1,721,086 research outputs found
Replication Data for: Functional diversity of dead wood promotes species rich communities of fungi
No full textData on fungal community composition and dead wood diversity and volume in 24 forests in South-Eastern Norway.This study evaluates how different facets of functional diversity of dead wood (richness, evenness, divergence, and dispersion) combined with volume affect communities of fruiting polyporoid and corticioid fungi in Agaricomycetes. Using an existing study system, where dead wood has been surveyed in paired clear-cut and near-natural forests, we test the impact of functional diversity on fungal communities. Our findings reveal that near-natural forests exhibit higher fungal species richness due to greater volume and diversity of dead wood. We demonstrate that a unified measure of dead wood volume and functional diversity better predicts fungal species richness and community composition than either factor alone. Functional divergence and evenness of dead wood are key predictors, with high functional divergence indicating a variety of niches and high functional evenness suggesting well-distributed niche availability. These results highlight the importance of both the quantity and structural heterogeneity of dead wood in maintaining fungal diversity. Conservation efforts and forest management should focus on enhancing both the volume and structural diversity of dead wood to support diverse fungal communities. This study provides valuable insights into species assembly processes and underscores the need for integrated measures of dead wood characteristics in ecological studies
Replication Data for: "Contrasting responses of plant and lichen carbon based secondary compounds across an elevational gradient"
No full textThis dataset contains concentrations of phenolic compounds in individual species of lichens and vascular plants sampled across an elevational gradient from 1120 to 1600 m above sea level near Finse in southern Norway
Replication Data for: Trait-based response of lichens to large-scale patterns of climate and forest availability in Norway
No full textThis dataset contains gridded data on relative trait frequences of lichens, temperature, precipitation and percent forest cover in Norwa
Replication Data for: Mat-forming lichens support contrasting micro-arthropod density
No full textMat-forming lichens are important components of tundra and alpine vegetation, and affect soil microclimatic conditions, which in turn may influence micro-arthropod communities. Here, we compare the density of Collembola and Oribatida within lichen mats and their abundance in the underlying soil across four different mat-forming lichens at Finse, southern Norway. The lichen mats consisted of Alectoria ochroleuca, Cetraria islandica, Cladonia rangiferina/stygia, or Flavocetraria nivalis. We also measured soil element availability beneath the lichen mats
Replication Data for: Long term effects of forest management on forest structure and dead wood in mature boreal forests
No full textThis dataset contains data on forest structure, volumes of coarse woody debris and microclimate at 24 Picea abies-forests in southeastern Norway. The 24 sites are in 12 pairs where one of sites are a mature previously clear-cut forest and the other is a forest that never have been clear-cut. We investigated long-term effects of clear-cutting on forest structure and dead wood volumes
Replication data for: Contrasting drivers of community-level trait variation for vascular plants, lichens, and bryophytes across an elevational gradient
No full textThis dataset presents data for "Contrasting drivers of community-level trait variation for vascular plants, lichens, and bryophytes across an elevational gradient, Roos & van Zuijlen et al. 2019, Functional Ecology". The set contains data on vascular plant, lichen, and bryophyte cover and functional traits across an elevational gradient in Finse, southern Norwa
Replication Data for: Spatial variation in amount of carbon in boreal forest surface soil – the role of historical fires, hydro-topography, and contemporary vegetation
No full textThis dataset contains data on soil C and N stocks (from soil samples), charcoal weight, historical fire frequencies, year of last fire, bottom layer vegetation cover, topography, and woody cover from Trillemarka Nature reserve
Replication Data for: Condensed tannins mediate the effect of long-term nitrogen addition on soil nematodes in a boreal spruce forest
No full textThis dataset contains data on soil condensed tannin concentrations, soil nematode communities and other soil variables, as well as condensed tannin concentrations of vaccinium myrtillus and picea abies leaves. The data were collected in 10 fertilized and 10 control plots in a long-term fertilization study site.Abstract
Fertilization and combustion of fossil fuels have increased nitrogen (N) deposition over the last decades. Most boreal forests are N-limited; thus, increased N availability may have considerable implications for boreal forest food web structure and functioning. Soil biota are important drivers of ecosystem processes through their effect on carbon (C) and nutrient cycling. Among these, nematodes are ubiquitous in soil and respond quickly to environmental changes. They are thus useful in determining changes in ecosystem status. Boreal forest plants produce large quantities of condensed tannins (hereafter tannins), and these may decrease following N addition. As defence compounds, tannins may alter soil community structure by reducing microbial activity and deter microfauna. Using nematodes as indicators, we here investigated the linkages between N-induced changes in soil food web and soil tannin concentration. We utilized an experimental site where N has been added since 2003 at a rate of ca. 150 kg N ha−1 year−1. This have resulted in a shift in the understory, and consequently a 23 % lower soil tannin concentration. Fertilization led to a less structured nematode community dominated by bacterivores. Channel Index was 35 % lower in fertilized plots, indicating an increasing decomposition dominance by bacteria. Furthermore, the dominance of bacteria appears to have been inhibited by soil tannin concentrations in the fertilized plots. Overall, our study demonstrate that soil community structure strongly changes upon increased N availability, and lower soil tannin concentrations further facilitate the dominance of bacteria
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