Download or read book Ultradian Rhythms from Molecules to Mind written by David Lloyd and published by Springer Science & Business Media. This book was released on 2008-08-27 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: 5. 1. 1 Biological Rhythms and Clocks From an evolutionary perspective, the adaptation of an organism’s behavior to its environment has depended on one of life’s fundamental traits: biological rhythm generation. In virtually all light-sensitive organisms from cyanobacteria to humans, biological clocks adapt cyclic physiology to geophysical time with time-keeping properties in the circadian (24 h), ultradian (24 h) domains (Edmunds, 1988; Lloyd, 1998; Lloyd et al. , 2001; Lloyd and Murray, 2006; Lloyd, 2007; Pittendrigh, 1993; Sweeney and Hastings, 1960) By definition, all rhythms exhibit regular periodicities since they constitute a mechanism of timing. Timing exerted by oscillatory mechanisms are found throughout the biological world and their periods span a wide range from milliseconds, as in the action potential of n- rons and the myocytes, to the slow evolutionary changes that require thousands of generations. In this context, to understand the synchronization of a population of coupled oscillators is an important problem for the dynamics of physiology in living systems (Aon et al. , 2007a, b; Kuramoto, 1984; Strogatz, 2003; Winfree, 1967). Circadian rhythms, the most intensively studied, are devoted to measuring daily 24 h cycles. A variety of physiological processes in a wide range of eukaryotic organisms display circadian rhythmicity which is characterized by the following major properties (Anderson et al. , 1985; Edmunds, 1988): (i) stable, autonomous (self-sustaining) oscillations having a free-running period under constant envir- mental conditions of ca.
Download or read book Tidal Rhythms written by Barbara Hurd and published by George F Thompson Publishing. This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: No photographer since Edward Weston has photographed the tidal waters and beaches of the Pacific Coast as Stephen Strom has, with an eye toward a rising sea and uncertain future.
Download or read book An Introduction to Biological Rhythms written by John Palmer and published by Elsevier. This book was released on 2012-12-02 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Introduction to Biological Rhythms provides an introduction to the subject of biological rhythms. The opening chapters present an overview of biological rhythms, their properties, and clock control, followed by a survey of rhythms in plants and animals. The subsequent chapters cover tidal rhythms and human rhythms; sun-compass, star-compass, and moon compass orientation of animals; the clock control of plant and animal photoperiodism; evidence for external timing of biological clocks; and models and mechanisms for endogenous timekeeping. The book also includes biographical sketches of Dr. Frank A. Brown, Jr., Morrison Professor of Biology at Northwestern University; and Dr. Leland N. Edmunds, Jr., Professor and Head of the Division of Biological Sciences at the Stony Brook campus of the State University of New York. This book is meant for the inquiring student seeking an introduction to the subject and for busy biologists in other fields who want to get a ""feel"" for the subject. It can also serve as a basic textbook for the existing biorhythms courses and act as a seed for the inauguration of new courses.
Download or read book Biological Rhythms written by Jurgen Aschoff and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 565 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in biological rhythms has been traced back more than 2,500]ears to Archilochus, the Greek poet, who in one of his fragments suggests ",,(i,,(VWO'KE o'olos pv{}J.tos txv{}pW7rOVS ~XH" (recognize what rhythm governs man) (Aschoff, 1974). Reference can also be made to the French student of medicine J. J. Virey who, in his thesis of 1814, used for the first time the expression "horloge vivante" (living clock) to describe daily rhythms and to D. C. W. Hufeland (1779) who called the 24-hour period the unit of our natural chronology. However, it was not until the 1930s that real progress was made in the analysis of biological rhythms; and Erwin Bunning was encouraged to publish the first, and still not outdated, monograph in the field in 1958. Two years later, in the middle of exciting discoveries, we took a breather at the Cold Spring Harbor Symposium on Biological Clocks. Its survey on rules considered valid at that time, and Pittendrigh's anticipating view on the temporal organization of living systems, made it a milestone on our way from a more formalistic description of biological rhythms to the understanding of their structural and physiological basis.
Download or read book Geographies of Rhythm written by Tim Edensor and published by Routledge. This book was released on 2016-04-15 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Rhythmanalysis, Henri Lefebvre put forward his ideas on the relationship between time and space, particularly how rhythms characterize space. Here, leading geographers advance and expand on Lefebvre's theories, examining how they intersect with current theoretical and political concerns within the social sciences. In terms of geography, rhythmanalysis highlights tensions between repetition and innovation, between the need for consistency and the need for disruption. These tensions reveal the ways in which social time is managed to ensure a measure of stability through the instantiation of temporal norms, whilst at the same time showing how this is often challenged. In looking at the rhythms of geographies, and drawing upon a wide range of geographical contexts, this book explores the ordering of different rhythms according to four main themes: rhythms of nature, rhythms of everyday life, rhythms of mobility, and the official and routine rhythms which superimpose themselves on the multiple rhythms of the body.
Download or read book Rhythmic Phenomena in Plants written by Beatrice M. Sweeney and published by Academic Press. This book was released on 2013-10-22 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rhythmic Phenomena in Plants, Second Edition focuses on the study of biological clocks in all kinds of plants, from unicellular algae to flowering trees. This book discusses the patterns of plant movement, parameters of rhythms and how to calculate them, and rhythms that match and do not match environmental periodicities. The mechanism of circadian timing, circadian rhythms in angiosperms, comparison between dinoflagellates and other rhythmic organisms, and semilunar and lunar rhythms are also elaborated. This publication likewise covers the measurement of day length in photoperiodism, circannian rhythms in plants, oscillations with short periods in leaves and roots, and streaming in a slime mold. This edition is valuable to biologists intending to contribute to the study of biological timing.
Download or read book Text Book Of General Physiology written by P.V. Jabde and published by Discovery Publishing House. This book was released on 2005 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physiology as such a vast subject with unlimited scope and which can be studied in different ways. There was a long left need, among students and teachers for a text book with recent information and written according to national syllabus. Efforts have been made to collect recent informations from several standard works and journals. Contents: Nutrition, Circulation, Respiration, Physiology of Aviation High Altitude, Space and Deep-sea Diving, Thermo- Regulation, Osmoregulation, Excretion, Muscles, Nervous System, Reproduction, Sense Organs, Chemical Messengers, Physiology of Endocrine Glands, Chronobiology.
Download or read book Tides A Very Short Introduction written by David George Bowers and published by Oxford University Press. This book was released on 2019-11-28 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tide is the greatest synchronised movement of matter on our planet. Every drop of seawater takes part in tidal motion, driven by the gravitational pull of the moon and sun. At the coast, we see the tide as a twice-daily rise and fall of sea level that moves the edge of the sea up and down a beach or cliff-face. In some places, the tide is small but at others it can rise in a few hours by the height of a three storey building; it then has to be treated with great respect by those who live and work by the sea. In this Very Short Introduction David George Bowers and Emyr Martyn Roberts explore what we know about the tides. Blending clear explanations of well known tidal phenomena with recent insights in the deep ocean and coastal seas, Bowers and Roberts use examples from around the world, to tell the story of the tide, considering its nature and causes, its observation and prediction, and unusual tides and their relevance. They explore why tides have attracted the attention of some of the world's greatest scientists, from the initial challenge of explaining why there are two tides a day when the moon and sun pass overhead just once; a problem that was solved by Isaac Newton. In the 19th century, scientists unravelled the rhythms of the tide; good tidal predictions in the form of tide tables were then possible. The predictions were made on beautiful tide predicting machines constructed of brass and mahogany, some of which can still be seen in maritime museums. In the 20th century, the importance of tides as mixers of sea water became evident. As Bowers and Roberts explore, tidal mixing of the ocean is essential for maintaining its deep circulation, a key part of the climate-control system of our planet. In inshore waters, tidal mixing enhances biological productivity, influences sea temperature and turbidity and creates dramatic features such as maelstroms and tidal bores. In the 21st century, space probes are examining the effects of tidal processes on the moons of Jupiter and Saturn and the possibility of tidally-heated liquid oceans with their own ecosystems. Looking to the cutting edge of tidal research, Bowers and Roberts also consider how we can study the role of the tide in the geological and biological evolution of our own planet with innovative computer models. ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.
Download or read book An Introduction to the History of Chronobiology Volume 2 written by Jole Shackelford and published by University of Pittsburgh Press. This book was released on 2022-10-11 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: In three volumes, historian Jole Shackelford delineates the history of the study of biological rhythms—now widely known as chronobiology—from antiquity into the twentieth century. Perhaps the most well-known biological rhythm is the circadian rhythm, tied to the cycles of day and night and often referred to as the “body clock.” But there are many other biological rhythms, and although scientists and the natural philosophers who preceded them have long known about them, only in the past thirty years have a handful of pioneering scientists begun to study such rhythms in plants and animals seriously. Tracing the intellectual and institutional development of biological rhythm studies, Shackelford offers a meaningful, evidence-based account of a field that today holds great promise for applications in agriculture, health care, and public health. Volume 1 follows early biological observations and research, chiefly on plants; volume 2 turns to animal and human rhythms and the disciplinary contexts for chronobiological investigation; and volume 3 focuses primarily on twentieth-century researchers who modeled biological clocks and sought them out, including three molecular biologists whose work in determining clock mechanisms earned them a Nobel Prize in 2017.
Download or read book Lost Creatures of the Earth written by Jon Erickson and published by Infobase Publishing. This book was released on 2014-05-14 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents an examination of possible phenomena that caused dramatic changes in the earth's surface that could explain periodic mass extinctions and the evolution of new species.
Download or read book Introducing Biological Rhythms written by Willard L. Koukkari and published by Springer Science & Business Media. This book was released on 2007-07-29 with total page 675 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introducing Biological Rhythms is a primer that serves to introduce individuals to the area of biological rhythms. It describes the major characteristics and discusses the implications and applications of these rhythms, while citing scientific results and references. Also, the primer includes essays that provide in-depth historic and other background information for those interested in more specific topics or concepts. It covers a basic cross-section of the field of chronobiology clearly enough so that it can be understood by a novice, or an undergraduate student, but that it would also be sufficiently technical and detailed for the scientist.
Download or read book Estuarine Comparisons written by Victor S Kennedy and published by Elsevier. This book was released on 2013-09-25 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estuarine Comparisons compares the knowledge gained about many of the world's estuaries. The book compares the Pacific, Gulf, and Atlantic coast estuaries, and the physical, chemical, and biological parameters in estuaries throughout the world. The text also compares the features of North Sea, east and West Atlantic, Gulf, and Pacific estuaries, as well as of pioneering work in the Chang Jiang estuary of China, one of the largest in the world. Comparisons of anadromous fisheries, estuarine microbiology, and many other interactive features over a wide variety of latitudinal and longitudinal variation are also encompassed. People interested in estuaries, including ecologists, will find the book invaluable.
Download or read book Marine Geology written by Jon Erickson and published by Infobase Publishing. This book was released on 2009 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fully revised and expanded edition of "Marine Geology closely examines the interrelationship between water and its life forms and geologic structures. It looks at several ideas for the origins of the Earth
Download or read book The Control of Chromatophores written by M. Fingerman and published by Elsevier. This book was released on 2013-10-22 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Control of Chromatophores focuses on the color changes in animals, particularly among the invertebrates. Cells containing pigment that can disperse or concentrate, thereby changing the tint of the organism in which they lie, are known as chromatophores. Well-developed, functional chromatophore systems are common among cephalopods, crustaceans, and poikilotherm vertebrates. Rare instances are found among other groups such as annelids, echinoderms, and insects. After an introduction to the types, chemistry, and functional significance of chromatophores, this text concentrates on the chromatophores of crustaceans, insects, cephalopods, echinoderms, and vertebrates. This book is recommended for students and biologists conducting work on chromatophores and color changes.
Download or read book Biomechanics in Animal Behaviour written by R.W. Blake and published by Garland Science. This book was released on 2021-05-31 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomechanics in Animal Behaviour offers a unique approach by integrating fully the fields of animal behaviour and biomechanics. It demonstrates how an understanding of biomechanical issues is an important part of evaluating and predicting animal behaviour. The book examines how behaviour is determined and/or constrained by biomechanical variables such as hydrodynamics, aerodynamics, kinematics, and the mechanical properties of biomaterials.
Download or read book TEXTBOOK OF ANIMAL BEHAVIOUR THIRD EDITION written by MANDAL, FATIK BARAN and published by PHI Learning Pvt. Ltd.. This book was released on 2015-09-18 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: This well-accepted book, now in its Third Edition, is an extension of the previous edition. The text has further enriched with more information to understand animal behaviour coherently and scientifically. The book attempts to provide a reasonably suitable account of animal behaviour for undergraduate as well as postgraduate students. Although behaviour of animals has fascinated people for a long, behavioural biology has been incorporated in the syllabi very recently. The study of behaviour received its important boost from the work of Charles Darwin who used the term ‘instinct’, to refer to the natural behaviour of animals. In the 1930s, a comprehensive theory of animal behaviour emerged through the work of Konrad Lorenz and, later of Niko Tinbergen. Biological study of behaviour, in fact came of age as a science when Lorenz, Tinbergen and Karl von Frisch received the Nobel Prize for their contribution to science. Observing and describing exactly what animals do is fascinating and scientific analysis of their behaviour is significant for several reasons. Each species tends to have an array of stereotyped behaviours, some of which are shared with related species, but others are unique. Ecology, natural selection, macroevolution, microevolution, and gene constitute the foundation of animal behaviour. Various animal groups exhibit diverse strategies for their survival and reproduction which are discussed in this book. The book is primarily intended for the students of B.Sc./M.Sc. (Zoology/Life Science) for their courses. It would be useful for the researchers in the field of animal behaviour, and conservation biologists. It would also attract students who are pursuing courses in Sociology and Anthropology. Key features • Presents a well-balanced view of ethology. • Discusses the current development in the field. • Includes a glossary of important terms. • Offers chapter-end questions to check the students’ understanding of the concept.
Download or read book Zoology Paper 2 Ecology Ethology Environmental Science and Wildlife written by Dr. Vivek Kumar Verma and published by Thakur Publication Private Limited. This book was released on 2024-04-01 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Buy Latest Zoology ( Paper 2 ) Ecology, Ethology, Environmental Science and Wildlife e-Book for B.Sc 6th Semester UP State Universities By Thakur publication.
