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| Titel |
Refugia of marine fish in the northeast Atlantic during the last glacial maximum: concordant assessment from archaeozoology and palaeotemperature reconstructions |
| VerfasserIn |
A. J. Kettle, A. Morales-Muñiz, E. Roselló-Izquierdo, D. Heinrich, L. A. Vøllestad |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 7, no. 1 ; Nr. 7, no. 1 (2011-03-03), S.181-201 |
| Datensatznummer |
250004405
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| Publikation (Nr.) |
 copernicus.org/cp-7-181-2011.pdf |
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| Zusammenfassung |
| Archaeozoological finds of the remains of marine and amphihaline fish from
the Last Glacial Maximum (LGM) ca. 21 ka ago show evidence of very different
species ranges compared to the present. We have shown how an ecological niche
model (ENM) based on palaeoclimatic reconstructions of sea surface
temperature and bathymetry can be used to effectively predict the spatial
range of marine fish during the LGM. The results indicate that the ranges of
marine fish species now in northwestern Europe were displaced
significantly southwards from the modern distribution, challenging an
existing paradigm of marine glacial refugia. The model presents strong
evidence that there was an invasion of important fish through the Straits of
Gibraltar in glacial times, where they were exploited by Palaeolithic human
populations around the western Mediterranean Sea. The ENM results are
important for ongoing studies of molecular ecology that aim to assess marine
glacial refugia from the genetic structure of living populations, and they
pose questions about the genetic identity of vanished marine populations
during the LGM. Economically, the approach may be used to understand how the
ranges of exploited fish species may be displaced with the future climate
warming. The research presents a challenge for future archaeozoological work
to delimit the glacial refugia and to verify palaeoclimatic reconstructions
based on deep-sea core records. |
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