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Author: Barbara Hurd
Publisher: George F Thompson Publishing
Published: 2016
Total Pages: 0
ISBN-13: 9781938086458
DOWNLOAD EBOOKNo 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.
Author: David Lloyd
Publisher: Springer Science & Business Media
Published: 2008-08-27
Total Pages: 445
ISBN-13: 1402083521
DOWNLOAD EBOOK5. 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.
Author: John Palmer
Publisher: Elsevier
Published: 2012-12-02
Total Pages: 394
ISBN-13: 0323152422
DOWNLOAD EBOOKAn 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.
Author: Jurgen Aschoff
Publisher: Springer Science & Business Media
Published: 2013-03-09
Total Pages: 565
ISBN-13: 1461565529
DOWNLOAD EBOOKInterest 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.
Author: Willard L. Koukkari
Publisher: Springer Science & Business Media
Published: 2007-07-29
Total Pages: 675
ISBN-13: 1402047010
DOWNLOAD EBOOKIntroducing 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.
Author: Tim Edensor
Publisher: Routledge
Published: 2016-04-15
Total Pages: 254
ISBN-13: 1317129040
DOWNLOAD EBOOKIn 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.
Author: John Brady
Publisher: Cambridge University Press
Published: 1982-06-24
Total Pages: 220
ISBN-13: 9780521233071
DOWNLOAD EBOOKAuthor: Beatrice M. Sweeney
Publisher: Academic Press
Published: 2013-10-22
Total Pages: 187
ISBN-13: 1483259153
DOWNLOAD EBOOKRhythmic 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.
Author: Jole Shackelford
Publisher: University of Pittsburgh Press
Published: 2022-10-11
Total Pages: 371
ISBN-13: 0822989190
DOWNLOAD EBOOKIn 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.
Author: Jon Erickson
Publisher: Infobase Publishing
Published: 2014-05-14
Total Pages: 273
ISBN-13: 1438109652
DOWNLOAD EBOOKPresents 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.
