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Shallow lakes at risk: Nutrient enrichment enhances top-down control of macrophytes by invasive herbivorous snails

文献类型：期刊论文

作者Liu, Ying4,5; He, Liang4,5; Hilt, Sabine3; Wang, Rui2; Zhang, Huan1; Ge, Gang2,4,5
刊名FRESHWATER BIOLOGY
出版日期2020-11-23
页码11
ISSN号0046-5070
关键词eutrophication herbivory Pomacea canaliculata regime shift submerged macrophyte
DOI10.1111/fwb.13649
通讯作者He, Liang(lianghe@ncu.edu.cn)
英文摘要In shallow lakes, submerged macrophytes can stabilise clear-water conditions and prevent phytoplankton blooms. Nutrient enrichment can promote their abundance. Above critical thresholds in water nutrient concentrations, however, submerged macrophytes have collapsed in many lakes worldwide with negative consequences for important ecosystem functions. The mechanisms behind this decline are complex and subject to debate. We conducted mesocosm and laboratory experiments to investigate the top-down effect of invasive herbivorous snails (Pomacea canaliculata) on native submerged macrophytes (Vallisneria natans) under low and moderate nutrient treatment. We tested whether effects of nutrient addition to the water column on snail herbivory were influenced by shading by phytoplankton and epiphyton, macrophyte elemental tissue content and snail nutrient release. We found that herbivorous snails had strong negative top-down effects on macrophytes, which were amplified by nutrient enrichment in the water column leading to higher macrophyte consumption rates. In moderate nutrient treatment, macrophyte consumption was faster and snails grew better than in low nutrient treatment. Additionally, snail treatments had higher nitrogen concentrations in the water leading to a negative feedback loop. Our results suggest that snail herbivory may increase the chance for macrophyte collapse and shifts of shallow lakes to turbid states, and this effect occurs at lower snail densities when nutrient concentrations increase. Shallow lakes are thus severely at risk from projected increases in nutrient loading and spread of invasive herbivorous molluscs.
WOS关键词PLANT SECONDARY METABOLITES ; FRESH-WATER MACROPHYTES ; REGIME SHIFTS ; SUBMERGED MACROPHYTES ; POMACEA-CANALICULATA ; VALLISNERIA-NATANS ; LIFE-HISTORY ; PALATABILITY ; IMPACT ; LIGHT
资助项目National Natural Science Foundation of China[31700402] ; Science and Technology Project of Department of Water Resources of Jiangxi Province[201820YBKT22] ; Key R&D Program of Jiangxi Province[20171BBH80019]
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology
语种英语
出版者WILEY
WOS记录号WOS:000591555100001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Key R&D Program of Jiangxi Province ; Key R&D Program of Jiangxi Province ; Key R&D Program of Jiangxi Province ; Key R&D Program of Jiangxi Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Key R&D Program of Jiangxi Province ; Key R&D Program of Jiangxi Province ; Key R&D Program of Jiangxi Province ; Key R&D Program of Jiangxi Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Key R&D Program of Jiangxi Province ; Key R&D Program of Jiangxi Province ; Key R&D Program of Jiangxi Province ; Key R&D Program of Jiangxi Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Science and Technology Project of Department of Water Resources of Jiangxi Province ; Key R&D Program of Jiangxi Province ; Key R&D Program of Jiangxi Province ; Key R&D Program of Jiangxi Province ; Key R&D Program of Jiangxi Province
源URL[http://ir.ihb.ac.cn/handle/342005/39327]  
专题水生生物研究所_淡水生态学研究中心_期刊论文
通讯作者He, Liang
作者单位1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan, Peoples R China
2.Nanchang Univ, Sch Life Sci, Nanchang, Jiangxi, Peoples R China
3.Leibniz Inst Freshwater Ecol & Inland Fisheries, Berlin, Germany
4.Nanchang Univ, Sch Resources Environm & Chem Engn, Nanchang, Jiangxi, Peoples R China
5.Nanchang Univ, Minist Educ, Key Lab Poyang Lake Environm & Resource Utilizat, Nanchang, Jiangxi, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Ying,He, Liang,Hilt, Sabine,et al. Shallow lakes at risk: Nutrient enrichment enhances top-down control of macrophytes by invasive herbivorous snails[J]. FRESHWATER BIOLOGY,2020:11.
APA Liu, Ying,He, Liang,Hilt, Sabine,Wang, Rui,Zhang, Huan,&Ge, Gang.(2020).Shallow lakes at risk: Nutrient enrichment enhances top-down control of macrophytes by invasive herbivorous snails.FRESHWATER BIOLOGY,11.
MLA Liu, Ying,et al."Shallow lakes at risk: Nutrient enrichment enhances top-down control of macrophytes by invasive herbivorous snails".FRESHWATER BIOLOGY (2020):11.

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来源：水生生物研究所

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