Please use this identifier to cite or link to this item: http://cicy.repositorioinstitucional.mx/jspui/handle/1003/1675
A coral-algal phase shift in Mesoamerica not driven by changes in herbivorous fish abundance
JESUS ERNESTO ARIAS GONZALEZ
Tak Fung
Robert M. Seymour
JOAQUIN RODRIGO GARZA PEREZ
GILBERTO ACOSTA GONZALEZ
Yves_Marie Bozec
Craig Johnson
Acceso Abierto
Atribución-NoComercial-SinDerivadas
https://doi.org/10.1371/journal.pone.0174855
CORAL
ALGAL
HERBIVOROUS FISH
Coral-algal phase shifts in which coral cover declines to low levels and is replaced by algae have often been documented on coral reefs worldwide. This has motivated coral reef management responses that include restriction and regulation of fishing, e.g. herbivorous fish species. However, there is evidence that eutrophication and sedimentation can be at least as important as a reduction in herbivory in causing phase shifts. These threats arise from coastal development leading to increased nutrient and sediment loads, which stimulate algal growth and negatively impact corals respectively. Here, we first present results of a dynamic process-based model demonstrating that in addition to overharvesting of herbivorous fish, bottom-up processes have the potential to precipitate coral-algal phase shifts on Mesoamerican reefs. We then provide an empirical example that exemplifies this on coral reefs off Mahahual in Mexico, where a shift from coral to algal dominance occurred over 14 years, during which there was little change in herbivore biomass but considerable development of tourist infrastructure. Our results indicate that coastal development can compromise the resilience of coral reefs and that watershed and coastal zone management together with the maintenance of functional levels of fish herbivory are critical for the persistence of coral reefs in Mesoamerica.
2017
Artículo
PLoS One, 12(4), 2017
Inglés
Arias-González, J. E., Fung, T., Seymour, R. M., Garza-Pérez, J. R., Acosta-González, G., Bozec, Y. M., & Johnson, C. R. (2017). A coral-algal phase shift in Mesoamerica not driven by changes in herbivorous fish abundance. PLoS One, 12(4).
ZOOLOGÍA MARINA
Versión publicada
publishedVersion - Versión publicada
Appears in Collections:Artículos de Investigación Arbitrados

Upload archives


File SizeFormat 
id41945_Jesus_Arias.pdf1.73 MBAdobe PDFView/Open