Dr Jon Bielby

B.Sc. (hons), M.Sc., Ph.D.

Population Modelling Biologist

I joined the Chester Zoo team in October 2017. Since graduating from Leeds University with an MSc in Biodiversity and Conservation, over 15 years ago, I have worked at the interface between academic research and applied conservation.

My main area of research and conservation interest is how and why populations of species vary in their response to threat processes; for example asking why different species in the same location experience different levels of extinction risk or susceptibility to population declines.

My experience includes working with many different types of animals, including freshwater invertebrates, freshwater fish, amphibians, reptiles and mammals.  I have also researched the impacts of many different threatening processes, such as deforestation, introduced species, but I have had a special focus on infectious disease, particularly those of amphibians.

Partners and Collaborators

  • The Natural History Museum of Madrid,
  • The Zoological Society of London,
  • The Natural History Museum, London
  • Zirichiltaggi, Sardinia

Key publications

Turvey, S., T., Crees, J., J., Li, Z., Bielby, J., Yuan, J. 2017. Long-term archives reveal shifting extinction selectivity in China’s postglacial mammal fauna. Proceedings of the Royal Society B: Biological Sciences.

Vaira, M., Pereyra, L., C., Akmentins, M., S., Bielby, J. 2017. Conservation status of amphibians of Argentina: An update and evaluation of national assessments. Amphibian & Reptile Conservation, 11 (1), 36-44.

Bielby, J., Vial, F., Woodroffe, R., Donnelly, C., A. 2016. Localised Badger Culling Increases Risk of Herd Breakdown on Nearby, Not Focal, Land. PloS ONE, 11 (10).

Fernández-Beaskoetxea, S., Bosch, S., Bielby, J. 2016. Infection and transmission heterogeneity of a multi-host pathogen (Batrachochytrium dendrobatidis) within an amphibian community. Diseases of Aquatic Organisms, 118 (1), 11-20.

Bland, L., M., Orme, C., D., L., Bielby, J., Collen, B., Nicholson, E., McCarthy, M., A. 2015. Cost‐effective assessment of extinction risk with limited information. Journal of applied ecology, 52 (4), 861-870.

​Bland, L., M., Collen, B., Orme, C., D., L., Bielby, J. Predicting the conservation status of data‐deficient species. Conservation Biology, 29 (1), 250-259.

Bielby, J., Donnelly, C., A., Pope, L., C., Burke, T., Woodroffe, R. 2014. Badger responses to small-scale culling may compromise targeted control of bovine tuberculosis. Proceedings of the National Academy of Sciences, 111 (25), 9193-9198.

Brooke, Z., M., Bielby, J., Nambiar, K., Carbone, C. 2014. Correlates of research effort in carnivores: body size, range size and diet matter. PloS ONE, 9 (4).  

Baláž, V., Vörös, J., Civiš, P., Vojar, J., Hettyey, A., Sos, E., Dankovics, R., Jehle, R., Christiansen, D., G., Clare, F., Fisher, M., C., Garner, T., W., J., Bielby, J. 2013. Assessing risk and guidance on monitoring of Batrachochytrium dendrobatidis in Europe through identification of taxonomic selectivity of infection. Conservation biology, 28 (1), 213-223.

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