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Biological rhythmicity in phytoplankton and interactions with turbulence: from the cell to the ecosystem scale

AuthorsBerdalet, Elisa
Issue Date3-Jul-2017
PublisherCSIC - Instituto de Ciencias del Mar (ICM)
Associació Catalana d’Oceanògrafes i Oceanògrafs
CitationThe Ramon Margalef Summer Colloquia (2017)
AbstractPhotosynthetic organisms are at the basis of all ecosystems. The strong depencyof photosynthesis on light availability determines that most physiological processesare entrained by the light:dark cycle. In aquatic systems, diel cycles inphotosynthesis and respiration, reproduction and encystment/excystment, andmigration in the water column experienced by microalgae are also modulated bynutrient availability and turbulent mixing, which in turn exhibit other pulsatingpatterns. The overall rhythmic dynamics of microalgae affects the links with othercomponents of the food webs such as primary or secondary predators.This session will illustrate, combining laboratory, field and modelling studies, thebiological and physical rhythmicity from the cell to the ecosystem scales. SomeExamples will include the modulation of physiological processes in phytoplanktonmodulated by turbulence at the Kolmogorov microscale, the integration of suchbiological rhythmicity in thin layers and frontal systems, controlled by pulsatingpatterns of physical turbulence at fine-scale and finally, the dynamics of microalgaeblooms at a seasonal and regional scales
DescriptionThe Ramon Margalef Summer Colloquia, Spatial and temporal patterns in physical-biological oceanic processes: from scale interaction to the rise of the living ocean, 3-12 July 2017, Barcelona
Appears in Collections:(ICM) Seminarios científicos
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