Abstract
This study reports on the effects of dissolved organic matter (DOM) derived from the aquatic macrophyte Pistia stratiotes (collected from a tropical reservoir) on the mixotrophic growth of two phytoplankton species (Chlamydomonas moewusii and Anabaena sp.). The DOM from P. stratiotes had a mainly aliphatic structure, low molecular weight, low cellulose and lignin content and high carbon content. The addition of DOM (5% v/v) significantly decreased the growth rate of Anabaena sp. but increased the chlorophyll a concentration of C. moewusii. Higher light intensity (100 versus 30 µmol m−2 s−1) was important for Anabaena sp., increasing its growth rate and chlorophyll content. The use of DOM from P. stratiotes to mitigate cyanobacterial blooms should be further explored in future studies.
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Acknowledgments
We would like to the thank Fundação de Amparo à Pesquisa do Estado de São Paulo—FAPESP (Process number 2012/21829-0) for the financial support and K. J. Murphy for the English review of this paper. Moreover, we would also like to thank three anonymous reviewers for their valuable comments for improving the manuscript.
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Bottino, F., Vargas, S.R., Miwa, A.C.P. et al. Effects of macrophyte leachate on Anabaena sp. and Chlamydomonas moewusii growth in freshwater tropical ecosystems. Limnology 19, 171–176 (2018). https://doi.org/10.1007/s10201-017-0532-0
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DOI: https://doi.org/10.1007/s10201-017-0532-0