Australia’s rodent surges: monoculture farming, climate shocks, and ecological imbalance driving cyclical plagues

Indigenous Australian land management, including cultural burning and seed-saving practices, historically maintained ecosystems that suppressed rodent populations by reducing monoculture dominance and increasing biodiversity. Fire mosaics and patchwork landscapes created habitats that discouraged mass rodent breeding, a practice disrupted by colonial agriculture. Modern Indigenous ranger programs (e.g., Martu in the Pilbara) are reviving these techniques to restore ecological balance, yet their role in pest mitigation is rarely acknowledged in mainstream narratives.

Mouse plagues in Australia are not new; records date back to the 1860s, with peaks tied to European settlement’s disruption of Indigenous land management and the introduction of monoculture wheat farming. The 1993 and 2021 plagues followed similar patterns: drought-breaking rains after prolonged dry spells, which triggered mass vegetation growth and subsequent rodent booms in grain belts. Historical parallels exist globally, such as the 1950s ‘mouse plagues’ in California’s Central Valley, where industrial agriculture and pesticide use exacerbated rodent outbreaks.

Cross-culturally, rodent plagues are often framed as ‘natural’ disasters, but many societies have developed systemic solutions. In China, the ‘Four Pests Campaign’ (1958–62) initially targeted rodents with DDT but later shifted to integrated pest management, including community trapping and habitat modification. In East Africa, the Maasai use livestock grazing patterns to disrupt rodent breeding cycles, while in Mexico, the Zapotec employ ‘milpa’ systems that diversify crops and reduce pest vulnerabilities.

Scientific research confirms that monoculture cropping systems, particularly wheat and barley, create ideal conditions for mouse plagues due to abundant food and lack of predators in simplified landscapes. Studies show that neonicotinoid pesticides, widely used in Australian agriculture, disrupt rodent reproduction and increase resistance, exacerbating long-term infestation risks. Climate variability—amplified by anthropogenic warming—intensifies these cycles by altering rainfall patterns that trigger synchronous vegetation growth and rodent breeding.

Artistic and spiritual traditions often personify rodents as tricksters or omens, reflecting their role as disruptors of human control over nature. In Aboriginal Dreamtime stories, the ‘Rat Kangaroo’ (Potoroo) is a figure of balance, teaching humans about the cyclical nature of abundance and scarcity. Contemporary Australian art, such as Emily Kame Kngwarreye’s paintings, subtly critiques the ecological violence of industrial agriculture by depicting landscapes as living, interconnected systems rather than resources to be exploited.

Future modelling suggests that without systemic changes, mouse plagues will intensify with climate change, particularly in Australia’s wheat belts where temperature rises and erratic rainfall favor rodent population explosions. Scenario planning by CSIRO indicates that regenerative agriculture—integrating cover crops, reduced tillage, and predator-friendly habitats—could reduce plague frequency by 40–60% within a decade. Conversely, continued reliance on chemical solutions risks creating pesticide-resistant ‘super mice’ and further destabilizing ecosystems.

Marginalized voices—Indigenous farmers, small-scale growers, and rural women—are systematically excluded from mainstream discussions on pest management, despite their disproportionate burden from rodent damage and pesticide exposure. Women in subsistence farming communities often bear the brunt of rodent infestations in food stores, yet their traditional knowledge of natural repellents (e.g., chili pepper barriers) is dismissed in favor of corporate solutions. The erasure of these voices reinforces a colonial narrative that frames Indigenous knowledge as ‘primitive’ rather than sophisticated ecological science.

The trickster figure here is the mouse itself—a liminal creature that exposes the absurdity of human attempts to dominate nature through monoculture and chemicals. Like Hermes, the mouse navigates boundaries between human and wild spaces, revealing the fragility of industrial systems. The plague’s cyclical nature mocks the hubris of agribusiness, which assumes it can outsmart ecological complexity with ever-more toxic solutions. As Bakhtin’s carnivalesque, the mouse plague disrupts the solemnity of ‘progress,’ forcing a reckoning with the costs of unsustainable farming.