Abstract
The functional group (FG) system sensu Colin S. Reynolds of freshwater phytoplankton has been widely applied in many aspects of freshwater ecological assessments. However, there is no current consensus as to how and to why some functional coda shows multiple habitat templates in different water bodies. To test whether there are multiple habitat templates for some functional coda in the FG system, we used two mesotrophic deep reservoirs in China as examples, analysing phytoplankton taxonomic and environmental data collected in 4 seasons over two years. Results showed that a large proportion of the indicators had similar habitat templates within the FG system, whilst some species had multiple or different habitat templates according to their niche differentiation. The random forest (RF) model filtered a minimum set of environmental conditions and provided two potential habitat templates for Oocystis lacustris. One explanatory habitat template of clear water provided by the FG system was verified in the Nanwan Reservoir, and the other habitat template of high dissolved inorganic nitrogen (DIN) was found in the Nianyushan Reservoir. Further studies of the potential multiple habitat templates for some functional coda are recommended for its proper use.
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Acknowledgements
We appreciate the help from all the colleagues at the administrations of the Nanwan and Nianyushan Reservoirs. They helped me to complete the field sampling work.
Funding
The work was funded by the earmarked fund for China Agriculture Research System (CARS-50), the National Natural Science Foundation of China (Grant Nos. U1904124, 31400397), and the Major Public Welfare Projects in Henan Province (Grant No. 201300311300).
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MZ: Conceptualization, Investigation, Writing—original draft, Funding acquisition. XL, JD, YG, JZ, XG and ML: Investigation, Resources, Validation. XL: Supervision, Project administration.
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Zhang, M., Lv, X., Dong, J. et al. Multiple habitat templates for phytoplankton indicators within the functional group system. Hydrobiologia 850, 5–19 (2023). https://doi.org/10.1007/s10750-022-05024-2
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DOI: https://doi.org/10.1007/s10750-022-05024-2