Planktonic foraminifera as bio-indicators for monitoring the climatic changes that have occurred over the past 2000 years in the southeastern Tyrrhenian Sea  

作　　者：Fabrizio LIRER Mario SPROVIERI Mattia VALLEFUOCO Luciana FERRARO Nicola PELOSI Laura GIORDANO Lucilla CAPOTONDI 

机构地区：[1]Institute for Coastal Marine Environment,National Research Council,Naples,Italy [2]Institute for Coastal Marine Environment,National Research Council,Torretta Granitola(Fraz.Campobello di Mazara,Tp),Italy [3]Istituto Scienze Marine,Istituto per l’Ambiente Marino Costiero,Consiglio Nazionale delle Ricerche,Consiglio Nazionale delle Ricerche,Bologna,Italy and Institute of Marine Sciences,National Research Council,Bologna,Italy

出　　处：《Integrative Zoology》2014年第4期542-554,共13页整合动物学（英文版）

基　　金：C90 and C836 gravity-cores have been collected by the IAMC-CNR(Napoli)aboard the CNR-Urania ves­sel while C90_1m gravity core has been acquired(using the core system SW104)aboard the CNR-Thetis vessel.The authors thank Werner Piller and Luca Maria Fore­si for their useful comments and suggestions.Moreover,many thanks are given to Rita Barra for a final revision of the English text.This research has been financially supported by the Project of Strategic Interest NextData PNR 2011-2013(www.nextdataproject.it).This is an IS­MAR-CNR contribution(no.1787).

摘　　要：A high-resolution integrated study has been performed in a super-expanded marine record(sedimentation rate spanning from 11 cm/100 years to 20 cm/100 years)from the continental shelf area of the southeastern Tyrrhe­nian Sea.Planktonic foraminiferal distribution illustrates 6 major environmental changes during the past 2000 years:(i)the Roman Period-Dark Age transition(from herbivorous-opportunistic to carnivorous species);(ii)the Dark Age-MCA transition(from carnivorous to herbivorous-opportunistic species);(iii)the Medieval Clas­sic Anomaly-Little Ice Age transition(a further and definitive change from carnivorous to herbivorous-opportunistic species);(iv)the period during the Maunder event between approximately 1720 AD and 1740 AD(turnover from the carnivorous planktonic foraminifer Globigerinodes ruber to the herbivorous-opportunistic planktonic foraminifer Turborotalita quinqueloba);(v)the Industrial Period(dominance of herbivorous-opportunistic planktonic foraminifera);and(vi)the Modern Warm Period at approximately 1940 AD(the last turnover in favor of herbivorous-opportunistic planktonic foraminifers,associated with an increase in benthic foraminifera).Our studies lead us to link this latter feature to an anthropogenic impact associated with the dam­ming of Sele River(Salerno Gulf)at 1934 AD,which induced a change in the sediment input with a strong de­crease in coarse-grained fraction and a probable alteration in nutrient supply.Theδ^(18)O_(G.ruber) record of the past 2000 years shows the alternation of warm/wet and cold/dry events related to the Roman Period,the Dark Age,the Medieval Classic Anomaly,the Little Ice Age,the Industrial Period and the Modern Warm Period.The 5 ev­identδ^(18)O_(G.ruber) oscillations(between approximately 1325 AD and 1940 AD)coincide with the 5 minima in the solar activity record(Wolf,Spörer,Maunder,Dalton and Damon events).

关 键 词：Mediterranean Basin oxygen stable isotopes planktonic foraminifera southeastern Tyrrhenian Sea 

分 类 号：P73[天文地球—海洋科学]