Hurricanes increase tropical forest vulnerability to drought

Smith‐Martin, Chris M.; Muscarella, Robert; Ankori‐Karlinsky, Roi; Delzon, Sylvain; Farrar, Samuel L.; Salva‐Sauri, Melissa; Thompson, Jill; Zimmerman, Jess K.; Uriarte, María. 2022 Hurricanes increase tropical forest vulnerability to drought. New Phytologist, 235 (3). 1005-1017.

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• Rapid changes in climate and disturbance regimes, including droughts and hurricanes, are likely to influence tropical forests, but our understanding of the compound effects of disturbances on forest ecosystems is extremely limited. Filling this knowledge gap is necessary to elucidate the future of these ecosystems under a changing climate. • We examined the relationship between hurricane response (damage, mortality, and resilience) and four hydraulic traits of 13 dominant woody species in a wet tropical forest subject to periodic hurricanes. • Species with high resistance to embolisms (low P50 values) and higher safety margins (SMP50 ) were more resistant to immediate hurricane mortality and breakage, whereas species with higher hurricane resilience (rapid post-hurricane growth) had high capacitance and P50 values and low SMP50. During 26 yr of post-hurricane recovery, we found a decrease in community-weighted mean values for traits associated with greater drought resistance (leaf turgor loss point, P50, SMP50 ) and an increase in capacitance, which has been linked with lower drought resistance. • Hurricane damage favors slow-growing, drought-tolerant species, whereas post-hurricane high resource conditions favor acquisitive, fast-growing but drought-vulnerable species, increasing forest productivity at the expense of drought tolerance and leading to higher overall forest vulnerability to drought.

Item Type: Publication - Article
Digital Object Identifier (DOI):
UKCEH and CEH Sections/Science Areas: Biodiversity (Science Area 2017-)
ISSN: 0028-646X
Additional Keywords: coastal tropical forests, cyclonic storm, forest succession, Hurricane Hugo, P50 xylem optical vulnerability curves, plant hydraulics, plant–climate interactions, tropical trees and palms
NORA Subject Terms: Ecology and Environment
Date made live: 19 Jul 2022 13:13 +0 (UTC)

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