©2020 Biological and Chemical Oceanography Data Management Office.These data describe the abundance of Millepora species (as percent cover) at Cabritte Horn, St. John, US Virgin Islands from 1992-2021. They are used to evaluate how the abundance of this coral (% cover) has changed over three decades.
Abundance of Millepora species was examined by measuring percent cover at Cabritte Horn in St. John, US Virgin Islands across three decades. Photographic sampling of quadrats (0.5m x 0.5 m) was performed from 1992 to 2021 using cameras mounted on a framer about 80 centimeters above the reef. Color slide film was used from 1992–2000 (and digitized at 4000 dpi), with digital photography implemented in 2001. Photoquadrats were recorded at random positions along the transect, which was 20 meters long from 1992–1999 and 40 meters long from 2000-2021.
The abundance of Millepora sp. chaotically changed from 1992 to 2021 in concert with hurricanes, bleaching, and macroalgal crowding. To access images showing these patterns, see Related Publications section below for Coral Image Downloads and Viewer link (Cabritte Horn images can be found under "Random Sites"). For details on percent cover of macroalgae, see dataset https://www.bco-dmo.org/dataset/875543 (see Related Datasets section below).
Edmunds, P. J. (2022) Abundance and percent cover of Millepora species at Cabritte Horn (St.John, US Virgin Islands) from 1992-2021. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-06-09 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.875524.1 [access date]
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