Research Repository

See what's under the surface


Nuclear weapons fallout 137Cs in temperate and tropical pine forest soils, 50 years post-deposition (2019)
Journal Article
Itthipoonthanakorn, T., Dann, S., Crout, N., & Shaw, G. (2019). Nuclear weapons fallout 137Cs in temperate and tropical pine forest soils, 50 years post-deposition. Science of the Total Environment, 660, 807-816. doi:10.1016/j.scitotenv.2019.01.073

Following nuclear releases to the environment, 137Cs (half-life 30 years) is a long-term contaminant of many ecosystems, including forests. We recently sampled soils under pine forests in temperate and tropical climates to test the hypothesis that mi... Read More

Changes in CO2 during ocean anoxic event 1d indicate similarities to other carbon cycle perturbations (2018)
Journal Article
Richey, J. D., Upchurch, G., Montañez, I. P., Lomax, B. H., Suarez, M. B., Crout, N. M., …Smith, J. J. (2018). Changes in CO2 during ocean anoxic event 1d indicate similarities to other carbon cycle perturbations. Earth and Planetary Science Letters, 491, doi:10.1016/j.epsl.2018.03.035. ISSN 0012-821X

Past greenhouse intervals of the Mesozoic were repeatedly punctuated by Ocean Anoxic Events (OAEs), major perturbations to the global carbon cycle and abrupt climate changes that may serve as relevant analogs for Earth’s greenhouse gas-forced climate... Read More

Determining the fate of selenium in wheat biofortification: an isotopically labelled field trial study (2017)
Journal Article
Mathers, A. W., Young, S. D., McGrath, S., Zhao, F., Crout, N. M., & Bailey, E. H. (in press). Determining the fate of selenium in wheat biofortification: an isotopically labelled field trial study. Plant and Soil, 420(1-2), doi:10.1007/s11104-017-3374-y. ISSN 0032-079X

Aims The principal aim of this research was to quantify retention of a single, realistic Se biofortification application (10 g ha-1) in contrasting soils over two growing seasons utilizing an enriched stable Se isotope (77Se) to discriminate between... Read More

Quantification of root water uptake in soil using X-ray Computed Tomography and image based modelling (2017)
Journal Article
Daly, K. R., Tracy, S. R., Crout, N. M., Mairhofer, S., Pridmore, T. P., Mooney, S. J., & Roose, T. (2017). Quantification of root water uptake in soil using X-ray Computed Tomography and image based modelling. Plant, Cell and Environment, 41(1), doi:10.1111/pce.12983. ISSN 0140-7791

Spatially averaged models of root-soil interactions are often used to calculate plant water uptake. Using a combination of X-ray Computed Tomography (CT) and image based modelling we tested the accuracy of this spatial averaging by directly calculati... Read More

Effects of incubation time and filtration method on Kd of indigenous selenium and iodine in temperate soils (2017)
Journal Article
Al Mahayni, T., Bailey, E. H., Crout, N. M., & Shaw, G. (2017). Effects of incubation time and filtration method on Kd of indigenous selenium and iodine in temperate soils. Journal of Environmental Radioactivity, 177, 84-90. doi:10.1016/j.jenvrad.2017.06.004

In this study, the effects of incubation time and the method of soil solution extraction and filtration on the empirical distribution coefficient (Kd) obtained by de-sorbing indigenous selenium (Se) and iodine (I) from arable and woodland soils under... Read More

The response of soil microbial diversity and abundance to long-term application of biosolids (2017)
Journal Article
Mossa, A., Dickinson, M. J., West, H. M., Young, S. D., & Crout, N. M. (2017). The response of soil microbial diversity and abundance to long-term application of biosolids. Environmental Pollution, 224, doi:10.1016/j.envpol.2017.02.056. ISSN 0269-7491

The disposal of biosolids poses a major environmental and economic problem. Agricultural use is generally regarded as the best means of disposal. However, its impact on soil ecosystems remains uncertain. Biosolids can improve soil properties by suppl... Read More

Derivation of irrigation requirements for radiological impact assessments (2016)
Journal Article
Almahayni, T., & Crout, N. M. (2016). Derivation of irrigation requirements for radiological impact assessments. Journal of Environmental Radioactivity, 164, doi:10.1016/j.jenvrad.2016.06.022. ISSN 0265-931X

When assessing the radiological impacts of radioactive waste disposal, irrigation using groundwater contaminated with releases from the disposal system is a principal means of crop and soil contamination. In spite of their importance for radiological... Read More

Iodine binding to humic acid (2016)
Journal Article
Bowley, H. E., Young, S. D., Ander, E. L., Crout, N. J., Watts, M. J., & Bailey, E. H. (2016). Iodine binding to humic acid. Chemosphere, 157, doi:10.1016/j.chemosphere.2016.05.028. ISSN 0045-6535

The rate of reactions between humic acid (HA) and iodide (I-) and iodate (IO3-) have been investigated in suspensions spiked with 129I at concentrations of 22, 44 and 88 µg L-1 and stored at 10oC. Changes in the speciation of 129I-, 129IO3- and mixe... Read More

Three-dimensional quantification of soil hydraulic properties using X-ray computed tomography and image-based modeling (2015)
Journal Article
Tracy, S. R., Daly, K. R., Sturrock, C. J., Crout, N. M., Mooney, S. J., & Roose, T. (2015). Three-dimensional quantification of soil hydraulic properties using X-ray computed tomography and image-based modeling. Water Resources Research, 51(2), doi:10.1002/2014WR016020. ISSN 0043-1397

We demonstrate the application of a high-resolution X-ray Computed Tomography (CT) method to quantify water distribution in soil pores under successive reductive drying. We focus on the wet end of the water release characteristic (WRC) (0 to −75 kPa)... Read More

Inter-varietal variation in caesium and strontium uptake by plants: a meta-analysis (2014)
Journal Article
Penrose, B., Beresford, N., Broadley, M., & Crout, N. (2015). Inter-varietal variation in caesium and strontium uptake by plants: a meta-analysis. Journal of Environmental Radioactivity, 139, 103-117. doi:10.1016/j.jenvrad.2014.10.005

Radiocaesium and radiostrontium enter the foodchain primarily via plant root uptake. Selecting varieties of crop that display low accumulation of these radionuclides has been suggested as an economically and socially acceptable remediation strategy f... Read More

An objective approach to model reduction: Application to the Sirius wheat model (2014)
Journal Article
Craigon, J., Cox, G., Crout, N., Jao, Y., Tarsitano, D., Wood, A., & Semenov, M. (2014). An objective approach to model reduction: Application to the Sirius wheat model. Agricultural and Forest Meteorology, 189-190(100), 211-219. doi:10.1016/j.agrformet.2014.01.010

An existing simulation model of wheat growth and development, Sirius, was evaluated through a systematic model reduction procedure. The model was automatically manipulated under software control to replace variables within the model structure with co... Read More

Towards the systematic simplification of mechanistic models (2006)
Journal Article
Cox, G., Gibbons, J., Wood, A., Ramsden, S., & Crout, N. J. (2006). Towards the systematic simplification of mechanistic models. Ecological Modelling, 198, ISSN 0304-3800

Mechanistic models used for prediction should be parsimonious, as models which are over-parameterised may have poor predictive performance. Determining whether a model is parsimonious requires comparisons with alternative model formulations with diff... Read More