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Registros recuperados: 38
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A new deep sea coralline sponge from Turks and Caicos Islands: <i>Willardia caicosensis</i> gen. <i>et</i> sp. nov. (Demospongiae: Hadromerida) OMA
Willenz, P.; Pomponi, S.A..
A new coralline sponge, <i>Willardia caicosensis</i>, assigned to the family Timeidae, is described from the deep fore reef off the Turks & Caicos Islands, tropical western Atlantic Ocean, where it is common at depths ranging from 100 to 119 m. Individuals vary up to 15-20 cm in width. The relatively thin aragonitic skeleton is covered with delicate pillars up to + 1 mm. The living tissue is restricted to the spaces between pillars and a thin sheet lying above the calcareous skeleton. Exhalant canals converge upon regularly spaced central oscules on the sponge surface. Siliceous spicules include tylostyles and amphiasters which are secondarily embedded in the aragonitic moiety of the skeleton. In addition, ultrastructural characters of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coral; New genera; Sponges; Porifera [Sponges]; Timeidae.
Ano: 1996 URL: http://www.vliz.be/imisdocs/publications/303635.pdf
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A note on the occurrence of the encrusting foraminifera Homotrema rubrum in reef sediments from two distinctive hydrodynamic settings Anais da ABC (AABC)
MACHADO,ALTAIR J.; MORAES,SIMONE S..
Sediment samples from two different reef environments were analyzed for their foraminiferal content: the Sioba/Rio do Fogo reefs, located in a broad shallow shelf dominated by strong currents (Rio Grande do Norte State), and the Praia do Forte reefs, located in a narrow shelf under the influence of wind-induced waves (Bahia State). The recorded foraminiferal fauna, from forty-six samples, is represented by 113 species, being the encrusting species Homotrema rubrum present in nine samples from the Sioba/Rio do Fogo reefs and in 11 samples from Praia do Forte reefs. Homotrema fragments recovered from Sioba/Rio do Fogo are mostly polished with rounded edges (51.59%) and some have a whitish color, whereas the specimens from Praia do Forte reefs are...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Homotrema rubrum; Reefs; Coralline algae; Coral.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000400012
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Abundance of the excavating sponge Cliona delitrix in relation to sewage discharge at San Andrés Island, SW Caribbean, Colombia OceanDocs
Chaves-Fonnegra, A.; Zea, S.; Gómez, M.L..
It is known that the encrusting and excavating Caribbean sponge Cliona delitrix may increase its abundance near sources of sewage. To ascertain whether its current conspicuousness in leeward reefs of San Andrés Island (SW Caribbean, Colombia) is related to organic pollution from local raw sewage discharges, quantitative data on density and cover of this sponge and other benthic components was obtained from belt and line transects at seven stations along the shallow (5-10 m deep) terrace. Coral mucus was sampled to quantify Escherichia coli bacteria, as an approximate indicator of sewage plume influence on benthic biota. A negative multiplicative regression between amount of E. coli in coral mucus and distance from the main raw sewage outlet demonstrated...
Tipo: Journal Contribution Palavras-chave: Sewage; Coral; Sewage; Http://aims.fao.org/aos/agrovoc/c_7007.
Ano: 2007 URL: http://hdl.handle.net/1834/3517
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Benthic communities and geomorphology of the Tesoro Island Coral Reef, Colombian Caribbean OceanDocs
Sánchez-M., Juan M..
The benthic communities distribution in Tesoro Island (Colombian Caribbean) coral reef was determinad by cartography of reef morphology and functional groups from aerial photographs, theodolite triangulation, and bottom transects over depths ranging from O to 30 m. Tesoro Island is a sand cay reef developed over an emerged reef platform whose basal cone possibly originated by mud diapirism on the continental shelf. The benthic communities are distributed as subzones of the geomorphologic units. The reef crest lies along the breaker zone, formed by Millepora spp. buttresses covered on their tops by Palythoa spp. and seawardly by a turf of Dictyota spp. The rear reef (varying from 0.5-1.5 m ¡n depth) is composed of pavement and grooves with live Porites...
Tipo: Journal Contribution Palavras-chave: Ecology; Benthos; Outer continental shelf; Coral; Algae; Surf; Cartography; Condition factor; Aerial photography; Geomorphology; Coral reefs; Ecology; Benthos; Aerial photography; Coral reefs; Algae; Cartography; Geomorphology; Http://aims.fao.org/aos/agrovoc/c_2467; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_8634; Http://aims.fao.org/aos/agrovoc/c_1880; Http://aims.fao.org/aos/agrovoc/c_258; Http://aims.fao.org/aos/agrovoc/c_1344; Http://aims.fao.org/aos/agrovoc/c_3233.
Ano: 1995 URL: http://hdl.handle.net/1834/3803
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Biodiversidad de corales, gorgonias y esponjas en un sector del golfo de Ana María OceanDocs
González-Díaz, P.; Perera-Pérez, O.; Pérez-García, J. A.; Hernández-Fernández, L..
La investigación se realizó en los meses de octubre de 2011 y marzo de 2012. A partir del análisis de imágenes satelitales se seleccionaron 41 sitios en el sector central del golfo de Ana María, región surcentral de Cuba. En dichos sitios se llevó a cabo el inventario de corales, gorgonias y esponjas. Para los corales, se analizó, además, el estado de salud. El inventario se realizó en los ecosistemas de manglar, pastizales y arrecifes de coral (biotopos de cabezos y fondos areno-rocosos). El número de especies encontradas de corales fue de 41; de gorgonias, 23 y de esponjas, 41. Los corales más abundantes fueron Porites astreoides, Millepora alcicornis, Siderastrea siderea, Siderastrea radians, Agaricia agaricites. La mayor biodiversidad se...
Tipo: Journal Contribution Palavras-chave: Coral; Sponges; Recruitment; Biodiversity.
Ano: 2012 URL: http://hdl.handle.net/1834/4641
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Comparación temporal en la estructura de una comunidad coralina en primeros estados de sucesión, Isla de San Andrés, Colombia OceanDocs
Jaramillo-González, J.; Acosta, A..
Los arrecifes coralinos del mundo han sufrido un declive durante las pasadas tres décadas. Estos cambios se han evaluado en arrecifes en franja; sin embargo, se desconoce si los tensores causantes de dichos cambios afectan la dinámica de una comunidad coralina en los primeros estados de la sucesión antes del desarrollo de un arrecife. Para resolver este interrogante, se monitoreó durante 2004, 2005 y 2006 una comuniddad coralina aislada en San Andrés. Se compararon temporalmente la abundancia, cobertura y mortalidad parcial sufrida por la comjnidad coralina y sus poblaciones de coral dominantes. La comunidad coralina no presentó variación estadística en riqueza, abundancia, cobertura, ni en área de mortalidad parcial. Sin embargo, esta comunidad si varió...
Tipo: Journal Contribution Palavras-chave: Coral; Dynamics; Mortality; Mortality; Http://aims.fao.org/aos/agrovoc/c_4945.
Ano: 2009 URL: http://hdl.handle.net/1834/3605
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Comparison of different protocols for the extraction of microbial DNA from reef corals BJM
Santos,H.F.; Carmo,F.L.; Leite,D.C.A.; Jesus,H.E.; De Carvalho Maalouf,P.; Almeida,C.; Soriano,A.U.; Altomari,D.; Suhett,L.; Vólaro,V.; Valoni,E.; Francisco,M.; Vieira,J.; Rocha,R.; Sardinha,B.L.; Mendes,L.B.; João,R.R.; Lacava,B.; Jesus,R.F.; Sebastian,G.V.; Pessoa,A.; van Elsas,J.D.; Rezende,R.P.; Pires,D.O.; Duarte,G.; Castro,C.B.; Rosado,A.S.; Peixoto,R.S..
This study aimed to test different protocols for the extraction of microbial DNA from the coral Mussismilia harttii. Four different commercial kits were tested, three of them based on methods for DNA extraction from soil (FastDNA SPIN Kit for soil, MP Bio, PowerSoil DNA Isolation Kit, MoBio, and ZR Soil Microbe DNA Kit, Zymo Research) and one kit for DNA extraction from plants (UltraClean Plant DNA Isolation Kit, MoBio). Five polyps of the same colony of M. harttii were macerated and aliquots were submitted to DNA extraction by the different kits. After extraction, the DNA was quantified and PCR-DGGE was used to study the molecular fingerprint of Bacteria and Eukarya. Among the four kits tested, the ZR Soil Microbe DNA Kit was the most efficient with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coral; Microbial diversity; DNA extraction.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000200012
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Composición y densidad de corales juveniles en dos arrecifes profundos de San Andrés Isla, Caribe colombiano OceanDocs
Vidal, A.M.; Villamil, C.M.; Acosta, A..
Coral recruitment determines the maintenance, renovation and future of the coral community. In order to determine the composition, density and importance value of scleractinian juvenile corals (<2 or < 4 cm of diameter; depending of the species) two localities were sampled (Reggae Nest and El Faro) at the deep leeward terrace site of San Andres Island. Also, in 47 quadrants of 1m2 distributed throughout a guide line, frequency of partial mortality, total diseases and depredation signs in juvenile corals were quantified. A total of 397 juveniles of 16 species were egistered. The average density and richness of juveniles were not significantly different between Reggae Nest and El Faro. The average density of both localities was high compared to other...
Tipo: Journal Contribution Palavras-chave: Juveniles; Composition; Density; Coral; Density; Juveniles; Http://aims.fao.org/aos/agrovoc/c_2186; Http://aims.fao.org/aos/agrovoc/c_25393.
Ano: 2005 URL: http://hdl.handle.net/1834/2015
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Coral-based climate records from tropical South Atlantic: 2009/2010 ENSO event in C and O isotopes from Porites corals (Rocas Atoll, Brazil) Anais da ABC (AABC)
Pereira,Natan S.; Sial,Alcídes N.; Kikuchi,Ruy K.P.; Ferreira,Valderez P.; Ullmann,Clemens V.; Frei,Robert; Cunha,Adriana M.C..
ABSTRACT Coral skeletons contain records of past environmental conditions due to their long life span and well calibrated geochemical signatures. C and O isotope records of corals are especially interesting, because they can highlight multidecadal variability of local climate conditions beyond the instrumental record, with high fidelity and sub-annual resolution. Although, in order to get an optimal geochemical signal in coral skeleton, sampling strategies must be followed. Here we report one of the first coral-based isotopic record from the Equatorial South Atlantic from two colonies of Porites astreoides from the Rocas Atoll (offshore Brazil), a new location for climate reconstruction. We present time series of isotopic variation from profiles along the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coral; Climate change; Rocas Atoll; Carbon and oxygen isotopes; South Atlantic Ocean.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000501939
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Corales de los arrecifes cubanos OceanDocs
Duarte-Bello, P. P..
Se describen 37 especies de corales de los arrecifes cubanos, incluye ilustraciones y características distintivas.
Tipo: Book Palavras-chave: Coral; Taxonomy; Coral reefs.
Ano: 1961 URL: http://hdl.handle.net/1834/4601
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Deep-water octocorals (Anthozoa:Cnidaria) collected from the Colombian Caribbean during 'macrofauna explorations' 1998-2002 OceanDocs
Chacón Gómez, Isabel Cristina; Reyes, Javier; Santodomingo, Nadiezhda.
Los octocorales están siendo incluidos en una variedad de estudios a nivel mundial, buscando el análisis de su taxonomía, ecología, biogeografía, genética, geoquímica, entre otros. El estudio que se describe a continuación incluye las muestras recolectadas durante las exploraciones llevadas a cabo por el Instituto de Investigaciones Marinas y Costeras-INVEMAR entre 1998 y 2002 desde aguas someras (20 m) hasta profundidades de 500 m. Se examinaron un total de 280 lotes de museo. Las muestras fueron recolectadas en 32 estaciones distribuidas a lo largo del talud y la plataforma continental del Caribe colombiano. Se reconocieron un total de 44 especies; 21 de ellas identificadas a nivel de especie y 23 a nivel de género; se encuentran distribuidas en 22...
Tipo: Journal Contribution Palavras-chave: Taxonomy; Coral.
Ano: 2012 URL: http://hdl.handle.net/1834/4431
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Distribution of Mysidium integrum (Tattersall) (Crustacea-mysidacea) in Venezuelan coral habitats Naturalis
Zoppi de Roa, Evelyn; Pedro Alonso, G..
ZOPPI DE ROA, EVELYN & PEDRO ALONSO G.: Distribution of Mysidium integrum (Tattersall) (Crustacea: Mysidacea) in Venezuelan coral habitats. Studies Nat. Hist. Caribbean Region 73, Amsterdam 1997: 55-62. This paper reports the occurrence, distribution and some ecological aspects of mysids in six coral habitats along the northern coast of Venezuela. Collections of mysid fauna were made during various months in the years 1980-1983, with simultaneous measurement of environmental conditions. Only Mysidium integrum (TATTERSALL 1951) has been found to be present in the protected zones of various coral species, and between the spines of the sea urchin Diadema antillarum (Philippi). Depth of water and type of association appear to be critical factors affecting...
Tipo: Article / Letter to the editor Palavras-chave: Microhabitat; Sea urchin; Mysidium integrum; Venezuela.; Coral.
Ano: 1997 URL: http://www.repository.naturalis.nl/record/503185
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Ecología química de las esponjas excavadoras Cliona aprica, C. caribbaea, C. delitrix y C. tenuis OceanDocs
Chaves-Fonnegra, A.; López-Victoria, M.; Parra-Velandia, F.; Zea, S..
The Caribbean encrusting and excavating sponges Cliona aprica, C. caribbaea, C. delitrix and C. tenuis (Porifera, Hadromerida, Clionaidae), aggresively undermine and displace live coral tissue. At San Andrés island and Islas del Rosario (Colombian Caribbean), in all 145 observed cases of direct contact of the sponges C. aprica, C. caribbaea and C. tenuis with 17 coral species, corals showed unhealthy signs in their tissue. It was also noticed that the surface of these sponges is colonized by few organisms and that they are rarely preyed upon. To establish the possible use of chemical substances by these sponges in competition for space with corals (allelopathy), as inhibitors of larval settlement (antifouling), and as feeding deterrents against generalist...
Tipo: Journal Contribution Palavras-chave: Sponges; Coral; Ecology; Competitive behaviour; Associated species; Antifouling substances; Ecology; Sponges; Http://aims.fao.org/aos/agrovoc/c_2467; Http://aims.fao.org/aos/agrovoc/c_7321.
Ano: 2005 URL: http://hdl.handle.net/1834/1990
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Enclave coralligène de l'infralittoral de Korbous (nord de la Tunisie) : Aire minimale qualitative du phytobenthos et inventaire scépifique OceanDocs
Romdhane, N.; Ben Mustapha, K.; Romdhane, M. S.; El Abed, A..
دراسة التنوع البيولوجي للكائنات البحرية القاعية للشعب المرجانية « coralligène »للطابق « infralittoral » لقربص سمحت لنا للتعرف على ادنى مساحة نوعية لمثل هذه الدراسات التي تقام لاول مرة في تونس وتخص هذه الشعب.
Tipo: Journal Contribution Palavras-chave: Benthos; Comparative studies; Coral; Phytobenthos; Stock identification; Benthos; Phytobenthos; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_13337.
Ano: 2007 URL: http://hdl.handle.net/1834/4284
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ESTUDIO DE PREFORMULACIÓN PARA EL DESARROLLO DE UN GEL A BASE DE POLÍMEROS CON CAPACIDAD MUCOADHESIVA PARA ENSAYOS DE ALELOPATÍA EN INVERTEBRADOS MARINOS. Acta biol.Colomb.
Andrade,Jenny Patricia; Gómez A,Claudia Marcela; Barbosa B,Helber de J; Castellanos H,Leonardo; Osorno R,Oscar E.
La investigación se desarrolló con el fin de implementar una metodología que permitiera la realización de ensayos de interacciones alelopáticas entre corales y esponjas, minimizando la interacción física provocada por el uso de dispositivos que producen roce y efecto abrasivo sobre los pólipos del coral. Se llevó a cabo un estudio de preformulación utilizando polímeros con características mucoadhesivas sobre mucus que recubre los pólipos de coral, con el fin de obtener un gel, incorporando en las formulaciones un extracto de la esponja Cliona delitrix. Se caracterizaron propiedades como extensibilidad y adherencia, así como la capacidad bioadhesiva de las formulaciones propuestas, considerando su comportamiento reológico. Estas mostraron una buena...
Tipo: Journal article Palavras-chave: Polímeros mucoadhesivos; Mucoadhesión; Preformulación; Gel; Ecología química marina; Alelopatía; Esponja; Coral.
Ano: 2010 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2010000100006
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Evaluación rápida de estructura y salud de las formaciones coralinas de la Isla de Malpelo (Pacífico colombiano) OceanDocs
Garzón-Ferreira, J.; Pinzón-C., J.H..
Malpelo, a small rocky offshore island that supports one of the few coral populations in the eastern Pacific, was visited on June 1-5, 1999 with the purpose of evaluating the status of the coral communities. Using rapid visual methods, the cover of major categories of sessile organisms and the health condition of the coral species were assessed at 8 stations between 11 and 31 m depth. “El Arrecife”, which is the largest coral formation in Malpelo, seems to have suffered a 20% reduction of the live coral cover since 1972 when a mean value of 65% was recorded. This decline, which probably was originated by the 1982-83 strong bleaching event that affected widely the American Pacific, is reflected also by the present levels of recent coral mortality: mean of...
Tipo: Journal Contribution Palavras-chave: Reefs; Coral.
Ano: 1999 URL: http://hdl.handle.net/1834/3255
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Evaluation of large-scale unsupervised classification of New Caledonia reef ecosystems using Landsat 7 ETM+ imagery ArchiMer
Bouvet, G; Ferraris, J; Andrefouet, S.
The capacity of the Landsat 7 Enhanced Thematic Mapper Plus sensor to classify the shallow benthic ecosytems of New Caledonia (South Pacific) is tested using a novel unsupervised classification method. The classes are defined by using a set of multiple spectral decision rules based on the image spectral bands. A general model is applied to the entire Southwest lagoon (5500 km(2)) and tested on three representative sites: a section of the barrier reef, a cay reef flat rich in corals, and a cay reef flat rich in algae and seagrass beds. In the latter one, the classification results are compared with a locally optimized model, with aerial color photographs and extensive ground-truthed observations. Results show that a reconnaissance of the main benthic...
Tipo: Text Palavras-chave: Télédétection; Modèle statistique; Indo-Pacifique; Herbier; Corail; Remote sensing; Statistical modeling; Indo-Pacific; Seagrass; Coral.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/00322/43273/43004.pdf
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Extensive bleaching of the coral Porites lobata at Malpelo, Colombia, during a cold water episode in 2009 OceanDocs
Zapata, Fernando A.; Jaramillo González, Juliana; Navas Camacho, Raúl.
El blanqueamiento coralino es asociado frecuentemente con temperaturas inusualmente cálidas, pero también puede ocurrir durante episodios de enfriamiento del agua. En esta nota registramos un evento de blanqueamiento coralino, especialmente en Porites lobata, después de las temperaturas del mar más bajas registradas para Malpelo en 21 años. En abril de 2009 observamos blanqueamiento en cuatro de las diez especies coralinas registradas en la isla Malpelo. Este evento fue más frecuente (hasta el 72 % de las colonias) y extenso (hasta el 87 % del área de la colonia) en P. lobata. La temperatura superficial del mar obtenida por satélites alcanzó valores tan inusualmente bajos como 23.1 °C en marzo de 2009 con anomalías térmicas hasta de -4.4 °C. Un sensor de...
Tipo: Journal Contribution Palavras-chave: Coral; Environmental conditions; Porites lobata.
Ano: 2011 URL: http://hdl.handle.net/1834/4427
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Formaciones coralinas del área de Santa Marta: estado y patrones de distribución espacial de la comunidad bentónica. OceanDocs
Vega-Sequeda, J.; Rodríguez-Ramírez, A.; Reyes-Nivia, M.C.; Navas-Camacho, R..
Se evaluaron 20 formaciones coralinas del área de Santa Marta en términos de: 1) composición y abundancia de los componentes del sustrato y 2) prevalencia de enfermedades coralinas y blanqueamiento. Para obtener la información se utilizaron bandas de 10 x 1 m y 10 x 2 m respectivamente. Se registró un total de 33 especies de corales duros. Las algas y los corales fueron los componentes de mayor cobertura, sin embargo sus promedios variaron ampliamente en el área de estudio (coral= 4.0 ± 0.9 %-62.0 ± 7.2 %; algas = 30.6 ± 11.0 %-78.3 ± 3.0 %). Las especies de coral con coberturas promedio más altas fueron Colpophyllia natans, Diploria strigosa, Acropora palmata y Montastraea cavernosa (7.5 ± 2.7 %, 6.7 ± 2.1 %, 4.0 ± 2.8 % y 3.8 ± 1.0 %, respectivamente)....
Tipo: Journal Contribution Palavras-chave: Coral.
Ano: 2008 URL: http://hdl.handle.net/1834/3486
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Hallazgo de Isaurus duchassaingi (Coelenterata: Zoantharia) en la Región de Santa Marta OceanDocs
Manjarrés, G..
Isaurus duchassaingi es un zoantidio braquinémido que vive solitario o formando pequeñas colonias. Se encuentra típicamente en zonas rocosas y formaciones coralinas. Una información de su morfología es dada por DUERDEN (1898). El presente artículo da una breve descripción de la especie y algunas notas complementarias de su morfología interna y observaciones ecológicas realizadas en el campo.
Tipo: Journal Contribution Palavras-chave: Coral; Anatomy; Ecology; Ecology; Anatomy; Http://aims.fao.org/aos/agrovoc/c_2467; Http://aims.fao.org/aos/agrovoc/c_49890.
Ano: 1982 URL: http://hdl.handle.net/1834/3959
Registros recuperados: 38
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