COS 70-2 - Feacal microbial loads affect use of artificial waterholes by African elephants (Loxodonta africana)

Thursday, August 15, 2019: 8:20 AM
M112, Kentucky International Convention Center
Mduduzi Ndlovu, School of Biology and Environmental Sciences, University of Mpumalanga, Nelspruit, South Africa
Background/Question/Methods

In semi-arid protected areas, artificial waterholes ensure that water is locally available to animals for extended periods. However, artificial waterholes may limit animal movement, which contributes towards habitat deterioration. Challenges of artificial water provisioning worsen in the presence of ecosystem engineers like African elephants (Loxodonta africana), capable of transforming environments. Camera traps were used to monitor elephant visitation at 21 artificial waterholes in one of Africa’s largest game reserves, the Kruger National Park in South Africa. I also assessed if water quality parameters influenced elephant preference for certain waterholes. The study was carried out in the dry season amidst one of the worst droughts on record.

Results/Conclusions

There were no significant correlations between elephant abundance and water physicochemical properties. However, there was a strong negative correlation between elephant abundance and levels of Escherichia coli in water. Findings suggest that elephants avoid drinking water with high levels of faecal microbial loads. Whereas most studies addressing animal management in protected areas consider waterholes as homogeneous units, I posit that water quality could also determine local landscape use and movement patterns of key species like elephants, a finding with relevant implications in reserve management practices.