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  • PANGAEA  (114)
  • Public Library of Science  (2)
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  • 1
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    Ocean Acidification Accelerates Reef Bioerosion (2012)
    Public Library of Science
    In:  PLoS ONE, 7 (9). e45124.
    Details
    Publication Date: 2017-06-22
    Description: In the recent discussion how biotic systems may react to ocean acidification caused by the rapid rise in carbon dioxide partial pressure (pCO2) in the marine realm, substantial research is devoted to calcifiers such as stony corals. The antagonistic process – biologically induced carbonate dissolution via bioerosion – has largely been neglected. Unlike skeletal growth, we expect bioerosion by chemical means to be facilitated in a high-CO2 world. This study focuses on one of the most detrimental bioeroders, the sponge Cliona orientalis, which attacks and kills live corals on Australia’s Great Barrier Reef. Experimental exposure to lowered and elevated levels of pCO2 confirms a significant enforcement of the sponges’ bioerosion capacity with increasing pCO2 under more acidic conditions. Considering the substantial contribution of sponges to carbonate bioerosion, this finding implies that tropical reef ecosystems are facing the combined effects of weakened coral calcification and accelerated bioerosion, resulting in critical pressure on the dynamic balance between biogenic carbonate build-up and degradation.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1371/journal.pone.0045124
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 2
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    Desmophyllum dianthus (Esper, 1794) in the scleractinian phylogeny and its intraspecific diversity (2013)
    Public Library of Science
    Details
    Publication Date: 2022-05-25
    Description: © The Author(s), 2012. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in PLoS One 7 (2012): e50215, doi:10.1371/journal.pone.0050215.
    Description: The cosmopolitan solitary deep-water scleractinian coral Desmophyllum dianthus (Esper, 1794) was selected as a representative model species of the polyphyletic Caryophylliidae family to (1) examine phylogenetic relationships with respect to the principal Scleractinia taxa, (2) check population structure, (3) test the widespread connectivity hypothesis and (4) assess the utility of different nuclear and mitochondrial markers currently in use. To carry out these goals, DNA sequence data from nuclear (ITS and 28S) and mitochondrial (16S and COI) markers were analyzed for several coral species and for Mediterranean populations of D. dianthus. Three phylogenetic methodologies (ML, MP and BI), based on data from the four molecular markers, all supported D. dianthus as clearly belonging to the “robust” clade, in which the species Lophelia pertusa and D. dianthus not only grouped together, but also shared haplotypes for some DNA markers. Molecular results also showed shared haplotypes among D. dianthus populations distributed in regions separated by several thousands of kilometers and by clear geographic barriers. These results could reflect limited molecular and morphological taxonomic resolution rather than real widespread connectivity. Additional studies are needed in order to find molecular markers and morphological features able to disentangle the complex phylogenetic relationship in the Order Scleractinia and to differentiate isolated populations, thus avoiding the homoplasy found in some morphological characters that are still considered in the literature.
    Description: This study was funded by CTM2009-00496 and CGL2011-23306 projects of the “Ministerio de Ciencia e Innovación” (Spain). Research at sea was partly supported by the European Commission F. P.VI Project HERMES Contract No. GOCE-CT-2005-511234-1) and the EU F.P. VII Project HERMIONE(contract number no. 226354).
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
    Format: application/vnd.ms-excel
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    PAPER (OA)
  • 3
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    Lipids and nitrogen isotopes of two deep-water corals from the North-East Atlantic: initial results and implications for their nutrition (2005)
    PANGAEA
    In:  EPIC3In: Freiwald, A & Roberts, JM (eds.), 2005, Cold-water Corals and Ecosystems, Springer-Verlag, Berlin, Heidelberg, Bremerhaven, PANGAEA, pp. 715-729
    Details
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
    Format: application/pdf
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    PAPER (OA)
  • 4
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    Morphological measurements and video annotation of the new octocoral Swiftia phaeton sp. nov. during the cruise MSM 16-3 Phaeton in 2010 off the Mauritanian Slope (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-13
    Description: Swiftia phaeton, a new species, is described for Mauritania where it is endemic at the upper bathyal. This azooxanthellate octocoral is distinctive from congeneric species in the NE Atlantic and Mediterranean Sea by the dark red coloration of the colonies and polyps, the presence of a layer of rod sclerites on top of the calyces and different sizes of polyps and sclerites. Coral gardens dominated by a species of the genus Swiftia Duchassaing & Michelotti, 1864 were filmed for the first time it the southern NE Atlantic Ocean. The extensive Swiftia phaeton sp. nov. dominated habitats were recorded during the Phaeton expedition onboard Maria S. Merian in 2010 at the Mauritanian Slope between 20°24N and 17°54N in 470 - 640 m depth, co-occurring with the framework-forming scleractinians Lophelia pertusa (Linnaeus, 1758) and Madrepora oculata (Linnaeus, 1758). ROV video annotation based on size and density distribution of Swiftia enabled the characterization of the new biotope.
    Keywords: ATLAS; A Trans-Atlantic assessment and deep-water ecosystem-based spatial management plan for Europe; Coral garden; Mauritania; NW Africa; Octocorallia; Plexauridae; Taxonomy.; vulnerable marine ecosystem (VME).
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 5
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    Stable oxygen and carbon isotopes of Cibicides lobatulus from the Lardos SW hill section, Rhodes, Greece (2022)
    PANGAEA
    Details
    Publication Date: 2023-03-13
    Keywords: Benthic and planktonic foraminifera; Cibicides lobatulus, δ13C; Cibicides lobatulus, δ13C standard deviation; Cibicides lobatulus, δ18O; Cibicides lobatulus, δ18O standard deviation; DATE/TIME; Finnigan MAT 252 gas isotope ratio mass spectrometer with Kiel III automated carbonate preparation device; Greece; Identification; Island of Rhodes, Greece; OUTCROP; Outcrop sample; Rhodes; Rhodes_Lardos_SW_Hill; Sample comment; Sample height; stable oxygen and carbon isotopes; Standard; Taxon/taxa, unique identification; Taxon/taxa, unique identification (URI)
    Type: Dataset
    Format: text/tab-separated-values, 323 data points
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    DATA PANGAEA
  • 6
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    Stable oxygen and carbon isotopes of Cibicidoides pachyderma from the Lardos SW hill section, Rhodes, Greece (2022)
    PANGAEA
    Details
    Publication Date: 2023-03-13
    Keywords: Benthic and planktonic foraminifera; Cibicidoides pachyderma, δ13C; Cibicidoides pachyderma, δ13C standard deviation; Cibicidoides pachyderma, δ18O; Cibicidoides pachyderma, δ18O standard deviation; DATE/TIME; Finnigan MAT 252 gas isotope ratio mass spectrometer with Kiel III automated carbonate preparation device; Greece; Identification; Island of Rhodes, Greece; OUTCROP; Outcrop sample; Rhodes; Rhodes_Lardos_SW_Hill; Sample comment; Sample height; stable oxygen and carbon isotopes; Standard; Taxon/taxa, unique identification; Taxon/taxa, unique identification (URI)
    Type: Dataset
    Format: text/tab-separated-values, 775 data points
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    DATA PANGAEA
  • 7
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    Stable oxygen and carbon isotopes of Globigerinoides ruber from the Lardos SW hill section, Rhodes, Greece (2022)
    PANGAEA
    Details
    Publication Date: 2023-03-13
    Keywords: Benthic and planktonic foraminifera; DATE/TIME; Finnigan MAT 252 gas isotope ratio mass spectrometer with Kiel III automated carbonate preparation device; Globigerinoides ruber white, δ13C; Globigerinoides ruber white, δ13C standard deviation; Globigerinoides ruber white, δ18O; Globigerinoides ruber white, δ18O standard deviation; Greece; Identification; Island of Rhodes, Greece; OUTCROP; Outcrop sample; Rhodes; Rhodes_Lardos_SW_Hill; Sample height; stable oxygen and carbon isotopes; Standard; Taxon/taxa, unique identification; Taxon/taxa, unique identification (URI)
    Type: Dataset
    Format: text/tab-separated-values, 700 data points
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    DATA PANGAEA
  • 8
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    Stable oxygen and carbon isotopes of Globigerinoides conglobatus from the Lardos SW hill section, Rhodes, Greece (2022)
    PANGAEA
    Details
    Publication Date: 2023-03-13
    Keywords: Benthic and planktonic foraminifera; DATE/TIME; Finnigan MAT 252 gas isotope ratio mass spectrometer with Kiel III automated carbonate preparation device; Globigerinoides conglobatus, δ13C; Globigerinoides conglobatus, δ13C, standard deviation; Globigerinoides conglobatus, δ18O; Globigerinoides conglobatus, δ18O, standard deviation; Greece; Identification; Island of Rhodes, Greece; OUTCROP; Outcrop sample; Rhodes; Rhodes_Lardos_SW_Hill; Sample height; stable oxygen and carbon isotopes; Standard; Taxon/taxa, unique identification; Taxon/taxa, unique identification (URI)
    Type: Dataset
    Format: text/tab-separated-values, 364 data points
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    DATA PANGAEA
  • 9
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    Stable oxygen and carbon isotopes of planktic and benthic foraminifera from the Lardos SW hill section, Rhodes, Greece (2022)
    PANGAEA
    Details
    Publication Date: 2023-03-13
    Description: Stable oxygen and carbon isotopes were measured on (i) the planktic foraminifera species Globigerinoides ruber (white) and alternatively, in samples in which G. ruber was lacking, on Globigerinoides conglobatus; and (ii) the benthic foraminifera species Cibicidoides pachyderma and alternatively, in samples in which C. pachyderma was lacking, on Cibicides lobatulus. 10–15 planktic and 4-6 benthic specimens of the fraction 〉250 μm were selected. Additionally, attention was paid to select specimens of similar size to minimise influences of metabolic effects and changing preferential habitats during ontogeny. For cleaning and removal of sediment, the selected foraminifera were cracked between two glass plates, transferred to a sample cup, covered with ethanol and immerged into an ultrasonic bath for 5–10 s. The sediment brought into suspension was decanted. The procedure was repeated until the ethanol remained clear after the ultrasonic bath. The cleaned foraminifera were reacted with 100% phosphoric acidat 75 °C using a Kiel III online carbonate preparation line connected to a ThermoFinnigan 252 mass spectrometer (Geochemical Laboratory of the GeoZentrum Nordbayern,Germany). Isotopic data are expressed in per mil relative to V-PDB by assigning a δ18O-value of -2.20 ‰ to NBS19, using the standard δ-notation. The reproducibility was checked by replicate analysis of laboratory standards and was found to be better than ±0.05 for δ18O and δ13C (1σ).
    Keywords: Benthic and planktonic foraminifera; Greece; Rhodes; stable oxygen and carbon isotopes
    Type: Dataset
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 10
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    Mediterranean cold-water coral measurements (2016)
    PANGAEA
    In:  Supplement to: Titschack, Jürgen; Fink, Hiske G; Baum, Daniel; Wienberg, Claudia; Hebbeln, Dierk; Freiwald, André (2016): Mediterranean cold-water corals - an important regional carbonate factory? The Depositional Record, 2(1), 74-96, https://doi.org/10.1002/dep2.14
    Details
    Publication Date: 2023-03-03
    Description: This study presents aggradation rates supplemented for the first time by carbonate accumulation rates from Mediterranean cold-water coral sites considering three different regional and geomorphological settings: (i) a cold-water coral ridge (eastern Melilla coral province, Alboran Sea), (ii) a cold-water coral rubble talus deposit at the base of a submarine cliff (Urania Bank, Strait of Sicily) and (iii) a cold-water coral deposit rooted on a predefined topographic high overgrown by cold-water corals (Santa Maria di Leuca coral province, Ionian Sea). The mean aggradation rates of the respective cold-water coral deposits vary between 10 and 530 cm kyr-1 and the mean carbonate accumulation rates range between 8 and 396 g cm-2 kyr-1 with a maximum of 503 g cm-2 kyr-1 reached in the eastern Melilla coral province. Compared to other deep-water depositional environments the Mediterranean cold-water coral sites reveal significantly higher carbonate accumulation rates that were even in the range of the highest productive shallow-water Mediterranean carbonate factories (e.g. Cladocora caespitosa coral reefs). Focusing exclusively on cold-water coral occurrences, the carbonate accumulation rates of the Mediterranean cold-water coral sites are in the lower range of those obtained for the prolific Norwegian coral occurrences, but exhibit much higher rates than the cold-water coral mounds off Ireland. This study clearly indicates that cold-water corals have the potential to act as important carbonate factories and regional carbonate sinks within the Mediterranean Sea. Moreover, the data highlight the potential of cold-water corals to store carbonate with rates in the range of tropical shallow-water reefs. In order to evaluate the contribution of the cold-water coral carbonate factory to the regional or global carbonate/carbon cycle, an improved understanding of the temporal and spatial variability in aggradation and carbonate accumulation rates and areal estimates of the respective regions is needed.
    Keywords: Center for Marine Environmental Sciences; GeoB; Geosciences, University of Bremen; MARUM
    Type: Dataset
    Format: application/zip, 22 datasets
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    DATA PANGAEA
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