Articles | Volume 12, issue 3
Biogeosciences, 12, 697–712, 2015
https://doi.org/10.5194/bg-12-697-2015
Biogeosciences, 12, 697–712, 2015
https://doi.org/10.5194/bg-12-697-2015

Research article 04 Feb 2015

Research article | 04 Feb 2015

Synergistic effects of UVR and simulated stratification on commensalistic phytoplankton–bacteria relationship in two optically contrasting oligotrophic Mediterranean lakes

P. Carrillo et al.

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Under UVR and stratification,the commensalistic algae-bacteria interaction was strengthened in the high-UVR lake, where excretion of organic carbon rates exceeded the bacterial carbon demand,but did not occur in the low-UVR lake.The greater UVR damage to algae and bacteria and the weakening of their commensalistic interaction found in the low-UVR lake indicates these lakes would be especially vulnerable to UVR. These results have implications for the C cycle in lakes of the Mediterranean region.
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