RT Journal Article
T1 Long-period astronomical forcingof mammal turnover
A1 Dam, Juan A. van
A1 Aziz, Hayfaa Abdul
A1 Álvarez Sierra, María De Los Ángeles
A1 Hilgen, Frederik J.
A1 Hoek Ostende, Lars W. van den
A1 Lourens, Lucas J.
A1 Mein, Pierre
A1 Meulen, Albert J. van der
A1 Peláez-Campomanes de Labra, Pablo
AB Mammals are among the fastest-radiating groups, being characterizedby 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 studieshave invoked climate change to explain mammalian speciesturnover3,4, but other studies have either challenged or onlypartly confirmed the climate–turnover hypothesis5–7. Here weuse an exceptionally long (24.5–2.5Myr ago), dense, and welldatedterrestrial record of rodent lineages from central Spain,and show the existence of turnover cycles with periods of2.4–2.5 and 1.0Myr. We link these cycles to low-frequencymodulations of Milankovitch oscillations8, and show thatpulses of turnover occur at minima of the 2.37-Myr eccentricitycycle and nodes of the 1.2-Myr obliquity cycle. Because obliquitynodes and eccentricity minima are associated with icesheet expansion and cooling and affect regional precipitation, weinfer that long-period astronomical climate forcing is a majordeterminant of species turnover in small mammals and probablyother groups as well.
PB Nature Publishing Group
SN 0028-0836
YR 2006
FD 2006
LK https://hdl.handle.net/20.500.14352/51163
UL https://hdl.handle.net/20.500.14352/51163
LA eng
DS Docta Complutense
RD 7 abr 2025