As a biogeographer with decades-long interest in Earth’s ecosystems, I have grave concerns for the future of our planet’s biosphere. Human activities are pushing the living systems of Earth to the brink of collapse. It is prudent to consider and plan for the worst-case scenarios that may develop.
The biosphere – the thin layer of life encompassing our planet – is under assault. Our activities are disrupting every level of biological organization, from genes to ecosystems. The general response of the biosphere to these impacts is one of simplification, homogenization, and collapse (Bland et al. 2018, McGuire 2022).
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