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  • Springer  (19)
  • PANGAEA  (13)
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  • 1
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    Unknown
    PANGAEA
    In:  Supplement to: Klicpera, André; Taylor, Paul D; Westphal, Hildegard (2013): Bryoliths constructed by bryozoans in symbiotic associations with hermit crabs in a tropical heterozoan carbonate system, Golfe d'Arguin, Mauritania. Marine Biodiversity, 43(4), 429-444, https://doi.org/10.1007/s12526-013-0173-4
    Publication Date: 2023-05-12
    Description: The Golfe d'Arguin offshore of northern Mauritania hosts a rare modern analogue for heterozoan carbonate production in a tropical marine setting. Dominated by ocean upwelling and with additional fertilisation by iron-rich aeolian dust, this naturally eutrophic marine environment lacks typical photozoan communities. A highly productive, tropical cosmopolitan biota dominated by molluscs and suspension-feeders such as bryozoans and balanids characterises the carbonate-rich surface sediments. Overall biodiversity is relatively low and the species present are tolerant against the eutrophic and low-light conditions, the strong hydrodynamic regime governed by ocean upwelling, and the unstable, soft-bottom seafloor with few hard substrata. Here, we describe an ectosymbiosis between the hermit crab Pseudopagurus granulimanus (Miers, 1881) and monospecific assemblages of the encrusting cheilostome bryozoan Acanthodesia commensale (Kirkpatrick and Metzelaar, 1922) that cohabits vacant gastropod shells. Nucleating on an empty gastropod shell, the bryozoan colonies form multilamellar skeletal crusts that produce spherical encrustations and extend the living chamber of the hermit crab through helicospiral tubular growth. This non-obligate mutualistic symbiosis illustrates the adaptive capabilities and benefits from a close partnership in a complex marine environment, driven by trophic conditions, high water energies and instable substratum. Sectioned bryoliths show that between 49 and 97 % of the solid volume of the specimens consists of bryozoan skeleton.
    Keywords: Center for Marine Environmental Sciences; MARUM
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 2
    Publication Date: 2023-12-11
    Keywords: 1; 10; 11; 12; 13; 14; 15; 16; 17; 2; 3; 4; 5; 6; 7; 8; 9; Age, comment; Avon Park Formation, USA; carbonate hard grounds; CHC-01; CHC-02; CHC-03; CHC-04; CHC-05; CHC-06; CHC-07; CHC-08; CHC-09; CHC-10; CHC-11; CHC-12; CHC-13; CHC-14; CHC-15; CHC-16; CHC-17; Enewetak Atoll, Marshalls Islands; Environment; Eskett Limestones, England; Event label; Furongian, Banff National Park; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; Kanosh Formation, Utah; Latemar Formation; LATITUDE; Location; LONGITUDE; Marjuman, Banff National Park; Meerssen Member, the Netherlands; Mg/Ca ratios; Mussafah Channel Hardground, UAE; Period; Qishn Formation, Oman; Reference/source; Sample code/label; Stage; strontium isotopes; Suwannee Limestone, USA; Upper Greensands, Devon, UK
    Type: Dataset
    Format: text/tab-separated-values, 119 data points
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  • 3
    Publication Date: 2023-12-11
    Description: Trace metal and isotopic ratios, including some rare earth elements, Mg/Ca, manganese and strontium concentrations, δ¹⁸O, δ¹³C, and ⁸⁷Sr/⁸⁶Sr, were analyzed in the carbonate cements from 17 Phanerozoic carbonate hardgrounds. The sensitivity of the geochemical signal to alteration depends on the geochemical analysis in question and the environmental water-rock ratio. Of these samples, only our modern sample has measurements consistent with primary precipitation from seawater; all other samples precipitated from chemically evolved seawater or were influenced by meteoric water, even if only minimally changed. The more recent samples from the Cenozoic had seawater ⁸⁷Sr/⁸⁶Sr. The Mesozoic samples, in contrast, did not preserve seawater ⁸⁷Sr/⁸⁶Sr, even though the Mg/Ca, δ¹⁸O, and δ¹³C values were consistent with precipitation from seawater. Finally, the Paleozoic samples preserved expected seawater ⁸⁷Sr/⁸⁶Sr, though REE and δ¹⁸O suggest primary precipitation was from evolved seawater. Additionally, we place our results in the context of open vs. closed system precipitation using transects of the Mg/Ca ratios across individual cements. Overall, we stress that one geochemical measurement provides only a partial record of fluid composition, but multiple measurements allow a potential understanding of the seawater geochemical signal.
    Keywords: carbonate hard grounds; Mg/Ca ratios; strontium isotopes
    Type: Dataset
    Format: application/zip, 7 datasets
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  • 4
    Publication Date: 2023-12-11
    Keywords: 1; 10; 11; 12; 16; 2; 3; 4; 5; 9; Age, comment; Avon Park Formation, USA; carbonate hard grounds; CHC-01; CHC-02; CHC-03; CHC-04; CHC-05; CHC-09; CHC-10; CHC-11; CHC-12; CHC-16; Enewetak Atoll, Marshalls Islands; Event label; Furongian, Banff National Park; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; LA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometer; Latemar Formation; Latitude of event; Longitude of event; Mussafah Channel Hardground, UAE; Sample ID; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard deviation; strontium isotopes; Suwannee Limestone, USA
    Type: Dataset
    Format: text/tab-separated-values, 496 data points
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  • 5
    Publication Date: 2023-12-11
    Keywords: 1; 10; 11; 13; 14; 15; 16; 17; 2; 3; 4; 5; 6; 7; 8; 9; Age, comment; Avon Park Formation, USA; carbonate hard grounds; CHC-01; CHC-02; CHC-03; CHC-04; CHC-05; CHC-06; CHC-07; CHC-08; CHC-09; CHC-10; CHC-11; CHC-13; CHC-14; CHC-15; CHC-16; CHC-17; Electron microprobe (EMP); Enewetak Atoll, Marshalls Islands; Eskett Limestones, England; Event label; Furongian, Banff National Park; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; Kanosh Formation, Utah; Latemar Formation; Latitude of event; Longitude of event; Magnesium; Magnesium/Calcium ratio; Manganese/Strontium ratio; Marjuman, Banff National Park; Meerssen Member, the Netherlands; Mg/Ca ratios; Mussafah Channel Hardground, UAE; Qishn Formation, Oman; Sample ID; Strontium; Suwannee Limestone, USA; Upper Greensands, Devon, UK
    Type: Dataset
    Format: text/tab-separated-values, 1602 data points
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  • 6
    Publication Date: 2023-12-11
    Keywords: 1; 11; 12; 17; 2; 3; 4; 5; 9; Age, comment; Aluminium; Aluminium, standard error; Avon Park Formation, USA; Barium; Barium, standard error; Calcium; Calcium, standard error; carbonate hard grounds; Cerium; Cerium, standard error; CHC-01; CHC-02; CHC-03; CHC-04; CHC-05; CHC-09; CHC-11; CHC-12; CHC-17; Copper; Copper, standard error; Enewetak Atoll, Marshalls Islands; Event label; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; Iron; Iron, standard error; LA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometer; Lanthanum; Lanthanum, standard error; Latemar Formation; Latitude of event; Magnesium; Magnesium, standard error; Manganese; Manganese, standard error; Marjuman, Banff National Park; Mussafah Channel Hardground, UAE; Neodymium; Neodymium, standard error; Phosphorus; Phosphorus, standard error; Praseodymium; Praseodymium, standard error; Sample ID; Strontium; Strontium, standard error; Sulfur; Sulfur, standard error; Suwannee Limestone, USA; Thorium; Thorium, standard error; Titanium; Titanium, standard error; Uranium; Uranium, standard error; Yttrium; Yttrium, standard error; Zinc; Zinc, standard error
    Type: Dataset
    Format: text/tab-separated-values, 7960 data points
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  • 7
    Publication Date: 2023-12-11
    Keywords: 1; 10; 11; 12; 17; 2; 3; 4; 9; Age, comment; carbonate hard grounds; Cerium, normalized; Cerium anomaly; CHC-01; CHC-02; CHC-03; CHC-04; CHC-09; CHC-10; CHC-11; CHC-12; CHC-17; Enewetak Atoll, Marshalls Islands; Event label; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; Lanthanum, normalized; Latemar Formation; Latitude of event; Longitude of event; Marjuman, Banff National Park; Mussafah Channel Hardground, UAE; Neodymium, normalized; Period; Praseodymium, normalized; Shale-normalized; Stage; Suwannee Limestone, USA; Yttrium, normalized
    Type: Dataset
    Format: text/tab-separated-values, 90 data points
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  • 8
    Publication Date: 2023-12-11
    Keywords: 1; 10; 11; 12; 13; 14; 15; 16; 17; 2; 3; 4; 5; 6; 7; 8; 9; Age, comment; Avon Park Formation, USA; carbonate hard grounds; CHC-01; CHC-02; CHC-03; CHC-04; CHC-05; CHC-06; CHC-07; CHC-08; CHC-09; CHC-10; CHC-11; CHC-12; CHC-13; CHC-14; CHC-15; CHC-16; CHC-17; Enewetak Atoll, Marshalls Islands; Eskett Limestones, England; Event label; Furongian, Banff National Park; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; Kanosh Formation, Utah; Latemar Formation; Latitude of event; Location; Longitude of event; Marjuman, Banff National Park; Meerssen Member, the Netherlands; Mussafah Channel Hardground, UAE; Number of measurements; Period; Qishn Formation, Oman; Sample code/label; Stage; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard deviation; strontium isotopes; Suwannee Limestone, USA; Upper Greensands, Devon, UK; δ13C, carbonate; δ18O, carbonate
    Type: Dataset
    Format: text/tab-separated-values, 168 data points
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  • 9
    Publication Date: 2023-12-11
    Keywords: 1; 10; 11; 12; 13; 14; 15; 16; 17; 2; 3; 4; 5; 6; 7; 8; 9; Age, comment; Avon Park Formation, USA; carbonate hard grounds; CHC-01; CHC-02; CHC-03; CHC-04; CHC-05; CHC-06; CHC-07; CHC-08; CHC-09; CHC-10; CHC-11; CHC-12; CHC-13; CHC-14; CHC-15; CHC-16; CHC-17; Enewetak Atoll, Marshalls Islands; Eskett Limestones, England; Event label; Furongian, Banff National Park; Geological sample; GEOS; Gerecse Mts. Of Hungary; Holder formation, New Mexico; Intertidal Zone, Persian Gulf, UAE; Kanosh Formation, Utah; Latemar Formation; Latitude of event; Location; Longitude of event; Magnesium; Magnesium/Calcium ratio; Magnesium/Calcium ratio, standard error; Manganese/Strontium ratio; Marjuman, Banff National Park; Meerssen Member, the Netherlands; Mg/Ca ratios; Mussafah Channel Hardground, UAE; Number of measurements; Period; Qishn Formation, Oman; Sample code/label; Stage; Strontium; Suwannee Limestone, USA; Upper Greensands, Devon, UK
    Type: Dataset
    Format: text/tab-separated-values, 255 data points
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  • 10
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    Unknown
    PANGAEA
    In:  Supplement to: Lombardi, Chiara; Rodolfo-Metalpa, Riccardo; Cocito, Silvia; Gambi, Maria Cristina; Taylor, Paul D (2011): Structural and geochemical alterations in the Mg calcite bryozoan Myriapora truncata under elevated seawater pCO2 simulating ocean acidification. Marine Ecology-An Evolutionary Perspective, 32(2), 211-221, https://doi.org/10.1111/j.1439-0485.2010.00426.x
    Publication Date: 2024-03-15
    Description: There are serious concerns that ocean acidification will combine with the effects of global warming to cause major shifts in marine ecosystems, but there is a lack of field data on the combined ecological effects of these changes due to the difficulty of creating large-scale, long-term exposures to elevated CO2 and temperature. Here we report the first coastal transplant experiment designed to investigate the effects of naturally acidified seawater on the rates of net calcification and dissolution of the branched calcitic bryozoan Myriapora truncata (Pallas, 1766). Colonies were transplanted to normal (pH 8.1), high (mean pH 7.66, minimum value 7.33) and extremely high CO2 conditions (mean pH 7.43, minimum value 6.83) at gas vents off Ischia Island (Tyrrhenian Sea, Italy). The net calcification rates of live colonies and the dissolution rates of dead colonies were estimated by weighing after 45 days (May-June 2008) and after 128 days (July-October) to examine the hypothesis that high CO2 levels affect bryozoan growth and survival differently during moderate and warm water conditions. In the first observation period, seawater temperatures ranged from 19 to 24 °C; dead M. truncata colonies dissolved at high CO2 levels (pH 7.66), whereas live specimens maintained the same net calcification rate as those growing at normal pH. In extremely high CO2 conditions (mean pH 7.43), the live bryozoans calcified significantly less than those at normal pH. Therefore, established colonies of M. truncata seem well able to withstand the levels of ocean acidification predicted in the next 200 years, possibly because the soft tissues protect the skeleton from an external decrease in pH. However, during the second period of observation a prolonged period of high seawater temperatures (25-28 °C) halted calcification both in controls and at high CO2, and all transplants died when high temperatures were combined with extremely high CO2 levels. Clearly, attempts to predict the future response of organisms to ocean acidification need to consider the effects of concurrent changes such as the Mediterranean trend for increased summer temperatures in surface waters. Although M. truncata was resilient to short-term exposure to high levels of ocean acidification at normal temperatures, our field transplants showed that its ability to calcify at higher temperatures was compromised, adding it to the growing list of species now potentially threatened by global warming.
    Keywords: Alkalinity, Gran titration (Gran, 1950); Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Benthic animals; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; Bryozoa; Calcification/Dissolution; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using seacarb after Nisumaa et al. (2010); Calculated using SYSTAT; Carbon, inorganic, dissolved; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, partial pressure, standard deviation; Carbon dioxide, standard deviation; CO2 vent; Coast and continental shelf; Containers and aquaria (20-1000 L or 〈 1 m**2); EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Field experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); INEL Curved Position Sensitive Detector (PSD) powder diffractometer; Mediterranean Sea; Myriapora truncata; Myriapora truncata, distal branch, magnesium carbonate concentration; Myriapora truncata, proximal branch, magnesium carbonate concentration; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; pH meter (Metrohm, 826 pH mobile); Salinity; Sample ID; Single species; Site; Temperate; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 495 data points
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