in their infancy, the findings point to potentially important differences in brain organization that may underlie bonobo and chimpanzees’ differences in social behaviour, communication and cognition. Les bonobos et les chimpanzés sont deux espèces du genus Pan prochement liées, néanmoins ils montrent des différences anatomiques, comportementales et cognitives marquées. Pour cette raison, les études comparatives sur le comportement social, la cognition et l’organisation corticale entre ces deux espèces fournissent des idées sur les modèles évolutionnaires des origines humaines. Dans ce chapitre, nous résumons des études sur les compétences socio-communicatives et la cognition sociale chez les chimpanzés et les bonobos de notre laboratoire en comparaison avec des rapports précédents. En plus, nous présentons des données récentes sur les différences et similarités d’organisation corticale du volume et distribution de la matière grise entre espèces. Nous présentons plus de résultats préliminaires sur l’organisation corticale microstructurale comme l’espace neuropile et la division cellulaire dans des neurotransmetteurs clés et les neuropeptides impliqués dans le comportement social et la cognition. Bien que ces études sont dans leur enfance, les résultats montrent des différences d’organisation corticale importantes qui sont à la base des différences de comportement social, la communication et la cognition entre les bonobos et les chimpanzés.

This book employs the ecosocial theory of disease distribution to combine critical political and economic analysis with a deep engagement with biology, in societal, ecological, and historical context. It illuminates what embodying (in)justice entails and the embodied truths revealed by population patterns of health. Chapter 1 explains ecosocial theory and its focus on multilevel spatiotemporal processes of embodying (in)justice, across the lifecourse and historical generations, as shaped by the political economy and political ecology of the societies in which people live. The counter is to dominant narratives that attribute primary causal agency to people’s allegedly innate biology and their allegedly individual (and decontextualized) health behaviors. Chapter 2 discusses application of ecosocial theory to analyze: the health impacts of Jim Crow and its legal abolition; racialized and economic breast cancer inequities; the joint health impacts of physical and social hazards at work (including racism, sexism, and heterosexism) and relationship hazards (involving unsafe sex and violence); and measures of structural injustice. Chapter 3 explores embodied truths and health justice, in relation to: police violence; climate change; fossil fuel extraction and sexually transmitted infectious disease: health benefits of organic food—for whom? ; public monuments, symbols, and the people’s health; and light, vision, and the health of people and other species. The objective is to inform critical and practical research, actions, and alliances to advance health equity—and to strengthen the people’s health—in a deeply troubled world on a threatened planet.

This article focuses on techniques for eliciting expert judgement about complex uncertainties, and more specifically the habitat of the Australian brush-tailed rock-wallaby. Modelling wildlife habitat requirements is important for mapping the distribution of the rock-wallaby, a threatened species, and therefore informing conservation and management. The Bayesian statistical modelling framework provides a useful ‘bridge’, from purely expert-defined models, to statistical models allowing survey data and expert knowledge to be ‘viewed as complementary, rather than alternative or competing, information sources’. The article describes the use of a rigorously designed and implemented expert elicitation for multiple experts, as well as a software tool for streamlining, automating and facilitating an indirect approach to elicitation. This approach makes it possible to infer the relationship between probability of occurrence and the environmental variables and demonstrates how expert knowledge can contribute to habitat modelling.

The aim of the paper was to determine the influence of root systems of chosen tree species found in the Polish Flysch Carpathians on the increase of soil shear strength (root cohesion) in terms of slope stability. The paper's goal was achieved through comprehensive tests on root systems of eight relatively common in the Polish Flysch Carpathians tree species. The tests that were carried out included field work, laboratory work and analytical calculations. As part of the field work, the root area ratio (A IA) of the roots was determined using the method of profiling the walls of the trench at a distance of about 1.0 m from the tree trunk. The width of the. trenches was about 1.0 m, and their depth depended on the ground conditions and ranged from 0.6 to 1.0 m below the ground level. After preparing the walls of the trench, the profile was divided into vertical layers with a height of 0.1 m, within which root diameters were measured. Roots with diameters from 1 to 10 mm were taken into consideration in root area ratio calculations in accordance with the generally accepted methodology for this type of tests. These measurements were made in Biegnik (silver fir), Ropica Polska (silver birch, black locust) and Szymbark (silver birch, European beech, European hornbeam, silver fir, sycamore maple, Scots pine, European spruce) located near Gorlice (The Low Beskids) in areas with unplanned forest management. In case of each tested tree species the samples of roots were taken, transported to the laboratory and then saturated with water for at least one day. Before testing the samples were obtained from the water and stretched in a. tensile testing machine in order to determine their tensile strength and flexibility. In general, over 2200 root samples were tested. The results of tests on root area ratio of root systems and their tensile strength were used to determine the value of increase in shear strength of the soils, called root cohesion. To this purpose a classic Wu-Waldron calculation model was used as well as two types of bundle models, the so called static model (Fiber Bundle Model — FIRM, FBM2, FBM3) and the deformation model (Root Bundle Model— RBM1, RBM2, mRBM1) that differ in terms of the assumptions concerning the way the tensile force is distributed to the roots as well as the range of parameters taken into account during calculations. The stability analysis of 8 landslides in forest areas of Cicikowicleie and Wignickie Foothills was a form of verification of relevance of the obtained calculation results. The results of tests on root area ratio in the profile showed that, as expected, the number of roots in the soil profile and their ApIA values are very variable. It was shown that the values of the root area ratio of the tested tree species with a diameter 1-10 ram are a maximum of 0.8% close to the surface of the ground and they decrease along with the depth reaching the values at least one order of magnitude lower than close to the surface at the depth 0.5-1.0 m below the ground level. Average values of the root area ratio within the soil profile were from 0.05 to 0.13% adequately for Scots pine and European beech. The measured values of the root area ratio are relatively low in relation to the values of this parameter given in literature, which is probably connected with great cohesiveness of the soils and the fact that there were a lot of rock fragments in the soil, where the tests were carried out. Calculation results of the Gale-Grigal function indicate that a distribution of roots in the soil profile is similar for the tested species, apart from the silver fir from Bie§nik and European hornbeam. Considering the number of roots, their distribution in the soil profile and the root area ratio it appears that — considering slope stability — the root systems of European beech and black locust are the most optimal, which coincides with tests results given in literature. The results of tensile strength tests showed that the roots of the tested tree species have different tensile strength. The roots of European beech and European hornbeam had high tensile strength, whereas the roots of conifers and silver birch in deciduous trees — low. The analysis of test results also showed that the roots of the studied tree species are characterized by high variability of mechanical properties. The values Of shear strength increase are mainly related to the number and size (diameter) of the roots in the soil profile as well as their tensile strength and pullout resistance, although they can also result from the used calculation method (calculation model). The tests showed that the distribution of roots in the soil and their tensile strength are characterized by large variability, which allows the conclusion that using typical geotechnical calculations, which take into consideration the role of root systems is exposed to a high risk of overestimating their influence on the soil reinforcement. hence, while determining or assuming the increase in shear strength of soil reinforced with roots (root cohesion) for design calculations, a conservative (careful) approach that includes the most unfavourable values of this parameter should be used. Tests showed that the values of shear strength increase of the soil reinforced with roots calculated using Wu-Waldron model in extreme cases are three times higher than the values calculated using bundle models. In general, the most conservative calculation results of the shear strength increase were obtained using deformation bundle models: RBM2 (RBMw) or mRBM1. RBM2 model considers the variability of strength characteristics of soils described by Weibull survival function and in most cases gives the lowest values of the shear strength increase, which usually constitute 50% of the values of shear strength increase determined using classic Wu-Waldron model. Whereas the second model (mRBM1.) considers averaged values of roots strength parameters as well as the possibility that two main mechanism of destruction of a root bundle - rupture and pulling out - can occur at the same. time. The values of shear strength increase calculated using this model were the lowest in case of beech and hornbeam roots, which had high tensile strength. It indicates that in the surface part of the profile (down to 0.2 m below the ground level), primarily in case of deciduous trees, the main mechanism of failure of the root bundle will be pulling out. However, this model requires the knowledge of a much greater number of geometrical parameters of roots and geotechnical parameters of soil, and additionally it is very sensitive to input data. Therefore, it seems practical to use the RBM2 model to assess the influence of roots on the soil shear strength increase, and in order to obtain safe results of calculations in the surface part of the profile, the Weibull shape coefficient equal to 1.0 can be assumed. On the other hand, the Wu-Waldron model can be used for the initial assessment of the shear strength increase of soil reinforced with roots in the situation, where the deformation properties of the root system and its interaction with the soil are not considered, although the values of the shear strength increase calculated using this model should be corrected and reduced by half. Test results indicate that in terms of slope stability the root systems of beech and hornbeam have the most favourable properties - their maximum effect of soil reinforcement in the profile to the depth of 0.5 m does not usually exceed 30 kPa, and to the depth of 1 m - 20 kPa. The root systems of conifers have the least impact on the slope reinforcement, usually increasing the soil shear strength by less than 5 kPa. These values coincide to a large extent with the range of shear strength increase obtained from the direct shear test as well as results of stability analysis given in literature and carried out as part of this work. The analysis of the literature indicates that the methods of measuring tree's root systems as well as their interpretation are very different, which often limits the possibilities of comparing test results. This indicates the need to systematize this type of tests and for this purpose a root distribution model (RDM) can be used, which can be integrated with any deformation bundle model (RBM). A combination of these two calculation models allows the range of soil reinforcement around trees to be determined and this information might be used in practice, while planning bioengineering procedures in areas exposed to surface mass movements. The functionality of this solution can be increased by considering the dynamics of plant develop¬ment in the calculations. This, however, requires conducting this type of research in order to obtain more data.

Abstract The establishment of mass media organizations in India is contemporaneous with that of its counterparts in the developed world. Indian Media Giants: Unveiling the Business Dynamics of Print Legacies is an analytical chronicle of six Indian mega media conglomerates' individual odyssey from their humble, incipient beginnings in the pre-independence era to their transformation into powerful business empires in the digitised world. The book traces Indian Media metamorphosis, the birth, phase-wise contours of growth and development, travails and trajectories, organizational structures, editorial policies and business dynamics of print majors in India, namely, The Times Group, The Hindu Group, The Hindustan Times Limited, The Indian Express Group, Dainik Jagran Limited and DB Corp Limited. It unravels their understanding of the values of co-dependence, collaboration, and competition with their contemporaries. It is an untold story of how these organizations leapt over the perimeters of conventional greatness to achieve unmeasured success that spans the globe. The book analyses how innovations have been brought in the management policies of these print businesses, with respect to production, distribution, consumption, while accrediting the visionary leadership that drives each organisation forward in its endeavours. What the case studies also details, is the wide extent of strategic intent enunciation; the role of product lines, development and diversification into radio, TV, digital and other segments; geographical spread, expansion, regional penetration and international footprint; the role of technological advancements in throwing up unimaginably new business opportunities; strategic alliances, mergers, acquisitions, joint ventures and takeovers; manpower management policies; CSR activities and financial performance of these media giants. The theoretical implications of the growth of media organisations in terms of the nature of mass media and its products are also underlined. The book focuses on the theoretical framework of media management and pays attention on the changing media management practices from one era to another, gradually orienting and re-orienting the strategic positioning of respective media giants to the pulse of the media market and the opportunities under various regulatory regimes. It is replete with the meticulous analysis of the editorial values and business dynamics upon which their legacies are founded, changing business models adopted by the media moguls, the ripples they have created in the media world and how they are constantly being modified to suit the tastes of the modernising market. With this, and more, Indian Media Giants is a holistic compendium that offers multiple perspectives on how print media organizations in India have grown from strength to strength and have become platform agnostic. The book also details the changing media landscape in India and also underlines the efforts of media giants in retaining print while embracing the digital. The book will be of immense value to the academic fraternity and industry professionals to gain an incisive as well as panoptic view and understanding of the Indian media conglomerates. Compressed in these pages is the analytical story of the past, present and future of the Indian print legacies for the pleasure and curiosity of the readers.