Consulta: subjectFacets:"Corals"
Registros recuperados: 13
Data/hora: 01/06/2024 17:44:08

Leaching of flame-retardants from polystyrene debris: Bioaccumulation and potential effects on coral
Provedor de dados: 5
Autores: Aminot, Yann; Lanctôt, Chantal; Bednarz, Vanessa; Robson, William J.; Taylor, Angus; Ferrier-pagès, Christine; Metian, Marc; Tolosa, Imma.
Marine plastic debris can act as a reservoir of chemical additives that can pose a potential threat to sensitive ecosystems such as coral reefs. A survey of foam macrodebris collected on beaches indeed revealed high concentrations of hexabromocyclododecanes (ΣHBCDD) in polystyrene (PS) samples (up to 1940 μg g−1). Results also showed that PS fragments can still leach over 150 ng g−1 d−1 of ΣHBCDD (primarily as the α-isomer) for relatively long durations, and that these additives are readily bioaccumulated and well-retained by corals. Despite significant HBCDD bioaccumulation in coral tissue, short-term exposure to HBCDD or PS leachate had no considerable effect on coral photosynthetic activity, symbiont concentration and chlorophyll content. Exposure to...
Tipo: Text
Palavras-chave: Marine plastic; Polystyrene foam; Leachates; Hexabromocyclododecanes; Corals; Bioconcentration.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00606/71800/70335.pdf

Sequence of events from the onset to the demise of the Last Interglacial: Evaluating strengths and limitations of chronologies used in climatic archives
Provedor de dados: 5
Autores: Govin, A.; Capron, E.; Tzedakis, P. C.; Verheyden, S.; Ghaleb, B.; Hillaire-marcel, C.; St-onge, G.; Stoner, J. S.; Bassinot, F.; Bazin, L.; Blunier, T.; Combourieu-nebout, N.; El Ouahabi, A.; Genty, D.; Gersonde, R.; Jimenez-amat, P.; Landais, A.; Martrat, B.; Masson-delmotte, V.; Parrenin, F.; Seidenkrantz, M. -s.; Veres, D.; Waelbroeck, C.; Zahn, R.
The Last Interglacial (LIG) represents an invaluable case study to investigate the response of components of the Earth system to global warming. However, the scarcity of absolute age constraints in most archives leads to extensive use of various stratigraphic alignments to different reference chronologies. This feature sets limitations to the accuracy of the stratigraphic assignment of the climatic sequence of events across the globe during the LIG. Here, we review the strengths and limitations of the methods that are commonly used to date or develop chronologies in various climatic archives for the time span (similar to 140 -100 ka) encompassing the penultimate deglaciation, the LIG and the glacial inception. Climatic hypotheses underlying record...
Tipo: Text
Palavras-chave: Last Interglacial; Penultimate deglaciation; Last glacial inception; Chronology; Corals; Speleothems; Ice cores; Marine sediments; Peat and lake sediments; Climate dynamics.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00496/60802/64786.pdf

In situ growth of deep-sea octocorals after the Deepwater Horizon oil  spill
Provedor de dados: 5
Autores: Girard, Fanny; Cruz, Rafaelina; Glickman, Orli; Harpster, Tyler; Fisher, Charles R.
Although the role of deep-sea corals in supporting biodiversity is well accepted, their ability to recover from anthropogenic impacts is still poorly understood. An important component of recovery is the capacity of corals to grow back after damage. Here we used data collected as part of an image-based long-term monitoring program that started in the aftermath of the Deepwater Horizon oil spill to develop a non-destructive method to measure in situ growth rates of Paramuricea spp. corals and characterize the impact of the spill on growth. About 200 individual coral colonies were imaged every year between 2011 and 2017 at five sites (three that were impacted by the spill and two that were not). Images were then used to test different methods for measuring...
Tipo: Text
Palavras-chave: Corals; Plexauridae; Growth rates; Non-destructive methods; Imagery; Anthropogenic impact.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00484/59581/62577.pdf

An updated assessment of     Symbiodinium     spp. that associate with common scleractinian corals from Moorea (French Polynesia) reveals high diversity among background symbionts and a novel finding of clade B
Provedor de dados: 5
Autores: Rouze, Heloise; Lecellier, Gael J.; Saulnier, Denis; Planes, Serge; Gueguen, Yannick; Wirshing, Herman H.; Berteaux-lecellier, Veronique.
The adaptative bleaching hypothesis (ABH) states that, depending on the symbiotic flexibility of coral hosts (i.e., the ability of corals to “switch” or “shuffle” their algal symbionts), coral bleaching can lead to a change in the composition of their associated Symbiodinium community and, thus, contribute to the coral’s overall survival. In order to determine the flexibility of corals, molecular tools are required to provide accurate species delineations and to detect low levels of coral-associated Symbiodinium. Here, we used highly sensitive quantitative (real-time) PCR (qPCR) technology to analyse five common coral species from Moorea (French Polynesia), previously screened using only traditional molecular methods, to assess the presence of...
Tipo: Text
Palavras-chave: Corals; French polynesia; Clade B; Symbiodinium; QPCR; Flexibility; Generalist; Faithful clade.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00365/47652/47683.pdf

The coral community structure on the reefs visited during the Snellius II Expedition in Eastern Indonesia
Provedor de dados: 16
Autores: Moll, H.
The line-transect method was applied to gather data on the species composition and sociology of coral reefs on a large number of localities throughout Eastern Indonesia. Multivariate analyses indicated exposure as the major ecological parameter in governing the species composition of these reefs.
Tipo: Article / Letter to the editor
Palavras-chave: Corals; Community structure; Indonesia; Snellius II; 42.72.
Ano: 1986
URL: http://www.repository.naturalis.nl/record/318338

New scleractinian corals (Anthozoa: Scleractinia) from the Spermonde Archipelago, South Sulawesi, Indonesia
Provedor de dados: 16
Autores: Moll, H.; Borel Best, M.
Six new species of Scleractinia are described according to the characteristics of the skeleton. Affinities with congeneric species are discussied.
Tipo: Article / Letter to the editor
Palavras-chave: Anthozoa; Scleractinia; Corals; Taxonomy; Indonesia; Sulawesi; 42.72.
Ano: 1984
URL: http://www.repository.naturalis.nl/record/318035

Cantellius cardenae spec. nov. (Cirripedia: Pyrgomatinae) from Acropora (Isopora) brueggemanni (Brook, 1893) (Anthozoa: Acroporidae), a case of host specificity in a generalist genus
Provedor de dados: 16
Autores: Achituv, Y.; Hoeksema, B.W.
A new species of coral inhabiting barnacle Cantellius cardenae spec. nov. (Crustacea, Cirripedia: Pyrgomatinae) is described. This barnacle was found on the staghorn coral Acropora (Isopora) brueggemanni (Scleractinia: Acroporidae). It is characterized by having transversally elongated scuta and narrow terga with a spur length more than half of the total tergal length. This species belongs to the secundus group of Cantellius, which includes barnacles with transversally elongated scuta, and which are limited to the Acroporidae. The distribution of C. cardenae supports the hypothesis that structurally specialized pyrgomatines occupy a more limited variety of hosts than do morphologicaly generalized ones.
Tipo: Article / Letter to the editor
Palavras-chave: Barnacle; Corals; Association; Cirripedia; Pyrgomatidae; Scleractinia; Acroporidae; 42.79.
Ano: 2003
URL: http://www.repository.naturalis.nl/record/216132

Partial mortality in corals overgrown by the sponge Terpios hoshinota at Tioman Island, Peninsular Malaysia (South China Sea)
Provedor de dados: 16
Autores: Hoeksema, B.W.; Waheed, Z.; Voogd, N.J. de.
Tipo: Article / Letter to the editor
Palavras-chave: Corals; Sponge; Terpios hoshinota; Tioman Island; Peninsular Malaysia; 42.72.
Ano: 2014
URL: http://www.repository.naturalis.nl/record/507001

EXPERIMENTAL APPROACHES FOR THE EVALUATION OF ALLELOPATHIC INTERACTIONS BETWEEN HERMATYPIC CORALS AND MARINE BENTHIC CYANOBACTERIA IN THE COLOMBIAN CARIBBEAN
Provedor de dados: 37
Autores: PUYANA,Mónica; PRATO,Julián Alberto; NIETO,Christian Felipe; RAMOS,Freddy Alejandro; CASTELLANOS,Leonardo; PINZÓN,Paola; ZÁRATE,Juan Camilo.
ABSTRACT Blooms of marine benthic cyanobacteria are recurrent in several locations at the Colombian Caribbean. In these events, cyanobacteria grow over the substrate and benthic organisms although their effect has not been fully assessed. This study evaluated interactions between cyanobacteria and hermatypic corals, in order to identify any deleterious effects that could be related to allelopathic mechanisms. Organic extracts from cyanobacteria collected in San Andres, Old Providence and Rosario islands were tested against embryos of the reef-building coral Orbicella annularis. The indirect effect of cyanobacterial extracts was also assessed by resuspending the extracts in seawater and monitoring polyp retraction and recovery of the coral Madracis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alellopathy; Corals; Cyanobacteria; Interspecific competition.
Ano: 2019
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2019000200243

Corals and calcified hydroids of the Manuel Luiz Marine State Park (State of Maranhão, Northeast Brazil)
Provedor de dados: 49
Autores: Amaral,Fernanda Duarte; Hudson,Marco Mariante; Steiner,Andrea Quirino; Ramos,Carla Alecrim Colaço.
This study aimed to collect information on the diversity of corals and calcified hydroids of the Manuel Luiz Marine State Park (state of Maranhão, Northeast Brazil) to aid in the development of a management plan for the park. A total of 21 cnidarian species were identified, of which 16 were corals and calcified hydroids. The bathymetric and geographic distribution of each of these species was extended. This area has a rich coral fauna in relation to other parts of Brazil and is comparable in diversity to the Abrolhos Islands (Bahia State) - an unexpected result considering the region's proximity to the Amazon River Basin. Most of the specimens of corals and calcified hydroids observed were bleached.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corals; Calcified hydroids; Manuel Luiz Marine State Park; Brazil cnidarian diversity.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000300008

CONFIRMATION OF THE OCCURRENCE OF THE CORAL PAVONA CHIRIQUIENSIS GLYNN, MATÉ AND STEMANN (CNIDARIA: ANTHOZOA: AGARICIIDAE) IN THE COLOMBIAN PACIFIC
Provedor de dados: 50
Autores: Zapata,Fernando A; Rodríguez-Ramírez,Alberto; Rodríguez-Moreno,Melina; Muñoz,Carlos G; López-Victoria,Mateo.
El género Pavona comprende 18 especies de las cuales Pavona chiriquiensis ha sido recientemente descrita y registrada en varias localidades del Pacífico oriental tropical. A partir de observaciones y colecciones realizadas en arrecifes de las islas Gorgona y Malpelo entre 1999 y 2005 se confirma su presencia en Colombia. El tardío registro de P. chiriquiensis en estas islas pudo ser debido a su similitud y confusión con P. varians, o a su reciente colonización del Pacífico colombiano.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corals; Coral reefs; Tropical Eastern Pacific.
Ano: 2007
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612007000100014

ABUNDANCE OF THE EXCAVATING SPONGE CLIONA DELITRIX IN RELATION TO SEWAGE DISCHARGE AT SAN ANDRÉS ISLAND, SW CARIBBEAN, COLOMBIA
Provedor de dados: 50
Autores: Chaves-Fonnegra,Andia; Zea,Sven; Gómez,Martha 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: Info:eu-repo/semantics/article
Palavras-chave: Sewage; Excavating sponges; Corals; Caribbean; Colombia.
Ano: 2007
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612007000100004

Fauna living in colonies of Mussismilia hispida (Verrill) (Cnidaria: Scleractinia) in four South-eastern Brazil islands
Provedor de dados: 52
Autores: Nogueira,João Miguel de Matos.
Colonies of Mussismilia hispida were collected in four south-eastern Brazil islands and fixed in formalin. Volume, living and basal areas of each coral head were measured. Animals found over, under and inside the corals were sorted, resulting in 9657 specimens belonging to more than 130 taxa. The underside of the colonies was occupied by bivalves and colonial forms of sponges, bryozoans and ascidians. On the living surface, barnacles and cryptochiridean crabs were detected. The endolithic animals included polychaetes, bivalves and sipunculid worms. Most of the animals collected were vagile microcrustaceans. In general, the corals in this ecosystem: (1) act as a nursery place for the community; (2) provide protection for many species also found in other...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Associated fauna; Community ecology; Corals; Mussismilia hispida; South-eastern Brazil.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000300014