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Speciation
Published by Sinauer Associates, an imprint of Oxford University Press. Over the last two decades, the study of speciation has expanded from a modest backwater of evolutionary biology into a large and vigorous discipline.Thus, the literature on speciation, as well as the number of researchers and students working in this area, has grown explosively.Despite these developments, there has been no book-length treatment of speciation in many years.As a result, both the seasoned scholar and the newcomer to evolutionary biology had no ready guide to the recent literature on speciation--a body of work that is enormous, scattered, and increasingly technical.Although several excellent symposium volumes have recently appeared, these collections do not provide a unified, critical, and up-to-date overview of the field.Speciation is designed to fill this gap. Aimed at professional biologists, graduate students, and advanced undergraduates, Speciation covers both plants and animals (the first book on this subject to do so), and deals with all relevant areas of research, including biogeography, field work, systematics, theory, and genetic and molecular studies.It gives special emphasis to topics that are either controversial or the subject of active research, including sympatric speciation, reinforcement, the role of hybridization in speciation, the search for genes causing reproductive isolation, and mounting evidence for the role of natural and sexual selection in the origin of species.The authors do not hesitate to take stands on these and other controversial issues.This critical and scholarly book will be invaluable to researchers in evolutionary biology and is also ideal for a graduate-level course on speciation.
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Knowledge Preservation and Curation
In order to achieve its full value, knowledge must flow and be continuously used.Knowledge use, reuse, and repurposing has been a challenge discussed in knowledge sciences literature for over three decades.Based on a review of research and conversations with business stakeholders, the authors investigate and offer solutions to two key challenges - preserving and curating knowledge. Knowledge Preservation and Curation focusses on business value and processes rather than traditional legal and financial requirements, and further, explores preservation and curation in known and unknown business futures.Real-world examples from cutting-edge private and public sector organizations are included, and give unique insight into the world of knowledge management.
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Tagging Freedom
Out of the revolutions across the Arab world comes this inspirational story of hope, freedom, and belonging, perfect for fans of Other Words for Home and A Good Kind of Trouble. Kareem Haddad of Damascus, Syria, never dreamed of becoming a graffiti artist.But when a group of boys from another town tag subversive slogans outside their school, and another boy is killed while in custody, Kareem and his friends are inspired to start secretly tag messages of freedom around their city. Meanwhile, in the United States, his cousin, Samira, has been trying to make her own mark.Anxious to fit in at school, she joins the Spirit Squad where her natural artistic ability attracts the attention of the popular leader.Then Kareem is sent to live with Sam’s family, and their worlds collide.As graffitied messages appear around town and all eyes turn to Kareem, Sam must make a choice: does she shy away to protect her new social status, or does she stand with her cousin? Informed by her time as a journalist, author Rhonda Roumani's Tagging Freedom is a thoughtful look at the intersection between art and activism, infused with rich details and a realistic portrayal of how war affects and inspires children, similar to middle grade books for middle schoolers by Aisha Saeed, The Night Diary by Veera Hiranandi, or Refugee by Alan Gratz.
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Tagging Freedom
Out of the revolutions across the Arab world, comes this inspirational story of hope, freedom, and belonging, perfect for fans of Other Words for Home and A Good Kind of Trouble. Kareem Haddad of Damascus, Syria, never dreamed of becoming a graffiti artist.But when a group of boys from another town tag subversive slogans outside their school, and another boy is killed while in custody, Kareem and his friends are inspired to start secretly tagmessages of freedom around their city. Meanwhile, in the United States, his cousin, Samira, has been trying to make her own mark.Anxious to fit in at school, she joins the Spirit Squad where her natural artistic ability attracts the attention of the popular leader.Then Kareem is sent to live with Sam’s family, and their worlds collide.As graffitied messages appear around town and all eyes turn to Kareem, Sam must make a choice: does she shy away to protect her new social status, or does she stand with her cousin? Informed by her time as a journalist, author Rhonda Roumani's Tagging Freedom is a thoughtful look at the intersection between art and activism, infused with rich details and a realistic portrayal of how war affects and inspires children, similar to middle grade books for middle schoolers by Aisha Saeed, The Night Diary by Veera Hiranandi, or Refugee by Alan Gratz.
Price: 7.99 £ | Shipping*: 3.99 £
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How does speciation occur in biology?
Speciation occurs in biology when a population of organisms becomes isolated from the rest of its species, leading to genetic differences accumulating over time. These genetic differences can be the result of mutations, natural selection, genetic drift, or other factors. Eventually, the isolated population may become different enough from the original population that they can no longer interbreed and produce viable offspring, leading to the formation of a new species. This process can take thousands or even millions of years to occur.
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How does speciation occur through evolution?
Speciation occurs through evolution when a population of organisms becomes reproductively isolated from the rest of its species, leading to the development of distinct genetic traits and characteristics. This isolation can occur through various mechanisms such as geographic barriers, behavioral differences, or genetic mutations. Over time, these genetic differences accumulate, leading to the formation of a new species that is unable to interbreed with the original population. This process of speciation is a key driver of biodiversity and the development of new species over time.
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What are the selection conditions in speciation?
The selection conditions in speciation refer to the factors that drive the divergence of populations into separate species. These conditions include natural selection, genetic drift, and sexual selection. Natural selection acts on the variation within a population, favoring traits that increase an individual's fitness in a specific environment. Genetic drift, on the other hand, is the random fluctuation of allele frequencies in a population, which can lead to the fixation of different alleles in separate populations. Finally, sexual selection can drive the evolution of traits that enhance an individual's ability to attract mates, leading to reproductive isolation and ultimately speciation.
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How does speciation occur in mistletoe crows?
Mistletoe crows are a type of bird that have been observed to undergo speciation through a process known as ecological speciation. This occurs when different populations of mistletoe crows become adapted to different ecological niches within their habitat, leading to the development of reproductive isolation. For example, mistletoe crows that feed on different species of mistletoe plants may become genetically distinct over time, leading to the formation of new species. Additionally, geographic isolation can also play a role in speciation, as different populations of mistletoe crows may become isolated from one another and evolve independently.
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Photography, Curation, Criticism : An Anthology
This unique collection brings together the work of photography writer, curator, and lecturer, Liz Wells, reflecting on key themes of landscape, place, nationhood, and environmental concerns.A newly written introductory chapter contextualizes the collection.This is followed by an ‘in conversation’ with Martha Langford, Concordia University, Montreal, that brings together two leading figures in the field to respond to Wells’ thought and the themes that emerge in her writings.The essays included in this anthology draw on work from a variety of sources including artists’ photobooks, exhibition catalogues, magazines, academic books, and journals.Seventeen previously published articles, organized thematically in relation to Curation and Residency, Phenomena, Place, and Critical Reflections, demonstrate Wells’ critical and curatorial approach to research through photographic practices, reflecting a core view of art (at its best) operating to convey the implications of what is being explored and to evoke responses that are simultaneously sensory and intellectual.This collection will be essential reading for students and scholars of photography, visual culture, and art history, especially those examining landscape and environmental photography.
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Sharing
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Sharing
The collection combines simple yet sensitive text with energetic and gentle illustrations.These books are a child's perfect introduction to describing what they feel and how they relate to others and the world.
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Sharing
A perfect sharing book for your toddler — with clever cut outs showing how two friends can be happy enjoying things they want together. ? A Kirkus Best Book of 2020? An ABC Best Books for Young Readers selection? "Sharing is caring, and this small gem of a board book is a delight to share with little listeners.” —Kirkus Reviews, starred reviewWhen two rabbits want the same carrot, how can they decide who gets it?When two monkeys want the same banana, what are they to do?The answer becomes clear when you turn the die-cut pages to find the answers underneath in this clever concept book from a board book master.This adorable and interactive book is the perfect way for young children to learn the importance of sharing--both the things they crave and the time of others. “Many of us struggle all our lives with this concept.The brilliant Yusuke Yonezu, master board book creator, shows toddlers (and grownups) how it's done.” —Maria Russo, Editorial Director, mineditionUS
Price: 10.99 £ | Shipping*: 3.99 £
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What is meant by selection conditions in speciation?
Selection conditions in speciation refer to the environmental pressures or factors that drive the evolution of new species. These conditions can include factors such as competition for resources, predation, or changes in habitat. Organisms that are better adapted to these selection conditions are more likely to survive and reproduce, leading to the formation of new species over time. Ultimately, selection conditions play a crucial role in shaping the genetic diversity and evolutionary trajectories of populations undergoing speciation.
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What is a mnemonic for the term speciation?
A mnemonic for the term speciation could be "S.P.E.C.I.E.S." where each letter stands for a different aspect of speciation: - S: Separation of populations - P: Population genetic changes - E: Ecological divergence - C: Courtship and mating behaviors - I: Isolation mechanisms - E: Evolutionary divergence - S: Speciation achieved
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Why does adaptive radiation occur through allopatric speciation processes?
Adaptive radiation occurs through allopatric speciation processes because when a population becomes geographically isolated, different environmental conditions and selective pressures can lead to the evolution of new traits and adaptations. This can result in the rapid diversification of species as they adapt to their specific habitats and niches. Over time, this can lead to the emergence of multiple new species with distinct characteristics, allowing them to occupy different ecological roles and reduce competition among them.
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What is the difference between allopatric and sympatric speciation?
Allopatric speciation occurs when a population is separated by a physical barrier, such as a river or mountain range, leading to the evolution of two separate species. In contrast, sympatric speciation occurs when a new species evolves within the same geographic area as its parent species, without any physical barriers. Sympatric speciation often involves factors such as ecological, behavioral, or genetic differences driving the formation of a new species within the same habitat.
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