16 research outputs found

    Global patterns and drivers of ecosystem functioning in rivers and riparian zones

    Get PDF
    River ecosystems receive and process vast quantities of terrestrial organic carbon, the fate of which depends strongly on microbial activity. Variation in and controls of processing rates, however, are poorly characterized at the global scale. In response, we used a peer-sourced research network and a highly standardized carbon processing assay to conduct a global-scale field experiment in greater than 1000 river and riparian sites. We found that Earth’s biomes have distinct carbon processing signatures. Slow processing is evident across latitudes, whereas rapid rates are restricted to lower latitudes. Both the mean rate and variability decline with latitude, suggesting temperature constraints toward the poles and greater roles for other environmental drivers (e.g., nutrient loading) toward the equator. These results and data set the stage for unprecedented “next-generation biomonitoring” by establishing baselines to help quantify environmental impacts to the functioning of ecosystems at a global scale

    Global Patterns and Drivers of Ecosystem Functioning in Rivers and Riparian Zones

    Get PDF
    River ecosystems receive and process vast quantities of terrestrial organic carbon, the fate of which depends strongly on microbial activity. Variation in and controls of processing rates, however, are poorly characterized at the global scale. In response, we used a peer-sourced research network and a highly standardized carbon processing assay to conduct a global-scale field experiment in greater than 1000 river and riparian sites. We found that Earth’s biomes have distinct carbon processing signatures. Slow processing is evident across latitudes, whereas rapid rates are restricted to lower latitudes. Both the mean rate and variability decline with latitude, suggesting temperature constraints toward the poles and greater roles for other environmental drivers (e.g., nutrient loading) toward the equator. These results and data set the stage for unprecedented “next-generation biomonitoring” by establishing baselines to help quantify environmental impacts to the functioning of ecosystems at a global scale

    An Optimization Model Based Decision Support System for Staff Scheduling Analysis in Healthcare Facilities

    Get PDF
    Staff scheduling is an important administrative function in healthcare facilities given the high cost of labor and the often critical nature of the service delivery process. These scheduling problems are notoriously difficult due to a number of factors including stochastic demand which varies by time of day and day of week, flexible scheduling policies such as full and part-time staff, and multiple shift lengths and start times. We describe an optimization based decision support system developed and implemented at a large tertiary care hospital to aid business analysts in solving tactical scheduling analysis problems for a wide range of hospital units including obstetrics, laboratory, transcription, surgery, and appointment scheduling clerks

    Global patterns and drivers of ecosystem functioning in rivers and riparian zones

    No full text
    River ecosystems receive and process vast quantities of terrestrial organic carbon, the fate of which depends strongly on microbial activity. Variation in and controls of processing rates, however, are poorly characterized at the global scale. In response, we used a peer-sourced research network and a highly standardized carbon processing assay to conduct a global-scale field experiment in greater than 1000 river and riparian sites. We found that Earth’s biomes have distinct carbon processing signatures. Slow processing is evident across latitudes, whereas rapid rates are restricted to lower latitudes. Both the mean rate and variability decline with latitude, suggesting temperature constraints toward the poles and greater roles for other environmental drivers (e.g., nutrient loading) toward the equator. These results and data set the stage for unprecedented “next-generation biomonitoring” by establishing baselines to help quantify environmental impacts to the functioning of ecosystems at a global scale.3F10-AC72-52D0 | Verónica Ferreirainfo:eu-repo/semantics/publishedVersio
    corecore