Variabilidad milenaria registrada por la fauna bentónica en elGolfo de León (Mediterráneo noroccidental) entre los eventos Heinrich 3 y 4 | Millennial variability recorded by the benthic fauna in the Gulf of Lions (Northwestern Mediterranean) between Heinrich 3 and 4
2007
González-Mora, Beatriz | Sierro Sánchez, Francisco Javier | Flores Villarejo, José Abel | Berné, Serge
En este trabajo se pretende estudiar la variabilidad climática milenaria con diversos indicadores analizando las variaciones sufridas por la fauna bentónica.
Show more [+] Less [-]Variations in the benthic foraminifer assemblage have been studied from a 300m-depth core in the Gulf ofLions (PRGL1-4) during the last 41-28 kyr (between Heinrich events 4 and 3). The number of benthicforaminifers per gram, the infaunal/epifaunal ratio, and most of the benthic species relative abundanceshow a very clear Dansgaard-Oeschger variability. The stadial species suggest a well oxygenated oligotrophicenvironment with low organic matter content in the sediment. By contrast, the interstadial assemblageimplies a more eutrophic environment with high organic matter and low oxygen content. No relevantdifferences are observed in the benthic fauna between Heinrich events and the other stadials.
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