Management of cats and rodents on inhabited islands: An overview and case study of Fernando de Noronha, Brazil

Successful cat and rodent eradication on uninhabited or sparsely populated islands has significantly contributed to species conservation, yet similar efforts on inhabited islands remain limited. A study analyzing Fernando de Noronha, a Brazilian oceanic island, reveals that localized control measures have historically prioritized agriculture, human livelihoods, and animal welfare over native biodiversity conservation. Challenges in inhabited-island management stem from complex social dynamics, including perceived or actual lack of resident or administrative support, differing priorities between control versus eradication, and socioeconomic factors. The study provides abundance estimates for cats and density estimates for rats on Fernando de Noronha, along with documented biodiversity impacts, to inform future conservation strategies. Addressing these barriers is critical to preventing further decline and extinction of island fauna.

Russell, J. C., Abrahão, C. R., Silva, J. C. R., & Dias, R. A. (2018). Management of cats and rodents on inhabited islands: An overview and case study of Fernando de Noronha, Brazil. Perspectives in Ecology and Conservation, 16(4), 193–200. https://doi.org/10.1016/j.pecon.2018.10.005