Sobrevivencia y respuestas fisiológicas de corales expuestos a elevada turbidez en el arrecife Varadero, Caribe colombiano
DOI:
https://doi.org/10.25268/bimc.invemar.2023.52.1.1192Palabras clave:
Varadero, Canal del Dique, Corales simbióticos, Propiedades ópticas, Trasplante recíprocoResumen
El deterioro de las propiedades ópticas del agua, o aumento de turbidez, debido a perturbaciones antropogénicas es un fenómeno
generalizado en zonas costeras. Los efectos sobre el ambiente lumínico submarino y la fisiología de corales simbióticos, que
dependen principalmente de la luz para sobrevivir y mantener elevada calcificación, han sido poco explorados. En este estudio
se describen los efectos de la pluma del Canal del Dique sobre el ambiente lumínico, sobrevivencia y fisiología de corales en el arrecife
Varadero. Se realizó un trasplante recíproco con fragmentos de Orbicella faveolata entre una zona somera en Varadero (3.5 m) y un sitio contrastante con aguas más claras a mayor profundidad (12 m) con intensidad de luz comparable. La columna de agua en Varadero se encontró fuertemente estratificada, favoreciendo el aislamiento del arrecife de la pluma. Corales trasplantados a Varadero mostraron mayor sobrevivencia posiblemente debido a reducción de estrés lumínico y mayor heterotrofía. Su fisiología indicó aclimatación a poca luz y limitado potencial autotrófico, evidenciando un riesgo para la sobrevivencia de corales a mayor profundidad. Los resultados indican que un mayor deterioro de las propiedades ópticas del agua en la bahía de Cartagena por perturbaciones antropogénicas en la cuenca del río Magdalena y en la zona costera pone en riesgo la prevalencia del arrecife Varadero.
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Derechos de autor 2023 Tomás López-Londoño, Kelly Gómez-Campo, Claudia T. Galindo-Martínez, Luis A. González-Guerrero, Sofia Roitman, F. Joseph Pollock, Valeria Pizarro, Mateo López-Victoria, Mónica Medina, Roberto Iglesias-Prieto
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