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[accessory transects] - Summed coral cover along the four accessory transects in St. John from 1989 to 2017 (RUI-LTREB Renewal: Three decades of coral reef community dynamics in St. John, USVI: 2014-2019)

Listed in Biological and Chemical Oceanography Data Management Office (BCO-DMO) ERDDAP

These files contain data that support an analysis of the effects of two major hurricanes on coral reefs that have been extensively studied for more than three decades.

Description

Major tropical storms are destructive phenomena with large effects on the community dynamics of multiple biomes. On coral reefs, their impacts have been described for decades, leading to the expectation that future storms should have effects similar to those recorded in the past.

This expectation relies on the assumption that storm intensities will remain unchanged, and the impacted coral reef communities are similar to those of the recent past; neither assumption is correct. These data support a study quantifying the effects of two category five hurricanes on the reefs of St. John, US Virgin Islands, where 31 y of time-series analyses reveal chronic coral mortality, increasing macroalgal abundance, and five major hurricanes that caused acute coral mortality.

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Contextualized by these trends, the effects of the most recent storms, Hurricanes Irma and Maria (September 2017), on coral cover were modest. While mean absolute coral cover declined 1\u20134% depending on site, these effects were not statistically discernable. Following decades of increasing abundance of macroalgae, this functional group responded to the recent hurricanes with large increases in abundance on both absolute and relative scales.

Decades of chronic mortality have changed the coral assemblages of St. John to create degraded communities that are resistant to severe storms.

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Catalogue records · 1

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Provenance · 1 source records, 4 field assertions
SourceKeyLast seenRaw
Biological and Chemical Oceanography Data Management Office (BCO-DMO) ERDDAPbcodmo_dataset_75026513 d agoJSON v1
FieldAssertionExtractorEvidence
access_levelsource · erddap bco dmo orgconnector:erddap_bco_dmo_org@1.0.0
concepts[field].local:field:ocean-atmosphericmapping · erddap bco dmo orgconnector:erddap_bco_dmo_org@1.0.0
descriptionsource · erddap bco dmo orgconnector:erddap_bco_dmo_org@1.0.0/summary
titlesource · erddap bco dmo orgconnector:erddap_bco_dmo_org@1.0.0/title