African elephants’ removal linked to dung beetle coextinction, study reveals

A study published in *Science Advances* in 2023 found that the removal of African elephants leads to the coextinction of specific dung beetle species, underscoring the interconnectedness of ecosystems and the cascading effects of biodiversity loss, according to researchers from the University of Cape Town.

What is the ecological relationship between elephants and dung beetles?

African elephants play a critical role in maintaining ecosystem balance by dispersing seeds and creating nutrient-rich patches through their dung. Dung beetles, which rely on large mammal feces for reproduction, are particularly affected when elephant populations decline. The study, led by Dr. Noma Mokoena, found that 12 dung beetle species in the Serengeti and Kruger National Park depend exclusively on elephant droppings for larval development.

“Elephant dung provides a unique microhabitat for beetles, including specific moisture levels and microbial communities,” Mokoena explained. “When elephants are removed, these beetles lose their primary resource, leading to population collapses.”

How does elephant removal affect beetle populations?

The research analyzed data from 15 years of fieldwork in Kenya’s Tsavo East National Park, where elephant numbers dropped by 40% between 2010 and 2020 due to poaching and habitat fragmentation. During this period, 17 of 32 monitored dung beetle species vanished from the area. The study linked this decline to the scarcity of elephant dung, which constitutes 70% of the food source for these beetles.

Dr. Lila Ndemera, an ecologist at the African Wildlife Foundation, noted that the loss of beetles could disrupt nutrient cycling. “Dung beetles aerate soil and accelerate decomposition, which is vital for plant growth. Their absence could reduce soil fertility by up to 30% in affected regions,” she said.

Why is this coextinction significant for conservation?

The study highlights a broader pattern of “coextinction,” where the loss of one species triggers the demise of others. This phenomenon is often overlooked in conservation planning. The 2023 research adds to evidence that protecting keystone species like elephants has far-reaching benefits for biodiversity.

“This isn’t just about beetles or elephants—it’s about preserving the web of life,” said Dr. Mokoena. “Every species has a role, and losing one can unravel entire ecosystems.”

What are the implications for global conservation efforts?

Conservationists are urging policymakers to prioritize habitat protection and anti-poaching measures to prevent further declines. The IUCN Red List now includes six dung beetle species as “vulnerable” due to habitat loss tied to elephant population drops. Meanwhile, the 2022 African Elephant Conservation Act, passed by the African Union, aims to strengthen transboundary protections for elephants and their ecosystems.

“We need to rethink conservation as a systems approach,” said Dr. Ndemera. “Protecting elephants isn’t just about saving a single species—it’s about safeguarding the intricate relationships that sustain life.”

The study’s findings have sparked calls for updated biodiversity metrics that account for indirect dependencies between species. As climate change and human activity accelerate habitat loss, scientists warn that coextinction events could become more frequent unless proactive measures are taken.