A5012948673- Peatlands and Wetlands Ecology
- Botany and Plant Ecology Studies
- Bryophyte Studies and Records
- Coastal wetland ecosystem dynamics
- Geology and Paleoclimatology Research
- Financial Reporting and Valuation Research
- Psychoanalysis and Psychopathology Research
- Historical and Scientific Studies
- Luminescence Properties of Advanced Materials
- Soil erosion and sediment transport
- Multimedia Communication and Technology
- Environmental and Cultural Studies in Latin America and Beyond
- Health, Medicine and Society
- Lichen and fungal ecology
- Pigment Synthesis and Properties
- Firm Innovation and Growth
- Usability and User Interface Design
- Digital Communication and Language
- Plant responses to water stress
- Glass properties and applications
Norwegian Institute for Nature Research
2024
Uppsala University
2016-2022
Peat mosses (Sphagnum) largely govern carbon sequestration in Northern Hemisphere peatlands. We investigated functional traits related to growth and decomposition Sphagnum species. tested the importance of environment phylogeny driving species trade-offs among them. selected 15 globally important species, representing four sections (subgenera) a range peatland habitats. measured rates photosynthesis standard laboratory conditions as measures innate decay potential, this realized growth,...
Abstract The relative importance of global versus local environmental factors for growth and thus carbon uptake the bryophyte genus Sphagnum— main peat‐former ecosystem engineer in northern peatlands—remains unclear. We measured length net primary production (NPP) two abundant Sphagnum species across 99 Holarctic peatlands. tested previously proposed abiotic biotic drivers peatland (climate, N deposition, water table depth vascular plant cover) on these responses. Employing structural...
Abstract Background and aims Sphagnum mosses are ecosystem engineers that create maintain boreal peatlands. With unique biochemistry , waterlogging acidifying capacities, they build up meters-thick layers of peat, reducing competition impeding decomposition. We quantify within-genus differences in biochemical composition to make inferences about decay rates, related hummock–hollow fen–bog gradients phylogeny. Methods sampled litter from 15 species, abundant over the whole northern...
The ecosystem engineers Sphagnum (peat mosses) are responsible for sequestering a large proportion of carbon in northern peatlands. Species may respond differently to hydrological changes, and water level changes lead vegetation shifts peatlands, causing them revert from sinks sources carbon. We aimed compare species-specific responses drawdown within Sphagnum, investigate which traits affect economy this genus.
Abstract The role of trait trade‐offs and environmental filtering in explaining the variability functional traits ecosystem processes has received considerable attention for vascular plants but less so bryophytes. Thus, we do not know whether same forces also shape phenotypic Here, assess how gradients subsequently peat mosses ( Sphagnum ), a globally important plant genus carbon accumulation. We used piecewise Structural Equation Modeling (SEM) to understand influence vital across levels...
Diffusion kinetics and structural properties of chemically strengthened titania-doped soda-lime silicate glasses were studied by depth-resolved X-ray photoelectron spectroscopy, Raman spectroscopy spectrophotometry. The ion exchanged, whereby Na+ in the glass was replaced K+ a molten salt bath, at four different treatment temperatures between 350 500 °C. alkali diffusion coefficient, DK-Na, corresponding activation energy calculated to be 3.26×10−12 4.47×10−11 cm2s−1 101.1 kJmol−1 105.6...
Abstract. Rain-fed peatlands are dominated by peat mosses (Sphagnum sp.), which for their growth depend on nutrients, water and CO2 uptake from the atmosphere. As isotopic composition of carbon (12,13C) oxygen (16,18O) these Sphagnum affected environmental conditions, tissue accumulated in constitutes a potential long-term archive that can be used climate reconstruction. However, there is inadequate understanding how isotope values influenced restricts current use as palaeoenvironmental...
Biological nitrogen (N) fixation is an important process supporting primary production in ecosystems, especially those where N availability limiting growth, such as peatlands and boreal forests. In many peatlands, peat mosses (genus Sphagnum) are the prime ecosystem engineers, like feather forests, they associated with a diverse community of diazotrophs (N2-fixing microorganisms) that live on their tissue. The large variation N2 rates reported literature remains, however, to be explained. To...
Factors driving the species richness and distribution of bryophytes are poorly studied not well understood, particularly in grasslands. We analysed occurrence bryophyte variation across 674 plots (0.5 m × 0.5 m) alvar vegetation (grassland on limestone pavement with thin or no soil) Öland (Sweden) relation to substrate characteristics chemistry, inundation frequency, grazing pressure geographical variables. found 148 taxa, including 11 nationally red-listed ones. Species per plot was...
Abrupt global warming poses threats to hydrological cycles and peatland ecosystem development. Northern peatlands, such as palsa mires, experience prompt degradation due disappearing ice cores caused by increasing air temperatures changes in precipitation patterns that induce the development of thicker snow covers insulating existing impair their Disappearing mires are experiencing subsidence, which turn is flattening topography changing hydration. What's more, shape position cause local...
Notre objectif est de réaliser une étude phénoménologique croisée l'état mélancolique et la crise maniaque. Pour ce faire, nous analysons le rapport qu'entretiennent ces deux états psychopathologiques avec les notions d'identité narrative, d'intentionnalité ainsi que spécificités des conduites territoriales.À partir cas cliniques en référant à différents modèles théoriques issus psychopathologie phénoménologique, discutons proximités différences qui existent entre psychopathologies sont...
Figure S1.Annual variation in modelled δ 18 O precip at the sample sites (one line per site).Table S1.List of sampled sites, their location and sampling year.
Abstract. Rain-fed peatlands are dominated by peat mosses (Sphagnum sp.), which for their growth depend on elements from the atmosphere. As isotopic composition of carbon (12,13C) and oxygen (16,18O) these Sphagnum affected environmental conditions, dead tissue accumulated in constitutes a potential long-term archive that can be used climate reconstruction. However, there is lack adequate understanding how isotope values influenced restricts current use as palaeoenvironmental indicators....