0000000000453914

AUTHOR

Leonardo Langone

showing 3 related works from this author

Reconstructing Bioinvasion Dynamics Through Micropaleontologic Analysis Highlights the Role of Temperature Change as a Driver of Alien Foraminifera I…

2021

Invasive alien species threaten biodiversity and ecosystem structure and functioning, but incomplete assessments of their origins and temporal trends impair our ability to understand the relative importance of different factors driving invasion success. Continuous time-series are needed to assess invasion dynamics, but such data are usually difficult to obtain, especially in the case of small-sized taxa that may remain undetected for several decades. In this study, we show how micropaleontologic analysis of sedimentary cores coupled with radiometric dating can be used to date the first arrival and to reconstruct temporal trends of foraminiferal species, focusing on the alien Amphistegina lo…

0106 biological sciencesSciencesea warmingPopulationBiodiversityOcean EngineeringQH1-199.5Aquatic ScienceOceanography010603 evolutionary biology01 natural sciencesInvasive speciesinvasive speciesradiometric datingForaminiferaMediterranean seaforaminifera invasive species lessepsian invasion Mediterranean Sea radiometric dating sea warming SSTMediterranean SeaeducationForaminifera -- Mediterranean SeaWater Science and TechnologyGlobal and Planetary Changeeducation.field_of_studybiologyEcology010604 marine biology & hydrobiologyQforaminiferaGeneral. Including nature conservation geographical distributionSettore GEO/01 - Paleontologia E Paleoecologiabiology.organism_classificationSSTSea surface temperatureGeographyTaxonIntroduced organisms -- Mediterranean SeaRadiometric datingRadioactive datingFrontiers in Marine Science
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Chronological records of metal deposition in sediments from the Strait of Sicily, central Mediterranean: assessing natural fluxes and anthropogenic a…

2010

Abstract Sediment box-cores were recovered from the Strait of Sicily along two onshore–offshore transects in water depths of 29–500 m. Samples were dated by 210 Pb and analysed for major and trace elements. Inspections of chronological profiles integrated with application of statistical algorithms to the geochemical dataset and supported by in situ hydrological observations were used to assess factors driving element distributions. Mineralogical and chemical variability of sediments offshore of the southwestern Sicily coast reflect the irregular sea floor morphology of the Adventure Bank. Anthropogenic inputs explain enrichments with respect to background values for Sb, As, Pb, and Hg, that…

Mediterranean climateBox-core sedimentsTrace elementsTrace elementSedimentFlow currentsAquatic ScienceOceanographySettore GEO/08 - Geochimica E VulcanologiaStrait of SicilyOceanographyStrait of Sicily Box-core sediments Trace elements 210Pb chronology Flow currentsThermohaline circulationSubmarine pipelineTrace metalTransectGeothermal gradient210Pb chronologyEcology Evolution Behavior and SystematicsGeology
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Mediterranean circulation perturbations over the last five centuries: Relevance to past Eastern Mediterranean Transient-type events

2016

The Eastern Mediterranean Transient (EMT) occurred in the Aegean Sea from 1988 to 1995 and is the most significant intermediate-to-deep Mediterranean overturning perturbation reported by instrumental records. The EMT was likely caused by accumulation of high salinity waters in the Levantine and enhanced heat loss in the Aegean Sea, coupled with surface water freshening in the Sicily Channel. It is still unknown whether similar transients occurred in the past and, if so, what their forcing processes were. In this study, sediments from the Sicily Channel document surface water freshening (SCFR) at 1910 ± 12, 1812 ± 18, 1725 ± 25 and 1580 ± 30 CE. A regional ocean hindcast links SCFR to enhanc…

Mediterranean climateMultidisciplinary010504 meteorology & atmospheric sciencesAtmospheric circulationEMT010502 geochemistry & geophysics01 natural sciencesArticleBottom waterEastern Mediterranean TransientMediterranean seaOceanographyPaleoceanography13. Climate actionPaleoceanographyNorth Atlantic oscillationAegean SeaAtlantic multidecadal oscillationMediterranean SeacirculationThermohaline circulation14. Life underwaterPaleoceanography; Mediterranean Sea; Eastern Mediterranean transientGeology0105 earth and related environmental sciencesScientific Reports
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