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Evolutionary Biology and Ecology of Ostracoda
Ostracoda (Crustacea) are potentially excellent model organisms for evolutionary studies, because they combine an extensive fossil record with a wide recent distribution and therefore allow studies on both patterns and processes leading to extant diversity. The main scientific domains contributing theories, concepts, and data to evolutionary biology are morphology (including ontogeny), palaeontology, genetics, and ecology, and to all of these aspects ostracods can contribute. This is clearly illustrated by the fifteen papers presented under Theme 3 of the 13th International Symposium on Ostracoda (Chatham, UK) in 1997 which are grouped in the present proceedings, one of three volumes resulting from this meeting. The contributions deal with the evolution of both extant and fossil forms (including most of the Phanaerozoic), ecology of both marine and freshwater taxa, and (developmental) morphology of both soft parts and valves. Although the canvas is wide, each paper clearly shows how studies on Ostracoda can be relevant to general theory on evolutionary biology and ecology.
Recombination and Meiosis
Once per life cycle, mitotic nuclear divisions are replaced by meiosis I and II – reducing chromosome number from the diploid level to a haploid genome and recombining chromosome arms by crossing-over. In animals, all this happens during formation of eggs and sperm – in yeasts before spore formation. The mechanisms of reciprocal exchange at crossover/chiasma sites are central to mainstream meiosis. To initiate the meiotic exchange of DNA, surgical cuts are made as a form of calculated damage that subsequently is repaired by homologous recombination. These key events are accompanied by ancillary provisions at the level of chromatin organization, sister chromatid cohesion and differential ...
Thorp and Covich's Freshwater Invertebrates
Readers familiar with the first three editions of Ecology and Classification of North American Freshwater Invertebrates (edited by J.H. Thorp and A.P. Covich) will welcome the comprehensive revision and expansion of that trusted professional reference manual and educational textbook from a single North American tome into a developing multi-volume series covering inland water invertebrates of the world. The series entitled Thorp and Covich's Freshwater Invertebrates (edited by J.H. Thorp) begins with the current Volume I: Ecology and General Biology (edited by J.H. Thorp and D.C. Rogers), which is designed as a companion volume for the remaining books in the series. Those following volumes pr...
Exploring Parthenogenesis: Unveiling the Secrets of Reproduction Without Fertilization
Explore the fascinating world of asexual reproduction with 'Exploring Parthenogenesis: Unveiling the Secrets of Reproduction Without Fertilization.' This comprehensive eBook delves into the scientific principles and cellular mechanisms behind parthenogenesis, where offspring are produced without fertilization. Discover how this unique reproductive strategy operates across various species, including insects, reptiles, amphibians, fish, and even plants. Learn about notable case studies, such as the rapid reproduction of aphids, the isolated reproduction of Komodo dragons, and rare instances in mammals like the Turkish Van cat. Understand the advantages of parthenogenesis, such as rapid populat...
Ostracoda as Proxies for Quaternary Climate Change
Ostracod crustaceans, common microfossils in marine and freshwater sedimentary records, supply evidence of past climatic conditions via indicator species, transfer function and mutual climatic range approaches as well as the trace element and stable isotope geochemistry of their shells. As methods of using ostracods as Quaternary palaeoclimate proxies have developed, so too has a critical awareness of their complexities, potential and limitations. This book combines up-to-date reviews (covering previous work and summarising the state of the art) with presentations of new, cutting-edge science (data and interpretations as well as methodological developments) to form a major reference work that will constitute a durable bench-mark in the science of Ostracoda and Quaternary climate change. - In-depth and focused treatment of palaeoclimate applications - Provides durable benchmark and guide for all future work on ostracods - Presents new, cutting-edge science
Escape Stories zur Leseförderung Deutsch 7-8
Der Trend Escape Room jetzt zur Förderung der Lesekompetenz im Fach Deutsch: 2-fach differenzierte Stories mit garantiertem Lesespaß Ob als Live Event, Online Game oder in Buchform: Escape Rooms ziehen gerade sowohl Kinder und Jugendliche als auch Erwachsene in ihren Bann. Warum also nicht den Trend in die Schule holen und mit Escape Stories die Schülerinnen und Schüler für das Lesen begeistern und gleichzeitig die Lesekompetenz fördern? Entführen Sie Ihre Schülerinnen und Schüler in die Katakomben Roms. Lassen Sie sie Bekanntschaft mit einer Zwergenfamilie machen, Abenteuer in Pyramiden erleben oder Außerirdische treffen. Jede der vier in diesem Band enthaltenen Geschichten birgt ...
Aquatic Biodiversity
In this age of increased fundamental and applied research on biodiversity, no single volume was as yet devoted to the various temporal and spatial aspects of aquatic biodiversity. The present book is published in honour of Professor Henri Dumont (Ghent, Belgium) at the occasion of his retirement as Editor-in-Chief of Hydrobiologia. The volume presents a selection of contributions on aquatic biodiversity, written by colleagues from the editorial board, fellow editors of aquatic journals and former students and collaborators. Contributions deal with a wide spectrum of topics related to aquatic biodiversity and cover fields such as actual- and palaeolimnology, taxonomy, and fundamental and applied limnology. Even reconnaissance chapters on management and cultural impact of water bodies are included. The book combines state-of-the-art contributions in aquatic sciences.
Der einfarbige Regenbogen, Kriminalroman
Was muss Isa noch alles erleiden? Ihre Mutter stirbt durch einen Unfall. Ihr Bruder Hanjo verschwindet. Ein mürrischer Kriminalkommissar nervt. Mona, ihre hübsche, aber kaltherzige Schwester, zeigt sich wenig beeindruckt. Lediglich Isas Nachbar Franz gibt ihr etwas Halt. Wieso taucht plötzlich Hanjos Regenbogenbild, das jahrelang verschwunden war, wieder auf? Isa zweifelt zunehmend an ihren Wahrnehmungen, mehr aber noch an ihren Mitmenschen. Ihr seelisches Gleichgewicht kippt. Dann findet Isa ihren Bruder Hanjo tot auf einer Wiese. Ein blutiger Hammer liegt neben ihm. Isas völliger Zusammenbruch kommt, als sie des Mordes an ihrem Bruder beschuldigt wird. Wer greift so heimtückisch in ihr Leben ein?
Die leeren Räume
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Liebe im Hochland
Isa McNavern, erfolgreiche Sopranistin in den Londoner Konzertsälen, sucht nach einer Stimmbandentzündung Erholung in ihrer schottischen Heimat. Bei einem Spaziergang wird sie Ohrenzeugin eines Komplotts gegen das Oberhaupt des Clans der McNavern, der getötet werden soll: Seine Gegner wollen sich in den Besitz eines sagenhaften Schatzes bringen, der auf dem Grund von Schloß Strathnavern versteckt sein soll. Isa warnt den Herzog, doch er glaubt ihr nicht. Er ist überzeugt, sie will sich lediglich eine Einladung zu dem in Kürze stattfindenden Ball erschleichen. Einzig sein Freund Harry Vernon ahnt die Gefahr, in der sich das Clanoberhaupt tatsächlich befindet...
