Did the community structure of a coral reef patch affected by a ship grounding recover after 15 years? Merging historical and recent data sets

Periodo de realización: 2017/06/01 al 2017/01/01

Tipo: Artículo científico

Lugar(es) de estudio: Zona Hotelera, 77500 Cancún, Q.R., México
Resumen: "Shifts in dominance from coral to other benthic groups in coral reefs have raised concerns about the persistence of coral reefs and their ability to provide ecosystem services. Acute disturbances such as ship groundings offer the opportunity to examine the dynamics of successional processes in coral reefs, since understanding them is a prerequisite for their proper management. In this study, we investigated whether a ship grounding area in a reef located in a marine protected area in Cancún, Mexico, showed signs of recovery 15 years after the incident. We evaluated the reef's composition and structure by taking samples at three different scales (reef scale, 1 m², and 0.01 m²). In these samples, we analysed coral density and recruitment, the abundance of five functional algal groups, and the abundance of the grazer sea urchin Diadema antillarum. If recovery had already occurred, we expected the impacted sector to have a community composition and structure similar to that of a contiguous, non-impacted sector. Using historical information, we found indications of a long-term phase shift, with Porites astreoides being the dominant coral species some time ago and at all scales of analysis"

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