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The effect of salinity on growth, photosynthesis and respiration in the estuarine red algaBostrychia radicans mont
Helgoländer Meeresuntersuchungen volume 43, pages 61–66 (1989)
Abstract
The estuarine red alga,Bostrychia radicans, was subjected to osmotic stresses ranging from hypo-osmotic (9.9‰) to hyperosmotic conditions (37.4‰). The growth rate decreased with increasing salinities and showed a maximum in a mesohaline medium, while the photosynthetic rate and the chlorophyll a content increased under hyper-osmotic conditions. The rate of respiration remained constant over the salinity range tested.B. radicans revealed typical characteristics of “shade plants” having a low light compensation point at 3–4 μE m−2 s−1 correlated with a low photon flux density of 70–100 μE m−2 s−1 for saturation of photosynthesis. These physiological properties may explain the success ofB. radicans in estuarine habitats.
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Karsten, U., Kirst, G.O. The effect of salinity on growth, photosynthesis and respiration in the estuarine red algaBostrychia radicans mont. Helgolander Meeresunters 43, 61–66 (1989). https://doi.org/10.1007/BF02365550
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DOI: https://doi.org/10.1007/BF02365550