The Beekeeper's Wife
The Beekeeper's Wife is inspired by Herbert Scott's poem of the same name. It is an attempt to imagine the life of the woman behind the poem.Shanda Hansma Blue's The Beekeeper's Wife is a brilliant poetic argument between nature and the reader, between the beekeeper's wife and the beekeeper, between where a woman exists in her small and large spaces and the woman. It is a powerful rendition of the woman's world, a world where only we can exist. We are the keeper of the day, rising at dawn, before the sunrises, as if the sun's rise solely depended on us or as if nature itself were in the same complex relationship the woman has with the beekeeper. I have always believed that the poet is a philosopher, and Shanda proves this well in her fresh use of language, where the beekeeper's wife "lives in the five percent zone/ of northern lights visibility./" Again, Hansma Blue shows us that the beekeeper's wife "thinks of this as her numerical data/ her location on the statistical/ halo of Earth's aurora latitudes." In one of her powerful poems, 'Bargain', Shanda tells us, "My grandfather always said of loud girls/ A whistling woman is like a crowing hen/." Indeed, Shanda Hansma Blue is "a crowing hen," where she juxtapositions the world of her speaker, the beekeeper's wife and that of the beekeeper. This is not a book of poetry about nature despite its attention to the many vivid details of the nature around the speaker; it is a story about womanhood alongside that of manhood. Here nature and woman collide, co-exist, argue, and survive, all in a relationship to the man in the story. Here, "the here and the now" come together or collide at times, and yet the constancy of nature keeps the beekeeper's wife grounded even though it is she who keeps the world of both her and the beekeeper grounded. Shanda Hansma Blue's debut book of poetry brings to us a captivating story that is relevant in our new world where nature and humankind are at war. This metaphoric telling of the story of the beekeeper's wife who keeps the beekeeper who keeps the bees will make you wonder and laugh at the same time. Hansma Blue's picturesque use of language will haunt you long after reading this book.-Patricia Jabbeh Wesley, author of Where the Road Turns-
The classification of the sciences
The classification of the sciences is an unchanged, high-quality reprint of the original edition of 1864. Hansebooks is editor of the literature on different topic areas such as research and science, travel and expeditions, cooking and nutrition, medicine, and other genres. As a publisher we focus on the preservation of historical literature. Many works of historical writers and scientists are available today as antiques only. Hansebooks newly publishes these books and contributes to the preservation of literature which has become rare and historical knowledge for the future.
Eye Spy
The book "" Eye Spy: Afield with Nature Among Flowers and Animate Things, has been considered important throughout the human history, and so that this work is never forgotten we have made efforts in its preservation by republishing this book in a modern format for present and future generations. This whole book has been reformatted, retyped and designed. These books are not made of scanned copies and hence the text is clear and readable.
The Face of the Fields
The book "" The Face of the Fields, has been considered important throughout the human history, and so that this work is never forgotten we have made efforts in its preservation by republishing this book in a modern format for present and future generations. This whole book has been reformatted, retyped and designed. These books are not made of scanned copies and hence the text is clear and readable.
The Factors of Organic Evolution
The book "" The Factors of Organic Evolution, has been considered important throughout the human history, and so that this work is never forgotten we have made efforts in its preservation by republishing this book in a modern format for present and future generations. This whole book has been reformatted, retyped and designed. These books are not made of scanned copies and hence the text is clear and readable.
An Expository Outline of the Vestiges of the Natural History of Creation
The book "" An Expository Outline of the ""Vestiges of the Natural History of Creation"", has been considered important throughout the human history, and so that this work is never forgotten we have made efforts in its preservation by republishing this book in a modern format for present and future generations. This whole book has been reformatted, retyped and designed. These books are not made of scanned copies and hence the text is clear and readable.
Gardening Without Irrigation
The book "" Gardening Without Irrigation: or without much, anyway, has been considered important throughout the human history, and so that this work is never forgotten we have made efforts in its preservation by republishing this book in a modern format for present and future generations. This whole book has been reformatted, retyped and designed. These books are not made of scanned copies and hence the text is clear and readable.
Science Wars
There is ample evidence that it is difficult for the general public to understand and internalize scientific facts. Disputes over such facts are often amplified amid political controversies. As we've seen with climate change and even COVID-19, politicians rely on the perceptions of their constituents when making decisions that impact public policy. So, how do we make sure that what the public understands is accurate? In this book, Steven L. Goldman traces the public's suspicion of scientific knowledge claims to a broad misunderstanding, reinforced by scientists themselves, of what it is that scientists know, how they know it, and how to act on the basis of it. In sixteen chapters, Goldman takes readers through the history of scientific knowledge from Plato and Aristotle, through the birth of modern science and its maturation, into a powerful force for social change to the present day. He explains how scientists have wrestled with their own understanding of what it is that they know, that theories evolve, and why the public misunderstands the reliability of scientific knowledge claims. With many examples drawn from the history of philosophy and science, the chapters illustrate an ongoing debate over how we know what we say we know and the relationship between knowledge and reality. Goldman covers a rich selection of ideas from the founders of modern science and John Locke's response to Newton's theories to Thomas Kuhn's re-interpretation of scientific knowledge and the Science Wars that followed it. Goldman relates these historical disputes to current issues, underlining the important role scientists play in explaining their own research to nonscientists and the effort nonscientists must make to incorporate science into public policies. A narrative exploration of scientific knowledge, Science Wars engages with the arguments of both sides by providing thoughtful scientific, philosophical, and historical discussions on every page.
Climate Change and Marine Geological Dynamics
The tendency for climate to change has been one of the most surprising outcomes of the study of Earth's history. Marine geoscience can reveal valuable information about past environments, climates, and biota just before, during and after each climate perturbation. Particularly, certain intervals of geological records are windows to key episodes in the climate history of the Earth-life system. Ιn this regard, the detailed analyses of such time intervals are challenging and rewarding for environmental reconstruction and climate modelling, because they provide documentation and better understanding of a warmer-than-present world, and opportunities to test and refine the predictive ability of climate models. Marine geological dynamics such as sea-level changes, hydrographic parameters, water quality, sedimentary cyclicity, and (paleo)climate are strongly related through a direct exchange between the oceanographic and atmospheric systems. The increasing attention paid to this wide topic is also motivated by the interplay of these processes across a variety of settings (coastal to open marine) and timescales (early Cenozoic to modern). In order to realize the full predictive value of these warm (fresh)/cold (salty) intervals in Earth's history, it is important to have reliable tools (e.g., integrated geochemical, paleontological and/or paleoceanographic proxies) through the application of multiple, independent, and novel techniques (e.g., TEX86, UK'37, Mg/Ca, Na/Ca, Δ47, and μCT) for providing reliablehydroclimate reconstructions at both local and global scales.
Innovative Materials and Methods for the Removal of Pollutants from the Environment
The progress of society has led to an improvement of the quality of life of a significant number of people. On the other hand, anthropogenic pollution dramatically increased, with serious consequences for the environment and human health. Controlling and remedying environmental pollution is one of the main challenges of our century. Fundamental and applicative research are called to collaborate, involving scientists in the development of realistic and effective systems for the prevention and the removal of pollutants from the environment. Spreading knowledge is among the missions ofresearchers and this is the aim of this book, offering an updated view on innovative materials and methods for pollutant treatment. It is composed of 18 articles, among them 5 reviews and 13 original articles, dedicated to new adsorbent materials (inorganic, organic, and hybrid materials) for the capture of pollutant species and for their catalytic conversion into non-toxic substances, and to bioremediation approaches to treat contaminated media. Water, air, and soil pollution was investigated, both at the lab and large scale, with special relevance for wastewater treatments for the removal of heavy metals and organic pollutants. We are grateful to "Molecules" for the opportunity to edit the Special Issue on "Innovative Materials and Methods for the Removal of Pollutants from the Environment". We created, for this book, an original cover image, dedicated to the efforts of chemistry to defend the beauty of environment, represented by flowers, against every prejudice that considers chemistry an enemy of life.
From Laboratory Studies to Court Evidence
In 2001, Benecke concluded a review on the history of forensic entomology with these optimistic words: "basic research and advanced application of forensic entomology (...)has opened the way to routine casework". At the same time, the TV show Crime Scene Investigation (CSI) largely brought forensic entomology to light. However, the show also cruelly pointed out its limits: After the team leader explained to his colleague how insectscan help determine the time of death, the team leader added "You've still got to convince a jury", to which the colleague promptly responded "On guns. It's got to be better than bugs. Less Latin." Indeed, several factors-including complexity, inherent limitations, and the rapid evolution of scientific knowledge-explain the slow acceptance of insect-based evidence. In this context, this Special Issue focuses on the articulation between laboratory studies and casework, a major challenge for the future of forensic entomology.
Artificial Intelligence Methods Applied to Urban Remote Sensing and GIS
This book is based on Special Issue "Artificial Intelligence Methods Applied to Urban Remote Sensing and GIS" from early 2020 to 2021. This book includes seven papers related to the application of artificial intelligence, machine learning and deep learning algorithms using remote sensing and GIS techniques in urban areas.
Machine Learning with Metaheuristic Algorithms for Sustainable Water Resources Management
The main aim of this book is to present various implementations of ML methods and metaheuristic algorithms to improve modelling and prediction hydrological and water resources phenomena having vital importance in water resource management.
Ecosystem Services, Green Infrastructure and Spatial Planning
National governments hardly identify their ecological networks or make an effort to integrate them into their spatial policies and plans. Under this perspective, an important scientific and technical issue is to focus on preserving corridors for enabling species mobility and on achieving connectivity between natural protected areas. This Special Issue takes a step forward insofar as it aims at proposing a theoretical and methodological discussion on the definition and implementation of ecological networks that provide a wide range of ecosystem services.
October 16
No detailed description available for "October 16".
Combinatorial Methods for String Processing
Strings, or sequences, are the most fundamental form of digital data. Due to recent developments in sensor network technologies and semi-automated machine-to- machine (M2M) communications, sequential data have been increasing more rapidly than ever. It is o5en the case that such semi-automatically generated sequential data contain abundant repetitive structures. Thus, understanding, revealing, and utilizing combinatorial objects that reside in strings are of great significance in designing efficient string processing algorithms and data structures. Typical topics of interests include (but are not limited to): - Combinatorial string problems and solutions; - Pattern matching algorithms; - Applied combinatorics on words; - Text compression; - Data structures for strings, labeled trees, and compressed text. This Special Issue contains five peer-reviewed papers.
Historical and Current Diversity Patterns of Mediterranean Marine Species
The Mediterranean Sea is a semi-enclosed basin which experienced different natural and anthropogenic phenomena causes of community or intra-species changes over time. The Mediterranean Sea went through dramatic changes in its biota through the last 6 million years and more quickly in the recent century. All the events left a footprint on the gene pool of marine species, on their morpho-anatomical features, and on the loss or expansion of the geographical range extent. Nowadays the Mediterranean basin is changing its physical and ecological characteristics. The changes in its environmentalconditions are followed by changes in its species composition and have been recorded in historical museum collections. In this book, the biodiversity in the Mediterranean Sea is described at a synchronic or diachronic level, highlighting the past two centuries for which museum collections can provide overlooked information.
Nature Abundant
A closer observation of nature allows us to use all of our senses, relax our overthinking brain and become more mindful. Mindfulness is living in the present moment; quieting thoughts of the past or future. Providing a sense of clarity, gratitude, and well being, a state of mindfulness can often be life-changing. This book explores symbolism in nature discovered through the author's personal experiences, a thirty year study of new thought principles and research of symbolism in nature throughout civilization. Additionally the author shares his own photography and complementary affirmations to help support your joyful journey to affirming your best life through nature.
Ants Diversity between Organic and Conventional Farm
Academic Paper from the year 2021 in the subject Environmental Sciences, grade: 100%, language: English, abstract: The diversity of ants in conventional and organic farms has not been investigated in Tanzania, therefore, the study aims at investigating that and provides knowledge for ants conservation. Machare Coffee Estate is among unique plantations in which both conventional and organic farming of coffee are performed. The study contributes to the existing body of knowledge on the influence of these farming practices on ants' diversity. Knowledge about ants diversity is useful for the conservation of other species which associate with ants in the ecological chain. Therefore from such a gap in knowledge, this study intends to compare the diversity of ants in organic and conventional farms. Moreover, the findings from this study will aid in biodiversity management and conservation in the area in particular. Ants play a vital-ecological role as they influence soil movement, nutrient cycling and water availability in their habitat. Habitat destruction and the use of Agrochemicals are regarded as among the factors that affect the diversity of ants. Machare Coffee Estate is one of the farms which practice both organic and conventional farming. To reveal whether there is a difference in diversity between these two practices this study was conducted at Machare Coffee Estate for three weeks. The study used four transects of 80 m with four quadrants of 10x10 m within it, where 6 pitfall traps with an inter pitfall distance of 3 m were laid down per quadrant on both sites. A total number of 96 pitfall traps were used per site. A total of 2381 ants from five subfamilies were collected. Ant's diversity was analyzed by the Shannon Wiener index and a t-test was used to test the hypothesis. Keywords; Ants, diversity, conventional farming, organic farming
Effects of agriculture on bees diversity in Mawingo, Mweka and Kilimanjaro National Park
Academic Paper from the year 2021 in the subject Environmental Sciences, language: English, abstract: The research will offer information on bees and the commencement of future actions on conservation of bees in Tanzania and the world at large. In order to provide good pollination service at high rate, Bee needs a favorable environment and or area that is free from agricultural products such as pesticides, fertilizers also free from diseases and trampling which will provide a pollination service that is effective. In addition the environment should not be overly cost for bee diversity. Increase in human population has led to the high demand for food; the high demand for food by human has led to the ongoing increase in farm size with specialization leading to the reduction of natural vegetation areas for food production. If the agricultural areas will continue to be treated with pesticides and fertilizers, farmers will be wasting their time because the bee diversity will keep on declining and later on the pollination service will be poorly performed that will result to poor productivity of crops. Also bees suffering can lead to a total disappearance of bees hence lack pollination services completely. Keywords: Agriculture, Diversity, Biodiversity, pollinators, Intensive
The Oberland and its glaciers
The Oberland and its glaciers - Explored and illustrated with ice-axe and camera is an unchanged, high-quality reprint of the original edition of 1866. Hansebooks is editor of the literature on different topic areas such as research and science, travel and expeditions, cooking and nutrition, medicine, and other genres. As a publisher we focus on the preservation of historical literature. Many works of historical writers and scientists are available today as antiques only. Hansebooks newly publishes these books and contributes to the preservation of literature which has become rare and historical knowledge for the future.
At Speed of Gravity
At Speed of Gravity: Pouring Universe Theory details a cosmological theory of the Universe based on physical properties of gravity expressed through mathematics.About the Author Mikhail Vlasov is an engineer living and working in California. He considers physics his "PhD hobby," and he also enjoys music composing.
The gold fields of St. Domingo
The gold fields of St. Domingo - With a description of the agricultural, commercial and other is an unchanged, high-quality reprint of the original edition of 1860. Hansebooks is editor of the literature on different topic areas such as research and science, travel and expeditions, cooking and nutrition, medicine, and other genres. As a publisher we focus on the preservation of historical literature. Many works of historical writers and scientists are available today as antiques only. Hansebooks newly publishes these books and contributes to the preservation of literature which has become rare and historical knowledge for the future.
Genetic Resources and Adaptive Management of Conifers in a Changing World
Climatic change causes a mismatch between tree populations on sites they currently occupy and the climate to which they have adapted in the past. The maintenance of productivity and of ecological and societal services requires resilient populations and ecosystems, particularly close to the vulnerable trailing (xeric) range limits. The studies confirm the selective effect of diverse habitat/climate conditions across the species ranges. Soil conditions may mask climate effects and should be considered separately. The unique potential of provenance tests is illustrated by growth response projections that may be less dramatic than provided by usual inventory data analyses. Assisted migration appears to be a feasible management action to compensate for climatic warming. However, the choice of populations needs special care under extreme conditions and outside the limits of current natural distribution ranges. The proper differentiation of measures according to the present and future adaptive challenges require the continuation of long-term analyses and the establishment of better focused field trials in disparate climates that contain populations from a representative range of habitats. The studies present results obtained from diverse regions of the temperate forest zone, from Central and Northwestern Europe, the Mediterranean, Russia, China, North and Central America.
Graphene-Polymer Composites II
Graphene-polymer nanocomposites continue to gain interest in diverse scientific and technological fields. Graphene-based nanomaterials present the advantages of other carbon nanofillers, like electrical and thermal conductivity, while having significantly lower production costs when compared to materials such as carbon nanotubes, for instance. In addition, in the oxidized forms of graphene, the large specific area combined with a large quantity of functionalizable chemical groups available for physical or chemical interaction with polymers, allow for good dispersion and tunable binding withthe surrounding matrix. Other features are noteworthy in graphene-based nanomaterials, like their generally good biocompatibility and the ability to absorb near-infrared radiation, allowing for the use in biomedical applications, such as drug delivery and photothermal therapy.This Special Issue provides an encompassing view on the state of the art of graphenepolymer composites, showing how current research is dealing with new and exciting challenges. The published papers cover topics ranging from novel production methods and insights on mechanisms of mechanical reinforcement of composites, to applications as diverse as automotive and aeronautics, cancer treatment, anticorrosive coatings, thermally conductive fabrics and foams, and oil-adsorbent aerogels.
Urban Ecosystem Services II
The school of thought surrounding the urban ecosystem has increasingly become in vogue among researchers worldwide. Since half of the world's population lives in cities, urban ecosystem services have become essential to human health and wellbeing. Rapid urban growth has forced sustainable urban developers to rethink important steps by updating and, to some degree, recreating the human-ecosystem service linkage.Assessing as well as estimating the losses of ecosystem services can denote the essential effects of urbanization and increasingly indicate where cities fall short. This second book on urban ecosystem services contains 11 thoroughly refereed contributions published within the Special Issue "Urban Ecosystem Services II: Toward a Sustainable Future". The book addresses topics such as cultural ecosystem services, green infrastructure, urban trees, urban green spaces, and more. The contributions highlight current knowledge, gaps, and future research with the focus on building a sustainable future.
Natural Environment and Cultural Heritage in the City, A Sustainability Perspective
This Special Issue contains a compilation of research papers focusing on the following: - Natural and cultural heritage covering conservation activities in urban and suburban zones, urbanscape, and heritage relationships; - Ecological solutions in urban development and management; - Urban and land use planning, urban composition, and the impact of historical conditions on modern city development; and - Gardens and parks, their maintenance and use, and the ecosystem services served.
Transport and Diffusion in Quantum Complex Systems
This Special Issue presents contributions from leading experts working in different branches of quantum physics. The relevance of quantum transport and diffusion processes at both a fundamental and technological level is well highlighted by the variety of applications discussed. Fundamental problems, such as the description of the evolution of open quantum systems, can be explored in terms of excitation transport in suitable structures, whereas the motion of particles on a graph can provide information on the graph itself, thus becoming a metrological resource. Quantum information transfer and routing protocols are instead representative of the class of quantum transport problems that have direct application to quantum technologies. The contributions to this book offer therefore a variety of different perspectives on quantum transport and diffusion processes, and allow to fully appreciate the centrality of the topic in the realm of quantum physics and fast developing quantum technologies.
Soil Management for Sustainability
With 17 papers and authors from Canada, China, the Czech Republic, Germany, Greece, Italy, Nigeria, South Africa, Sweden, Tanzania, Thailand, and the United States of America, the response to this Special Issue was excellent.A set of papers addressed soil carbon and nutrient content evaluation. Livsey et al. assessed the effects of irrigation and fertilization in low-intensity and high-intensity commercial production systems on the SOC, total N and total P concentrations and stocks. Seboko et al. characterized SOC stocks in a highly urbanized and contaminated area in Johannesburg city. Qin et al. studied a natural forest and banana plantations with different cultivation ages in subtropical China, to evaluate the supply capacity of inorganic N through the gross mineralization and nitrification rates. Xie et al. assessed the effect of different soil reclamation treatments on soil nutrient contents, pools, and their stoichiometric ratios in a coastal tidal land. Mikhailova et al. estimated the value of regulating ES from soil organic carbon, as well as the dependance of ES on soil diversity/pedodiversity. Other papers studied soil water infiltration as affected by soil water retention characteristics with estimation methods (An et al.), soil functionality and biodiversity following the establishment of new vineyards (Gagnarli et al.), a review of soil protection in floodplains (El Hourani and Broll) and the reclamation of mining sites (Omari et al.). Different approaches of geospatial modeling and predictive mapping were presented. Bascietto et al. coupled the normalized difference vegetation index with different soil physical/chemical parameters, to identify the properties linked to within-field variability in productivity. John et al. used different machine learning algorithms and 21 auxiliary data, including soil nutrient indicators, for SOC prediction in a flat alluvial soil. Kairis et al. applied and compared two soil mapping methodologies, to provide a more accurate soil description for sustainable land-use management. Liu et al. explored the effects of households' land-use behaviors on soil K from spatial and temporal perspectives. Piccini et al. provided a regional spatial evaluation of SOC, soil texture, and SOM levels based on the soil texture from point data. Wu et al. evaluated soil quality in the dry season with regard to soil-quality improvement in the rainy season according to the spatial distributions of soil nutrient indicators. Zhao et al. conducted a multi-functional evaluation of soil, assessing the primary productivity, provision and cycling of nutrients, provision of functional and intrinsic biodiversity, water purification and regulation, carbon sequestration and regulation of cultivated land.
80 Years of Professor Wigner’s Seminal Work On Unitary Representations of the Inhomogeneous Lorentz Group
This book celebrates the 80 years of the Professor Eugene P. Wigner paper "On Unitary Representations of the Inhomogeneous Lorentz Group", published in The Annals of Mathematics in 1939. We have collected several contributions divided into Research articles and Reviews. All contributions are technical, but the papers also bring a health element of didactic. Practitioners from several areas, from Gravity to Quantum Field Theory and Quantum Mechanics, as well as students, shall find a rich material in this Volume.
Coastal Fish Research
This book is a collection of a series of articles on several aspects of coastal fish biology and ecology. Coastal fish are key components of marine ecosystems, and the aim of this book is to present relevant research on these wonderful animals and to provide insights for future research in this field.
Spacetime
The development of physics is an ongoing process. Thinking that today's models of micro and macro cosmos are final truth is an utter mistake. If it would be so, relativity theory, quantum physics, and electrodynamics would be parts of the bigger general picture. Still today main physical theories are not fully compatible. In order to develop physics where these partial pictures fully merge into a general picture, the bijective research methodology was developed where every element in the model has exactly one correspondent model in the physical reality. Bijectivity reconciles partial models in a new picture where everything fits together. In this new picture, universal space is time-invariant and the universe is non-created and in permanent dynamic equilibrium. Black holes are rejuvenating systems of the universe that has no beginning and will not have an end. With this book, the Big Bang theory belongs to the history of physics.
Man Before Metals
Man Before Metals - the International Scientific Series, Vol. 44 is an unchanged, high-quality reprint of the original edition of 1883. Hansebooks is editor of the literature on different topic areas such as research and science, travel and expeditions, cooking and nutrition, medicine, and other genres. As a publisher we focus on the preservation of historical literature. Many works of historical writers and scientists are available today as antiques only. Hansebooks newly publishes these books and contributes to the preservation of literature which has become rare and historical knowledge for the future.
The Story of Primitive Man
The Story of Primitive Man is an unchanged, high-quality reprint of the original edition of 1895. Hansebooks is editor of the literature on different topic areas such as research and science, travel and expeditions, cooking and nutrition, medicine, and other genres. As a publisher we focus on the preservation of historical literature. Many works of historical writers and scientists are available today as antiques only. Hansebooks newly publishes these books and contributes to the preservation of literature which has become rare and historical knowledge for the future.
Impact of Natural Hazards on Forest Ecosystems and Their Surrounding Landscape under Climate Change
In recent decades, the increasing frequency of natural hazards has impacted forest ecosystems and their surroundings. It is because of climate change that the dynamics of the ecosystem structure, feedbacks, and relationships are changing. These structural changes are too complicated and complex to be entirely, or at least satisfactorily, explained. However, it is possible to explain at least some of these interconnections. Water is the primary transport medium for energy and material fluxes in ecosystems, and, therefore, it is a common denominator of the complex interconnections between their partial components.Consequently, we paid attention to water as the primary agent driving the impact of natural hazards in forest ecosystems and their surroundings. Water scarcity causes drought, and its surplus causes flood, respectively. Additionally, it is also necessary to understand temporal distribution patterns of water in a warmer climate and ecophysiological consequences in forest structures. Thus, we decided to prepare a book in which contributors of the articles tried to explain some water-related examples of natural hazard impacts on the forest and the surrounding ecosystem.
Advances in the Biology of Phototrophic Bacteria
The application of genomic, transcriptomic, and proteomic analyses brings new dimensions to our understanding of the biology of phototrophic bacteria. Comparing gene sequences of photosynthetic reaction center proteins and a key enzyme of bacteriochlorophyll biosynthesis from more than 150 genomes demonstrates the ancient roots of phototrophic bacteria. The presence and phylogeny of biosynthetic pathways of the compatible solutes ectoine and glycine betaine define groups of marine and halophilic phototrophic bacteria. The wide range of ecological niches conquered during evolution is demonstrated by the adaptation of cyanobacterial genera Scytonema, Tolypothrix, and Nostoc to different temperature ranges and the adaptation of Heliorestis species to alkaline habitats. Differences between phototrophic purple bacteria from marine and freshwater habitats are reflected in the preference for sulfidic and non-sulfidic niches. Also, a high proportion of siderophore producers was found among isolates from freshwater sources opposed to those from salty habitats . The primary colonization of carbonate rocks by a group of novel endolithic cyanobacteria and the following successions were studied over 9 months. The genomic characterization of the aerobic Dinoroseobacter strain AAP5, the strictly anaerobic and syntrophic Prosthecochloris ethylica, and the strictly anaerobic Heliorestis convoluta is reported. Significant differences in relation to oxygen are reflected in oxygen production by some species, oxygen tolerance over a wide range of concentrations, and the use of oxygen for energy generation or a strictly anaerobic lifestyle. Relations to oxygen are highlighted in papers on photooxidative stress, regulation of iron-sulfur cluster formation, and interactions of redox regulators. In situ metatranscriptomic and proteomic studies demonstrate the high metabolic flexibility of Chloroflexus aggregans in a hot spring microbial mat and show its adaptation to the changing conditions over day and night periods by a well-coordinated regulation of key metabolic processes for both phototrophic and chemotrophic growth.
