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Erik Jeppesen

Effect of clonal fragmentation on the growth of Vallisneria natans (Lour.) Hara at contrasting nutrient and light conditions

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  • Hui Peng, Hunan Agricultural University
  • ,
  • Dabing Ge, Hunan Agricultural University
  • ,
  • Guixiang Yuan, Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, Hunan Agricultural University, Jiangxi Provincial Key Laboratory of Water Resources and Environment of Poyang Lake, Jiangxi Institute of Water Sciences
  • ,
  • Dongsheng Zou, Hunan Agricultural University
  • ,
  • Hui Fu, Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, Hunan Agricultural University
  • ,
  • Erik Jeppesen

Clonal fragmentation (CF), caused by various disturbances, significantly affects the growth performance of plants. However, little is known about how CF affects the growth of submersed macrophytes facing light limitation and nutrient enrichment, a typically situation found in eutrophic lakes. To examine the effects of CF on Vallisneria natans (Lour.) Hara, a common submersed macrophyte species in warm lakes, we combined three different light intensities (4%, 15%, and 30% natural light) with three different nutrient levels in the water and kept the stolons severed or intact. We found that CF negatively affected the growth of V. natans and that the effect strongly depended on light and nutrient levels. Our comparison between severed and intact plants showed that CF decreased the biomass accumulation under moderate-light conditions, whereas no significant difference appeared at low and high light levels. The negative effect of CF on plant biomass tended to be more significant at moderate and high nutrient levels. The total chlorophyll content decreased with CF at moderate and high nutrient levels when light availability was high. Our study adds new information about the role of CF on the survival and growth of submersed macrophytes in eutrophic lakes.

Original languageEnglish
JournalHydrobiologia
Volume848
Issue4
Pages (from-to)903-912
Number of pages10
ISSN0018-8158
DOIs
Publication statusPublished - Feb 2021

Bibliographical note

Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG part of Springer Nature.

Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.

    Research areas

  • Eutrophic lake, Morphological traits, Plant biomass, Submersed macrophyte

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