1. Disentangling drivers behind fungal diversity gradients along altitude and latitudeFlorian Barbi, Tijana Martinović, Inaki Odriozola, Antonin Machac, Andrea Moravcová, Camelia Algora, Dalibor Ballian, Sebastian Barthold, Vendula Brabcová, Sandra Awokunle Hollá, Zander Rainier Human, Hojka Kraigher, Jelena Lazarević, Clémentine Lepinay, Lenka Mészárosová, Daniel Morais, 2026, izvirni znanstveni članek Povzetek: Gradients in species diversity across elevations and latitudes have fascinated biologists for decades. While these gradients have been well documented for macroorganisms, there is limited consensus about their universality, shape and drivers for microorganisms, such as fungi, despite the importance of fungal diversity for ecosystem functions and services. We conducted a comprehensive survey of fungal species richness in forests across 17 elevational transects along a latitudinal gradient covering the continental scale of Europe. Diversity patterns along elevational and latitudinal gradients differed among fungal ecological guilds. Diversity of saprotrophs declined with elevation while ectomycorrhizal (ECM) fungal diversity peaked in mid-elevations. Moreover, the diversity of root endophytic fungi increased with latitude but did not change with elevation. Bayesian species distribution modeling suggests that fungal diversity is structured by deterministic rather than stochastic drivers. Importantly, ECM fungal diversity pattern persists even after accounting for the effects of environmental conditions. These results suggest that environmental conditions differentially shape the diversity of fungal guilds along elevational and latitudinal gradients, but this goes beyond soil and climatic factors in the case of ECM fungi. This study paves the way toward a better understanding of fungal diversity gradients across elevations and latitudes, with possible implications for macroecological theory, conservation and management.
Ključne besede: fungal diversity, altitudinal, latitudinal, biogeography, climate
Objavljeno v DiRROS: 19.02.2026; Ogledov: 469; Prenosov: 265
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2. Phosphorus limitation promotes soil carbon storage in a boreal forest exposed to long-term nitrogen fertilizationEtienne Richy, Tania Fort, Inaki Odriozola, Petr Kohout, Florian Barbi, Tijana Martinović, Boris Tupek, Bartosz Adamczyk, Aleksi Lehtonen, Raisa Mäkipää, Petr Baldrian, 2024, izvirni znanstveni članek Povzetek: Forests play a crucial role in global carbon cycling by absorbing and storing significant amounts of atmospheric carbon dioxide. Although boreal forests contribute to approximately 45% of the total forest carbon sink, tree growth and soil carbon sequestration are constrained by nutrient availability. Here, we examine if long-term nutrient input enhances tree productivity and whether this leads to carbon storage or whether stimulated microbial decomposition of organic matter limits soil carbon accumulation. Over six decades, nitrogen, phosphorus, and calcium were supplied to a Pinus sylvestris-dominated boreal forest. We found that nitrogen fertilization alone or together with calcium and/or phosphorus increased tree biomass production by 50% and soil carbon sequestration by 65% compared to unfertilized plots. However, the nonlinear relationship observed between tree productivity and soil carbon stock across treatments suggests microbial regulation. When phosphorus was co-applied with nitrogen, it acidified the soil, increased fungal biomass, altered microbial community composition, and enhanced biopolymer degradation capabilities. While no evidence of competition between ectomycorrhizal and saprotrophic fungi has been observed, key functional groups with the potential to reduce carbon stocks were identified. In contrast, when nitrogen was added without phosphorus, it increased soil carbon sequestration because microbial activity was likely limited by phosphorus availability. In conclusion, the addition of nitrogen to boreal forests may contribute to global warming mitigation, but this effect is context dependent.
Ključne besede: carbon storage, microbial communities, boreal forest, fertilization
Objavljeno v DiRROS: 23.12.2024; Ogledov: 1012; Prenosov: 639
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