Consulta: creatorFacets:"Díaz, J.M."
Registros recuperados: 9
Data/hora: 01/06/2024 17:26:48

Esponjas y otros microhábitats de ofiuros (Ophiuroidea: Echinodermata) en ambientes arrecifales del Archipiélago de San Bernardo (Caribe colombiano)
Provedor de dados: 20
Autores: 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

Reef associated molluscan fauna of the Santa Marta Area, Caribbean Coast of Colombia
Provedor de dados: 20
Autores: Díaz, J.M.; Escobar, L.A.; Velásquez, L.E.
Se registra un total de 263 especies de moluscos (201 encontradas vivas) colectadas entre 1982 y 1989 en siete localidades arrecifales de la región de Santa-Marta, Colombia. Los moluscos fueron ordenados de acuerdo a las zonas de arrecife en que fueron encontradas, a sus hábitos alimentarios y a su modo de vida. El dendrograma resultante del análisis de similaridad faunística entre las zonas muestra que existen tres tipos básicos de comunidades en el arrecife (asentadas respectivamente en zonas someras, zona de declive arrecifal y zona con coral muerto y arena), más una comunidad pobre en especies y restringida a la zona dominada por el coral Agaricia tenuifo/ia. Existen algunas diferencias entre las zonas arrecifales en cuanto a la distribución porcentual...
Tipo: Journal Contribution
Palavras-chave: Malacology; Habitat; Geographical distribution; Interspecific relationships; Feeding behaviour; Population structure; Abundance; Malacology; Geographical distribution; Feeding behaviour; Population structure; Http://aims.fao.org/aos/agrovoc/c_4528; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_6115.
Ano: 1990
URL: http://hdl.handle.net/1834/3890

Isla Arena, una formación coralina saludable en el área de influencia de la pluma del Río Magdalena, plataforma continental del Caribe colombiano.
Provedor de dados: 20
Autores: 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

Armina juliana (Gastropoda: Nudibranchia: Arminidae), a new species from the Southern Caribbean
Provedor de dados: 20
Autores: Ardila, N.E.; Díaz, J.M.
A new species of the genus Armina, collected off the northern Caribbean coast of Colombia at depths of 310 and 460 m in soft bottoms is described. The number of notal ridges, the position of the genital papilla, the size and the shape of radular teeth and the features of the masticatory process are the main differences to other congeneric species occurring in Atlantic waters. Armina juliana n. sp. is the first record for the family Arminidae in the Colombian Caribbean.
Tipo: Journal Contribution
Palavras-chave: New species; New species; Http://aims.fao.org/aos/agrovoc/c_15733.
Ano: 2002
URL: http://hdl.handle.net/1834/3120

Interacciones entre corales y macroalgas: dependencia de las especies involucradas
Provedor de dados: 20
Autores: 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

Las formaciones coralinas de Isla Tortuguilla (Caribe colombiano)
Provedor de dados: 20
Autores: 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

Cefalópodos (Mollusca: Cephalopoda) del talud superior del Caribe colombiano
Provedor de dados: 20
Autores: García C., A.; Ardila, N.E.; Díaz, J.M.
Seven cephalopod species were identified from material collected during four exploratory cruises carried out in 1998 and 1999 along the upper shelf slope of the Colombian Caribbean at depths between 200 and 500 m. Semirossia tenera, S. equalis, Heteroteuthis dispar, Opisthoteuthis agassizii, Octopus burryi and Benthoctopus oregonae are first recorded for the area. S. tenera was the most common species, representing 75% of the total abundance.
Tipo: Journal Contribution
Palavras-chave: Distribution; Distribution; Http://aims.fao.org/aos/agrovoc/c_35773.
Ano: 2002
URL: http://hdl.handle.net/1834/3193

Primer registro de un pulpo de la familia Tremoctopodidae (Cephalopoda: Octopoda) para el Caribe colombiano
Provedor de dados: 20
Autores: 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

Moluscos y su taxocenosis en los fondos someros del sector sur de la plataforma continental del Caribe colombiano
Provedor de dados: 20
Autores: García-Valencia, C.; Díaz, J.M.
During a baseline survey of the shallow bottoms (10-50 m) of the southern continental shelf  of the Colombian Caribbean, a total of 35 molluscan species belonging to 24 families was collected. Three main molluscan bottom assemblages were recognized according to species composition and abundance, whose distribution seems likely to be controlled rather by depth than by sediment features. Twenty four of the species were not recorded before from this area of the Colombian Caribbean.
Tipo: Journal Contribution
Palavras-chave: Marine molluscs; Continental shelves; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 2000
URL: http://hdl.handle.net/1834/3294