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Registros recuperados: 40
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Les coraux de mer profonde nuisibles aux chalutiers ArchiMer
Joubin, M. L..
L'accroissement considérable du tonnage et de la puissance des navires de pêche employés par les armateurs français leur a permis de manœuvrer les chaluts à des profondeurs de plus en plus grandes qu'ils n'atteignaient jamais, il n’y a pas un bien grand nombre d'années. En opérant dans ces couches profondes ils ont rencontré, à partir de 200 mètres environ, des coraux ramifiés qui sont localisés dans ces eaux plus froides et plus obscures. Ces coraux sont constitués par du calcaire extrêmement dur, à consistance et aspect de porcelaine, à cassure blanche et coupante ; les chaluts déchirent et peuvent même y rester accrochés ; le moindre mal qui leur arrive est de se remplir de branches cassées qui les empêchent de fonctionner. Le chalut de la Tanche en a...
Tipo: Text Palavras-chave: Chart; North Atlantic; Coral; Fishing net; Obstacle; Fisheries.
Ano: 1922 URL: http://archimer.ifremer.fr/doc/1922/publication-2394.pdf
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When forms meet genes: revision of the scleractinian genera Micromussa and Homophyllia (Lobophylliidae) with a description of two new species and one new genus ArchiMer
Arrigoni, Roberto; Benzoni, Francesca; Huang, Danwei; Fukami, Hironobu; Chen, Chaolun Allen; Berumen, Michael L.; Hoogenboom, Mia; Thomson, Damian P.; Hoeksema, Bert W.; Budd, Ann F.; Zayasu, Yuna; Terraneo, Tullia I.; Kitano, Yuko F.; Baird, Andrew H..
The scleractinian family Lobophylliidae is undergoing a major taxonomic revision thanks to the combination of molecular and morphological data. In this study, we investigate the evolutionary relationships and the macro- and micromorphology of six nominal coral species belonging to two of the nine molecular clades of the Lobophylliidae, clades A and B, and of Symphyllia wilsoni, a lobophylliid species analyzed from a molecular point of view for the first time. Sequence data from mitochondrial DNA (COI and the intergenic spacer between COI and l-rRNA), and nuclear DNA (histone H3 and ITS region) are used to generate robust molecular phylogenies and a median-joining haplotype network. Molecular results are strongly in agreement with detailed observations of...
Tipo: Text Palavras-chave: Coral; Evolution; Phylogeny; Systematics; Taxonomy.
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00585/69699/67565.pdf
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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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Climatic Constraints on Growth Rate and Geochemistry (Sr/Ca and U/Ca) of the Coral Siderastrea stellata in the Southwest Equatorial Atlantic (Rocas Atoll, Brazil) ArchiMer
Evangelista, H.; Sifeddine, A.; Correge, T.; Servain, J.; Dassie, E. P.; Logato, R.; Cordeiro, R. C.; Shen, C. -c.; Le Cornec, F.; Nogueira, J.; Segal, B.; Castagna, A.; Turcq, B..
Although relatively rare compared to similar latitudes in the Pacific or Indian Oceans, massive coral colonies are present in the Tropical/Equatorial Southwestern Atlantic Ocean. However, detailed geo-chemical compositions of these corals are still largely unknown. In this work, we present growth rates, Sr/Ca, and U/Ca ratios of the coral colony (Siderastrea stellata) sampled at Rocas Atoll, off the Brazilian coast. These variables are primarily affected by sea surface temperature (SST) at seasonal scale, and by wind stress at interannual scale, these results represent a broad new finding. A lower significance at the interannual time scale between Sr/Ca and U/Ca with respect to SST is attributed to the low SST amplitude closed to Equator. An investigation...
Tipo: Text Palavras-chave: Coral; Siderastrea stellata; Rocas Atoll; ITCZ; Equatorial Atlantic; Wind stress.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00623/73552/73796.pdf
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The Suess effect in Fiji coral delta C-13 and its potential as a tracer of anthropogenlc CO2 uptake ArchiMer
Dassie, Emilie P.; Lemley, Gavin M.; Linsley, Braddock K..
In the context of increasing anthropogenic CO2 emissions, determining the rate of oceanic CO2 uptake is of high interest. Centennial-scale changes in delta C-13 of the surface water dissolved inorganic carbon (DIC) reservoir have been shown to be influenced by the carbon isotopic composition of atmospheric CO2. However, the availability of direct oceanic delta C-13 measurements is limited and methods for reconstructing past delta C-13 variability of the oceanic DIC are needed. Geochemical reconstructions of DIC variability can help in understanding how the ocean has reacted to historical changes in the carbon cycle. This study explores the potential of using temporal variations in delta C-13 measured in five Fijian Porites corals for reconstructing oceanic...
Tipo: Text Palavras-chave: Coral; Carbon isotope; CO2; Suess effect; Dissolved inorganic carbon; Fiji; Water depth; Skeletal extension rate.
Ano: 2013 URL: https://archimer.ifremer.fr/doc/00138/24954/23046.pdf
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Marine animal forests as useful indicators of entanglement by marine litter ArchiMer
Galgani, Francois; Pham, Christopher K.; Claro, Francoise; Consoli, Pierpaolo.
Entanglement of marine fauna is one of the principal impacts of marine litter, with an incidence that can vary strongly according to regions, the type and the quantity of marine litter. On the seafloor, areas dominated by sessile suspension feeders, such as tropical coral reefs or deep-sea coral and sponge aggregations, have been termed “animal forests” and have a strong potential to monitor the temporal and spatial trends of entanglement by marine litter, especially fishing gears. Several characteristics of these organisms represent advantages while avoiding constraints and bias. Biological constraints and logistical aspects, including tools, are discussed to better define a strategy for supporting long-term evaluation of accumulation and entanglement of...
Tipo: Text Palavras-chave: Marine animal forests; Marine litter; Coral; Epibenthic communities; Entanglement; Deep sea.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00452/56368/57988.pdf
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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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Patterns of coral species richness and reef connectivity in Malaysia Naturalis
Waheed, Z..
Tipo: Book (monograph) Palavras-chave: Coral; Reef; Malaysia.
Ano: 2016 URL: http://www.repository.naturalis.nl/record/620270
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When forms meet genes: revision of the scleractinian genera Micromussa and Homophyllia (Lobophylliidae) with a description of two new species and one new genus Naturalis
Arrigoni, R.; Benzoni Danwei Huang, Hironobu Fukami, Chaolun Allen Chen, Michael L. Berumen, Mia Hoogenboom, Damian P. Thomson, Bert W. Hoeksema, Ann F. Budd, Yuna Zayasu, Tullia I. Terraneo, Yuko F. Kitano, Andrew H. Baird, F.; Huang, D.; Fukami, H.; Chen, C.A.; Berumen, M.L.; Hoogenboom, M.; Thomson, D.P.; Hoeksema,, B.W.; Budd, A.F.; Zayasu, Y.; Terraneo, T.I.; Kitano, Y.F.; Baird, A.H..
The scleractinian family Lobophylliidae is undergoing a major taxonomic revision thanks to the combination of molecular and morphological data. In this study, we investigate the evolutionary relationships and the macro- and micromorphology of six nominal coral species belonging to two of the nine molecular clades of the Lobophylliidae, clades A and B, and of Symphyllia wilsoni, a lobophylliid species analyzed from a molecular point of view for the first time. Sequence data from mitochondrial DNA (COI and the intergenic spacer between COI and l-rRNA), and nuclear DNA (histone H3 and ITS region) are used to generate robust molecular phylogenies and a median-joining haplotype network. Molecular results are strongly in agreement with detailed observations of...
Tipo: Article / Letter to the editor Palavras-chave: Coral; Evolution; Phylogeny; Systematics; Taxonomy.
Ano: 2016 URL: http://www.repository.naturalis.nl/record/619236
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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
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La existencia del coral Stephanocyathus nobilis (Moseley, 1881) en la costa de la península Guajira. Una demostración primaria para la costa Atlántica de Colombia OceanDocs
Erhardt, H..
El coral Stephanocyathus nobilis (Moseley) fue pescado en nuestro viaje con el barco de investigaciones pesqueras ("Choco") en la Costa de la Península de la Guajira en octubre de 1971, a una profundidad de 300 metros con una traina camaronera. Este coral es una nueva especie de la costa Atlántica colombiana.
Tipo: Journal Contribution Palavras-chave: Coral; New records.
Ano: 1976 URL: http://hdl.handle.net/1834/3268
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Is competition for space between the encrusting excavating sponge Cliona tenuis and corals influenced by higher-than-normal temperatures? OceanDocs
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
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Isla Arena, una formación coralina saludable en el área de influencia de la pluma del Río Magdalena, plataforma continental del Caribe colombiano. OceanDocs
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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Revisión taxonómica del coral Porites colonensis (Scleractinia: Poritidae) en el Caribe colombiano. OceanDocs
Venera-Pontón, D.E.; Reyes, J.; Díaz-Pulido, G..
Porites colonensis es un coral del mar Caribe cuyas colonias son foliosas, onduladas, en forma de plato y los pólipos de coloración parda o rojiza, con centro blanco o verde fosforescente; sus coralitos presentan pali y su plan septal es bisimétrico, con tres septos fusionados en la zona ventral, un septo dorsal solitario y dos pares de septos laterales a cada lado del eje dorso-ventral. Esta especie es similar a variedades planas de Porites astreoides y Porites branneri, con quienes puede ser confundido. Para Colombia existen tres ejemplares previamente identificados como P. colonensis, colectados en el Golfo de Urabá (ecorregión Darién), Islas del Rosario (ecorregión Archipiélagos Coralinos) y otro sin localidad especificada, además de una observación...
Tipo: Journal Contribution Palavras-chave: Coral; Taxonomy; Taxonomy; Http://aims.fao.org/aos/agrovoc/c_7631.
Ano: 2008 URL: http://hdl.handle.net/1834/3498
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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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Variación de la talla de Eunicea flexuosa y Plexaura kuekenthali (Cnidaria: Octocorallia) en arrecifes coralinos cercanos a fuentes contaminantes en La Habana, Cuba OceanDocs
Rey-Villiers, N.; Alcolado, P. M..
Se determinó la variación de la talla de los octocorales Eunicea flexuosa y Plexaura kuekenthali en arrecifes coralinos con diferente grado de contaminación urbana en la ciudad de La Habana, Cuba. Se midió la altura de las colonias encontradas a lo largo de un transepto de banda (100 x 1 m). La distribución por tallas de ambas especies mostró una tendencia a que las colonias alcancen una mayor frecuencia relativa en los menores intervalos de tallas en los sitios cercanos a las cuencas fluviales con mayor carga contaminante (medido por el número de fuentes contaminantes y carga dispuesta, DBO). La talla media de E. flexuosa fue significativamente menor en los dos sitios cercanos a las cuencas con mayor carga contaminante. Sus mayores tamaños de efecto...
Tipo: Journal Contribution Palavras-chave: Environmental pollution; Size distribution; Coral; Gorgoniidae; Environmental pollution; Size.
Ano: 2012 URL: http://hdl.handle.net/1834/4590
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Interacciones entre corales y macroalgas: dependencia de las especies involucradas OceanDocs
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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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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Uber ein holozänes Korallen- und Mangrovenvorkommen nahe Santa Marta, Kolumbien OceanDocs
Erfa, A.v.; Geister, J..
En el mes de nov./1969 olas larga procedentes de un huracán en el NW del Mar Caribe causaron temporalmente la erosión de la "Punta la Loma", una punta de arena situada en la playa frente al aeropuerto Simón Bolívar de Santa Marta. Como resultado de este suceso afloró el sustrato de esta punta, el cual esta formado de una granodiorita encrustada por corales arrecifales y cubierta por una arena cementada. En la fauna coralina están presentadas solamente especies recientes conocidas de la costa colombiana del Caribe. También se encontraron algunos moluscos y abundantes restos litificados de raíces de mangles.
Tipo: Journal Contribution Palavras-chave: Coral; Geology; Stratigraphy; Sedimentation; Mangroves; Ecosystems; Geology; Stratigraphy; Ecosystems; Sedimentation; Mangroves; Http://aims.fao.org/aos/agrovoc/c_3232; Http://aims.fao.org/aos/agrovoc/c_7440; Http://aims.fao.org/aos/agrovoc/c_2482; Http://aims.fao.org/aos/agrovoc/c_6926; Http://aims.fao.org/aos/agrovoc/c_16190.
Ano: 1976 URL: http://hdl.handle.net/1834/3299
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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
Registros recuperados: 40
Primeira ... 12 ... Última
 

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