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| Bejarano-Chavarro, S.; Zea, S.; Díaz, J.M.. |
| Ophiuroids are conspicuous dwellers of exposed and cryptic microhabitats available in coral reefs. This investigation pretended to discern ophiuroid community composition at microhabitats available in sponges and other reef components of different character (biotic v s. abiotic) or position over the substrate (elevated v s. non- elevated), at shallow reefs within the Montastraea spp. zone at San Bernardo Archipelago (Colombian Caribbean). Evaluating the abundance of organisms related to availability of different microhabitats, schemes of exclusive or preferential occupation of a particular elevated component were determined. These schemes, are discussed as initial cues that suggest the existence of benefic ecological relations. Samplings were performed at... |
| Tipo: Journal Contribution |
Palavras-chave: Microhabitats; Epibiosis; Sponges; Sponges; Http://aims.fao.org/aos/agrovoc/c_7321. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/3052 |
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| 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 |
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| Pinzón, J.H.; Perdomo, A.M.; Díaz, J.M.. |
| Se describe la morfología, composición y estructura de la formación coralina desarrollada alrededor de Isla Arena, un pequeño islote localizado en la zona central de la plataforma continental del Caribe colombiano. A partir de fotografías aéreas del área y observaciones en el campo, se elaboraron mapas batimétricos, de las unidades de fondo, de acuerdo al sustrato y a la cobertura de la biota sésil dominante, del grado de exposición al oleaje y de sus patrones de dispersión y refracción. Mediante el empleo de una cámara de video submarina, se filmaron transectos a lo largo de una cadena de 10 m, que fueron analizados usando el método de punto intersectado para la caracterización de la estructura de la comunidad de organismos sésiles. Un total de 33... |
| Tipo: Journal Contribution |
Palavras-chave: Coral; Sedimentation; Sedimentation; Http://aims.fao.org/aos/agrovoc/c_6926. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/3275 |
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| 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 |
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| Díaz, J.M.; Gracia-C., A.. |
| The Tremoctopodidae is a small group of epipelagig to mesopelagic octopuses with a single genus (Tremoctopus) and three recognized species. Of them, T. violaceus is known to occur in Atlantic waters between 40°N and 35°S, including the Mediterranean and the Gulf of Mexico, with only two records for the Caribbean (Cayman Islands and eastern Venezuela). An adult female of this species was recently colleected at Islas del Rossario, off Cartagena, constituting the first record of this species for Colombia. |
| Tipo: Journal Contribution |
Palavras-chave: Cephalopod fisheries. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/3079 |
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