- The Wallacean shortfall refers to the lack of comprehensive knowledge about the geographic distribution of species, limiting our understanding of where organisms occur.
- Named after Alfred Russel Wallace, the pioneer of biogeography, it highlights gaps in species distribution data essential for biodiversity research.
- Addressing the Wallacean shortfall is crucial for conservation planning, habitat management, species monitoring, and climate change adaptation.
APSC Relevance: Biodiversity; Biogeography
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