Elephants Losing Their Families: Sri Lanka Herds Hit Social Tipping Point

Sri Lanka – Gradual population losses pushed a group of wild Asian elephants in Sri Lanka past a social tipping point, breaking their communities into smaller, more isolated groups, a 12-year study has found.

Researchers led by Anastasia Madsen analysed 12 years of observations of 443 wild female Asian elephants. As deaths and permanent departures increasingly outpaced new arrivals, nearly 69% of the females originally tracked had disappeared from the study population by 2018.

The fragmentation was driven not only by the loss of individuals but also by the breakdown of weaker social ties among the elephants that remained, leaving the population less connected overall, the researchers found. Wild Asian elephants form complex societies built largely around maternal family ties, and poaching and conflict with humans have increased their deaths.

The researchers said such changes may further undermine the population's recovery, and that social relationships should be monitored alongside population numbers in wildlife conservation.

"Although the effects of declining elephant populations may feel remote to people living in countries without these species, their human impact can be far-reaching," Sydney Hope and Joshua Plotnik wrote in a related commentary.