Effects of polypropylene micro(nano)plastics on soil bacterial and fungal community assembly in saline-alkaline wetlands

The Science of The Total Environment, Год журнала: 2024, Номер 945, С. 173890 - 173890

Опубликована: Июнь 15, 2024

Язык: Английский

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Mitigating invasive species using biochar derived from invasive plants in saline‐alkaline wetland plant communities dominated by Amaranthus palmeri

Applied Vegetation Science, Год журнала: 2024, Номер 27(3)

Опубликована: Июль 1, 2024

Abstract Aims Effective prevention and management of biological invasions are crucial. One promising approach involves introducing biochar to invaded plant communities modify interspecific relationships among invasive native plants, ultimately aiding in the suppression species. This study aimed explore effects invasive‐plant on an established community. Location Tianjin coastal saline‐alkaline wetland, China (38°46′ N, 117°34′ E). Methods Invaded were using soils from Amaranthus palmeri‐ wetland with intact seed bank, incorporating derived A . palmeri Spartina alterniflora into soil at 0%, 1%, 3%, 5% addition rates (m/m). Plant above‐ground biomass, height, stem diameter, abundance, α / β ‐diversity, niche breadth, species co‐occurrence networks analyzed. Results The significantly decreased performance measures rate had a more substantial impact community structure than type used. There was decrease abundance A. increase plants across most treatments, S. exhibiting pronounced effect compared biochar. Invasive‐plant affected breadth other dominant species, particularly higher rates, resulting reduced overlap. At rate, contrasting complexity within Phylogenetic ‐diversities correlated stochastic processes primarily governed assembly all treatments. Conclusions Our findings underscore potential mitigate dominated by offers avenue for managing restoring

Язык: Английский

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Microplastic-contamination can reshape plant community by affecting soil properties

Ecotoxicology and Environmental Safety, Год журнала: 2024, Номер 283, С. 116844 - 116844

Опубликована: Авг. 10, 2024

Microplastics, as emerging contaminants, pose a serious threat to terrestrial ecosystems, yet their impact on plant communities remains largely unexplored. This study utilized the soil seed bank establish naturally germinated and investigated effects of polyethylene (PE) polypropylene (PP) community characteristics. Additionally, aimed elucidate mechanisms by which variations in properties influenced community. The results indicated that microplastics led significant increase available potassium (AK), likely due alterations microorganism proliferation. Furthermore, caused decrease salinity, total phosphorus (TP), ammonium nitrogen (AN). composition shifted, resulting reduced stability niche breadth dominant species. Microplastics also impacted overlap interspecific associations among species, possibly accessibility resources for Salinity, AK, TP were identified major drivers changes breadth, overlap, stability, with exerting strongest composition. These findings provide valuable insights restoration coastal saline-alkali wetland contaminated microplastics.

Язык: Английский

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Ecosystem compartment stoichiometry drives the secondary succession processes of zokor‐disturbed grassland

European Journal of Soil Science, Год журнала: 2024, Номер 75(5)

Опубликована: Сен. 1, 2024

Abstract In terrestrial ecosystems, resource availability and soil microbial biomass are substantially changed with ecological recovery. However, the shifts in stoichiometry often do not align, leading to stoichiometric imbalance that constrains growth and, consequently, affects plant community succession. The mechanisms by which microbes acclimate these imbalances how such adjustments influence dynamics remain largely unexplored alpine grasslands. To address processes, we examined during secondary succession of zokor‐disturbed grassland on Qinghai–Tibet Plateau, China, utilizing a space‐for‐time substitution approach. Carbon (C), nitrogen (N) phosphorus (P) contents across plant–soil–microbe ecoenzymatic activities involved nutrient acquisition were measured. results indicated C:P N:P between their resources intensified recovery grassland. This led limitation growth, as mean vector angles exceeding 45° decreased threshold element ratio C:P. response, increased production P‐acquiring enzymes mitigate P limitation. Through structural equation modelling (SEM), found C:N:P ratios within systems explained 74.5% total variance aboveground biomass. We concluded maintaining balanced systems, facilitated activities, enhances diversity net primary productivity

Язык: Английский

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Nitrogen Deposition Modulates Invasibility and Stability of Plant Communities in Microplastic-Contaminated Wetlands

Global Ecology and Conservation, Год журнала: 2024, Номер unknown, С. e03314 - e03314

Опубликована: Ноя. 1, 2024

Язык: Английский

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