Land conversion to agriculture induces taxonomic homogenization of soil microbial communities globally

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 29, 2024

Abstract Agriculture contributes to a decline in local species diversity and above- below-ground biotic homogenization. Here, we conduct continental survey using 1185 soil samples compare microbial communities from natural ecosystems (forest, grassland, wetland) with converted agricultural land. We combine our results global meta-analysis of available sequencing data that cover more than 2400 across six continents. Our combined demonstrate land conversion taxonomic functional homogenization bacteria, mainly driven by the increase geographic ranges taxa croplands. find 20% phylotypes are decreased 23% increased conversion, croplands enriched Chloroflexi, Gemmatimonadota, Planctomycetota, Myxcoccota Latescibacterota . Although there is no significant difference composition between land, genes involved nitrogen fixation, phosphorus mineralization transportation depleted cropland. provide insight into consequences land-use change on diversity.

Language: Английский

---

Stable Soil Biota Network Enhances Soil Multifunctionality in Agroecosystems

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(1)

Published: Jan. 1, 2025

ABSTRACT Unraveling how agricultural management practices affect soil biota network complexity and stability these changes relate to processes functions is critical for the development of sustainable agriculture. However, our understanding knowledge still remains unclear. Here, we explored effects intensity on complexity, stability, multifunctionality, as well relationships among factors. Four typical land use types representing a gradient disturbance were selected in calcareous red soils southwest China. The four with increasing included pasture, sugarcane farmland, rice paddy fields, maize cropland. cohesion, topological features (e.g., average degree, clustering coefficient, path length, diameter, graph density, modularity), variation degree used evaluate strength interactions between species, respectively. results showed that intensive increased species competition but decreased stability. Soil microfauna nematode, protozoa, arthropoda) stabilized entire through top‐down control. rather than or biodiversity predicted dynamics multifunctionality. Specifically, stable communities, both organism groups archaea, bacteria, fungi, arthropoda, viridiplantae, viruses), support high In particular, had more contributions multifunctionality microbial communities. This result was further supported by analysis, which modules 1 4 greater numbers explained Our study highlights should be considered key factor improving sustainability crop productivity context global intensification.

Language: Английский

---

Trees shape the soil microbiome of a temperate agrosilvopastoral and syntropic agroforestry system

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 9, 2025

Agroforestry systems are multifunctional land-use that promote soil life. Despite their large potential spatio-temporal complexity, the majority of studies investigated organisms in temperate cropland agroforestry focused on rather non-complex systems. Here, we topsoil and subsoil microbiome two complex innovative alley cropping systems: an agrosilvopastoral system combining poplar trees, crops, livestock a syntropic 35 tree shrub species with forage crops. Increasing depth resulted decline bacterial fungal richness community shift towards oligotrophic taxa both systems, which attribute to resource-deprived conditions subsoil. At each depth, rows was compositionally distinct from crop rows. We detected beneficial microorganisms as well putative phytopathogens under trees compared Finally, based our results dissimilarity, found open without spatial heterogeneity introduced by translated into less homogeneous microbiome, highlighting counteract homogenization through agriculture.

Language: Английский

---

New insights into assembly processes and driving factors of urban soil microbial community under environmental stress in Beijing

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 947, P. 174551 - 174551

Published: July 6, 2024

Language: Английский

---

Soil bacterial community composition is altered more by soil nutrient availability than pH following long-term nutrient addition in a temperate steppe

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: Sept. 13, 2024

Although aboveground biodiversity has been extensively studied, the impact of nutrient enrichment on soil microbial populations remains unclear. Soil microorganisms serve as important indicators in shaping cycling processes and are typically sensitive to additions. For this, we employed a factorial combination design examine additions composition function bacteria temperate steppe. Nitrogen addition promoted growth copiotrophic (Proteobacteria, Firmicutes, Bacteroidota) but inhibited oligotrophic (Acidobacteria, Chloroflexi, Verrucomicrobiota). Phosphorus alleviated phosphorus deficiency, resulting decrease abundance phoD-harboring (Actinobacteria Proteobacteria). Significant enhancement bacterial alpha diversity was observed only treatments with added phosphorus. Changes NO

Language: Английский

---

Contrasting ecological mechanisms mediate the impact of land conversion on ecosystem multifunctionality

Functional Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 3, 2025

Abstract Land use/cover (LULC) changes have unequivocally affected biodiversity and ecosystem functioning, with enormous repercussions for human well‐being. However, the mechanistic ecological mechanisms underlying impact of land conversion on multifunctionality (EMF) remain insufficiently examined from perspective multiple attributes in dryland regions increasing deforestation rates. We investigated how natural forests savannas to agroforestry parklands alters relationships between (taxonomic, functional, phylogenetic structural) EMF, while accounting effects environmental factors landscapes Benin. used forest inventory data 145 plots spanning forests, assessed implications three scenarios. quantified EMF using eight functions that are central primary productivity nutrient cycling. found was positively related solely structural diversity forests. The decreased both directly indirectly. indirect were mediated by two contrasting effects. When converted through savannas, driven shifts functional composition towards dominance species acquisitive traits. In contrast, reduction explained when parklands. aridity index soil texture influenced attributes, but not EMF. present study provides evidence biodiversity–EMF relationship is dependent LULC type evident only diversity, thereby emphasizing importance enhancing promoting Our findings also demonstrate weakened biotic homogenization resulting biodiversity‐related mechanisms, including loss resource‐use strategy. Read free Plain Language Summary this article Journal blog.

Language: Английский

---

Microbial dynamics and agroforestry impact on soil ecosystem multifunctionality following forest conversion to macadamia-based systems

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 206, P. 105869 - 105869

Published: Jan. 8, 2025

Language: Английский

---

Assembly Processes Underlying Biotic Homogenization of Soil Microbial Communities in an Urban Ecosystem

Land Degradation and Development, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

ABSTRACT Urbanization is known to cause biotic homogenization, but the processes controlling homogenization are not well understood. Here, we analyzed microbial communities from 258 soil samples covering large landscape heterogeneity of entire Shanghai megacity. We measured urbanization intensity by incorporating habitat fragmentation, connectivity, and distance city center. determined extent which bacterial fungal community composition varied with how different assembly contributed variations. found significantly positive effects on compositional bacteria fungi, proportions generalists specialists were related homogenization. Dispersal ecological drift explained at least 60% variations, increased influences dispersal reducing specialists. Environmental variables < 28% higher led a simplified co‐occurrence network an proportion in network. These results indicate that homogenized shifting generalist specialist microbes, weak environmental selection. Therefore, conserve urban biodiversity ecosystem functioning face complex human impacts, management strategies should consider only conditions also drift, as species preferences, increase effectiveness actions.

Language: Английский

---

Transboundary Impacts of NO2 on Soil Nitrogen Fixation and Their Effects on Crop Yields in China

Agriculture, Journal Year: 2025, Volume and Issue: 15(2), P. 208 - 208

Published: Jan. 18, 2025

Nitrogen dioxide (NO2) impacts climate, air quality, soil nitrogen fixation, and crop production, yet its transboundary remain unclear. This study combines 15 global datasets to assess nitrogen’s on yields health. We use machine learning develop yield prediction models for major grain crops (maize, rice, soybean, wheat) affected by NO2. Our findings indicate stable fixation in China from 2015 2020, although overgrazing deforestation may cause declines. Increasing total content 0.62–2.1 g/kg can reduce NO2 10–30%. research indicates that the current agricultural environments (58.5–94.2%) have already exceeded concentration range tolerate, particularly regions near northern urban clusters. highlights need regional interventions, such as precision fertilizer management, enhance both yields. Scenario analysis suggests control boost maize rice a greener context, while increasing improves wheat soybean provides solution advancing sustainable agriculture linking cycle management with improved environmental sustainability.

Language: Английский

---

Land use intensity differently influences soil communities across a range of arable fields and grasslands

Geoderma, Journal Year: 2025, Volume and Issue: 454, P. 117201 - 117201

Published: Feb. 1, 2025

Language: Английский

---