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Sökning: WFRF:(Lyon Steve W. 1978 ) > (2024)

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1.
  • Scaini, Anna, et al. (författare)
  • Pathways from research to sustainable development: Insights from ten research projects in sustainability and resilience
  • 2024
  • Ingår i: AMBIO. - : SPRINGER. - 0044-7447 .- 1654-7209.
  • Tidskriftsartikel (refereegranskat)abstract
    • Drawing on collective experience from ten collaborative research projects focused on the Global South, we identify three major challenges that impede the translation of research on sustainability and resilience into better-informed choices by individuals and policy-makers that in turn can support transformation to a sustainable future. The three challenges comprise: (i) converting knowledge produced during research projects into successful knowledge application; (ii) scaling up knowledge in time when research projects are short-term and potential impacts are long-term; and (iii) scaling up knowledge across space, from local research sites to larger-scale or even global impact. Some potential pathways for funding agencies to overcome these challenges include providing targeted prolonged funding for dissemination and outreach, and facilitating collaboration and coordination across different sites, research teams, and partner organizations. By systematically documenting these challenges, we hope to pave the way for further innovations in the research cycle.
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2.
  • Wong, Tyler, et al. (författare)
  • Grain size estimation in fluvial gravel bars using uncrewed aerial vehicles : A comparison between methods based on imagery and topography
  • 2024
  • Ingår i: Earth Surface Processes and Landforms. - 0197-9337 .- 1096-9837. ; 49:1, s. 374-392
  • Tidskriftsartikel (refereegranskat)abstract
    • Grain size assessments are necessary for understanding the various geomorphological, hydrological and ecological processes that occur within rivers. Recent research has shown that the application of Structure-from-Motion (SfM) photogrammetry to imagery from uncrewed aerial vehicles (UAVs) shows promise for rapidly characterising grain sizes along rivers in comparison to traditional field-based methods. Here, we evaluated the applicability of different methods for estimating grain sizes in gravel bars along a study reach in the Olentangy River in Columbus, Ohio. We collected imagery of these gravel bars with a UAV and processed those images with SfM photogrammetry software to produce three-dimensional point clouds and orthomosaics. Our evaluation compared statistical models calibrated on topographic roughness, which was computed from the point clouds, and to those based on image texture, which was computed from the orthomosaics. Our results showed that statistical models calibrated on image texture were more accurate than those based on topographic roughness. This might be because of site-specific patterns of grain size, shape and imbrication. Such patterns would have complicated the detection of topographic signatures associated with individual grains. Our work illustrates that UAV-SfM approaches show potential to be used as an accessible method for characterising surface grain sizes along rivers at higher spatial and temporal resolutions than those provided by traditional methods.
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