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Linked fire activity and climate whiplash in California during the early Holocene

Earth Sciences

Linked fire activity and climate whiplash in California during the early Holocene

J. Homann, J. L. Oster, et al.

This fascinating study by Julia Homann and colleagues reveals how fire activity, vegetation changes, and climate variability intertwined in early Holocene California, highlighting a critical interaction projected to intensify with climate change.

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Playback language: English
Abstract
This study investigates the relationship between fire activity, vegetation changes, and climate variability in California during the early Holocene using a high-resolution stalagmite record. Elevated levoglucosan concentrations in the stalagmite indicate increased fire activity during the 8.2 kyr event, coinciding with shifts in lignin oxidation products (LOPs) suggesting a transition to more woody vegetation. These changes are linked to increased hydroclimate volatility shown by carbon and calcium isotope proxies. The findings suggest a strong coupling between climate whiplash and fire activity in California during the early Holocene, a relationship projected to intensify with anthropogenic climate change.
Publisher
Nature Communications
Published On
Nov 23, 2022
Authors
Julia Homann, Jessica L Oster, Cameron B de Wet, Sebastian F M Breitenbach, Thorsten Hoffmann
Tags
fire activity
vegetation changes
climate variability
Holocene
California
climate change
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