Monthly Archives: May 2017

Decline of the cats – the precipice is nearer than we think

In 1970 there were nearly 40,000 tigers. In the late 1990s this was estimated to be 5,000 – 7,000. Today there are less than 4000.

The global cheetah population has declined startlingly to today’s count of just 7,100 individuals, confined to 9% of its historical distributional range (Durant et al, 2017). 60 – 70% of previous lion and cheetah habitats in West and Central African protected areas have  seen recent disappearance of both species (Brugière, Chardonnet, & Scholte, 2015).

In 2013 analyses established that the African lion has lost at least 75% of its original habitat, with fewer than 35,000 wild African lions remaining (Riggio et al (2013).Bauer et al. ( 2015 ) assessed the trend of 47 relatively well-monitored lions in Africa, and found an alarming population decline of about 38 % over 21 years (1993–2014). In 2015 the IUCN estimated that fewer than 20,000 lions remain. Worse, it has been suggested that only 6 populations should be considered as biologically viable.

Even the adaptable leopard is now disappearing from areas of its previous range (Giordano et al , 2017).

Threats to large cats include conflict with humans, reduction of habitat and decline of prey species, all of which are inter-connected. The picture is bleak.

Further reading:

Bauer, H., Packer, C., Funston, P.F., Henschel, P. & Nowell, K. 2016. Panthera leo. The IUCN Red List of Threatened Species 2016: e.T15951A97162455.

Brugière, D., Chardonnet, B., & Scholte, P. (2015). Large-scale extinction of large carnivores (lion Panthera leo, cheetah Acinonyx jubatus and wild dog Lycaon pictus) in protected areas of West and Central Africa. Tropical Conservation Science, 8(2), 513-527.

Durant, S. M., Mitchell, N., Groom, R., Pettorelli, N., Ipavec, A., Jacobson, A. P., … & Broekhuis, F. (2017). The global decline of cheetah Acinonyx jubatus and what it means for conservation. Proceedings of the National Academy of Sciences, 114(3), 528-533.

Giordano, A. J., Tumenta, P. N., & Iongh, H. H. (2017). Camera‐trapping confirms unheralded disappearance of the leopard (Panthera pardus) from Waza National Park, Cameroon. African Journal of Ecology.

Goodrich, J., Lynam, A., Miquelle, D., Wibisono, H., Kawanishi, K., Pattanavibool, A., … & Karanth, U. (2016). Panthera tigris. The IUCN Red List of Threatened Species 2015: e. T15955A50659951.

Riggio J, Jacobson A, Dollar L, Bauer H, Becker M, et al. (2013) The size of savannah Africa: a lion’s (Panthera leo) view. Biodiversity and Conservation 22: 17–35.

Sandom, C. J., Faurby, S., Svenning, J. C., Burnham, D., Dickman, A., Hinks, A., … & Macdonald, D. (2017). Learning from the past to prepare for the future: Felids face continued threat from declining prey richness. Ecography.