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CARDAT stores a wide array of population, health and environmental datasets. There are three types of data:

A catalogue of these datasets, including metadata in Ecological Metadata Language (EML) format is kept in the CAR data inventory. These records are published here.

Access to CARDAT data is administered by the CAR data management team (

Data cleaning

It is inevitable that the data we work has imperfections. As part of storing data in CARDAT or EHI we often take steps to clean the data. When this is done, we always:

This ensures that the transformation process is transparent and reproducible.

Data cleaning steps

There are many issues with data that we see again and again when dealing with data. When cleaning data there are a number of things that may be required, including:


White, E., Baldridge, E., Brym, Z., Locey, K., McGlinn, D., & Supp, S. 2013. Nine simple ways to make it easier to (re)use your data. Ideas in Ecology and Evolution, 6(2), 1–10. doi:10.4033/iee.2013.6b.6.f

Wickham, H., 2014. Tidy Data. Journal of Statistical Software, VV (Ii). Available at:

Leek, J. 2014.

Borer, E., Sea bloom, E., Jones, M., and Schildhauer, M. 2009. Some Simple Guidelines for Effective Data Management. Bulletin of the Ecological Society of America 90:205–214.

Campbell, J. L., Rustad, L. E., Porter, J. H., Taylor, J. R., Dereszynski, E. W., Shanley, J. B., Gries, C., Henshaw, D. L., Martin, M. E., Sheldon, W. M., and Boose, E. R. 2013. Quantity is Nothing without Quality: Automated QA/QC for Streaming Environmental Sensor Data. BioScience, 63, 574-585.