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Rhythms and Clocks in Marine Organisms.

N Sören Häfker1,2, Gabriele Andreatta1,2, Alessandro Manzotti3

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Marine organisms exhibit diverse biological rhythms, from hourly to seasonal cycles, influencing their behavior and interactions. Understanding these rhythms is crucial for predicting responses to environmental changes like climate change.

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Area of Science:

  • Marine Biology
  • Chronobiology
  • Ecology

Background:

  • Marine life exhibits complex rhythms beyond tides and waves, spanning various timescales.
  • These biological rhythms regulate individual physiology, behavior, and ecological interactions.
  • Rhythmicity is observed across diverse marine taxa, including animals and algae, in multiple habitats.

Purpose of the Study:

  • To review examples of rhythmicity in marine life across different ecological niches and timescales.
  • To introduce fundamental concepts of chronobiology, distinguishing between rhythmic and endogenous processes.
  • To highlight the importance of studying marine biological rhythms for predicting responses to environmental change.

Main Methods:

  • Review of existing literature on marine biological rhythms.
  • Inclusion of examples from ecologically relevant species and laboratory model systems.
  • Explanation of key chronobiology concepts and definitions of scientific terms.

Main Results:

  • Marine organisms display a wide range of biological rhythms (hours to months).
  • Examples cover diverse marine groups (animals, algae) and habitats.
  • Distinction between general rhythmicity and endogenous oscillator-driven processes is clarified.

Conclusions:

  • Studying marine biological rhythms is essential for understanding ecological interactions.
  • Understanding rhythms aids in predicting species' responses to environmental perturbations, including climate change.
  • Interconnectedness of diverse rhythms and oscillators is key for ecological forecasting.