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oai:docta.ucm.es:20.500.14352/511632025-07-31T13:57:40Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Dam, Juan A. van author Aziz, Hayfaa Abdul author Álvarez Sierra, María De Los Ángeles author Hilgen, Frederik J. author Hoek Ostende, Lars W. van den author Lourens, Lucas J. author Mein, Pierre author Meulen, Albert J. van der author Peláez-Campomanes de Labra, Pablo 2023-06-20T10:45:33Z 2023-06-20T10:45:33Z 2006 0028-0836 10.1038/nature05163 https://hdl.handle.net/20.500.14352/51163 http://doi.org/10.1038/nature05163 Mammals are among the fastest-radiating groups, being characterized by a mean species lifespan of the order of 2.5 million years (Myr)1,2. The basis for this characteristic timescale of origination, extinction and turnover is not well understood. Various studies have invoked climate change to explain mammalian species turnover3,4, but other studies have either challenged or only partly confirmed the climate–turnover hypothesis5–7. Here we use an exceptionally long (24.5–2.5Myr ago), dense, and welldated terrestrial record of rodent lineages from central Spain, and show the existence of turnover cycles with periods of 2.4–2.5 and 1.0Myr. We link these cycles to low-frequency modulations of Milankovitch oscillations8, and show that pulses of turnover occur at minima of the 2.37-Myr eccentricity cycle and nodes of the 1.2-Myr obliquity cycle. Because obliquity nodes and eccentricity minima are associated with ice sheet expansion and cooling and affect regional precipitation, we infer that long-period astronomical climate forcing is a major determinant of species turnover in small mammals and probably other groups as well. eng Long-period astronomical forcing of mammal turnover journal article URL https://docta.ucm.es/bitstreams/ed8200c4-36b6-47ca-a41d-18d7528834a3/download File MD5 0b9dfc5a0fe5faf7bd3af2c0440ea378 331447 application/pdf nature05163_1.pdf URL https://docta.ucm.es/bitstreams/ad572042-02de-4393-8529-4f5f14a17830/download File MD5 6747c8d6f965f68fe6be8a95af0ac865 30142 text/plain nature05163_1.pdf.txt