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Book Cover
Author Ringelberg, Joop.

Title Diel vertical migration of zooplankton in lakes and oceans : causal explanations and adaptive significances / Joop Ringelberg
Published Dordrecht ; London : Springer, ©2010


Description 1 online resource (xiii, 356 pages) : illustrations (some color)
Contents Windows : an introduction -- Swimming in a strange biotope -- Light-induced, reactive swimming -- A decision-making mechanism -- Mechanistic models -- Light and temperature -- Optical orientations -- Considerations before going into the field -- Diel vertical migration in lakes -- Migrations in the marine environment -- The confrontation of experimental and field studies -- From the individual to the population and beyond -- Recapitulations and considerations
Summary The book deals with Diel Vertical Migration (DVM) of zooplankton in oceans and lakes and is the first critical discussion of the literature in 100 years of research. The accent is on photo-response experiments that revealed the physiological fundament unifying migration behaviour in both biotopes. Accelerations in relative changes in light intensity of dawn and dusk are the stimuli that trigger a PhotoBehaviour Mechanisms (PBM) evolved to realise predator evasion and starvation prevention. Physiology and behaviour are tuned to these adaptive goals. A "set of ecological factors" is necessary and an algorithm shows the operation of the "set". However, not only the kinetic component of behaviour is based on light, also orientation but now the angular light distribution is responsible. Contrast orientation as in Daphnia may also hold for other animals, for example, Euphausia. The application of the PBM in lakes and oceans is demonstrated amongst other for the vertical movements of Sound Scattering Layers. These layers move faster, slower or as fast as an isolume which was a problem for the decennia long explanation that migrating animals followed an optimal light intensity. The enigma was solved. Using time series of changes in population size, egg ratios, development times and death rates due to predation by juvenile fish, the influence of DVM on population dynamics was analysed. Finally, covering the flow of matter in the traditional food web by a network of information transitions illustrates the controlling function of infochemicals, such as fish kairomones
Bibliography Includes bibliographical references and index
Notes Print version record
Subject Zooplankton -- Vertical distribution
Zooplankton -- Effect of light on
SCIENCE -- Life Sciences -- Zoology -- Invertebrates.
Sciences de la terre.
Form Electronic book
ISBN 9789048130931