Role of light and photophysiological properties on phytoplankton succession during the spring bloom in the north-western Mediterranean Sea

Brunet, C; Conversano, F; Margiotta, F; Dimier, C; Polimene, L; Tramontano, F; Saggiomo, V. 2013 Role of light and photophysiological properties on phytoplankton succession during the spring bloom in the north-western Mediterranean Sea. Advances in Oceanography and Limnology, 4 (1). 1-19. 10.1080/19475721.2013.779937

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Official URL: http://dx.doi.org/10.1080/19475721.2013.779937

Abstract/Summary

This study aimed to determine the role of light on the succession of the phytoplankton community during the spring bloom in the northwestern Mediterranean Sea. To this end, three successive Lagrangian experiments were carried out between March and April 2003. The three experiments correspond to distinct phases of the bloom development (pre-bloom, bloom peak and post-bloom, respectively) and therefore to different trophic conditions. Phytoplankton (sampled on a daily scale) was grouped in size-based classes (pico and nano+micro) each of them were characterised in terms of chemotaxonomic composition, primary production and photophysiological properties. The phytoplankton community evolved with time changing in both size-class dominance and specie/group dominance within each size class. The bloom peak was characterised by highly dynamic condition (i.e. vertical mixing) and by the dominance of both small (pico) and large (nano and micro) diatoms, as a result of their capacity to photoacclimate to changing light regimes (‘physiological plasticity’). Concluding, we suggest that the physiological adaptation to light is the main factor driving the succession of the phytoplankton community during the first phases of the bloom (until the onset of thermal stratification) in the western Mediterranean Sea.

Item Type: Publication - Article
Subjects: Ecology and Environment
Marine Sciences
Technology
Divisions: Plymouth Marine Laboratory > Science Areas > Today's Models Tomorrow's Futures
Depositing User: Mrs Julia Crocker
Date made live: 20 Mar 2014 17:16
Last Modified: 06 Jun 2017 16:10
URI: http://plymsea.ac.uk/id/eprint/5611

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