El Nino events may impact wildlife populations in Singapore

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As of August 30, 2026, experts warned that increasingly frequent and extreme El Nino events threatened Singapore’s native wildlife populations while potentially benefiting human-adapted pests. Research indicated that hotter and drier weather conditions accelerated life cycles for Aedes aegypti mosquitoes, concurrently elevating dengue risks during the peak season from May to October. While species such as cockroaches, pigeons, and mynas utilized human infrastructure to maintain stable populations, native animals like macaques, boars, and the endangered Raffles’ Banded Langur faced increased environmental stress.

Consequences

The shift in climate patterns is expected to disrupt food sources and reproductive success for urban-adapted species that rely on natural ecosystems rather than human waste. Conversely, human-commensal populations, particularly disease-carrying insects, are likely to thrive, potentially complicating public health efforts to manage dengue transmission in dense urban environments.

Sources

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