Twentieth-century warming and hydrographical changes in the Tagus Prodelta, eastern North Atlantic | - CCMAR -

Journal Article

TitleTwentieth-century warming and hydrographical changes in the Tagus Prodelta, eastern North Atlantic
Publication TypeJournal Article
AuthorsBartels-Jonsdottir, HB, Voelker, AHL, Knudsen, KL, Abrantes, F
Year of Publication2009
JournalThe Holocene
Volume19
Issue3
Date PublishedJan-05-2009
Pagination369 - 380
ISSN0959-6836
Abstract

Pluri-annual proxy records of marine sediment cores from the Tagus Prodelta off Lisbon, Portugal, have been generated to gain insight into the climatic and hydrographic changes in the area during the twentieth century. The study includes benthic and planktonic foraminiferal faunas and the stable isotopic composition of one benthic (Uvigerina celtica) and two planktonic (Globigerina bulloides and Globorotalia inflata) foraminiferal species. Sea bottom and surface water temperatures were estimated based on the δ18O values of these species and compared with instrumental data. The foraminiferal fauna and the isotope-based temperature record indicate increasing temperatures throughout the last century. The immigration of a new species, Saidovina karreriana, to the area around 100 years ago indicates changes in the trophic conditions and water mass properties, which are probably at least partly due to anthropogenic pollution.

URLhttp://hol.sagepub.com/cgi/doi/10.1177/0959683608101388
DOI10.1177/0959683608101388
Short TitleThe Holocene