Download or read book Lost Sex written by Isa Schön and published by Springer Science & Business Media. This book was released on 2009-09-22 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sex is the queen of problems in evolutionary biology. Generations of researchers have investigated one of the last remaining evolutionary paradoxes: why sex exists at all. Given that sexual reproduction is costly from an evolutionary point of view, one could wonder why not all animals and plants reproduce asexually. Dozens of contemporary hypotheses attempt to explain the prevalence of sex and its advantages and predict the early extinction of fully asexual lineages. The major theme of this book is: what is the fate of animal and plant groups in which sex is lost? Initial chapters discuss theory behind asexual life: what major disadvantages do asexual groups have to face, what are the genetic and ecological consequences and what does this theory predict for more applied aspects of asexual life, for example in agricultural pests, diseases as well as in cultural crops such as grapes. Cases studies in many animals (focusing on both invertebrates and vertebrates) and plants reveal parallel, but also singularly novel adaptations to the absence of meiosis and syngamy. And last but not least, are asexuals really doomed to early extinction or do genuine ancient asexuals exist? This book assembles contributions from the most important research groups dealing with asexual evolution in eukaryotes. It is a milestone in research on parthenogenesis and will be useful to undergraduate as well as graduate students and to senior researchers in all fields of evolutionary biology, as the paradox of sex remains its queen of problems.
Download or read book 3e Congr s Europ en Des Ostracodologistes written by Sylvie Crasquin-Soleau and published by . This book was released on 1998 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abnormal Pressures While Drilling written by Awdesh Tiwari and published by . This book was released on 2015-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book studies the mechanisms and causes of abnormal pressure distribution while drilling.
Download or read book Graphic Correlation written by Keith Olin Mann and published by . This book was released on 1995 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Understanding Late Devonian and Permian Triassic Biotic and Climatic Events written by Jeff Over and published by Elsevier. This book was released on 2005-12-02 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Late Devonian and Permian-Triassic intervals are among the most dynamic episodes of Earth history, marked by large secular changes in continental ecosystems, dramatic fluctuations in ocean oxygenation, major phases of biotic turnover, volcanism, bolide impact events, and rapid fluctuations in stable isotope systems and sea level. This volume highlights contributions from a broad range of geological sub-disciplines currently striving to understand these critical intervals of geologically rapid, global-scale changes.* Provides updated, current models for the mid-Late Devonian and Permian-Triassic mass extinction episodes* Highlights several new analytical approaches for developing quantitative datasets* Takes an integrated approach presenting datasets from a broad range of sub-disciplines
Download or read book 125 godina Srpskog geolo kog dru tva written by Ljupko Rundić and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Carboniferous Permian Transition written by Spencer G. Lucas and published by New Mexico Museum of Natural History and Science. This book was released on 2013 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Continental Evolution The Geology of Morocco written by André Michard and published by Springer. This book was released on 2008-09-26 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Morocco is one of the most fascinating lands in the world from the point of view of its geological structure and evolution. Our knowledge on the geology of the country has been greatly improved during the last decades, based on numerous seismic profiles and boreholes, seismological analysis of focal mechanisms, seismic tomography, gravimetric/geodetic modelling and, on the other hand, based on a big National Program of Geological Mapping including modern geochemical analyses (trace elements) and reliable isotopic datings (39Ar-40Ar, U-Pb zircon, Sm-Nd, etc). Moreover, a number of academic studies have been performed in relation with the increasing number of Moroccan universities. Accordingly, there was an utmost urgency to undertake a new treatise of Moroccan geology which could substitute for the classical Eléments de géologie marocaine, published in 1976 by A. Michard in the Notes et Mémoires du Service géologique du Maroc (re-edited twice since 1976, with more than 6000 copies sold, and... translated in Japanese for engineers!). A new treatise has been prepared between April 2006 and July 2007 under the coordination of A. Michard, assisted by O. Saddiqi, and A. Chalouan, by a wide panel of authors from Morocco, France or Belgium among the best connoisseurs of the country. In order to emphasize the general interest of the book, we finally retain the following title: Continental Evolution: The Geology of Morocco. Structure, Stratigraphy, and Tectonics of the Africa-Atlantic-Mediterranean Triple junction. The editing and production of this book was supported by the following organisations: The Geological Society of France (SGF) The National Office of Hydrocarbons and Mines of Morocco (ONHYM) The International Lithosphere Program (ILP)
Download or read book The Late Devonian Standard Conodont Zonation written by Willi Ziegler and published by . This book was released on 1990-06-30 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Devonian Climate Sea Level and Evolutionary Events written by R. T. Becker, 1st and published by Geological Society of London. This book was released on 2016-10-20 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: The geological and palaeontological records of climate change and evolutionary events reflect Earth’s widely fluctuating climate systems. Past climates hold the clues to understanding future developments. In this context, research on linked climate, biodiversity and sea-level fluctuations of the Devonian contributes to the general knowledge of deep-time climate dynamics. A fruitful co-operation between the International Geoscience Programme IGCP 596 and the International Subcommission on Devonian Stratigraphy (SDS) addressed the complex succession of climate-linked Devonian global events of varying magnitude. The primary goal of IGCP 596 was to assess mid-Palaeozoic climate changes and their impact on marine and terrestrial biodiversity using an interdisciplinary approach. The focus of SDS includes a revision of the eustatic sea-level curve and the integration of refined chrono- and biostratigraphy with modern chemo-, magneto-, cyclo-, event- and sequence stratigraphy. This enabled the much improved dating and correlation of abiotic perturbations, evolutionary changes, organism and ecosystem ranges. Results by 37 authors are presented in 14 chapters, which cover the entire Devonian.
Download or read book Tectonics Magmatism and Metallogeny of Mongolia written by A.B Dergunov and published by Routledge. This book was released on 2004-11-23 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides the first systematic description of the most important geological structures of Mongolia and discusses the main features of these structures and their interactions. The main characteristics of magmatism are described for each stage of tectonic development and the evolution of magmatism is considered with reference to lithosphere development. Mongolia is a key region of the world and this volume provides a primary source of reference for postgraduates and researchers.
Download or read book Devonian Events and Correlations written by R. T. Becker and published by . This book was released on 2007 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Devonian was a peculiar period, characterized by simplified plate tectonic configurations, climatic overheating and widely flooded continents. This volume homours the lifetime stratigraphic achievements of Michael Robert House (1930-2002). Based on case studies, it shows how the combination of biostratigraphy, chemostratigraphy, magnetostratigraphy, sequence stratigraphy and event stratigraphy can contribute to a much deeper understanding of both regional and global environmental change.
Download or read book Cytology in Evolution of Parthenogenesis written by E. Suomalainen and published by Springer. This book was released on 1987-08-31 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evolution of Asexual Reproduction in Plants written by M. Mogie and published by Springer. This book was released on 1992-06-30 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asexual reproduction is found in many taxonomic groups and considerable effort has been directed by biologists towards understanding its mechanisms, evolution and ecological significance. This title offers a thought-provoking and novel contribution to this debate.
Download or read book Redefining Normal written by Alexis Black and published by . This book was released on 2019-11-09 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Growing up, they didn't believe they had a future. Together, they are building forever. Alexis Black persevered through her mother's death and her father's imprisonment. And after escaping a long and abusive relationship, the college junior promised her foster parents not to date for at least a year. But when she meets an incoming freshman on the first day of their scholarship program, she feels the world melt away, as though it were only the two of them in the room. Justin Black lived in the poorest section of Detroit before his parents surrendered him to the foster care system at the age of nine. But when he grabs the chance for better opportunities by pursuing higher education, he can't help but be drawn to a beautiful third-year student. At first, their past traumas--and their age difference--conspired to complicate their attraction. But the joy each took in the other and eventually conquered those obstacles, and these two survivors journeyed together toward healing. In a stark and wholehearted true story that shares how two individuals on separate paths found each other, Alexis and Justin merge their course into one full of hope and purpose. And hand-in-hand, with a desire to help others, they learned to reject the abusive patterns of their past, thereby intentionally breaking the cycle of generational violence and unhealthy behaviors. Written in an engaging novelistic style, the authors put forward a thoughtful exchange of ideas and personal experiences illustrating how anybody, no matter their backgrounds, can have a life of self-empowerment and joy. Broken down into four sections that cover crucial topics such as "Worthiness" and "Mental Health," this compelling narrative will help any who are learning to love themselves and want to end the line of toxic relationships. Redefining Normal: How Two Foster Kids Beat The Odds and Discovered Healing, Happiness, and Love is a page-turning memoir that will open your eyes to possibilities and dreams. If you like honest tales of triumph, refreshing transparency, and resilient faith in God, then you'll adore Justin and Alexis' inspirational story. This story contains mentions of domestic violence, trauma, sexual assault, and other difficult issues faced on the road to healing. Buy Redefining Normal to claim victory over harmful pasts today!
