| 1. |
- Beal, Jacob, et al.
(författare)
-
Robust estimation of bacterial cell count from optical density
- 2020
-
Ingår i: Communications Biology. - : Springer Science and Business Media LLC. - 2399-3642. ; 3:1
-
Tidskriftsartikel (refereegranskat)abstract
- Optical density (OD) is widely used to estimate the density of cells in liquid culture, but cannot be compared between instruments without a standardized calibration protocol and is challenging to relate to actual cell count. We address this with an interlaboratory study comparing three simple, low-cost, and highly accessible OD calibration protocols across 244 laboratories, applied to eight strains of constitutive GFP-expressing E. coli. Based on our results, we recommend calibrating OD to estimated cell count using serial dilution of silica microspheres, which produces highly precise calibration (95.5% of residuals <1.2-fold), is easily assessed for quality control, also assesses instrument effective linear range, and can be combined with fluorescence calibration to obtain units of Molecules of Equivalent Fluorescein (MEFL) per cell, allowing direct comparison and data fusion with flow cytometry measurements: in our study, fluorescence per cell measurements showed only a 1.07-fold mean difference between plate reader and flow cytometry data.
|
|
| 2. |
- Kehoe, Laura, et al.
(författare)
-
Make EU trade with Brazil sustainable
- 2019
-
Ingår i: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 364:6438, s. 341-
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
|
|
| 3. |
|
|
| 4. |
- Scott, Alister, et al.
(författare)
-
UK National Ecosystem Assessment Follow-on : Work Package Report 10: Tools, Applications, Benefits and Linkages for Ecosystem Science (TABLES)
- 2014
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Over an 18 month period, the Tools: Applications, Benefits and Linkages for Ecosystems (TABLES) project has worked at the interface of research, policy and practice, crossing different disciplines, sectors and professions, to embed the value of nature more effectively into policies, programmes, plans or projects and thus improve decision -making processes and outcomes.Our main focus has been on translating the 12 principles of the Ecosystem Approach into comprehensive advice within which a set of tools can utilise an Ecosystem Services Framework . The interdisciplinary TABLES team, consisting of academics, professionals in practice, community members and policy makers, championed co-production and social learning strategies using member expertise and experience within diverse case studies. These span the environment, business, local community and planning sectors; all of which are trying to mainstream an Ecosystem Approach to some extent.The project addresses the recommendations of the UK National Ecosystem Assessment (UK NEA, 2011a, 1303) to integrate ecosystem services and the wider values of the natural environment within a context of policy and decision-making and tools leading to a superior basis for future decision-making.
|
|
| 5. |
- Tiegs, Scott D., et al.
(författare)
-
Global patterns and drivers of ecosystem functioning in rivers and riparian zones
- 2019
-
Ingår i: Science Advances. - Washington : American Association of Advancement in Science. - 2375-2548. ; 5:1
-
Tidskriftsartikel (refereegranskat)abstract
- 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.
|
|
