Photosynthetic performance of two freshwater red algal species

Abstract

Please cite this article as: Pálmai T., Szabó B., Hubai K. E., Padisák J.: Photosynthetic performance of two freshwater red algal species. Acta Bot Croat, DOI: 10.2478/botcro-2018-0010. This is a PDF file of a manuscript that has been accepted for publication and language edited. The manuscript will undergo technical editing, formatting and author proofing before it is published in its final form. s -1 ) in a photosynthetron. We found both species' photosynthesis maxima at 25 °C but B. atropurpurea had significantly higher photosynthetic production. Low and medium values were calculated for the species' photoadaptation parameters. Compensation light intensities determined in this study were similar to those obtained in previous studies. Both species utilized light efficiently; photoinhibition was detected only at two measuring temperatures for Bangia and at four measuring temperatures for Batrachospermum. P-T characteristics of the species revealed that both have temperature optima at 25 °C under high and medium light intensities but there are no such remarkable optima at low irradiance. The biomass specific respiration of both species increased with increasing temperature. We confirmed the good light utilization of these red algal species but found temperature optima higher than reported previously.

Ecophysiology of a successful phytoplankton competitor in the African flamingo lakes: the green alga Picocystis salinarum (Picocystophyceae)

“…When photoinhibition was observed, β (photoinhibition parameter) and the other parameters were calculated according to Platt et al (1980). Compensation light intensities were calculated according to Pálmai et al (2018). To calculate the optimum temperature for the different photosynthetic parameters, Gaussian and exponential curves were fitted.…”