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Clonal performance of Scirpus yagara in multiple levels of substrate heterogeneity and submergence
Journal of Plant Ecology ( IF 2.7 ) Pub Date : 2021-03-31 , DOI: 10.1093/jpe/rtab033
Tong Wang 1 , Liyu Yang 2, 3 , Runyu Shao 1 , Jiangtao Hu 4 , Chunhua Liu 4 , Dan Yu 4
Affiliation  

Abstract
Aims
Environmental heterogeneity affects the performance of clonal aquatic plants. Few researchers integrated two aspects of heterogeneity into the study of clonal plant ecology. The aims of the present study are to (i) test whether different substrate heterogeneity and submergence exert similar effects on plant performance and (ii) explore the foraging behaviour.
Methods
In this study, Scirpus yagara was subjected to multiple levels of substrate heterogeneity and submergence. Substrate treatments included one homogeneous substrate and three heterogeneous substrates (two-patch, four-patch and eight-patch). Water level treatments included 0, 10 and 30 cm. Traits including ramet number, generation number, leaf number, bulb number, ramet height, culm length, rhizome length, clonal radius, spacer length, spacer thickness, total biomass, biomass of bulbs and biomass per bulb were measured.
Important Findings
Deeper water levels significantly reduced variables associated with growth such as ramet number, generation number, leaf number and bulb number, while substrate patchiness induced significant variations in traits such as spacer length and spacer thickness. Significant interactive effects of the two factors were found for ramet number, leaf number and spacer length. Scirpus yagara showed colonization towards the lake sediment patch in two-patch and four-patch substrates, and more structures were placed in the lake sediment patch. Especially for the two-patch substrate, all structures occupied the lake sediment patch. Two-sided intrusion was observed in the eight-patch substrate, which induced an even allocation of structures in different patches. The foraging behaviour was correlated with the patch size.


中文翻译:

Scirpus yagara 在多水平底物异质性和淹没中的克隆性能

摘要
宗旨
环境异质性影响无性系水生植物的性能。很少有研究人员将异质性的两个方面整合到克隆植物生态学的研究中。本研究的目的是 (i) 测试不同的底物异质性和淹没是否对植物性能产生相似的影响,以及 (ii) 探索觅食行为。
方法
在这项研究中,Scirpus yagara受到多层次的底物异质性和淹没。基材处理包括一种均质基材和三种异质基材(两片、四片和八片)。水位处理包括 0、10 和 30 厘米。测量了包括分株数、世代数、叶数、鳞茎数、分株高度、秆长度、根茎长度、克隆半径、间隔长度、间隔厚度、总生物量、鳞茎生物量和每个鳞茎生物量的性状。
重要发现
更深的水位显着减少了与生长相关的变量,如分株数、代数、叶数和球茎数,而基质斑块导致间隔长度和间隔厚度等性状的显着变化。发现这两个因素对分株数、叶数和间隔长度有显着的交互作用。Scirpus yagara在两片和四片基质中向湖泊沉积物斑块移殖,并且在湖泊沉积物斑块中放置了更多的结构。特别是对于二斑块基底,所有构造都占据了湖泊沉积斑块。在八贴片基板中观察到两侧侵入,这导致不同贴片中结构的均匀分配。觅食行为与斑块大小相关。
更新日期:2021-05-28
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