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Revealing uncertainty in the status of biodiversity change
Johnson, T.F.; Beckerman, A.P.; Childs, D.Z.; Webb, T.J.; Evans, K.L.; Griffiths, C.A.; Capdevila, P.; Clements, C.F.; Besson, M.; Gregory, R.D.; Thomas, G.H.; Delmas, E.; Freckleton, R.P. (2024). Revealing uncertainty in the status of biodiversity change. Nature (Lond.) 628(8009): 788-794. https://dx.doi.org/10.1038/s41586-024-07236-z
In: Nature: International Weekly Journal of Science. Nature Publishing Group: London. ISSN 0028-0836; e-ISSN 1476-4687, meer
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| Auteurs | | Top |
- Johnson, T.F.
- Beckerman, A.P.
- Childs, D.Z.
- Webb, T.J., meer
- Evans, K.L.
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- Griffiths, C.A.
- Capdevila, P.
- Clements, C.F.
- Besson, M.
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- Gregory, R.D.
- Thomas, G.H.
- Delmas, E.
- Freckleton, R.P.
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| Abstract |
Biodiversity faces unprecedented threats from rapid global change. Signals of biodiversity change come from time-series abundance datasets for thousands of species over large geographic and temporal scales. Analyses of these biodiversity datasets have pointed to varied trends in abundance, including increases and decreases. However, these analyses have not fully accounted for spatial, temporal and phylogenetic structures in the data. Here, using a new statistical framework, we show across ten high-profile biodiversity datasets that increases and decreases under existing approaches vanish once spatial, temporal and phylogenetic structures are accounted for. This is a consequence of existing approaches severely underestimating trend uncertainty and sometimes misestimating the trend direction. Under our revised average abundance trends that appropriately recognize uncertainty, we failed to observe a single increasing or decreasing trend at 95% credible intervals in our ten datasets. This emphasizes how little is known about biodiversity change across vast spatial and taxonomic scales. Despite this uncertainty at vast scales, we reveal improved local-scale prediction accuracy by accounting for spatial, temporal and phylogenetic structures. Improved prediction offers hope of estimating biodiversity change at policy-relevant scales, guiding adaptive conservation responses. |
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