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Wetlands

, Volume 38, Issue 6, pp 1147–1157 | Cite as

Spatial and Seasonal Dynamics of Water Quality, Sediment Properties and Submerged Vegetation in a Eutrophic Lake after Ten Years of Ecological Restoration

  • Changdong Ye
  • Lu Yao
  • Amei Deng
  • Guihua Liu
  • Wenzhi LiuEmail author
Wetlands in the Developing World

Abstract

Eutrophication has caused many serious environmental issues in lakes. Submerged vegetation, which plays a key role in maintaining the clear water state of shallow lakes, is strongly influenced by water quality and sediment properties. In this study, we seasonally investigated the water quality, sediment properties and submerged plant communities in 18 sites in Lake Honghu of China, an internationally important wetland under the Ramsar Convention. Results indicated that most of the water quality parameters and sediment properties showed no significant difference among the three site types (i.e., perennially vegetated, seasonally vegetated and unvegetated). However, the Secchi depth in perennially and seasonally vegetated sites was significantly higher that in unvegetated sites. By contrast, season had a strong effect on most of the water quality parameters and sediment properties (e.g., water chlorophyll-a concentration). For submerged vegetation, species richness and biomass showed significant spatial but not seasonal differences, with higher richness and biomass in perennially vegetated sites. Canonical correspondence analysis indicated that the distribution of submerged plants was mainly determined by water NH4+ concentration and water depth. Our findings suggest that restoration of submerged vegetation in Chinese eutrophic lakes may be a feasible method for improving water environments and enhancing ecological functions.

Keywords

Aquatic plants Eutrophication Nutrients Sediments Water depth 

Notes

Acknowledgements

We thank Ziqian Xiong, Bei Lu, Xiaoliang Jiang, Wenyang Li, and Han Liu for their assistance with the field sampling and laboratory analyses. This research was funded by the National Science Foundation of China (Grant No. 31570535).

Supplementary material

13157_2018_1021_MOESM1_ESM.docx (26 kb)
ESM 1 (DOCX 26 kb)

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Copyright information

© Society of Wetland Scientists 2018

Authors and Affiliations

  • Changdong Ye
    • 1
    • 2
  • Lu Yao
    • 2
  • Amei Deng
    • 3
  • Guihua Liu
    • 2
  • Wenzhi Liu
    • 2
    Email author
  1. 1.Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape ArchitectureSouth China Agricultural UniversityGuangzhouChina
  2. 2.Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical GardenChinese Academy of SciencesWuhanChina
  3. 3.Wuhan Library and Intelligence Centre of the Chinese Academy of SciencesWuhanChina

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