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  • 1
    Call number: AWI Bio-24-95736
    Description / Table of Contents: Moss-microbe associations are often characterised by syntrophic interactions between the microorganisms and their hosts, but the structure of the microbial consortia and their role in peatland development remain unknown. In order to study microbial communities of dominant peatland mosses, Sphagnum and brown mosses, and the respective environmental drivers, four study sites representing different successional stages of natural northern peatlands were chosen on a large geographical scale: two brown moss-dominated, circumneutral peatlands from the Arctic and two Sphagnum-dominated, acidic peat bogs from subarctic and temperate zones. The family Acetobacteraceae represented the dominant bacterial taxon of Sphagnum mosses from various geographical origins and displayed an integral part of the moss core community. This core community was shared among all investigated bryophytes and consisted of few but highly abundant prokaryotes, of which many appear as endophytes of Sphagnum mosses. Moreover, brown mosses and Sphagnum mosses represent habitats for archaea which were not studied in association with peatland mosses so far. Euryarchaeota that are capable of methane production (methanogens) displayed the majority of the moss-associated archaeal communities. Moss-associated methanogenesis was detected for the first time, but it was mostly negligible under laboratory conditions. Contrarily, substantial moss-associated methane oxidation was measured on both, brown mosses and Sphagnum mosses, supporting that methanotrophic bacteria as part of the moss microbiome may contribute to the reduction of methane emissions from pristine and rewetted peatlands of the northern hemisphere. Among the investigated abiotic and biotic environmental parameters, the peatland type and the host moss taxon were identified to have a major impact on the structure of moss-associated bacterial communities, contrarily to archaeal communities whose structures were similar among the investigated bryophytes. For the first time it was shown that different bog development stages harbour distinct bacterial communities, while at the same time a small core community is shared among all investigated bryophytes independent of geography and peatland type. The present thesis displays the first large-scale, systematic assessment of bacterial and archaeal communities associated both with brown mosses and Sphagnum mosses. It suggests that some host-specific moss taxa have the potential to play a key role in host moss establishment and peatland development.
    Description / Table of Contents: Während die Beziehungen zwischen Moosen und den mit ihnen assoziierten Mikroorganismen oft durch syntrophische Wechselwirkungen charakterisiert sind, ist die Struktur der Moos-assoziierten mikrobiellen Gemeinschaften sowie deren Rolle bei der Entstehung von Mooren weitgehend unbekannt. Die vorliegende Arbeit befasst sich mit mikrobiellen Gemeinschaften, die mit Moosen nördlicher, naturnaher Moore assoziiert sind, sowie mit den Umweltfaktoren, die sie beeinflussen. Entlang eines groß angelegten geographischen Gradienten, der von der Hocharktis bis zur gemäßigten Klimazone reicht, wurden vier naturbelassene Moore als Probenstandorte ausgesucht, die stellvertretend für verschiedene Stadien der Moorentwicklung stehen: zwei Braunmoos-dominierte Niedermoore mit nahezu neutralem pH-Wert sowie zwei Sphagnum-dominierte Torfmoore mit saurem pH-Wert. Die Ergebnisse der vorliegenden Arbeit machen deutlich, dass die zu den Bakterien zählenden Acetobacteraceae das vorherrschende mikrobielle Taxon der Sphagnum-Moose gleich welchen geographischen Ursprungs darstellen und insbesondere innerhalb des Wirtsmoosgewebes dominieren. Gleichzeitig gehörten die Acetobacteraceae zum wesentlichen Bestandteil der mikrobiellen Kerngemeinschaft aller untersuchten Moose, die sich aus einigen wenigen Arten, dafür zahlreich vorkommenden Prokaryoten zusammensetzt. Die vorliegende Arbeit zeigt zudem erstmals, dass sowohl Braunmoose als auch Torfmoose ein Habitat für Archaeen darstellen. Die Mehrheit der Moos-assoziierten Archaeen gehörte dabei zu den methanbildenden Gruppen, wenngleich die metabolischen Aktivitätsraten unter Laborbedingungen meistens kaum messbar waren. Im Gegensatz hierzu konnte die Bakterien-vermittelte Methanoxidation sowohl an Braunmoosen als auch an Sphagnum-Moosen gemessen werden. Dies zeigt eindrucksvoll, dass Moos-assoziierte Bakterien potenziell zur Minderung von Methanemissionen aus nördlichen, aber auch wiedervernässten Mooren beitragen können. Ein weiteres wichtiges Resultat der vorliegenden Arbeit ist die Bedeutung des Moortyps (Niedermoor oder Torfmoor), aber auch der Wirtsmoosart selbst für die Struktur der Moos-assoziierten Bakteriengemeinschaften, während die archaeellen Gemeinschaftsstrukturen weder vom Moortyp noch von der Wirtsmoosart beeinflusst wurden und sich insgesamt deutlich ähnlicher waren als die der Bakterien. Darüber hinaus konnte erstmalig gezeigt werden, dass sich die bakteriellen Gemeinschaften innerhalb der unterschiedlichen Moorsukzessionsstadien zwar ganz erheblich voneinander unterscheiden, ein kleiner Teil der Bakterien dennoch Kerngemeinschaften bilden, die mit allen untersuchten Moosarten assoziiert waren. Bei der hier präsentierten Arbeit handelt es sich um die erste systematische Studie, die sich auf einer großen geographischen Skala mit den bakteriellen und archaeellen Gemeinschaften von Braunmoosen und Torfmoosen aus naturbelassenen nördlichen Mooren befasst. Die vorliegenden Ergebnisse machen deutlich, dass die untersuchten Moose ein ganz spezifisches mikrobielles Konsortium beherbergen, welches mutmaßlich eine Schlüsselrolle bei der Etablierung der Wirtspflanzen am Anfang der Moorentwicklung spielt und darüber hinaus das Potential hat, die charakteristischen Eigenschaften von Mooren sowie deren weitere Entwicklung zu prägen.
    Type of Medium: Dissertations
    Pages: XX, 139, liv Seiten , Illustrationen, Diagramme
    Language: English
    Note: Dissertation, Universität Potsdam, 2024 , Content Preface Acknowledgements Summary Zusammenfassung Abbreviations 1. Introduction 1.1. Peatlands 1.1.1. Peatland development and peat bog succession 1.1.2. Characteristic peatlands of the northern hemisphere 1.1.3. Anthropogenic threats of northern peatlands 1.1.4. Peat bog restoration 1.2. Peatland bryophytes 1.2.1. Brown mosses 1.2.2. Sphagnum mosses 1.3. Moss microbiota 1.3.1. Moss-associated bacteria 1.3.2. Moss-associated archaea 1.3.3. Endophytic prokaryotic communities 1.4. Biotic and abiotic influences on moss-associated microorganisms 1.5. Objectives 1.6. Study sites 1.6.1. High Arctic peatlands of Svalbard (SV) 1.6.2. Polygonal Tundra of Samoylov (SA) 1.6.3. Palsa Bogs of Neiden (NEI) 1.6.4. Kettle Bog Peatlands of Mueritz National Park (MUE) 2. Material and Methods 2.1. Sampling scheme overview 2.2. Sampling of pore water 2.3. Sampling of moss plantlets 2.4. Analysis of pore water chemistry 2.5. Cell wall analysis 2.5.1. Cation exchange capacity (CEC) 2.5.2. Holocellulose (HC) 2.5.3. Lignin and Lignin-like polymers (LLP) 2.5.4. Bulk moss litter analysis 2.6. Moss surface sterilisation and separation of putative epiphytic and endophytic microbial communities 2.7. DNA extraction and sequencing 2.8. Sequence analyses and bioinformatics 2.9. Statistical analyses 2.10. Potential methane production and oxidation assays 2.10.1. Surface sterilisation prior to activity tests 2.10.2. Methane production 2.10.3. Methane oxidation 3. Results 3.1. Peatland bulk and pore water characteristics 3.2. Diversity and structure of natural peatland microbial communities 3.3. Environmental drivers of moss-associated microbial communities 3.4. Microbial taxa associated with brown mosses and Sphagnum mosses 3.4.1. Moss-associated bacteria 3.4.2. Moss-associated archaea 3.4.3. Bacterial and archaeal core communities 3.4.4. Acetobacteraceae as dominant taxon of the bacterial core community 3.5. Sphagnum bacteriomes of disturbed, rewetted and pristine temperate kettle bog 3.6. Potential moss-associated methane production and methane oxidation rates 3.6.1. Moss-associated methane production 3.6.2. Moss-associated methane oxidation 4. Discussion 4.1. Environmental influences on moss-associated bacterial communities 4.2. Moss-associated archaeal communities and their environmental drivers 4.3. Distinct patterns of endophytic bacteria 4.4. The core microbiota and their possible role for peatland succession 4.5. The potential role of Acetobacteraceae for Sphagnum host mosses and bog ecosystems 4.6. Moss-associated microbial communities of the methane cycle and their potential metabolic activity 4.7. Diversity and structure of Sphagnum bacteriomes from pristine, disturbed and rewetted kettle bogs 5. Conclusion 6. Critical remarks and outlook 6.1. Critical remarks 6.2. Outlook Bibliography Supplementary
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 2
    Call number: M 24.95594
    Type of Medium: Monograph available for loan
    Pages: 302 Seiten , Illustrationen
    ISBN: 978-3-934027-27-5 , 9783934027275
    ISSN: 1437-3246
    Series Statement: Kölner Forum für Geologie und Paläontologie 24/2019
    Language: English
    Note: Contents Preface / H.-G. Herbig, M. Aretz, M.R.W. Amler & S. Hartenfels Field trip Al: The Uppermost Devonian and Lower Carboniferous in the type area of Southern Belgium / J. Denayer, C. Prestianni, B. Mottequin & E. POTY Field Trip A2: The Pennsylvanian of the Ruhr Basin and Osnabruck region, western Germany - facies, stratigraphy, and tectonics of a paralic foreland basin of the Variscides / V. Wrede, G. Drozdzewski, D. Juch, A. Leipner & M. Sowiak Field Trip A3: The classical Central European Permian: Continental "Rotliegend", marine "Zechstein", and the Permian-Triassic Transition in Germany / J. Schneider, T. Wotte, B. Gaitzsch, R. Werneburg, S. Zeibig & F. Scholze Field Trip Cl: The Mississippian Kulm Basin of the Rhenish Mountains, western Germany - fauna, facies, and stratigraphy of a mixed carbonate-siliciclastic foreland basin / H.-G. Herbig, D. Korn, M.R.W. Amler, S. Hartenfels & H. Jäger Field Trip C2: Pennsylvanian-Permian of the Saar-Nahe Basin, SW Germany / S. Voigt, T. Schindler, H. Thum & J. Fischer Field Trip C3: The Pennsylvanian-Permian of the Southern Alps (Carnic Alps/Karavanke Mts.), Austria/ Italy/Slovenia - fauna, facies and stratigraphy of a mixed carbonate- siliciclastic shallow marine platform along the northwestern Palaeotethys margin / M. Novak, H.C. Forke & H.P. Schönlaub
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 3
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    Language Science Press
    Publication Date: 2024-05-15
    Description: The papers in this volume were presented at the 47th Annual Conference on African Linguistics at UC Berkeley in 2016. The papers offer new descriptions of African languages and propose novel theoretical analyses of them. The contributions span topics in phonetics, phonology, syntax, semantics, and pragmatics and reflect the typological and genetic diversity of languages in Africa. Four papers in the volume examine Areal Features and Linguistic Reconstruction in Africa, and were presented at a special workshop on this topic held alongside the general session of ACAL.
    Keywords: Linguistics ; thema EDItEUR::C Language and Linguistics::CF Linguistics
    Language: English
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  • 4
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    Finnish Literature Society / SKS | Finnish Literature Society
    Publication Date: 2024-05-15
    Description: This study offers a new perspective on unusual and unsettling experiences that are often interpreted as “mental illnesses” and on the techniques through which literary representations invite readerly responses and engagement. The book examines how four Finnish modernist writers, Helvi Hämäläinen, Jorma Korpela, Timo K. Mukka, and Maria Vaara, construct experiences of shattering and distress as bodily experiences that are embedded in the social and material world and entangled with social and cultural norms that govern subjectivity, gender, and sexuality. Drawing on narrative theory, theories of embodied cognition, phenomenology of illness, and feminist theory, the analyses show how literary works can invite readers to respond emotionally and to reflect on our views of the human mind and its interaction with the world. The book sheds light on the fictional portrayals and techniques of representation and on the ethics of narrating and reading about painful experiences. It also illuminates the ways the mind, body, consciousness, and mental distress are discussed in Finnish modernist literature and situates the texts in the international modernist tradition.
    Keywords: phenomenology; narratology; modernism; mental disorders; Finnish language literature; literary research ; thema EDItEUR::D Biography, Literature and Literary studies ; thema EDItEUR::L Law::LN Laws of specific jurisdictions and specific areas of law::LNT Social law and Medical law::LNTM Medical and healthcare law
    Language: English
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  • 5
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    University of Michigan Press
    Publication Date: 2024-05-15
    Description: World of Warcraft rapidly became one of the most popular online world games on the planet, amassing 11.5 million subscribers—officially making it an online community of gamers that had more inhabitants than the state of Ohio and was almost twice as populous as Scotland. It's a massively multiplayer online game, or MMO in gamer jargon, where each person controls a single character inside a virtual world, interacting with other people's characters and computer-controlled monsters, quest-givers, and merchants. In My Life as a Night Elf Priest, Bonnie Nardi, a well-known ethnographer who has published extensively on how theories of what we do intersect with how we adopt and use technology, compiles more than three years of participatory research in Warcraft play and culture in the United States and China into this field study of player behavior and activity. She introduces us to her research strategy and the history, structure, and culture of Warcraft; argues for applying activity theory and theories of aesthetic experience to the study of gaming and play; and educates us on issues of gender, culture, and addiction as part of the play experience. Nardi paints a compelling portrait of what drives online gamers both in this country and in China, where she spent a month studying players in Internet cafes. Bonnie Nardi has given us a fresh look not only at World of Warcraft but at the field of game studies as a whole. One of the first in-depth studies of a game that has become an icon of digital culture, My Life as a Night Elf Priest will capture the interest of both the gamer and the ethnographer.
    Keywords: Media ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHM Anthropology::JHMC Social and cultural anthropology ; thema EDItEUR::U Computing and Information Technology::UD Digital Lifestyle and online world: consumer and user guides::UDB Internet guides and online services::UDBV Virtual worlds ; thema EDItEUR::W Lifestyle, Hobbies and Leisure::WD Hobbies, quizzes and games::WDH Hobbies::WDHW Role-playing, war games and fantasy sports
    Language: English
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  • 6
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    University of Westminster Press
    Publication Date: 2024-05-15
    Description: In 1965 the UK enacted the Race Relations Act while the International Convention on the Elimination of all Forms of Racial Discrimination (ICERD) opened for signature and ratification. In the US, the changes that brought down the walls of segregation, conveying some equality to black people essentially began with the Civil Rights Act of 1964. These ground-breaking instruments marked a commitment—domestically and internationally by the state parties to the ICERD—to address racial injustice and inequality through legal means. Yet, the intervening years reveal the challenges of pursuing racial justice and equality through the medium of law. In recent years, allegations of institutional racism have been levelled against numerous public institutions in the UK, while the rise of populism globally has challenged the ability of law to effect change. This edited collection draws attention to the need to reflect on the persistence of racial inequalities and injustices despite law’s intervention and arguably because of its ‘unconscious’ role in their promotion. It does so from a multiplicity of perspectives ranging from the doctrinal, socio-legal, critical and theoretical, thereby generating different kinds of knowledge about race and law. By exploring contemporary issues in racial justice and equality, contributors examine the role of law—whether domestic or international, hard or soft—in advancing racial equality and justice and consider whether it can effect substantive change.
    Keywords: Immigration; Stop and Search Laws; Terrorism Funds; The International Convention on the Elimination of All Forms of Racial Discrimination; Legal Academia; Legal Profession; Equality; Race; Law ; thema EDItEUR::L Law ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHB Sociology
    Language: English
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  • 7
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    University of Washington Press | University of Washington Press
    Publication Date: 2024-05-15
    Description: Open-access edition: DOI 10.6069/9780295804088 China's exploitation by Western imperialism is well known, but the imperialist treatment within China of ethnic minorities has been little explored. Around the geographic periphery of China, as well as some of the less accessible parts of the interior, and even in its cities, live a variety of peoples of different origins, languages, ecological adaptations, and cultures. These people have interacted for centuries with the Han Chinese majority, with other minority ethnic groups (minzu), and with non-Chinese, but identification of distinct groups and analysis of their history and relationship to others still are problematic. Cultural Encounters on China's Ethnic Frontiers provides rich material for the comparative study of colonialism and imperialism and for the study of Chinese nation-building. It represents some of the first scholarship on ethnic minorities in China based on direct research since before World War II. This, combined with increasing awareness in the West of the importance of ethnic relations, makes it an especially timely book. It will be of interest to anthopologists, historians, and political scientists, as well as to sinologists.
    Keywords: Social and cultural anthropology
    Language: English
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  • 8
    Publication Date: 2024-05-15
    Description: The 43rd UID conference, held in Genova, takes up the theme of ‘Dialogues’ as practice and debate on many fundamental topics in our social life, especially in these complex and not yet resolved times. The city of Genova offers the opportunity to ponder on the value of comparison and on the possibilities for the community, naturally focused on the aspects that concern us, as professors, researchers, disseminators of knowledge, or on all the possibile meanings of the discipline of representation and its dialogue with ‘others’, which we have broadly catalogued in three macro areas: History, Semiotics, Science / Technology. Therefore, “dialogue” as a profitable exchange based on a common language, without which it is impossible to comprehend and understand one another; and the graphic sign that connotes the conference is the precise transcription of this concept: the title ‘translated’ into signs, derived from the visual alphabet designed for the visual identity of the UID since 2017. There are many topics which refer to three macro sessions: - Witnessing (signs and history) - Communicating (signs and semiotics) - Experimenting (signs and sciences) Thanks to the different points of view, an exceptional resource of our disciplinary area, we want to try to outline the prevailing theoretical-operational synergies, the collaborative lines of an instrumental nature, the recent updates of the repertoires of images that attest and nourish the relations among representation, history, semiotics, sciences.
    Keywords: Discipline of representation, History, Semiotics, Science, Technology ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GT Interdisciplinary studies::GTD Semiotics / semiology ; thema EDItEUR::N History and Archaeology::NH History ; thema EDItEUR::P Mathematics and Science::PD Science: general issues::PDR Impact of science and technology on society
    Language: Italian , English
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  • 9
    Publication Date: 2024-05-15
    Description: Learn how to facilitate scientific inquiry projects by getting out of the classroom and connecting to the natural environment—in your schoolyard, or in your community! Providing a contemporary perspective on how to do scientific inquiry in ways that can make teachers’ lives easier and students’ experiences better, this book draws on authentic inquiry, engaging with communities, and teaching through project-based learning to help students design and carry out scientific inquiry projects that are grounded in their local places. This accessible guide will help you to develop skills around facilitation, team building, and learning outdoors in schoolyards and parks, acting as a go-to toolkit for teachers to help build confidence and skills in these areas. Written according to the Next Generation Science Standards, this book supports teachers in fostering community engagement and a justice-first classroom. The approachable resources included in this book will help teachers with all levels of experience succeed in empowering students grades 3–12 in their science learning. Additional support materials including template documents for student use and for teacher planning, as well as examples of real student work, are available online. The Open Access version of this book, available at www.taylorfrancis.com, has been made available under a Creative Commons Attribution (CC-BY) 4.0 license
    Keywords: climate change ; instructional strategies ; NGSS ; outdoor education ; Science education ; teaching strategies
    Language: English
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  • 10
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    Edinburgh University Press
    Publication Date: 2024-05-15
    Description: This book traces the origins, history, and memory of the Jalayirid dynasty, a family that succeeded the Mongol Ilkhans in Iran and Iraq in the 14th and early 15th centuries. The story of how the Jalayirids came to power is illustrative of the political dynamics that shaped much of the Mongol and post-Mongol period in the Middle East. The Jalayirid sultans sought to preserve the social and political order of the Ilkhanate, while claiming that they were the rightful heirs to the rulership of that order. Central to the Jalayirids' claims to the legacy of the Ilkhanate was their attempt to control the Ilkhanid heartland of Azarbayjan and its major city, Tabriz. Control of Azarbayjan meant control of a network of long-distance trade between China and the Latin West, which continued to be a source of economic prosperity through the 8th/14th century.
    Keywords: History ; Azerbaijan (Iran) ; Baghdad ; Emir ; Genghis Khan ; Ilkhanate ; Jalairid Sultanate ; Jalairs ; Sultan ; Tabriz ; thema EDItEUR::N History and Archaeology::NH History::NHG Middle Eastern history
    Language: English
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