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Abstract: The sequence from Abric Romaní has provided several palaeoecological studies. This paper presents a synthesis of the results yielded by palynology, including the data from the entire non-excavated deposits, and the data obtained through the study of large mammals, micromammals, herpetofauna, and anthracology from the excavated layers. The palaeobotanical studies show that the sequence is mainly related to pine forests, and near or within these dominant forests there were smaller plant formations and/or secondary species with a Mediterranean and/or Atlantic character. Nevertheless, continuous forest did not dominate the entire region. The fauna occupying the territory indicate open spaces in which seasonal grasslands proliferated, dry assemblages in sunny areas and humid ones in mountain shadows. The non-excavated archaeological layers correspond to MIS 4, initially characterized by temperate and humid conditions, and thereafter cool and humid until HS 6 and MIS 3. Afterwards, at the beginning of the MIS 3, the Dansgaard–Oeschger cycles, ∼1500 yr rapid and abrupt climatic changes, occurred during the deposition of the archaeological levels O, N, M, L, K and J. Later, these events were interrupted by a cold and dry phase, between ca 49 and 47 ka BP, which affected levels Ja, I and H, culminating with HS 5. Finally, this cold episode was followed by the Hengelo interstadial or DO 12, characterized by a temperate and humid climate identified in levels E and D. [Copyright &y& Elsevier]