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Effects of benthivorous fish disturbance on chlorophyll a contents in water and the growth of two submersed macrophytes with different growth forms under two light regimes
Chen, Jianfeng1,2; Liu, Zugen2; Xiao, Shuifusheng1; Chen, Ruizhen1; Luo, Congqiang4; Zhu, Tianshun5; Cao, Te3; Ni, Leyi3; Xie, Ping3; Su, Haojie2,3; Zhang, Meng2
2020-02-20
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume704Issue:1Pages:10
Abstract

Low underwater light availability and benthivorous fish-mediated disturbance are two important factors that influence the growth of submersed macrophytes. However, the combined effects of these factors remain unclear. To determine the combined effects of low light and fish-mediated disturbance on the growth of two submersed macrophytes with contrasting growth forms, i.e., Vallisneria natans and Hydrilla verticillata, we conducted an outdoor mesocosm experiment with a two-by-two factorial design. The experiment involved two fish-mediated disturbance levels (0 and 1 Misgurnus anguillicaudatus) crossed with two levels of light intensity (ambient light and a low-light environment created by culturing the macrophytes under a shelter). The results showed that the chlorophyll a (chl a) concentration in the overlying water showed no difference among treatments for each macrophyte species. The fish-mediated disturbance significantly decreased the relative growth rate (RGR) of both species in the low-light environment but showed no effects in the ambient light environment. Low light availability and/or fish-mediated disturbance led to increased plant heights of both species compared with the heights under the ambient light regime. Low light availability combined with fish-mediated disturbance significantly reduced the ramet number and soluble carbohydrate (SC) content of both species; however, the free amino acid (FAA) content was not affected. Compared to V. natans, H. verticillata exhibited a high RGR and high ramet numbers in a low-light environment combined with fish-mediated disturbance. Our results indicated that the adaptability of H. verticillata is better than that of V. natans in turbid, shallow and hydrostatic water. Fish-mediated disturbance can negatively influence submersed macrophyte recovery in lakes when light is not abundant. (C) 2019 Elsevier B.V. All rights reserved.

KeywordMisgurnus anguillicaudatus Free amino acid Soluble carbohydrate Chlorophyll a Ramet
DOI10.1016/j.scitotenv.2019.135269
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000504672800051
WOS KeywordCOMMON CARP ; COMMUNITY COMPOSITION ; VALLISNERIA-NATANS ; RESPONSES ; STRESS ; EUTROPHICATION ; AVAILABILITY ; METABOLISM ; SHADE ; LAKES
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/35225
Collection淡水生态学研究中心_期刊论文
Corresponding AuthorSu, Haojie; Zhang, Meng
Affiliation1.Jiujiang Univ, Poyang Lake Ecoecon Res Ctr, Jiangxi Prov Engn Res Ctr Ecol Chem Ind, Jiujiang 332005, Peoples R China
2.Jiangxi Acad Environm Sci, 1131 Hongdu North Rd, Nanchang 330039, Jiangxi, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Hubei, Peoples R China
4.Hunan Univ Arts & Sci, Collaborat Innovat Ctr Efficient & Hlth Prod Fish, Key Lab Hlth Aquaculture & Prod Proc Dongting Lak, Changde 415000, Peoples R China
5.Zaozhuang Univ, Coll Life Sci, Zaozhuang 277160, Peoples R China
Recommended Citation
GB/T 7714
Chen, Jianfeng,Liu, Zugen,Xiao, Shuifusheng,et al. Effects of benthivorous fish disturbance on chlorophyll a contents in water and the growth of two submersed macrophytes with different growth forms under two light regimes[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,704(1):10.
APA Chen, Jianfeng.,Liu, Zugen.,Xiao, Shuifusheng.,Chen, Ruizhen.,Luo, Congqiang.,...&Zhang, Meng.(2020).Effects of benthivorous fish disturbance on chlorophyll a contents in water and the growth of two submersed macrophytes with different growth forms under two light regimes.SCIENCE OF THE TOTAL ENVIRONMENT,704(1),10.
MLA Chen, Jianfeng,et al."Effects of benthivorous fish disturbance on chlorophyll a contents in water and the growth of two submersed macrophytes with different growth forms under two light regimes".SCIENCE OF THE TOTAL ENVIRONMENT 704.1(2020):10.
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