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Five years of national airborne pollen monitoring in South Africa: biome-specific calendars to inform allergy diagnosis and preventionNARA Subscribed
Pollen monitoring is crucial for understanding seasonal patterns, supporting allergy diagnosis and informing early warning tools to mitigate allergic diseases. The Southern Hemisphere lacks long-term pollen seasonal data, with extremely few records from Africa. We present pollen calendars based on five years of data from South Africa. Airborne pollen from 2019 to 2024 across South African biomes was collected in seven cities u...
Temperate Forest Floors: Ecosystem Hubs in Transition?NARA Subscribed
The forest floor (FF) plays a key role in carbon, nutrient, and water cycling. It is the biologically most active compartment of forest soils, highly responsive to environmental conditions. Yet, its response to current changes in environmental conditions and forest management is understudied. Temperate forests are among the best studied ecosystems globally, providing the necessary ecological and biogeochemical background infor...
Bundesweite Entwicklung der Grundwasserstände seit 1991: Langzeittrends, Variabilität und Auswirkungen der jüngsten TrockenphaseNARA Subscribed
Zusammenfassung Die Studie untersucht die Entwicklung der Grundwasserstände in Deutschland anhand von 5844 Messstellen sowie deren Reaktionsdynamik gegenüber klimatologischen Antrieben im Referenzzeitraum 1991–2020. Zusätzlich wird die Entwicklung seit 2018 im Kontext der außergewöhnlichen Dürreperiode betrachtet, um die Reaktionsfähigkeit und Vulnerabilität der Grundwassersysteme gegenüber extremen klimatischen Bedingungen zu...
Protein phosphatase 2A (PP2A) accounts for approximately half of all serine/threonine phosphatase activity in the mammalian heart. We hypothesised that PP2A, through dephosphorylation of key regulatory enzymes, modulates cardiac glucose uptake and metabolism in vivo. Using positron emission tomography (PET), we studied the uptake of 2-[ 18 F]fluoro-2-deoxy-D-glucose ([ 18 F]FDG) in living mice with cardiac-specific overexpress...
Predicting Air Flow in Calendered Paper Sheets from μ-CT Data: Combining Physics with MorphologyNARA Subscribed
Predicting the macroscopic properties of thin fiber-based porous materials from their microscopic morphology remains challenging because of the structural heterogeneity of these materials. In this study, computational fluid dynamics simulations were performed to compute volume air flow based on tomographic image data of uncompressed and compressed paper sheets. To reduce computational demands, a pore network model was employed...
Viral transfer from managed pollinators potentially threatens wild pollinators and may be exacerbated by land‐use changes. Our causal models and plant‐pollinator network data from 48 European urban and agricultural landscapes revealed the ecological mechanisms underpinning viral transmission. Host identity, network architecture and land‐use modulated viral dynamics (black queen cell virus, BQCV; deformed wing virus, DWV‐A and...
Temperature alters the inotropic and chronotropic effect of D1-dopamine receptor stimulation in the mammalian atriumNARA Subscribed
We studied how hypothermia and hyperthermia may change the efficacy and/or potency of dopamine to augment the force of contraction in atria of mice with cardiac overexpression of the human D 1 -dopamine receptor (D 1 -TG). We measured the force of contraction on paced (1 Hz) left atria and spontaneously beating right atria of these D 1 -TG mice in vitro. The intrinsic heart beat in the right atria from D 1 -TG mice lowered whe...
On the origin of the late-flowering ppd-H1 allele in barleyNARA Subscribed
To breed for climate resilient crops, an understanding of the genetic and environmental factors influencing adaptation is critical. Barley provides a model species to study adaptation to climate change. Here we present a detailed analysis of genetic variation at a major photoperiod response locus and relate this to the domestication history and dispersal of barley. The PPD-H1 locus (a PSEUDO-RESPONSE REGULATOR 7 ) promotes flo...
Can Solar‐Powered Irrigation Systems Naturally Meet Crop Water Requirements? Proof of Concept From a Case Study in Sub‐Saharan AfricaNARA Subscribed
Irrigation scheduling is crucial for ensuring precise water delivery to crops. However, in many sub‐Saharan African irrigation schemes, water is applied without considering crop water needs, resulting in low crop water productivity and low yields. Solar‐powered irrigation systems can automatically meet these needs by utilizing solar radiation, which drives both evapotranspiration and solar panel power production for pumping. T...
Avenues towards reconciling wild and managed bee proponentsNARA Subscribed
The Toxicology Investigators Consortium 2023 Annual ReportNARA Subscribed
Colony environment and absence of brood enhance tolerance to a neonicotinoid in winter honey bee workers, Apis melliferaNARA Subscribed
In eusocial insects, worker longevity is essential to ensure colony survival in brood-free periods. Trade-offs between longevity and other traits may render long-living workers in brood-free periods more susceptible to pesticides compared to short-lived ones. Further, colony environment (e.g., adequate nutrition) may enable workers to better cope with pesticides, yet data comparing long vs. short-living workers and the role of...
OR-1896 ((R)-N-(4-(4-methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)phenyl)acetamide) is the main active metabolite of levosimendan. However, nobody has reported a positive inotropic effect of OR-1896 in isolated human cardiac preparations. The mechanism of action of OR-1896 remains controversial. Hence, we wanted to know whether OR-1896 exerts a positive inotropic effect in humans and what might be the underlying mechanism. Th...