Effects of Plant Diversity and Plant Density on Ecosystem Functions in Floating Constructed Wetlands

Han, Wenjuan; Sheng, Xiaoling; Shao, Jiongni; Jiang, Jia; He, Qinru; Lin, Ying Feng

doi:10.1007/s11270-020-04913-3

Cited by 6 publications

(2 citation statements)

References 35 publications

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“…Our results show that high density of conspecifics reduced performance of the first-generation offspring of S. polyrhiza, likely due to strong intraspecific competition (Driever et al, 2005;Han et al, 2020). Importantly, the competition environment of the parental generation influenced the performance of the second-and third-generation offspring of S. polyrhiza, as reported before (Miao et al, 1991).…”

Section: Discussionsupporting

confidence: 71%

Transgenerational competition effects persist across multiple generations and are altered by offspring competitive environments in a clonal plant

Jin

Chen

Lei

et al. 2023

Plant Species Biology

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Environments experienced by parental plants may potentially influence the performance of their offspring. These effects may also vary depending on the current environment experienced by the offspring. However, whether these transgenerational effects, especially those induced by biotic factors such as competition, can persist for multiple generations has not been tested. Here, we examined intraspecific competition‐induced transgenerational effects across multiple generations using a floating clonal plant Spirodela polyrhiza, by growing three successive generations each under either low or high density. The second‐generation offspring performed better when the first‐generation plants were grown under low than under high density, independently of the density experienced by the second generation. The third‐generation offspring performed better under low than under high density, and the difference was more pronounced when the second‐generation plants were grown under low density. Moreover, the density of the first and second generation interacted to influence the morphology of the third‐generation offspring. These results indicate that competition‐induced transgenerational effects in S. polyrhiza can vary depending on the competition environment of its offspring and that these effects can persist across multiple generations.

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Section: Discussionsupporting

confidence: 71%

Transgenerational competition effects persist across multiple generations and are altered by offspring competitive environments in a clonal plant

Jin

Chen

Lei

et al. 2023

Plant Species Biology

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“…However, a process-based model "hybrid-maize" indicated that the optimal PD could be more than 80,000 plants ha −1 (Liu et al, 2021). Generally, increases in PD would promote the allocation of organic C in soil, which in turn affected the nitrogen (N) transportation and absorption (Han et al, 2020). Nitrogen, an essential nutrient required for crop growth and grain yield (GY), is often applied in the chemical or organic form to soil.…”

Section: Introductionmentioning

confidence: 99%

Appropriate dense planting with N fertilisation increased maize grain yield and soil organic carbon

Zhu

Zhao

Wang

et al. 2023

Zemdirbyste-Agriculture

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Soil organic carbon (SOC) fractions and soil enzyme activities were effective indicators to represent C changes under different plant densities (PD) and nitrogen (N) application levels, which influenced crop yield in turn. The aim of the experiment was to investigate the impact of PD and N application levels on soil productivity. The experiment conducted in the North China Plain included three plant densities: 1) PD1 -60,000 plants ha −1 , 2) PD2 -67,500 plants ha −1 , and 3) PD3 -75,000 plants ha −1 , and three N application levels: 1) N0 -0 kg ha −1 N, 2) N1 -220 kg ha −1 N, and 3) N2 -290 kg ha −1 N. Maize (Zea mays L.) grain yield was higher when N was applied at the N1 and N2 application levels each year. Obviously, the grain yield and its components at the N1 and N2 application levels showed no difference at each PD, and vice versa. Plant densities and N fertilisation rates significantly affected the content of SOC, microbial biomass C (MBC), and dissolved organic C (DOC). Ranged from 1.85 to 1.98 mg d g −1 , the sucrase activity was larger in the treatment with a high PD and N fertilisation rate. Higher PD yielded the increase of grain yield (GY) by 19.38%, while the kernel number per ear (KN) and the 1,000-kernel weight (TKW) were decreased by 7.81% and 9.03%, respectively. In addition, the grain yield and yield components were dramatically increased at the N2 application level. The SOC content and its fractions and the sucrase activity were also increased with the PD and N fertilisation rate. These results indicated that the optimum PD and N fertilisation rates were benefits for increasing the grain yield and soil C storage. Considering both soil parameters and grain yield, the PD of 75,000 plants ha −1 and the N fertilisation rate of 220 kg ha −1 N were benefits for crop production and soil sustainability.

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Water purification capacity of ecological ditch: A systematic review and meta-analysis of influencing factors

Shen,

Hou,

et al. 2024

Ecological Engineering

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Effects of Plant Diversity and Plant Density on Ecosystem Functions in Floating Constructed Wetlands

Cited by 6 publications

References 35 publications

Transgenerational competition effects persist across multiple generations and are altered by offspring competitive environments in a clonal plant

Transgenerational competition effects persist across multiple generations and are altered by offspring competitive environments in a clonal plant

Appropriate dense planting with N fertilisation increased maize grain yield and soil organic carbon

Water purification capacity of ecological ditch: A systematic review and meta-analysis of influencing factors

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