All Outputs (5)

Defining the habitat niche of Alopecurus myosuroides at the field scale (2018)
Journal Article
Metcalfe, H., Milne, A., Webster, R., Lark, R., Murdoch, A., Kanelo, L., & Storkey, J. (in press). Defining the habitat niche of Alopecurus myosuroides at the field scale. Weed Research, https://doi.org/10.1111/wre.12300

The distribution of Alopecurus myosuroides (black-grass) in fields is patchy. The locations of these patches can be influenced by the environment. This presents an opportunity for precision management through patch spraying. We surveyed five fields o... Read More about Defining the habitat niche of Alopecurus myosuroides at the field scale.

The singularity index for soil geochemical variables, and a mixture model for its interpretation (2018)
Journal Article
Lark, R., Patton, M., Ander, E., & Reay, D. (2018). The singularity index for soil geochemical variables, and a mixture model for its interpretation. Geoderma, 323, https://doi.org/10.1016/j.geoderma.2018.02.032

A geochemical anomaly is a concentration of an element or other constituent in a medium (soil, sediment or surface water) which is unusual in its local setting. Geochemical anomalies may be interesting as indicators of processes such as point contami... Read More about The singularity index for soil geochemical variables, and a mixture model for its interpretation.

When unlikely outcomes occur: the role of communication format in maintaining communicator credibility (2018)
Journal Article
Jenkins, S. C., Harris, A. J., & Lark, M. (2019). When unlikely outcomes occur: the role of communication format in maintaining communicator credibility. Journal of Risk Research, 22(5), 537-554. https://doi.org/10.1080/13669877.2018.1440415

The public expects science to reduce or eliminate uncertainty (Kinzig & Starrett, 2003), yet scientific forecasts are probabilistic (at best) and it is simply not possible to make predictions with certainty. Whilst an ‘unlikely’ outcome is not expect... Read More about When unlikely outcomes occur: the role of communication format in maintaining communicator credibility.

Analysis of variance in soil research: let the analysis fit the design (2018)
Journal Article
Webster, R., & Lark, R. (2018). Analysis of variance in soil research: let the analysis fit the design. European Journal of Soil Science, 69(1), 126-139. https://doi.org/10.1111/ejss.12511

Sound design for experiments on soil is based on two fundamental principles: replication and randomization. Replication enables investigators to detect and measure contrasts between treatments against the backdrop of natural variation. Random allocat... Read More about Analysis of variance in soil research: let the analysis fit the design.

How should a spatial-coverage sample design for a geostatistical soil survey be supplemented to support estimation of spatial covariance parameters? (2018)
Journal Article
Lark, M., & Marchant, B. (2018). How should a spatial-coverage sample design for a geostatistical soil survey be supplemented to support estimation of spatial covariance parameters?. Geoderma, 319, https://doi.org/10.1016/j.geoderma.2017.12.022

We use an expression for the error variance of geostatistical predictions, which includes the effect of uncertainty in the spatial covariance parameters, to examine the performance of sample designs in which a proportion of the total number of observ... Read More about How should a spatial-coverage sample design for a geostatistical soil survey be supplemented to support estimation of spatial covariance parameters?.