|
|
|
|
|
| López-Victoria, M.; Díaz, J.M.; Márquez, J.C.. |
| Tortuguilla is a small island off the southern portion of the Colombian Caribbean continental coast. It is surrounded by a shallow calcareous shelf which is overgrown by recent coral formations whose distribution, composition and zonation are herewith qualitative described for the first time. Observations and data collecting were conducted during two days from a boat by snorkeling at 63 stations and along manta tow transects. Despite the reduced area and the adverse turbidity and sedimentation conditions, at least 16 species of stony corals were registered (4 more to be confirmed), being Millepora spp. and Siderastrea siderea the most common. Five different coral assemblages were recognized. |
| Tipo: Journal Contribution |
Palavras-chave: Coral reefs; Composition; Coral reefs; Http://aims.fao.org/aos/agrovoc/c_1880. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/3240 |
| |
|
|
| Márquez, J.C.; Zea, S.; López-Victoria, M.. |
| Temperaturas del agua de mar por encima del promedio durante 2005 en el Archipiélago de las Islas del Rosario (Caribe Colombiano) causaron un blanqueamiento coralino masivo en aguas someras (hasta 2-3 m de profundidad). Para confirmar resultados previos en los que el estrés inducido por calentamiento del agua en los corales puede acelerar la velocidad a la que esponjas excavadoras incrustantes le ganan espacio a los corales vivos, se contrastaron las tasas de propagación lateral en individuos de la esponja Cliona tenuis previamente marcados, que estaban colonizando los corales Diploria strigosa y Siderastrea siderea a profundidades de 5 - 6 m. Se hicieron comparaciones pareadas del avance de cada individuo de esponja entre dos intervalos de medida... |
| Tipo: Journal Contribution |
Palavras-chave: Sponges; Coral; Competitors; Associated species; Temperature effects; Sponges; Http://aims.fao.org/aos/agrovoc/c_7321. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/1987 |
| |
|
|
| Márquez, J.C.; Díaz, J.M.. |
| Macroalgae proliferation on coral reefs has been a recognized phenomenon for the past two decades and is generally entitled to the human activities on the coasts. Even thought, the role of competition in this process is not clear and it has been assumed that algae are competitively superior to corals, even when it has been demonstrated that this is not always the case. It is probable that the result of coral-macroalgae depends upon the species involved. The goal of this study was to demonstrate that there is a dependence relation between interaction category and interacting species. In order to resolve this, quantifications of interactions per category along 20 m transects were done on three representative localities at the Archipielago de San Bernardo.... |
| Tipo: Journal Contribution |
Palavras-chave: Coral; Interactions; Competition; Benthos; Benthos; Http://aims.fao.org/aos/agrovoc/c_878. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/2013 |
| |
|
|
|
