No species left behind: borrowing strength to map data-deficient species


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Date

2025-07

Publication Type

Review Article

ETH Bibliography

yes

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Abstract

We lack the data needed to detect and understand biodiversity change for most species, despite some species having millions of observations. This unequal data coverage impedes conservation planning and our understanding of biodiversity patterns. The ‘borrowing strength’ approach leverages data-rich species to improve predictions for data-deficient species. We review multi- and joint-species distribution models that incorporate traits and phylogenies (termed ‘ancillary information’) and highlight how they could improve data-deficient spatial predictions. When ancillary information is informative of niche similarity, it has immense potential to improve estimates for data-deficient species distributions and address the Wallacean shortfall. While no statistical method can replace data-collection efforts, approaches discussed in this review offer an important contribution toward closing existing data gaps.

Publication status

published

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Book title

Volume

40 (7)

Pages / Article No.

699 - 711

Publisher

Elsevier

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Edition / version

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Subject

species distribution modeling; biodiversity; data gaps; conservation; traits; phylogeny

Organisational unit

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