Circannual Rhythms

Endogenous Annual Clocks in the Organization of Seasonal Processes

  • Eberhard Gwinner

Part of the Zoophysiology book series (ZOOPHYSIOLOGY, volume 18)

Table of contents

  1. Front Matter
    Pages I-XI
  2. Eberhard Gwinner
    Pages 1-9
  3. Eberhard Gwinner
    Pages 11-38
  4. Eberhard Gwinner
    Pages 39-48
  5. Eberhard Gwinner
    Pages 49-68
  6. Eberhard Gwinner
    Pages 69-97
  7. Eberhard Gwinner
    Pages 99-129
  8. Back Matter
    Pages 131-154

About this book


In addition to the more or less static properties of the environ­ ment, plants and animals must cope with its temporal variations. Among the most conspicuous temporal changes to which organisms are exposed are periodic phenomena generated by the rotation of the earth about its axis, its revolution around the sun, and the more complex movements of the moon in relation to both sun and earth. The first two of these astronomical cycles are basic to the familiar daily and annual rhythms, respectively, in the environment. The third generates somewhat more complex cycles, such as those in moonlight and variations in tides. These environmental cycles have provided challenges and opportunities for organisms to adjust their physiology and behavior to them. Indeed, the predictability inherent to these periodic processes has enabled organisms to evolve innate endogenous rhythmic programs that match the environmental cycles and allow, in a variety of different ways, adjustment of biological activities to the cycles of environmental changes. The endogenous nature of rhythmicity was first clearly recognized in the 1930's in daily periodicities, the most widely distributed and best investigated class of biological rhythms of this type. In the 1950's, demonstrations of endogenous tidal and lunar rhythms, which occur in some littoral and marine organisms, ensued. Another decade passed before endogenous annual periodicities were first demonstrated unambiguously.


Mammalia animals development environment invertebrates mammals migration physiology system temperature vertebrates

Authors and affiliations

  • Eberhard Gwinner
    • 1
  1. 1.Max-Planck-Insitut für Verhaltensphysiologie, VogelwarteAndechsGermany

Bibliographic information

  • DOI
  • Copyright Information Springer-Verlag Berlin Heidelberg 1986
  • Publisher Name Springer, Berlin, Heidelberg
  • eBook Packages Springer Book Archive
  • Print ISBN 978-3-642-82872-0
  • Online ISBN 978-3-642-82870-6
  • Series Print ISSN 0720-1842
  • Buy this book on publisher's site