Alpha species diversity measured by Shannon’s H-index: Some misunderstandings and underexplored traits, and its key role in exploring the trophodynamic stability of dynamic multiscapes

Herrera, Ada M.; Riera, Rodrigo; Rodríguez, Ricardo A.

doi:10.1016/j.ecolind.2023.111118

Cited by 5 publications

(2 citation statements)

References 72 publications

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“…No significant differences were found in bacterial community richness between biofilms and activated sludge in MBBR-IFAS systems ( p > 0.05). A larger Shannon index value and a smaller Simpson index value indicate more community diversity [ 27 , 28 , 29 ]. The Shannon indexes of biofilms and activated sludge were 4.75 ± 0.94 and 5.76 ± 0.02, respectively, and their Simpson indexes were 0.070 ± 0.059 and 0.014 ± 0.004, respectively.…”

Section: Resultsmentioning

confidence: 99%

Comparative Analysis of Bacterial Information of Biofilms and Activated Sludge in Full-Scale MBBR-IFAS Systems

Zhou,

Liu,

Fan

et al. 2024

Microorganisms

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This study extensively analyzed the bacterial information of biofilms and activated sludge in oxic reactors of full-scale moving bed biofilm reactor-integrated fixed-film activated sludge (MBBR-IFAS) systems. The bacterial communities of biofilms and activated sludge differed statistically (R = 0.624, p < 0.01). The denitrifying genera Ignavibacterium, Phaeodactylibacter, Terrimonas, and Arcobacter were more abundant in activated sludge (p < 0.05), while comammox Nitrospira was more abundant in biofilms (p < 0.05), with an average relative abundance of 8.13%. Nitrospira and Nitrosomonas had weak co-occurrence relationships with other genera in the MBBR-IFAS systems. Potential function analysis revealed no differences in pathways at levels 1 and 2 based on the Kyoto Encyclopedia of Genes and Genomes (KEGG) between biofilms and activated sludge. However, in terms of pathways at level 3, biofilms had more potential in 26 pathways, including various organic biodegradation and membrane and signal transportation pathways. In comparison, activated sludge had more potential in only five pathways, including glycan biosynthesis and metabolism. With respect to nitrogen metabolism, biofilms had greater potential for nitrification (ammonia oxidation) (M00528), and complete nitrification (comammox) (M00804) concretely accounted for methane/ammonia monooxygenase (K10944, K10945, and K10946) and hydroxylamine dehydrogenase (K10535). This study provides a theoretical basis for MBBR-IFAS systems from the perspective of microorganisms.

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Section: Resultsmentioning

confidence: 99%

Comparative Analysis of Bacterial Information of Biofilms and Activated Sludge in Full-Scale MBBR-IFAS Systems

Zhou,

Liu,

Fan

et al. 2024

Microorganisms

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“…However, the surveyed plant resources only provide basic data on a small scale, and measuring the diversity of urban spontaneous plants in large areas requires in-depth research. Many studies based on large spatial scales have verified the changes in species richness with spatial scales [76][77][78], but there were fewer studies analyzing the alpha diversity index and urban characteristics at small spatial scales. To this end, this study used the alpha diversity index to analyze the characteristics of urban spontaneous plant diversity in Nanjing and further investigated the relationship between plant diversity and green space characteristics at small spatial scales.…”

Section: Urban Parks Have a Rich Variety Of Spontaneous Plantsmentioning

confidence: 99%

Drivers of Spontaneous Plant Communities in Urban Parks: A Case from Nanjing, China

Xu,

Dai,

Ding

et al. 2024

Sustainability

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Urban plant diversity is one of the key elements for sustainable urban development. Urban plant landscapes not only create a variety of experiences for residents but also have a positive effect on their physiology and psychology. In order to better introduce nature into urban green spaces, this study conducted a field survey in Nanjing, China, to analyze the current situation of spontaneous plants in Nanjing’s urban green spaces and propose a plant planning strategy that takes into account both ecology and residents’ well-being. This study surveyed the herbaceous plant resources in 96 sample plots in nine typical urban parks in Nanjing, and recorded 284 plant species in 192 genera and 78 families. The research results show that the differences in plant diversity, richness, and evenness among urban parks in Nanjing are significant; combined with cluster analysis and ranking results, the total area of urban parks, green space construction time, lighting conditions, and management frequency have an impact on plant communities. Further analysis of the species composition of plant communities showed that moderate management frequency in urban parks can increase plant diversity. With the advantages of both high ecological benefits and low management costs, a model of “artificial plants + native spontaneous plants” was finally proposed for the planting of herbaceous plants in sustainable urban green spaces.

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A strategic roadmap for interdisciplinary modeling in ecology: The result of reading ‘Defining an ecological equation of state: Response to Riera et al. 2023′ (Newman et al., 2023)

Riera,

Fath,

Herrera

et al. 2024

Ecological Modelling

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Alpha species diversity measured by Shannon’s H-index: Some misunderstandings and underexplored traits, and its key role in exploring the trophodynamic stability of dynamic multiscapes

Cited by 5 publications

References 72 publications

Comparative Analysis of Bacterial Information of Biofilms and Activated Sludge in Full-Scale MBBR-IFAS Systems

Comparative Analysis of Bacterial Information of Biofilms and Activated Sludge in Full-Scale MBBR-IFAS Systems

Drivers of Spontaneous Plant Communities in Urban Parks: A Case from Nanjing, China

A strategic roadmap for interdisciplinary modeling in ecology: The result of reading ‘Defining an ecological equation of state: Response to Riera et al. 2023′ (Newman et al., 2023)

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