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  • 1
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    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
    Publication Date: 2023-07-10
    Description: 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.
    Keywords: 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
    Type: Dataset
    Format: text/tab-separated-values, 9360 data points
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    DATA PANGAEA
  • 2
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    Monitoraggio integrato di un'area marino-costiera: la foce del fiume Volturno (Mar Tirreno centrale) (2018)
    Details
    Publication Date: 2021-05-12
    Description: 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.
    Description: Published
    Description: 1-71
    Description: 4A. Oceanografia e clima
    Description: JCR Journal
    Keywords: bio-indicatori ; prospezioni geofisiche ; variazione linea di costa ; sedimentologia ; monitoraggio costiero
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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    PAPER (OA)
  • 3
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    Living and thanatocoenosis coccolithophore communities in a neritic area of the central Tyrrhenian Sea (2018)
    Details
    Publication Date: 2021-05-12
    Description: 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.
    Description: Project PON03 I-AMICA (High technology infrastructure for the Climate Environmental Integrated Monitoring; http://www.i-amica.it)
    Description: Published
    Description: 67-91
    Description: 5A. Paleoclima e ricerche polari
    Description: JCR Journal
    Keywords: Living coccolithophores ; Reworked Coccoliths ; Tyrrhenian Sea ; Central Mediterranean ; 03.01. General
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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    PAPER (OA)
  • 4
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    Live benthic foraminifera from the Volturno River mouth (central Tyrrhenian Sea, Italy) (2019)
    Details
    Publication Date: 2019-03-28
    Description: 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.
    Description: Published
    Description: 559–570
    Description: 4A. Oceanografia e clima
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Limitation Availability
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    PAPER (OA)
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