| 1. |
- Tedersoo, L., et al.
(författare)
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The Global Soil Mycobiome consortium dataset for boosting fungal diversity research
- 2021
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Ingår i: Fungal Diversity. - : Springer Science and Business Media LLC. - 1560-2745 .- 1878-9129. ; 111, s. 573-588
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Tidskriftsartikel (refereegranskat)abstract
- Fungi are highly important biotic components of terrestrial ecosystems, but we still have a very limited understanding about their diversity and distribution. This data article releases a global soil fungal dataset of the Global Soil Mycobiome consortium (GSMc) to boost further research in fungal diversity, biogeography and macroecology. The dataset comprises 722,682 fungal operational taxonomic units (OTUs) derived from PacBio sequencing of full-length ITS and 18S-V9 variable regions from 3200 plots in 108 countries on all continents. The plots are supplied with geographical and edaphic metadata. The OTUs are taxonomically and functionally assigned to guilds and other functional groups. The entire dataset has been corrected by excluding chimeras, index-switch artefacts and potential contamination. The dataset is more inclusive in terms of geographical breadth and phylogenetic diversity of fungi than previously published data. The GSMc dataset is available over the PlutoF repository.
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| 2. |
- Tedersoo, Leho, et al.
(författare)
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Global patterns in endemicity and vulnerability of soil fungi.
- 2022
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Ingår i: Global change biology. - : Wiley. - 1365-2486 .- 1354-1013. ; 28:22, s. 6696-6710
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Tidskriftsartikel (refereegranskat)abstract
- Fungi are highly diverse organisms, which provide multiple ecosystem services. However, compared with charismatic animals and plants, the distribution patterns and conservation needs of fungi have been little explored. Here, we examined endemicity patterns, global change vulnerability and conservation priority areas for functional groups of soil fungi based on six global surveys using a high-resolution, long-read metabarcoding approach. We found that the endemicity of all fungi and most functional groups peaks in tropical habitats, including Amazonia, Yucatan, West-Central Africa, Sri Lanka, and New Caledonia, with a negligible island effect compared with plants and animals. We also found that fungi are predominantly vulnerable to drought, heat and land-cover change, particularly in dry tropical regions with high human population density. Fungal conservation areas of highest priority include herbaceous wetlands, tropical forests, and woodlands. We stress that more attention should be focused on the conservation of fungi, especially root symbiotic arbuscular mycorrhizal and ectomycorrhizal fungi in tropical regions as well as unicellular early-diverging groups and macrofungi in general. Given the low overlap between the endemicity of fungi and macroorganisms, but high conservation needs in both groups, detailed analyses on distribution and conservation requirements are warranted for other microorganisms and soil organisms.
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| 3. |
- Hagen-Thorn, Anna, et al.
(författare)
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Autumn nutrient resorption and losses in four deciduous forest tree species
- 2006
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Ingår i: Forest Ecology and Management. - : Elsevier BV. - 1872-7042 .- 0378-1127. ; 228:1-3, s. 33-39
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Tidskriftsartikel (refereegranskat)abstract
- Nutrient resorption prior to leaf senescence is an important mechanism of nutrient conservation in forest tree species. However, despite the abundance of literature on the subject, inter-specific comparison of common temperate tree species is complicated by both the variability of resorption efficiency, which is affected by many environmental factors, and methodological differences between the studies, especially in relation to measurements of nutrient losses. This study compares the autumn nutrient resorption and nutrient losses via throughfall and litterfall of N, P, K, S, Mg, Ca, Cu, Fe and Mn in adjacent 40-year-old stands of Quercus robur L., Tilia cordata Mill., Fraxinus excelsior L. and Betula pendula Roth. In addition, the relative susceptibility of leaves to leaching was studied in the laboratory. For all species and elements, except K in ash stands, nutrient losses via throughfall were considerably lower than the losses via litterfall during the sampling period (from the end of August to the middle of October). Nutrient amounts in the throughfall were mostly governed by the susceptibility of the respective species to foliar leaching, which was highest in ash trees, but also depended on nutrient amounts in the pre-senescent leaves. K showed the highest losses via throughfall among the studied elements, 30% of the green leaf content being lost in the ash stand and 8-11% in the other stands. Ash also showed considerable throughfall losses (9-19% of green leaf content) of S, Mn, Mg, Ca and P, while the corresponding losses of these elements in other species were lower in relation to the nutrient content of their foliage. Species with higher amounts of nutrients in the green leaves tended to have higher amounts of nutrients in their litter, but this tendency was not observed for all species and elements. Nutrient resorption efficiency, calculated on leaf area basis, differed among species and was highest for N (ranging from 36% in ash to 69% in birch), P (from 37 in ash to 59% in lime), K (from 38% in ash to 51% in lime) and S (from 31% in ash to 48% in birch). Fe and Cu were the most efficiently withdrawn micronutrients (the amounts resorbed ranging from 7-10% in lime to 20-37% in the other species). (c) 2006 Elsevier B.V. All rights reserved.
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| 4. |
- Hagen-Thorn, Anna, et al.
(författare)
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The impact of six European tree species on the chemistry of mineral topsoil in forest plantations on former agricultural land
- 2004
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Ingår i: Forest Ecology and Management. - : Elsevier BV. - 1872-7042 .- 0378-1127. ; 195:3, s. 373-384
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Tidskriftsartikel (refereegranskat)abstract
- Influences on mineral topsoils of common European tree species (oak-Quercus robur L., lime-Tilia cordata Mill., ash-Fraxinus excelsior L., birch-Betula pendula Roth., beech-Fagus sylvatica L. and spruce-Picea abies (L.) Karst.) were studied in 30 to 40-year-old stands planted in adjacent plots on former arable land. Mineral soil samples from two depth layers (0-10 and 20-30 cm) under the different species were compared in terms of pH, base saturation, pools and concentrations of exchangeable macro- and micronutrients, total nitrogen and carbon. With the exception of pH (H2O) and extractable Al and Fe, no significant differences between species were detected in the lower layer. The upper (0-10 cm) layer was, however, affected differently depending on tree species: significant differences in pH, base saturation, exchangeable base cations and other nutrients were observed. The most prominent differences were between lime and spruce. Lime had considerably higher pH, base saturation, base cation and boron pools compared to spruce, which had the most acidifying effect on the mineral topsoils. Among the deciduous species, beech had the most similar effect to spruce on the upper layer of mineral topsoils. Soil C, N and C/N ratios did not differ significantly among species.
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| 5. |
- Mikryukov, Vladimir, et al.
(författare)
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Connecting the multiple dimensions of global soil fungal diversity
- 2023
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Ingår i: Science advances. - 2375-2548. ; 9:48
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Tidskriftsartikel (refereegranskat)abstract
- How the multiple facets of soil fungal diversity vary worldwide remains virtually unknown, hindering the management of this essential species-rich group. By sequencing high-resolution DNA markers in over 4000 topsoil samples from natural and human-altered ecosystems across all continents, we illustrate the distributions and drivers of different levels of taxonomic and phylogenetic diversity of fungi and their ecological groups. We show the impact of precipitation and temperature interactions on local fungal species richness (alpha diversity) across different climates. Our findings reveal how temperature drives fungal compositional turnover (beta diversity) and phylogenetic diversity, linking them with regional species richness (gamma diversity). We integrate fungi into the principles of global biodiversity distribution and present detailed maps for biodiversity conservation and modeling of global ecological processes.
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