Projects per year
Abstract
The management of river-lake systems is hindered by limitations in the applicability of existing models that describe the relationship between environmental factors and phytoplankton community characteristics but rarely include common and indirect effects on algae dynamics. In this study, we assumed that the interaction of light, water, temperature, pH, and nutrients, including direct and indirect effects, are the potential factors affecting phytoplankton dynamics. We determined which of these are the main drivers of phytoplankton community structure and production in a river-lake system by using three different models based on the partial least squares structural equation modeling method. Our results indicated that the models achieved more than 60% of the overall explanatory power of various environmental factors on phytoplankton characteristics, including indirect and direct effects. In particular, light, pH, and nutrient content and ratios commonly control phytoplankton dynamic characteristics rather than a single nutrient, but light is the main driving force of phytoplankton community characteristics. Controlling the underwater light conditions, and nitrogen and phosphorus pollution load could effectively regulate algal blooms, increase productivity, promote ecological balance, and reduce water pollution. Our findings provide a scientific and theoretical basis for water resource management and pollution control.
Original language | English |
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Article number | 124633 |
Number of pages | 13 |
Journal | Journal of Hydrology |
Volume | 583 |
Early online date | 30 Jan 2020 |
DOIs | |
Publication status | Published - 1 Apr 2020 |
Keywords
- phytoplankton community
- gross primary productivity
- biodiversity
- environmental factor
- Poyang Lake
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Dive into the research topics of 'Identifying the main drivers of change of phytoplankton community structure and gross primary productivity in a river-lake system'. Together they form a unique fingerprint.Projects
- 1 Finished
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SPECTRA: Soil processes and ecological services in the karst critical zone of Southwest China
Buss, H. L. (Principal Investigator), Johnes, P. J. (Co-Principal Investigator) & Evershed, R. P. (Co-Principal Investigator)
1/01/16 → 31/12/18
Project: Research