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Global change is altering trade‐offs between light and nutrient availability in northern lakes, with implications for biogeochemical cycling and ecosystem functioning. Using 29 years (1991–2019) of long‐term monitoring from 169 Fennoscandian natural lakes, we quantified spatiotemporal change in browning (total organic carbon, TOC), dissolved inorganic nitrogen (DIN), total phosphorus (TP), and stoichiometry (TOC:TP and DIN:TP)...
Subsurface Irrigation in Regional Water Management: a System Dynamics Approach to Support Decision MakingNARA Subscribed
Controlled drainage with subirrigation (CDSI) using surface water contributes to freshwater availability by recharging, retaining and discharging water. However, CDSI systems affect regional hydrological fluxes, which requires adequate regional planning and management. This study aims to (i) investigate to what extent regional upscaling of CDSI can be supported in relation to surface water availability, using a system dynamics...
Effects of methamphetamine on human effort task performance are unrelated to its subjective effectsNARA Subscribed
Rationale Stimulant drugs increase objective indices of reward-related behavior, including willingness to expend effort for reward, and also produce feelings of well-being and positive mood. However, it is not known to what extent these different measures are related to each other. Objectives The present study was designed to assess the relationship between the behavioral measure of effort expenditure and positive subjective r...
Diamonds delivered to the West Coast of southern Africa from erosion of the Kaapvaal-based kimberlites and lamproitesNARA Subscribed
In the early 1900s diamonds were discovered along the Atlantic coast of southern Africa in Cainozoic alluvial deposits. Most of these were derived from erosion of Mesozoic primary sources on the Kaapvaal Craton. Previous attempts to quantify the amount of diamonds that were eroded from inland lamproites variety Kaapvaal (lamproites vK), and kimberlites varied between 10,000 and 3,000 Mct (million carats). Based on new geomorph...
The idea of Africa Alive Corridors (AAC) evolved from Gondwana geological mapping to a comprehensive, more inclusive and dynamic approach to transdisciplinary research known as Earth Stewardship Science. Twenty designated corridors explore the geo-biological and cultural heritage of different regions of Africa over various periods, from deep time to the Anthropocene. Each corridor reveals a specific lens through which to inves...
Declining calcium concentration drives shifts toward smaller and less nutritious zooplankton in northern lakesNARA Subscribed
Zooplankton community composition of northern lakes is changing due to the interactive effects of climate change and recovery from acidification, yet limited data are available to assess these changes combined. Here, we built a database using archives of temperature, water chemistry and zooplankton data from 60 Scandinavian lakes that represent broad spatial and temporal gradients in key parameters: temperature, calcium (Ca),...
The literature on repetition priming in Alzheimer’s disease (AD) is inconsistent, with some findings supporting spared priming while others do not. Several factors may explain these inconsistencies, including AD severity (e.g., dementia vs. Mild Cognitive Impairment; MCI) and priming paradigm-related characteristics. This systematic review and meta-analysis provides a quantitative summary of repetition priming in AD. We examin...
Prolonging survival in good health is a fundamental societal goal. However, the leading determinants of disability-free survival in healthy older people have not been well established. Data from ASPREE, a bi-national placebo-controlled trial of aspirin with 4.7 years median follow-up, was analysed. At enrolment, participants were healthy and without prior cardiovascular events, dementia or persistent physical disability. Disab...
The Indian River Lagoon (IRL) on Florida’s east coast is a biologically diverse estuary and an important habitat to the threatened Florida manatee ( Trichechus manatus latirostris ). An unusual mortality event (UME) was declared by the Working Group on Marine Mammal Unusual Mortality Events in 2013 after a marked increase in manatee deaths in the IRL of an unknown cause. This UME followed a dramatic reduction of seagrass cover...
Effects of oxycodone on brain responses to emotional imagesNARA Subscribed
Summary Changes in environmental conditions and prokaryote physiology can strongly affect the dynamics of both the lysogenic and lytic bacteriophage replication cycles in aquatic systems. However, it remains unclear whether it is the nature, amplitude or frequency of these changes that alter the phage replication cycles. We performed an annual survey of three Mediterranean lagoons with contrasting levels of chlorophyll a conce...
Effects of amphetamine on reactivity to emotional stimuliNARA Subscribed