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The environmental impact of the Minoan eruption of Santorini (Thera): statistical analysis of palaeoecological data from Golbisar, southwest Turkey

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dc.contributor.author Eastwood, W. J.
dc.contributor.author Tibby, J.
dc.contributor.author Roberts, N.
dc.contributor.author Birks, Harry John Betteley
dc.contributor.author Lamb, H.F.
dc.date.accessioned 2007-12-12T14:42:02Z
dc.date.available 2007-12-12T14:42:02Z
dc.date.issued 2002
dc.identifier.citation The Holocene 2002 12(4): 431-444 en
dc.identifier.issn 0959-6836
dc.identifier.uri http://dx.doi.org/10.1191/0959683602hl557rp
dc.identifier.uri http://hdl.handle.net/1956/2497
dc.description.abstract A tephra layer originating from the mid-second millennium BC (3300 14C yr BP) ‘Minoan’ eruption of Santorini (or Thera) in the Aegean has been found in lake sediments at G6lhisar in southwest Turkey. Microstratigraphic analyses of tephra shard concentration (TSC), pollen, diatoms, sponge spicules and nonsiliceous microfossils in sediments from Gtlhisar permit the impact of this major volcanic eruption on terrestrial and aquatic biota to be investigated quantitatively. Partial redundancy analysis and associated Monte Carlo permutation tests suggest that TSC alone cannot be shown to have had a demonstrable independent and statistically significant effect on terrestrial pollen, non-siliceous microfossil or diatom assemblages. The lack of any clear, discernible change in the terrestrial pollen composition following tephra deposition suggests that there was minimal impact on regional vegetation over decadal-to-century timescales. However, evidence that the deposition of Santorini tephra may have had an impact on the lake system comes from the combined effect of lithology and TSC (which significantly covary) that explains a significant amount of variance in the aquatic data sets. In particular, diatoms and non-siliceous algae show increases in concentration following tephra deposition, exhibiting what appear to be decadal response times to perturbation. These imply enhanced lake productivity due to accelerated input of silica and other nutrients following tephra dissolution. en
dc.language.iso eng en
dc.publisher SAGE en
dc.subject Santorini en
dc.subject Thera en
dc.subject Minoan en
dc.subject Volcanic impact en
dc.subject Pollen en
dc.subject Diatoms en
dc.subject Redundancy analysis en
dc.subject Variance partitioning en
dc.subject Monte Carlo permutation tests en
dc.subject Late Holocene en
dc.title The environmental impact of the Minoan eruption of Santorini (Thera): statistical analysis of palaeoecological data from Golbisar, southwest Turkey en
dc.type Peer reviewed en
dc.type Journal article en
dc.subject.nsi VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 no


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