Tiller, L.N., Williams, H.F.The elephant in the farm: long-term solutions are the key to coexistence (2021)
Anim. Conserv., 24: 733-734. https://doi.org/10.1111/acv.12741 show/hide summaryIn this current state of exponential human population growth, natural spaces are being eroded more than ever before. Human activities have modified and transformed over half of the global land surface (Chapin et al., 2000), causing extensive habitat loss and fragmentation, and leading to a global decline in species. The rapid conversion of forest to agriculture puts farmers on the frontline of conflict with wildlife, and nowhere is this more pronounced than in the tropics, where development is rapidly catching up with the West. In the tropics communities are forced to survive alongside the megaherbivores that are predominantly under control or extinguished from much of the developed world.
The most problematic animals for humans to live alongside are, arguably, elephants. Throughout much of elephant range in Asia and Africa, remaining elephant habitat is in the process of significant encroachment by humans, often with a front of edible crops that are highly preferred by such herbivores. These agricultural lands, on the edge of primary elephant habitat, can make for easily accessible resources for wildlife, and little is put in place to dissuade resident elephant herds from utilizing this resource. As a result, human-wildlife conflict is becoming a serious issue, and threatens the livelihoods of many of those living alongside megafauna, not to mention the threats to local elephant populations from retaliatory killings. Mitigating such situations often relies on translocating `problem animals’. In their paper, de la Torre et al. (2021) clearly show that such techniques are flawed. The overlap with elephants, in the peripheral agricultural landscapes, makes highly nutritious and abundant crops a readily available resource for elephants. Therefore, unless a constant stream of elephant translocations is a financially viable and sustainable solution, smarter methodologies need to be employed to create a model of coexistence where humans and elephants can live harmoniously together over the long term.
Cook, R.M., Parrini, F., King, L.E., Witkowski, E.T.F., Henley, M.DAfrican honeybees as a mitigation method for elephant impact on trees (2017)
Elsevier. Biological Conservation
Volume 217, January 2018, Pages 329-336
https://doi.org/10.1016/j.biocon.2017.11.024 show/hide summaryConservation managers are concerned about the impact that African elephants (Loxodonta africana) have on large tree species, necessitating the need for mitigation methods. Elephants actively avoid contact with African honeybees (Apis mellifera subsp. scutellata), staying clear of crop fields surrounded by beehive fence-lines and moving away from the sounds of swarming honeybees. Therefore, our objectives were to test whether the presence of beehives in trees influenced the likelihood of the tree receiving elephant impact, and compare these results to wire-netted (method used to prevent bark-stripping) and control (no treatment) trees. We selected a tree highly sought after by elephant, the marula tree (Sclerocarya birrea subsp. caffra), as our study species. We also assessed whether elephants avoided areas with marula trees containing beehives. Finally we provide a comparison of the financial costs of the beehive and wire-netting mitigation methods. We hung 50 active beehives in 50 trees, with 50 dummy beehives hung from branches on the opposite ends of each tree's main stem. We wire-netted another 50 trees and then assigned 50 trees as a control. Elephant impact on all 150 trees was measured prior to the addition of treatments and then post-treatment addition for 9 months. 54% of the control trees received some form of elephant impact, in comparison to 28% of the wire-netted trees and only 2% of the beehive trees. Wire-netting protected trees against bark-stripping but did not prevent elephants from breaking branches. Beehives proved to be the more effective mitigation method for elephant impact on large trees, although the presence of beehives did not prevent elephants from moving through the study site. The financial cost and maintenance required for the beehive mitigation method are greater than that of wire-netting, but the beehives can provide honey as an additive benefit on a small-scale usage level.