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Plant species effects on microbial communities are attributed to changes in microbial community composition and biomass, and may depend on plant species specific differences in the quality of resources (carbon) inputs. We examined the idea that plant-soil feedbacks can be explained by a chance effect, which is the probability of a highly productive or keystone plant species is present in the commu
The majority of nitrogen in forest soils is found in organic matter-protein complexes. Ectomycorrhizal fungi (EMF) are thought to have a key role in decomposing and mobilizing nitrogen from such complexes. However, little is known about the mechanisms governing these processes, how they are regulated by the carbon in the host plant and the availability of more easily available forms of nitrogen so
The amounts of carbon allocated to the fungal partner in ectomycorrhizal associations can vary substantially depending on the plant growth and the soil nutrient conditions, and the fungus may frequently be confronted with limitations in carbon. We used chemical analysis and transcriptome profiling to examine the physiological response of the ectomycorrhizal fungus Paxillus involutus to carbon star
Soil salinization is a growing threat to global agriculture and carbon (C) sequestration, but to date it remains unclear how microbial processes will respond. We studied the acute response to salt exposure of a range of anabolic and catabolic microbial processes, including bacterial (leucine incorporation) and fungal (acetate incorporation into ergosterol) growth rates, respiration and gross N min
Uncontrollable events such as adverse weather and volatile prices present considerable risks for arable farmers. Soil natural capital, which views the capacity of soil biodiversity to generate ecosystem services as a component of farm capital, could be important for the stability and resilience of arable production systems. We investigate therefore whether managing soil natural capital could be an
Popular Abstract in Swedish Den psykiatriska vården har genomgått radikala förändringar under de två senaste decennierna. Antalet platser inom den slutna vården har mer än halverats. Målsättningen från politikerna både på det nationella och internationella planet har varit att stänga mentalsjukhusen och erbjuda öppnare och humanare vårdformer samt öka utbudet av boendeformer för personer som drabbThis study investigated psychosocial environment, needs, quality of life and social network for persons with severe mental illness in supported housing in the community. Eighty-three persons with severe mental illness living in three different types of housing setting accepted to participate in the interviews, which took place between December 1997 and April 2000. These settings were: inpatient se
Interactions between metals and natural organic matter (NOM) are of great environmental importance and one of the key factors influencing hydrolysis, solubility, and speciation of the metals. However, studying geochemically relevant metals like Al, Fe, and Cu is sometimes associated with analytical problems; for example Fe and Cu are both redox active. Gallium (Ga) is a non-redox active metal that
Proteins are a substantial nitrogen source in soils provided that they can be hydrolyzed into bioavailable small peptides or amino acids. However, the strong associations between proteins and soil minerals restrict such proteolytic reactions. This study focused on how an extracellular fungal protease (Rhizopus sp.) hydrolyzed iron oxide-associated bovine serum albumin (BSA) and the factors that af
Soils are continuously exposed to cycles of drying and rewetting (D/RW), which drive pronounced fluctuations in soil carbon (C) fluxes. These C dynamics are characterized by a decoupled behavior between microbial biomass synthesis (growth) and CO2 production (respiration). In general, respiration rates peak shortly after RW and subsequently decrease, while the growth peaks lag several hours behind
Klimatet står inför en stor förändring i framtiden. Växthusgaser från transport och industrier ökar i atmosfären vilket i sin tur leder till en ökad temperatur. Den ökande temperaturen samt den förändrade nederbörden ger negativa konsekvenser för naturen. Det vi ser idag är de allt mer frekventa naturkatastroferna; storm, översvämningar och torka som drabbar vår planet. Naturen kan ta skada av detThe climate of the world is changing. The levels of carbon dioxide in the atmosphere are rising because of human activities. Carbon dioxide is a greenhouse gas that makes the temperature rise. Besides the temperature and carbon dioxide rise, also the amount of precipitation is changing in the world. These big changes mostly affect the nature negatively and possible also the forest. A long term stu
Soil warming (0–5.5 °C above controls) effects on ectomycorrhizal growth, carbon sequestration and community composition were examined in a Picea sitchensis forest spanning a geothermal gradient in Iceland. Fungal communities were assayed with sand-filled ingrowth meshbags incubated in the soil for 5 months. Meshbags amended with compost made from maize leaves (a C4 plant enriched in 13C) were inc
Salinization is recognized as a threat to soil fertility worldwide. A challenge in understanding the effects of salinity on soil microbial communities is the fact that it can be difficult to disentangle the effects of salinity from those of other variables that may co-vary with salinity. Here we use a trait-based approach to identify direct effects of salinity on soil bacterial communities across
Incorporating both ecosystem services and disservices into land-use decisions is essential for meeting conservation and livelihood goals. We discuss the merits and challenges of this concept, termed net effects, for birds in agroecosystems. Although birds have widely documented impacts on agriculture (e.g., pest control, crop damage), the net effects of such activities are rarely quantified. This
The Amazon is rapidly approaching an ecological tipping point driven by deforestation, forest degradation and global climate change. These are visible issues that receive increasing political and public attention.However, the accelerating biocultural loss in the Amazon, including the extinction of Indigenous languages, the disruption of Indigenous and local knowledge systems, and the disintegratio
AbstractThe need to minimise wear of hardmetal cutting tool materials requires an understanding of, and in turn accurate measurement of, both the external changes in dimensions and the internal microstructural changes which cause plastic deformation underneath the tool coating.This paper summarises development of methods to quantify the dimensional changes of the complex 3D tip shape of a tool and
Ectomycorrhizal fungi (EMF) are important components of soil microbial communities, and EMF biomass can potentially increase carbon (C) stocks by accumulating in the soils as necromass and producing recalcitrant structures. EMF growth depends on the C allocated belowground by the host trees, and the nutrient limitation on tree growth is expected to influence this allocation. Therefore, studying EM
This master’s thesis aims to investigate how pilotage contributes to maritime safety and if its criteria can be more risk-based in Sweden. The theory of Resilience Engineering was applied to maritime safety which has extended the concept further. Several aspects of how pilots contribute to maritime safety were identified within the literature and empirical studies. These aspects were the pilots
Centre for Economic Demography Lund University School of Economics and Management P.O. Box 7083 SE-220 07 Lund, Sweden www.ed.lu/publications/Lund-Papers-in-Economic-Demography/ Social Mobility and Fertility: Applying Diagonal Reference Models in Historical Studies, Sweden 1905-2015 GABRIEL BREA-MARTINEZ, MARTIN DRIBE LUND PAPERS IN ECONOMIC DEMOGRAPHY 2023:1 Social Mobility and Fertility: Applyin
https://www.lusem.lu.se/sites/lusem.lu.se/files/2024-01/LPED%202023%201.pdf - 2026-06-29
Introduction: Alcohol use has significant health implications, yet the association between alcohol use and respiratory symptoms remains relatively understudied. This study examines the prevalence of hazardous alcohol use and its associations with breathlessness, chronic cough, and health-related quality of life (HRQoL) and whether these associations with chronic airway limitation (CAL) differ by a
