Pantropical geography of lightning-caused disturbance and its implications for tropical forests

© 2020 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 26(2020), 9 vom: 21. Sept., Seite 5017-5026
1. Verfasser: Gora, Evan M (VerfasserIn)
Weitere Verfasser: Burchfield, Jeffrey C, Muller-Landau, Helene C, Bitzer, Phillip M, Yanoviak, Stephen P
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article carbon cycling large trees savannas tree mortality tropical terrestrial ecosystems woody biomass turnover
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520 |a Lightning is a major agent of disturbance, but its ecological effects in the tropics are unquantified. Here we used ground and satellite sensors to quantify the geography of lightning strikes in terrestrial tropical ecosystems, and to evaluate whether spatial variation in lightning frequency is associated with variation in tropical forest structure and dynamics. Between 2013 and 2018, tropical terrestrial ecosystems received an average of 100.4 million lightning strikes per year, and the frequency of strikes was spatially autocorrelated at local-to-continental scales. Lightning strikes were more frequent in forests, savannas, and urban areas than in grasslands, shrublands, and croplands. Higher lightning frequency was positively associated with woody biomass turnover and negatively associated with aboveground biomass and the density of large trees (trees/ha) in forests across Africa, Asia, and the Americas. Extrapolating from the only tropical forest study that comprehensively assessed tree damage and mortality from lightning strikes, we estimate that lightning directly damages c. 832 million trees in tropical forests annually, of which c. 194 million die. The similarly high lightning frequency in tropical savannas suggests that lightning also influences savanna tree mortality rates and ecosystem processes. These patterns indicate that lightning-caused disturbance plays a major and largely unappreciated role in pantropical ecosystem dynamics and global carbon cycling 
650 4 |a Journal Article 
650 4 |a carbon cycling 
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650 4 |a savannas 
650 4 |a tree mortality 
650 4 |a tropical terrestrial ecosystems 
650 4 |a woody biomass turnover 
700 1 |a Burchfield, Jeffrey C  |e verfasserin  |4 aut 
700 1 |a Muller-Landau, Helene C  |e verfasserin  |4 aut 
700 1 |a Bitzer, Phillip M  |e verfasserin  |4 aut 
700 1 |a Yanoviak, Stephen P  |e verfasserin  |4 aut 
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