Effects of the length of inundation periods on investment in tuber biomass and sexual reproduction by Vallisneria spinulosa SZ Yan Ramets

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院环境生物技术重点实验室

	Effects of the length of inundation periods on investment in tuber biomass and sexual reproduction by Vallisneria spinulosa SZ Yan Ramets
	Fox, A. D. ; Meng, F. ; Liu, J. ; Yang, W. ; Shan, K. ; Cao, L.
刊名	KNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS
	2014
卷号	1 期号:414 页码:-
关键词	China submerged plant reproduction Three Gorges Dam vegetative reproduction Yangtze River
ISSN号	1961-9502
中文摘要	Modification and reductions in flows are reducing inundation times in some Yangtze River wetlands, potentially affecting the growth of submerged macrophytes. The effects of shortening the inundation period from April to October (control) to April to September (treatment) were tested on the production of surface and below-ground tubers and fruits in individual Vallisneria spinulosa ramets in microcosm experiments. Mean numbers of below-ground tubers produced did not differ significantly between treatments, but individual tuber dry mass was significantly greater when harvested in October compared with plants harvested in September. Significantly more surface tubers were initiated by the ramets in the later harvest, but these did not differ in dry mass. Fewer ramets had initiated sexual reproduction by the September harvest compared with the October harvest. Almost all October fruits were mature, while the ratio of mature to unripe fruits was significantly greater than in September. There was no support for the hypothesis that more tubers were initiated deeper in the substrate with a longer inundation period to avoid predation by fish or birds. Based on these results, shortening of the inundation periods experienced by Vallisneria spinulosa plants in Yangtze River ephemeral wetlands may reduce the dry biomass of below-ground tubers and the production of surface tubers in this keystone macrophyte.
公开日期	2015-03-26
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/9655]
专题	生态环境研究中心_中国科学院环境生物技术重点实验室
推荐引用方式 GB/T 7714	Fox, A. D.,Meng, F.,Liu, J.,et al. Effects of the length of inundation periods on investment in tuber biomass and sexual reproduction by Vallisneria spinulosa SZ Yan Ramets[J]. KNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS,2014,1(414):-.
APA	Fox, A. D.,Meng, F.,Liu, J.,Yang, W.,Shan, K.,&Cao, L..(2014).Effects of the length of inundation periods on investment in tuber biomass and sexual reproduction by Vallisneria spinulosa SZ Yan Ramets.KNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS,1(414),-.
MLA	Fox, A. D.,et al."Effects of the length of inundation periods on investment in tuber biomass and sexual reproduction by Vallisneria spinulosa SZ Yan Ramets".KNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS 1.414(2014):-.