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  • 1
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    Coccolithophores from near the Volturno estuary (central Tyrrhenian Sea) (2014)
    PANGAEA
    In:  Supplement to: Bonomo, Sergio; Cascella, Antonio; Alberico, I; Ferraro, Luciana; Giordano, L; Lirer, Fabrizio; Vallefuoco, Mattia; Marsella, E (2014): Coccolithophores from near the Volturno estuary (central Tyrrhenian Sea). Marine Micropaleontology, 111, 26-37, https://doi.org/10.1016/j.marmicro.2014.06.001
    Details
    Publikationsdatum: 2023-03-11
    Beschreibung: We present the distribution pattern of living and surface sediment coccolithophores, the main phytoplankton calcifying group, from 22 stations set in a neritic environment (from 10 to 50 m water depth), adjacent to the shelf area of the Volturno River mouth (Gulf of Gaeta - central part of the Tyrrhenian Sea). The survey conducted in June 2012 included five transects perpendicular to the coast, which enabled us to provide indications on the structure of calcareous phytoplankton associations in relation to coastal dynamics and the Volturno River runoff. The total number of coccospheres ranged from 15 to 64 * 10**3/l coccolithophores. Emiliania huxleyi dominates the assemblages, followed by Rhabdosphaera xiphos, holococcolithophores and Syracosphaera pulchra. The coccolithophore community shows a typical vertical zonation, with K-strategist taxa in the upper 15 m and the deep community developed down to 40 m. The local water circulation significantly affects the spatial and vertical distribution of coccolithophores. The river discharge influences the distribution of coccolithophore taxa, resulting in a north-south gradient. In the northern sector, outside the influence of the Volturno River, the high values of R. xiphos suggest a negative correlation with river runoff. The surface sediment assemblages reflect the overall composition of the living coccolithophore communities. The distribution of abundant reworked species, both in water and sediment, provides useful information about coastal dynamics and sediment transport in the study area.
    Materialart: Dataset
    Format: application/zip, 2 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 2
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    Coccolithophores from near the Volturno estuary surface sediment samples (2014)
    PANGAEA
    Details
    Publikationsdatum: 2023-07-09
    Schlagwort(e): AMICA_A1_12_1; AMICA_A2_12_1; AMICA_A3_12_1; AMICA_A4_12_1; AMICA_B1_12_1; AMICA_B2_12_1; AMICA_B3_12_1; AMICA_B4_12_1; AMICA_C0_12_1; AMICA_C1_12_1; AMICA_C2_12_1; AMICA_C3_12_1; AMICA_C4_12_1; AMICA_D0_12_1; AMICA_D1_12_1; AMICA_D2_12_1; AMICA_D3_12_1; AMICA_D4_12_1; AMICA_E1_12_1; AMICA_E2_12_1; AMICA_E3_12_1; AMICA_E4_12_1; Coccoliths, other; Coccoliths, reworked; DEPTH, sediment/rock; Discosphaera tubifer; Elevation of event; Emiliania huxleyi; Event label; Gephyrocapsa, small; Gephyrocapsa oceanica; Holococcolithophora spp.; Latitude of event; Longitude of event; Mediterranean Sea; MULT; Multiple investigations; Placoliths, small; Pleurochrysis spp.; Rhabdosphaera xiphos; Syracosphaera histrica; Syracosphaera pulchra; Thoracosphaera heimii; Umbellosphaera tenuis; Umbilicosphaera spp.
    Materialart: Dataset
    Format: text/tab-separated-values, 330 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 3
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    Unbekannt
    Coccolithophores from near the Volturno estuary water samples (2014)
    PANGAEA
    Details
    Publikationsdatum: 2023-07-10
    Schlagwort(e): AMICA_A1_12_1; AMICA_A2_12_1; AMICA_A3_12_1; AMICA_A4_12_1; AMICA_B1_12_1; AMICA_B2_12_1; AMICA_B3_12_1; AMICA_B4_12_1; AMICA_C0_12_1; AMICA_C1_12_1; AMICA_C2_12_1; AMICA_C3_12_1; AMICA_C4_12_1; AMICA_D0_12_1; AMICA_D1_12_1; AMICA_D2_12_1; AMICA_D3_12_1; AMICA_D4_12_1; AMICA_E1_12_1; AMICA_E2_12_1; AMICA_E3_12_1; AMICA_E4_12_1; Braarudosphaera bigelowii; Calciosolenia murrayi; Ceratolithus cristatus; Coccolithophyceae; Coccoliths, other; Coccoliths, reworked; Coronosphaera binodata; Coronosphaera mediterranea; Coronosphaera spp.; DEPTH, water; Elevation of event; Emiliania huxleyi; Event label; Gephyrocapsa spp.; Helicosphaera carteri; Holococcolithophora spp.; Latitude of event; Longitude of event; Mediterranean Sea; MULT; Multiple investigations; Oxygen; pH; Placoliths, small; Rhabdosphaera clavigera; Rhabdosphaera xiphos; Salinity; Scyphosphaera apsteinii; Syracosphaera anthos; Syracosphaera histrica; Syracosphaera pulchra; Syracosphaera spp.; Syracosphaera tumularis; Temperature, water; Thoracosphaera heimii; Transmission of light; Umbellosphaera tenuis
    Materialart: Dataset
    Format: text/tab-separated-values, 1302 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 4
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    Unbekannt
    Planktonic foraminiferal assemblages in sediment core KC01B (2016)
    PANGAEA
    In:  Supplement to: Capotondi, Lucilla; Girone, Angela; Lirer, Fabrizio; Bergami, Caterina; Verducci, Marina; Vallefuoco, Mattia; Afferri, Angelica; Ferraro, Luciana; Pelosi, Nicola; de Lange, Gert J (2016): Central Mediterranean Mid-Pleistocene paleoclimatic variability and its association with global climate. Palaeogeography, Palaeoclimatology, Palaeoecology, 442, 72-83, https://doi.org/10.1016/j.palaeo.2015.11.009
    Details
    Publikationsdatum: 2023-07-10
    Beschreibung: Planktonic foraminiferal assemblages were studied at high-resolution in core KC01B from the Ionian Sea. Quantitative analysis allowed us to distinguish the main climatic features and associated paleoceanographic changes, that occurred between Marine Isotopic Stages (MIS) 13 and 9 (~500-300 ka). MIS 12 and MIS 10 are characterized by relatively temperate conditions and an oligotrophic oceanographic regime in the early part and by colder conditions and nutrient supply in the sub-surface water masses in the upper part. During these intervals, small but distinct peaks of Neogloboquadrina pachyderma sinistral (sin) are detected at times of extremely negative values of the planktonic foraminifera paleoclimatic curve. Their co-occurrence with similar episodes in the Atlantic suggests that the climate in the Central Mediterranean was associated with north-Atlantic millennial-scale climate instability. MIS 11 and MIS 9 are dominated by surficial warm-water taxa. The climate optimum is reached in the middle part of each of these stages, as denoted by the presence of Globigerinoides sacculifer, and persists for approximately 20 and 6 ka during MIS 11 and MIS 9 respectively. This warming is not constant but is characterized by three distinct intervals with elevated winter temperatures and/or weak winter mixing. Distribution of Globigerina bulloides, Turborotalita quinqueloba and N. pachyderma dextral (dex) indicates that significant environmental changes occur across the transitions from glacial to interglacial MIS 12/MIS 11 (Termination V) and MIS 10/MIS 9 (Termination IV). The studied record documents a close linkage between Mediterranean climate evolution and higher- and lower-latitude climate change throughout MIS 13-9.
    Schlagwort(e): Calabrian Ridge; CLIVAMPcruises; Counting 〉125 µm fraction; DEPTH, sediment/rock; Foraminifera, planktic, other; Globigerina bulloides; Globigerina rubescens; Globigerinita glutinata; Globigerinoides ruber; Globigerinoides sacculifer; Globigerinoides tenellus; Globorotalia inflata; Globorotalia scitula; Globorotalia truncatulinoides; Hastigerina siphonifera; KC01B; Neogloboquadrina dutertrei; Neogloboquadrina pachyderma dextral; Neogloboquadrina pachyderma sinistral; Orbulina spp.; PC; Piston corer; Ship of opportunity; Turborotalia quinqueloba
    Materialart: Dataset
    Format: text/tab-separated-values, 9360 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 5
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    Monitoraggio integrato di un'area marino-costiera: la foce del fiume Volturno (Mar Tirreno centrale) (2018)
    Details
    Publikationsdatum: 2021-05-12
    Beschreibung: Vengono presentati i risultati dell’attività di monitoraggio svolta nel corso del progetto PONa3_00363 I-AMICA (Infrastruttura di Alta tecnologia per il Monitoraggio Integrato Climatico-Ambientale; www.i-amica.it/i-amica/), nell’ambito delle attività relative all’Obiettivo Realizzativo 4.4 (Processi di interfaccia biosfera-idrosfera e funzionalità degli ecosistemi costieri). L’attività, che ha avuto come scopo l’acquisizione di conoscenze avanzate sulle dinamiche e/o variazioni nel tempo degli ecosistemi marino-costieri in relazione ai processi fisici, chimici e biologici che caratterizzano il loro habitat, si è sviluppata attraverso la sperimentazione di nuove metodologie di monitoraggio in relazione alle specifiche caratteristiche dell’area marino-costiera prospiciente la foce del fiume Volturno (Golfo di Gaeta). In particolare, oltre che sulle tecniche di monitoraggio classiche, lo studio si è principalmente focalizzato sulla acquisizione ed interpretazione di dati ambientali sia in colonna d’acqua che nei sedimenti a fondo mare e sulla identificazione di specie e/o associazioni di specie significative (bio-indicatori) da un punto di vista ambientale ed indicative dello stato di salute del sistema costiero. Poiché il sistema costiero rappresenta una struttura naturale complessa e delicata, la cui evoluzione è il risultato di delicati equilibri fisici, chimici e biologici, fortemente condizionabili dagli interventi antropici, l’attività di monitoraggio è stata integrata da studi sulla variazione della linea di costa, da studi sismostratigrafici della piana deltizia, sedimentologici e morfo-batimetrici dei fondali.
    Beschreibung: Published
    Beschreibung: 1-71
    Beschreibung: 4A. Oceanografia e clima
    Beschreibung: JCR Journal
    Schlagwort(e): bio-indicatori ; prospezioni geofisiche ; variazione linea di costa ; sedimentologia ; monitoraggio costiero
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: article
    Standort Signatur Einschränkungen Verfügbarkeit
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    ARTIKEL (OA)
  • 6
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    Impact of Freshwater Inflow From the Volturno River on Coastal Circulation (2021)
    MDPI
    Details
    Publikationsdatum: 2021-01-26
    Beschreibung: The coastal area located in front of the Volturno river estuary (the Gulf of Gaeta, central-eastern Tyrrhenian Sea) was synoptically sampled in seven surveys between June 2012 and October 2014. Vertical profiles of temperature and salinity were acquired on a high-resolution nearly-regular grid in order to describe the spatial and temporal variability of the characteristics of the waters. Moreover, the three-dimensional velocity field associated with each survey was computed through the full momentum equations of the Princeton Ocean Model to provide a first assessment of the steady-state circulation at small scale. The data analysis shows the entire water column to be characterized by an evident thermal cycle and a vertical thermohaline structure, dominated by three types of waters: the freshwater of the river, the saltier coastal Tyrrhenian waters, and transitional waters originating from their mixing. The inflow of freshwater strongly affects the density distribution, leading to strong temporal variability in the upper layer. Its impact is more evident in winter, sometimes inducing a vertical temperature inversion. In case of rainy events, and also in conditions of high vertical temperature stratification, it forms a surface-trapped layer with high density gradients. These and wind forcing contribute to the formation of small-scale shallow features, such as longshore currents and cyclonic and anticyclonic eddies. The latter influence the vertical stratification and modify the coastal circulation, preserving the transitional waters from the surrounding saltier ones.
    Beschreibung: Published
    Beschreibung: 293
    Beschreibung: 4A. Oceanografia e clima
    Beschreibung: JCR Journal
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: article
    Standort Signatur Einschränkungen Verfügbarkeit
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    ARTIKEL (OA)
  • 7
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    Living and thanatocoenosis coccolithophore communities in a neritic area of the central Tyrrhenian Sea (2018)
    Details
    Publikationsdatum: 2021-05-12
    Beschreibung: The analyses of water and sediment samples, collected at 24 marine stations in a coastal area (Gulf of Gaeta, central Tyrrhenian Sea) during a three year survey (2012–2014), have improved our knowledge of coccolithophore ecology in the Mediterranean neritic domain. A comparison between the results and the oceanographic data has highlighted the ecology of the considered groups, and quantified the relationship between the community structures and the environmental parameters. The coccosphere concentration measured in the Gulf of Gaeta is extremely variable over the sampling periods (min:64 l−1; max:2.4*105 l−1), and comparable with data from other Mediterranean sites. Placolith-bearing taxa are the dominant group of the living communities. The concentration and distribution of Emiliania huxleyi is controlled by the distance from the coast and the Volturno River runoff. The K-strategist taxa are an important component of the summer nannoplankton in the upper 15m and in the sediment samples. These taxa are also related to summer oligotrophic warm waters and low turbidity as well. The opportunistic behaviour of Helicosphaera carteri is confirmed and is related to moderately elevated nutrient levels and also tolerance to low salinity and terrigenous input. Nevertheless, our findings raise some questions on the reliability of H. carteri as a low salinity proxy. Overall, the sediment assemblages reflect the composition and the temporal distribution of the living communities. The occurrence and distribution of abundant reworked coccoliths, both in water and sediments, provides useful information about coastal dynamics and confirm their use as a reliable runoff proxy.
    Beschreibung: Project PON03 I-AMICA (High technology infrastructure for the Climate Environmental Integrated Monitoring; http://www.i-amica.it)
    Beschreibung: Published
    Beschreibung: 67-91
    Beschreibung: 5A. Paleoclima e ricerche polari
    Beschreibung: JCR Journal
    Schlagwort(e): Living coccolithophores ; Reworked Coccoliths ; Tyrrhenian Sea ; Central Mediterranean ; 03.01. General
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: article
    Standort Signatur Einschränkungen Verfügbarkeit
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    ARTIKEL (OA)
  • 8
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    A 4500 year record of palaeomagnetic secular variation and relative palaeointensity from the Tyrrhenian Sea (2021)
    Geological Society of London
    Details
    Publikationsdatum: 2021-01-26
    Beschreibung: A marine sediment core from the western Mediterranean provides a new high-resolution 4500 year record of palaeomagnetic secular variation and relative palaeointensity. In 2013, the 7.1 m C5 core was recovered from the Tyrrhenian Sea as part of the NextData climate data project. The coring site, 15 km offshore from the Volturno river mouth, is well located to record combined marine and terrestrial palaeoclimatic influences, and the fine-grained, rapidly deposited sediments are effective palaeomagnetic recorders. We investigate the palaeomagnetic field direction and strength recorded in the core, which provide a valuable high-resolution record of Holocene geomagnetic variation in the area. Using rock magnetic techniques, we constrain the magnetic mineralogy of the studied sediments and confirm their suitability for palaeomagnetic analysis. Palaeomagnetic declination and inclination records were determined by stepwise alternating-field demagnetization, and relative palaeointensity estimates were obtained based on normalization to anhysterestic and isothermal remanent magnetization and to magnetic susceptibility. The age of the core is well constrained with a tephra and biostratigraphic age model, and its magnetic records are compared with relevant core and model data for the region, demonstrating that our record is compatible with previous results from the area. An automated curve matching approach is applied to assess the compatibility of our data with the existing secular variation path for the Mediterranean area.
    Beschreibung: Published
    Beschreibung: 159–178
    Beschreibung: 1A. Geomagnetismo e Paleomagnetismo
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: book chapter
    Standort Signatur Einschränkungen Verfügbarkeit
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    ARTIKEL (OA)
  • 9
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    Live benthic foraminifera from the Volturno River mouth (central Tyrrhenian Sea, Italy) (2019)
    Details
    Publikationsdatum: 2019-03-28
    Beschreibung: Living benthic foraminiferal assemblages were investigated at 22 marine stations in front of the Volturno River mouth (Gulf of Gaeta, central Tyrrhenian Sea), during 3-years survey (2012–2014). The results were compared with the oceanographic data recorded at the same sites, to highlight the ecology of the main dominant species and the relationship between the community structures and the environmental variables (turbidity, dissolved oxygen content, salinity, temperature, and runoff). The living assemblage, analyzed in the top 1 cm of sea floor, was characterized by three dominant species (Ammonia tepida, Bulimina elongata, and Rectuvigerina phlegeri) during all the sampling periods. Correlation analysis identified turbidity, runoff, and oxygen as the main environmental factors influencing living foraminiferal assemblages. Ammonia tepida and Rectuvigerina phlegeri showed opportunistic behaviour in response to turbidity, oxygen, and salinity values. No significant correlation was recorded between Bulimina elongata and the environmental parameters, testifying the capability of this species to adapt to different environmental conditions. The occurrence and distribution of these species provided useful information about coastal dynamics and sediment transport, and our results confirmed them as reliable proxies of coastal water column turbidity and Volturno river basin runoff.
    Beschreibung: Published
    Beschreibung: 559–570
    Beschreibung: 4A. Oceanografia e clima
    Beschreibung: JCR Journal
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: article
    Standort Signatur Einschränkungen Verfügbarkeit
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    ARTIKEL (OA)
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