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The projected timing of abrupt ecological disruption from climate change Trisos, C.H.; Merow, C.; Pigot, A.L. (2020). The projected timing of abrupt ecological disruption from climate change. Nature (Lond.) 580(7804): 496-501. https://dx.doi.org/10.1038/s41586-020-2189-9 In: Nature: International Weekly Journal of Science. Nature Publishing Group: London. ISSN 0028-0836; e-ISSN 1476-4687, meer Is gerelateerd aan: Sunday, J.M. (2020). The pace of biodiversity change in a warming climate. Nature (Lond.) 580(7804): 460-461. https://dx.doi.org/10.1038/d41586-020-00975-9, meer Trisos, C.H.; Merow, C.; Pigot, A.L. (2021). Reply to: Spatial scale and the synchrony of ecological disruption. Nature (Lond.) 599(7886): E11-E13. https://dx.doi.org/10.1038/s41586-021-03760-4, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 349737 [ aanvragen ]

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Auteurs		Top
Trisos, C.H. Merow, C. Pigot, A.L.

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Abstract

As anthropogenic climate change continues the risks to biodiversity will increase over time, with future projections indicating that a potentially catastrophic loss of global biodiversity is on the horizon1,2,3. However, our understanding of when and how abruptly this climate-driven disruption of biodiversity will occur is limited because biodiversity forecasts typically focus on individual snapshots of the future. Here we use annual projections (from 1850 to 2100) of temperature and precipitation across the ranges of more than 30,000 marine and terrestrial species to estimate the timing of their exposure to potentially dangerous climate conditions. We project that future disruption of ecological assemblages as a result of climate change will be abrupt, because within any given ecological assemblage the exposure of most species to climate conditions beyond their realized niche limits occurs almost simultaneously. Under a high-emissions scenario (representative concentration pathway (RCP) 8.5), such abrupt exposure events begin before 2030 in tropical oceans and spread to tropical forests and higher latitudes by 2050. If global warming is kept below 2 °C, less than 2% of assemblages globally are projected to undergo abrupt exposure events of more than 20% of their constituent species; however, the risk accelerates with the magnitude of warming, threatening 15% of assemblages at 4 °C, with similar levels of risk in protected and unprotected areas. These results highlight the impending risk of sudden and severe biodiversity losses from climate change and provide a framework for predicting both when and where these events may occur.

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