The impact of hurricanes Irma and Maria on the forest ecosystems of Saba and St. Eustatius, northern Caribbean

Abstract In September 2017, Irma became the first recorded category 5 hurricane to hit the Caribbean Windward Islands. The second category 5, Maria, followed two weeks later. In November 2017, we assessed the structural impact of this disturbance on highly valued Caribbean forest ecosystems. We recorded the status of 935 tree stems on Saba and St. Eustatius in stands at different elevations. Tree damage was substantial on both islands, with 93 percent of stems being defoliated, 84 percent having lost primary and/or secondary branches and 36 percent having structural stem damage. Average tree m... Mehr ...

Verfasser: Eppinga, Maarten B.
Pucko, Carolyn A.
Dokumenttyp: Artikel
Erscheinungsdatum: 2018
Reihe/Periodikum: Biotropica ; volume 50, issue 5, page 723-728 ; ISSN 0006-3606 1744-7429
Verlag/Hrsg.: Wiley
Schlagwörter: Ecology / Evolution / Behavior and Systematics
Sprache: Englisch
Permalink: https://search.fid-benelux.de/Record/base-26862450
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : http://dx.doi.org/10.1111/btp.12600

Abstract In September 2017, Irma became the first recorded category 5 hurricane to hit the Caribbean Windward Islands. The second category 5, Maria, followed two weeks later. In November 2017, we assessed the structural impact of this disturbance on highly valued Caribbean forest ecosystems. We recorded the status of 935 tree stems on Saba and St. Eustatius in stands at different elevations. Tree damage was substantial on both islands, with 93 percent of stems being defoliated, 84 percent having lost primary and/or secondary branches and 36 percent having structural stem damage. Average tree mortality was 18 percent, with mortality being nearly twice as high on St. Eustatius than on Saba. Surprisingly, we found that neither individual stem size nor community size distributions mediated the forests’ response to the hurricanes. Our results show that these hurricanes comprised a density‐independent disturbance, which may become more common as the frequency of strong hurricanes is projected to increase.