Spatiotemporal variability of phytoplankton functional groups in a shallow eutrophic lake from cold, arid regions
- 15 May 2020
- journal article
- research article
- Published by Springer Science and Business Media LLC in Environmental Monitoring and Assessment
- Vol. 192 (6), 1-21
- https://doi.org/10.1007/s10661-020-08349-4
Abstract
In the shallow eutrophic lakes in cold, arid regions, the phytoplankton functional groups and the factors that drive their spatiotemporal variabilities remain unclear. Samples were collected from Lake Ulansuhai in April, August, and October 2017 (wet season) and January 2018 (dry season). Based on the functional group classification method, 23 phytoplankton functional groups with 5 major ones were identified. During the wet season, high amounts of nutrients, elevated temperatures, and heavy rainfall produced spatiotemporal variabilities in phytoplankton communities, whereas during the dry season, the frozen period was the critical factor that determined the spatiotemporal variabilities in the phytoplankton communities. Through redundancy analyses, total nitrogen and total phosphorus concentrations were observed to directly affect the phytoplankton growth; algal growth affected the chemical oxygen demand, and pH and environmental factors interacted with the phytoplankton growth. These results highlight the complex feedbacks of shallow eutrophic lake ecosystems in arid regions. Group TC (represented by Lyngbya) was correlated with Huangtai algae. In August, a Huangtai algal bloom resulted in a relatively stable water column, which was conducive to group TC growth. Therefore, the presence of certain phytoplankton functional groups can indicate the current lake conditions by identifying the coverage of Huangtai algae, which provides a scientific basis for an early warning of a potential algal bloom.Funding Information
- Science and Technology Major Project on Lakes of Inner Mongolia (ZDZX2018054)
- National Natural Science Foundation of China (51869014, 51469018, 41701281)
- Major Project in Inner Mongolia Autonomous Region and the National Key Research and Development Program of China (2016YFC0500508)
- the Key Scientific and Technological Project of Inner Mongolia (Grant No. 2019GG019)
This publication has 45 references indexed in Scilit:
- Seasonal dynamics of phytoplankton and its relationship with the environmental factors in Dongping Lake, ChinaEnvironmental Monitoring and Assessment, 2012
- Driving factors of the phytoplankton functional groups in a deep Mediterranean reservoirWater Research, 2010
- Are indicator groups and cross-taxon congruence useful for predicting biodiversity in aquatic ecosystems?Ecological Indicators, 2010
- Diatoms as indicators of lake eutrophicationPublished by Cambridge University Press (CUP) ,2010
- Diel vertical migration of Peridiniopsis niei, Liu et al., a new species of dinoflagellates in an eutrophic bay of Three-Gorge Reservoir, ChinaAquatic Ecology, 2009
- Vertical migration of the toxic dinoflagellate Gymnodinium catenatum under different concentrations of nutrients and humic substances in cultureHarmful Algae, 2006
- Towards a functional classification of the freshwater phytoplanktonJournal of Plankton Research, 2002
- Trophic structure, species richness and biodiversity in Danish lakes: changes along a phosphorus gradientFreshwater Biology, 2000
- Advantages from diel vertical migration can explain the dominance of Gonyostomum semen (Raphidophyceae) in a small, steeply-stratified humic lakeJournal of Plankton Research, 2000
- Species Diversity in Lacustrine Phytoplankton. I. The Components of the Index of Diversity from Shannon's FormulaThe American Naturalist, 1969