Current toxicity tests with microalgae are often criticized as being overly sensitive to metals because algae are cultured in metal-deficient media. If such bioassays overestimate copper toxicity in surface waters, the relevance of water quality guidelines derived from these tests is questionable. In this study, the effect of acclimation to copper at environmentally relevant concentrations, on ...

Algae is an appropriate natural resource to augment the optimal use of undesired ions in water and wastewater. Increasing algal cells, consumption particular ions, including chloride, nitrate, phosphate, ammonium, provides a suitable way optimize treatment processes. Different species have capability survive extreme salinities by developing resistance against osmotic pressure saline water. The ...

Intensive cultivation of freshwater macroalgae is likely to increase with the development of an algal biofuels industry and algal bioremediation. However, target freshwater macroalgae species suitable for large-scale intensive cultivation have not yet been identified. Therefore, as a first step to identifying target species, we compared the productivity, growth and biochemical composition of th...

In this recently published paper [1], the wrong Austrian Science Fund Project Number (210316-B16) was quoted in the Acknowledgment Section. The correct version of the Acknowledgment is given below. Acknowledgments The authors wish to thank Peter K. Hepler for critically reading this manuscript and Thomas Url for providing the schematic drawing on the development of Desmidium. The financial supp...

Iron encrustations on filamentous algae colonized by Gallionella-related bacteria in a metal-polluted freshwater stream J. F. Mori, T. R. Neu, S. Lu, M. Händel, K. U. Totsche, and K. Küsel Institute of Ecology, Aquatic Geomicrobiology, Friedrich Schiller University Jena, Dornburger Strasse 159, 07743 Jena, Germany Department of River Ecology, Helmholtz Centre for Environmental Research – UFZ, B...

A stable isotope mass-balance of dissolved inorganic carbon during a blue-green algae bloom in a softwater lake demonstrates that at low partial pressure of carbon dioxide there must be a large net negative carbon isotope fractionation between atmospheric CO1 and the CO2 absorbed by lake water at pH = 9.5. The net fractionation of CO*(g) with respect to HCO; was about -13%~ compared with about ...

Fluoride in aquatic systems is increasing due to anthropogenic pollution, but little is known about how this fluoride affects organisms that live in and around aquatic habitats. Fluoride can bioaccumulate in structures comprised of calcium carbonate, such as shells and skeletons of both freshwater and saltwater species as diverse as snails, corals, and coccolithophorid algae. In this article, i...

Cell-free filtrates of axenic or bacterized cultures of the dominant blue-green algae from a freshwater lake inhibited the growth of diatoms isolated from the same lake. Lake waters, collected during blue-green algal blooms, also inhibited diatom growth. In situ observations over a 5-year period indicate that diatom bloom populations vary inversely with the levels of the preceding blue-green al...

The green plants (Viridiplantae) are an ancient group of eukaryotes comprising two main clades: the Chlorophyta, which includes a wide diversity of green algae, and the Streptophyta, which consists of freshwater green algae and the land plants. The early-diverging lineages of the Viridiplantae comprise unicellular algae, and multicellularity has evolved independently in the two clades. Recent m...