Living in a coastal lagoon environment: Photosynthetic and biochemical mechanisms of key marine macroalgae

The physiological status of Cystoseira compressa, Padina pavonica and Palisada tenerrima was studied by in vivo chlorophyll fluorescence, pigment content, stoichiometry (C:N), accumulation of UV photoprotectors and antioxidant activity; comparing their photosynthetic response in a coastal lagoon (Mar Menor) and in Mediterranean coastal waters. In general, the specimens reached their highest ETRmax, in spring in the Lagoon, but in summer in the Mediterranean, coinciding with their maximum biomass peak. The species exhibited a dynamic photoinhibition. Except C compressa, they showed a lower decrease in F-v/F-m and higher recovery rates in the Mediterranean populations when exposed to high irradiance. The higher salinity and temperature of the lagoon could impair the photoprotection mechanisms. The acclimation to lagoon environments is species-specific and involves complex regulatory mechanisms. The results underline the importance of N in repair, avoidance, quenching and scavenging mechanisms. In general, Lagoon specimens showed higher pigment concentration. Although xanthophylls play important photo-protective and antioxidant roles, the observed trend is more likely to be explained by the higher temperatures reached in the lagoon compared to Mediterranean. Therefore the studied photosynthetic and biochemical mechanisms can be effective not only for high irradiance, but also for higher temperatures in a climate change scenario, but are highly dependent on nutrient availability.

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Garcia-Sanchez M. Korbee N. Maria Perez-Ruzafa I. Marcos C. Figueroa F.L. y Perez-Ruzafa A. Living in a coastal lagoon environment: Photosynthetic and biochemical mechanisms of key marine macroalgae. Elsevier B.V., 2014. https://doi.org/10.1016/j.marenvres.2014.07.012

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Resource type Article
Date of creation 2024-11-05
Date of last revision 2025-01-20
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Metadata identifier 104c82bb-12ea-5370-858e-645842a0ea4a
Metadata language Spanish
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High-value dataset category Earth observation and environment
ISO 19115 topic category biota
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Bibliographic information
Name of the dataset creator Garcia-Sanchez, M., Korbee, N., Maria Perez-Ruzafa, I., Marcos, C., Figueroa, F.L. y Perez-Ruzafa, A.
Name of the dataset editor Elsevier B.V.
Other identifier DOI: 10.1016/j.marenvres.2014.07.012
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Email of the dataset creator martagarcia@um.es
Website of the dataset creator
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