Soil resource availability is much more important than soil resource heterogeneity in determining the species diversity and abundance of karst plant communities

Yuan, Lei; Qi, Wang; He, Di; Xiang, Yunrong; Liu, Jinchun; Huang, Huimin; Chen, Miao; Tao, Jianping

doi:10.1002/ece3.8285

Cited by 12 publications

(7 citation statements)

References 121 publications

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“…Therefore, growing plants that can maintain soil fertility and establish a good microbial community is one way to prevent or reduce the degradation of arable land in karst areas and increase yield. However, for degraded karst ecosystems, studies mainly investigated changes in (1) soil quality (Zhang et al, 2021); (2) plant diversity (Liu et al, 2021); and (3) hydrological characteristics (Liu, Jiang, et al, 2022). For degraded karst ecosystems, the effect of human disturbance on other ecological components, such as different plant‐type communities of soil microbes and their relationships with environmental factors in the cultivated land, has not been well‐studied.…”

Section: Introductionmentioning

confidence: 99%

Plant types shape soil microbial composition, diversity, function, and co‐occurrence patterns in cultivated land of a karst area

Wei

et al. 2022

Land Degrad Dev

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Plants can alter microbial communities through root exudates, and change the characteristics of the soil. However, the relationship between soil microbial communities and environmental factors is not well understood. Here, we studied bacterial and fungal communities and their relationships with environmental factors. We integrated data of environmental factors, microbial composition, diversity, functional prediction, and co-occurrence network from uncultivated, maize, cabbage, and cocozelle soils in a karst area of Southwest China. Soil bacterial and fungal community composition differed with plant types. Maize soil had more taxa and greater alpha diversity of bacteria and fungi than other soils. In maize soil, the relative abundance of Actinobacteria and Ascomycota was significantly lower than that in uncultivated soil, while its contents of soil organic matter (OM), alkali-hydrolyzable nitrogen, and total nitrogen (TN) showed the opposite trend. These indicators were not significantly different between cabbage and cocozelle soils. The results of the Mantel test and the RDA analysis indicated that TN and OM were important drivers of bacterial and fungal communities. Functional prediction and network analysis showed that maize soil had a high nitrogen fixation capacity and a complex and stable network. To summarize, maize soil not had a low relative abundance of Ascomycota and high content of TN and OM, nitrogen fixation ability, and a rich microbial community. Therefore, cultivating maize is suitable for improving soil microbial community. These findings might help in formulating a reasonable cultivation management program to prevent land degradation in the karst areas.

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Section: Introductionmentioning

confidence: 99%

Plant types shape soil microbial composition, diversity, function, and co‐occurrence patterns in cultivated land of a karst area

Wei

et al. 2022

Land Degrad Dev

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“…It is well-known that different types and shapes of microplastics may differentially affect plant growth because they may differ in phytotoxicity ( Dong et al., 2020 ; Pignattelli et al., 2020 ; Li et al., 2022 ) and in the effect on soil physio-chemical properties and soil microbial communities such as soil microbial activity and mycorrhizal binding in plant roots ( de Souza Machado et al., 2019 ; Rillig et al., 2019 ; Lozano and Rillig, 2020 ; Lozano et al., 2021 ; Zhao et al., 2021 ). The promoted evenness of soil heterogeneity in the horizontal distribution of microplastics may be due to the increased microhabitat diversity, as observed in studies examining effects of soil heterogeneity in other factors ( Liu et al., 2021 ; Helbach et al., 2022 ). However, it is unclear what resulted in the decreased species evenness in the soil with the heterogeneous distribution of EPS, which seemed not to be related to the difference in the patch-level responses of individual plant species ( Figure S1 , Table S5 ).…”

Section: Discussionmentioning

confidence: 93%

Soil heterogeneity in the horizontal distribution of microplastics influences productivity and species composition of plant communities

Zhang

Cao²,

He³

et al. 2022

Front. Plant Sci.

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Contamination of soils by microplastics can have profound ecological impacts on terrestrial ecosystems and has received increasing attention. However, few studies have considered the impacts of soil microplastics on plant communities and none has tested the impacts of spatial heterogeneity in the horizontal distribution of microplastics in the soil on plant communities. We grew experimental plant communities in soils with either a homogeneous or a heterogeneous distribution of each of six common microplastics, i.e., polystyrene foam (EPS), polyethylene fiber (PET), polyethylene bead (HDPE), polypropylene fiber (PP), polylactic bead (PLA) and polyamide bead (PA6). The heterogeneous treatment consisted of two soil patches without microplastics and two with a higher (0.2%) concentration of microplastics, and the homogeneous treatment consisted of four patches all with a lower (0.1%) concentration of microplastics. Thus, the total amounts of microplastics in the soils were exactly the same in the two treatments. Total and root biomass of the plant communities were significantly higher in the homogeneous than in the heterogeneous treatment when the microplastic was PET and PP, smaller when it was PLA, but not different when it was EPS, HDPE or PA6. In the heterogeneous treatment, total and root biomass were significantly smaller in the patches with than without microplastics when the microplastic was EPS, but greater when the microplastic was PET or PP. Additionally, in the heterogeneous treatment, root biomass was significantly smaller in the patches with than without microplastics when the microplastic was HDPE, and shoot biomass was also significantly smaller when the microplastic was EPS or PET. The heterogeneous distribution of EPS in the soil significantly decreased community evenness, but the heterogeneous distribution of PET increased it. We conclude that soil heterogeneity in the horizontal distribution of microplastics can influence productivity and species composition of plant communities, but such an effect varies depending on microplastic chemical composition (types) and morphology (shapes).

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“…Compared to animals, our traitbased method appeared to work better when explaining support for abundant-centre patterns in plants, suggesting that other processes that remain untested here may contribute to the unexplained variation in observed abundance-distance patterns. These biotic and abiotic processes may include, but are not limited to, interspecific interactions (Goldberg and Barton 1992;Robertson 1996), spatiotemporal patterns in resource availability (Theodose and Bowman 1997;Liu et al 2021), climate and environmental suitability (Maitra et al 2022), geodiversity (Bailey et al 2018), and pressures from human activities (Lepczyk et al 2008;Jesse et al 2018). Our focus on species' dispersal capabilities responded to recent research (Santini et al 2018;Feng & Qiao 2022) which found dispersal to be one of the most important processes driving abundance-distance patterns at a global scale.…”

Section: Discussionmentioning

confidence: 99%

Species abundances often conform to ‘abundant-centre’ patterns depending on dispersal capabilities

Panter

Bachman

Baines

et al. 2023

Preprint

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A shared goal within macroecology, biogeography and population ecology research is to understand biodiversity patterns and the processes driving them across spatial and taxonomic scales. A common approach to study macroecological patterns and processes involves developing and testing ecogeographical rules or hypotheses. The much-debated "abundant-centre" hypothesis posits that species abundances are highest in their range centres and decline towards their range edges. We perform the largest global test of the hypothesis to date, on 3,675 species, using 6,055,549 abundance observations. Using meta-analytical approaches, we summarised species-level abundance-distance correlations exploring the effects of dispersal-related species traits on abundance-distance relationships. Overall, animals did not follow abundant-centre patterns, whereas plants tended to. Larger-bodied mammals were more likely to conform to abundant-centre patterns, as were mammals and freshwater fishes from higher latitudes. Perennial life cycles and large range sizes were significant predictors of abundant-centre patterns in plants. Trees and shrubs with larger seeds showed more support for abundant-centre patterns. Accounting for species dispersal improves models of abundant-centre patterns across geographic space. Assuming abundant-centre patterns represent optimal equilibria within nature, our findings suggest that abundant-centre relationships are not a general ecological phenomenon but tend to manifest only in species with higher dispersal capabilities.

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Soil resource availability is much more important than soil resource heterogeneity in determining the species diversity and abundance of karst plant communities

Abstract: This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 12 publications

References 121 publications

Plant types shape soil microbial composition, diversity, function, and co‐occurrence patterns in cultivated land of a karst area

Plant types shape soil microbial composition, diversity, function, and co‐occurrence patterns in cultivated land of a karst area

Soil heterogeneity in the horizontal distribution of microplastics influences productivity and species composition of plant communities

Species abundances often conform to ‘abundant-centre’ patterns depending on dispersal capabilities

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