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Planting diverse forests is widely promoted as a way to counter climate change and improve ecosystem functioning. This study finds that the spatial arrangement of tree species matters: forests with higher spatial mixing of tree species yield greater biomass, faster nutrient cycling, and thus enhanced ecosystem functioning.

It is unclear whether the linkage between tree species richness and insect herbivory is consistent across climates and forest types. Here, the authors analyse data from forest biodiversity experiments to show a generally positive tree growth–insect herbivory relationship that is modulated by leaf traits.

Plant diversity and community history can jointly influence ecosystem functions, including those performed by soil fauna. This study shows that soil community history, rather than plant diversity or short-term plant adaptations, plays a crucial role in enhancing belowground ecosystem function.

Applying the concept of ecosystem energetics to a grassland biodiversity experiment, the authors show that the storage and flow of energy across the whole trophic network, both above- and belowground, becomes more efficient as plant diversity increases.

The soils of urban greenspaces are strikingly rich. This study finds that the variety of microbial life there is linked to acidic conditions and that this diversity is more homogenous than found in farmland soils.

Land management impacts ecosystem functions. Here, the authors conduct field experiments in Germany assessing ecosystem variables in cropland and grasslands showing that sustainable agricultural practices enhance ecological and economic benefits.

How tree diversity effects on ecosystem functioning vary along climatic gradients is unclear. Here, analysing data from 15 experimental forest sites, the authors show that tree growth responses to neighbourhood species diversity are stronger in wetter climates but are unaffected by interannual climatic variation within sites.

The role of interspecific interactions in biodiversity–ecosystem stability relationships is unclear. Here the authors develop a theoretical approach and show that empirical diversity–stability relationships in grasslands are best explained by species-specific dynamics rather than by interspecific interactions.

Plant-diversity effects on particulate and mineral-associated organic matter in soil remain underexplored. The authors propose that elucidating the mechanisms underlying these effects can help explain inconsistencies in plant-diversity–soil-carbon relationships across studies and better predict consequences of biodiversity loss/gain for soil carbon stocks.

A common but untested expectation is that nutrient enrichment causes biotic homogenization. However, a globally standardized nutrient addition experiment in grasslands shows proportionally similar species loss across scales and no biotic homogenization after up to 14 years of treatment.

Accurate estimates of the biodiversity of soil animals are essential for conservation efforts and to understand the animals’ role in carbon cycles. Such information is now available on a global scale for nematode worms.

The mechanisms driving soil carbon storage, one of the largest stores of terrestrial carbon, remain poorly understood. Here, the authors present data from the long-term Jena Experiment on grassland biodiversity, showing that elevated carbon storage at high plant diversity is a direct function of increased soil microbial activity.

By combining modelling and simulated data with empirical data from 76 grassland sites across 6 continents, the authors show that the relative abundance of dominant species predicts species richness, while their absolute abundance predicts community biomass.

Increasing the number of global changes reduces the resistance of ecosystem services worldwide, according to an analysis of global available observational data and field experiments.

A meta-analysis of more than 1,000 studies reveals the global ecosystem functions provided by termites, ants and earthworms as they improve soil quality by making biogenic structures such as termite mounds, ant hills and earthworm casts.

Enough of silos: develop a joint scientific agenda to understand the intertwined global crises of the Earth system.

Wildfires are intensifying as a result of rapid climate change. By integrating experimental observations with random forest model, the authors discovered that fires decouple soil biogeochemistry worldwide, providing critical insights for ecosystem management.

Research on biodiversity–ecosystem functioning relationships tends to focus on single trophic groups. This analysis of two biodiversity experiments, representing forests and grasslands, shows that plant diversity promotes ecosystem multifunctionality not only directly, but also by enhancing the diversity of other trophic levels.

Protection afforded by inorganic minerals is assumed to make mineral-associated organic carbon less susceptible to loss under climate change than particulate organic carbon. However, a global study of soil organic carbon from drylands suggests that this is not the case.

Geographic patterns in plant growth are probably influenced by soil abiotic and biotic conditions. Here, the authors assess the relationship of a composite soil health index to primary productivity and the underlying environmental predictors across major land-use types in Europe.

A survey of plant and animal sightings, feeding interactions and carbon cycling across 4.8 million hectares provides evidence for the role of multitrophic biodiversity and interactions in large-scale biogeochemical dynamics in the Amazon.

Soils from 30 grasslands across Europe were subjected to 4 contrasting extreme climatic events under drought, flood, freezing and heat conditions, with the results suggesting that soil microbiomes from different climates share unified responses to extreme climatic events.

In global drylands, soils tend to be more fertile beneath tree, shrub and grass islands. Soil fertility was greater beneath taller and wider plants but was unaffected by either grazing pressure or the type of herbivore.

Springtails are omnipresent soil arthropods, vital for ecosystems. In the first global assessment of springtails, this study shows a 20-fold biomass difference between the tundra and the tropics, with distinct temperature-related patterns for diversity and metabolism that suggest climate change may restructure the functioning of soil biodiversity.

Biodiversity underpins the function of ecosystems. Here we discuss how biodiversity–ecosystem function theory could apply to our bodies and buildings, outline practical applications and call for further research.

The authors show shifts in predatory spider web mesh size under experimental warming in an alpine meadow. Web mesh size decreased for a large spider species, but increased for a small species, with changes linked to altered prey size spectra following soil moisture and plant community shifts.

Species-rich plant communities often have higher productivity than monocultures. Here, the authors analyse biodiversity-ecosystem functioning experiments in grasslands and forests and find that the biodiversity effects on community productivity strengthen over time thanks to shifts in contributions of species with different resource acquisition traits.

Remotely sensed NDVI data and contemporary field data from 84 grasslands on 6 continents show increasing divergence in aboveground plant biomass between sites in different bioclimatic regions.

Long-term grassland and forest experiments reveal that temporal strengthening in biodiversity functioning relationships is mainly driven by increases in functioning in high-diversity communities.

The effects of biodiversity on ecosystem function are usually studied within trophic levels. These authors conduct a large experiment across trophic levels to show how manipulations of plant diversity affect function in different groups. The effects are consistent across groups, but are stronger at adjacent trophic levels and in above-ground rather than below-ground groups.

The authors use experimental data from 332 sites across all major global biomes to evaluate the drivers of soil microbial respiration response to warming. They demonstrate a key role of the soil microbiome, highlighting the need to account for this in assessments of soil respiration under change.

Soil carbon content is positively related with plant diversity in global grasslands, and this relationship is particularly strong in warm and arid climates. Plant diversity is related to soil carbon via the quality of organic matter.

Anthropogenic eutrophication is a driver of plant community shifts in many grassland ecosystems. Here, the authors use data from a globally distributed experiment to assess how nutrient addition affects multiple facets of grassland ecological stability and their correlations.

This Perspective provides guidance about how to select the most appropriate type of interaction network for different research questions in ecology. Networks can vary according to the extent of node aggregation and the information that links represent; each kind of network formulation has advantages in different contexts.

Trees often associate with mycorrhizal fungi, arbuscular mycorrhizal (AM) or ectomycorrhizal (ECM) fungi. Luo et al. analyze 74,563 forest plots across the contiguous USA, showing that forests with mixed AM and ECM tree species are more productive than when dominated by AM or ECM tree species.

The insurance hypothesis posits that more diverse communities are more stable through time. Here, the authors show that plant biodiversity reduces the spatial variability of productivity in grassland communities, demonstrating that the insurance hypothesis applies also across space.

Phenological shifts driven by climate change are well-studied in plants and aboveground animals, but scarcely in belowground biota. Here, the authors show that soil warming causes phenological mismatches between plants, soil microbes and soil microarthropods in an alpine meadow.

Biodiversity-ecosystem functioning relationships may change over time. Here, Wagg et al. show that richness-productivity and richness stability relationships grow stronger over time in an experimental grassland community, and shed light on the ecological mechanisms.

Using experimental communities of grassland species, this study shows that drought-exposure history can accelerate recovery from subsequent drought through increased niche complementarity between species. This transgenerational effect may enhance the sustainability of biodiversity and ecosystem functioning in a future with more frequent droughts.

Soil microbial carbon is central to soil functions and services, but its spatial-temporal dynamics are unclear. Here the authors show global trends in soil microbial carbon, which suggests a global decrease in soil microbial carbon, mostly driven by temperature increases in northern areas.

Plant diversity stabilizes grassland soil temperature by boosting soil organic carbon and increasing plant leaf area, according to an 18-year plant diversity experiment.

Eutrophication has been shown to weaken diversity-stability relationships in grasslands, but it is unclear whether the effect depends on scale. Analysing a globally distributed network of grassland sites, the authors show a positive role of beta diversity and spatial asynchrony as drivers of stability but find that nitrogen enrichment weakens the diversity-stability relationships at different spatial scales.