Ostracod-based palaeotemperature reconstructions for MIS 11 human occupation at Beeches Pit, West Stow, Suffolk, UK

Benardout, Ginny

doi:10.1016/j.jas.2014.07.027

Cited by 7 publications

(8 citation statements)

References 23 publications

(41 reference statements)

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“…The other is West Stow in Suffolk, where the lower part of the sequence represents the early part of the interglacial period, while the upper part (Bed 7), separated from the lower interval by a hiatus, contains cold-climate indicators (including ostracods, molluscs, and mammals) as well as thermophilous mammals and fish (Preece et al, 2007), the mixture being suggestive of a similar situation to that discussed earlier for Stratum B at Hoxne. The MOTR results for Bed 7 at West Stow (January −7°C to −1°C, July +15°C to +21°C) suggest a more continental climate, with winters at least 4°C colder than today, and are quite similar to those for Stratum C at Hoxne (Benardout, 2015). It is possible that the cold intervals at the different sites each correlate with a different isotopic episode in the deep-ocean record, but it is worth considering that, given their occurrence within a relatively small geographic area, it is not unreasonable to expect that all three experienced the same climatic variations capable of influencing their sedimentary and fossil records in similar ways.…”

Section: Discussionmentioning

confidence: 66%

“…The MOTR ranges for the combined Stratum C assemblage are January −7°C to +1°C and July +14°C to +19°C. The lower extreme of the July MOTR is 1°cooler than the lower extreme of Benardout's (2015) July result for Stratum C (+15°C to +19°C), a discrepancy that can be explained by our decision not to include I. decipiens in our analyses because of taxonomic uncertainties within the genus Ilyocypris. Also worthy of note are the occurrences of three extinct taxa with palaeoclimatic significance: L. batesi, L. falcata, and I. quinculminata.…”

Section: Motr Methods Palaeotemperature Reconstructionsmentioning

confidence: 82%

“…Quantitative palaeoclimate reconstructions are of key importance in informing such discussion, but so far the available palaeotemperature reconstructions for Hoxne have been limited to those based on beetles for Strata F, D, and C (Coope, 1993; Ashton et al, 2008), with the addition of an ostracod-based reconstruction of Stratum C palaeotemperatures by Benardout (2015) that disagrees with the beetle-based reconstruction. Quantitative palaeotemperature reconstructions for the Hoxnian interglacial and post-interglacial intervals of MIS 11 have been published for five other British sites, each based on the application of a single proxy method (Table 1).…”

Section: Introductionmentioning

confidence: 99%

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A terrestrial record of climate variation during MIS 11 through multiproxy palaeotemperature reconstructions from Hoxne, UK

et al. 2022

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A terrestrial (lacustrine and fluvial) palaeoclimate record from Hoxne (Suffolk, UK) shows two temperate phases separated by a cold episode, correlated with MIS 11 subdivisions corresponding to isotopic events 11.3 (Hoxnian interglacial period), 11.24 (Stratum C cold interval), and 11.23 (warm interval with evidence of human presence). A robust, reproducible multiproxy consensus approach validates and combines quantitative palaeotemperature reconstructions from three invertebrate groups (beetles, chironomids, and ostracods) and plant indicator taxa with qualitative implications of molluscs and small vertebrates. Compared with the present, interglacial mean monthly air temperatures were similar or up to 4.0°C higher in summer, but similar or as much as 3.0°C lower in winter; the Stratum C cold interval, following prolonged nondeposition or erosion of the lake bed, experienced summers 2.5°C cooler and winters between 5°C and 10°C cooler than at present. Possible reworking of fossils into Stratum C from underlying interglacial assemblages is taken into account. Oxygen and carbon isotopes from ostracod shells indicate evaporatively enriched lake water during Stratum C deposition. Comparative evaluation shows that proxy-based palaeoclimate reconstruction methods are best tested against each other and, if validated, can be used to generate more refined and robust results through multiproxy consensus.

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Section: Discussionmentioning

confidence: 66%

Section: Motr Methods Palaeotemperature Reconstructionsmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

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A terrestrial record of climate variation during MIS 11 through multiproxy palaeotemperature reconstructions from Hoxne, UK

et al. 2022

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“…Figure 5) Bilzingsleben site in Germany showed only slightly higher temperatures than modern day (Daniel & Frenzel, 2010; Diebel & Pietrzeniuk, 1980) (Figure 7), MOTR from the Hoxnian (cf. Figure 5) Beeches Pit site in Suffolk, UK, further showed that the human occupation not only took place during an interglacial but also continued into a succeeding cold phase (Benardout, 2015). Other Middle Pleistocene sites in the UK, like the Hoxnian (cf.…”

Section: Applicationsmentioning

confidence: 97%

Nonmarine Ostracoda as proxies in (geo‐)archaeology — A review

2022

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Ostracods as bioindicators are extremely useful for reconstructing palaeoenvironment and palaeoclimate and can also indicate the provenance of sediments and materials, for example, in studies on ancient commercial networks. Ostracods are small crustaceans that live in almost all aquatic habitats, both natural and man‐made. Due to their calcitic carapace, they have high fossilization potential, and their use in geoarchaeology has been steadily increasing during the last decades. Their small size needs mean that only small volumes of sediment samples are needed, and species‐specific ecological tolerances and preferences allow detailed palaeoenvironmental reconstructions. Typical methods of their application are palaeoecological analyses of associations based on ecological information and taphonomy, morphometric variability and stable isotope and chemistry analyses of their shells. The present paper aims to present an overview of applications of non‐marine ostracods in (geo‐)archaeological research, recommending sampling and analytical techniques for addressing archaeological research questions on palaeoclimate, habitat and landscape changes, water availability and quality, land use and other anthropogenic impacts, the provenance of materials and commercial networks to promote the application of Ostracoda in geoarchaeology/environmental archaeology.

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“…Because of the keen interest in MIS 11 climate evolution, studies exist from different areas and from continental and marine archives (e.g., Ayling et al, 2015;Benardout, 2015;Candy et al, 2014;Cheng et al, 2016;D'Anjou et al, 2013;Fawcett et al, 2011;Milker et al, 2013;Antoine et al, 2016;Regattieri et al, 2016;Reyes et al, 2014;Stepanchuk and Moigne, 2016;Saavedra-Pellitero et al, 2017). Accordingly, an increasing number of deep-sea cores provided insights into surface-ocean dynamics (e.g., Dickson et al, 2010;Voelker et al, 2010;Kandiano et al, 2012;Vázquez Riveiros et al, 2013;Maiorano et al, 2015;Saavedra-Pellitero et al, 2017), including on the Iberian Margin (Rodrigues et al, 2011(Rodrigues et al, , 2017Amore et al, 2012;Palumbo et al, 2013a;Oliveira et al, 2016;Sanchéz-Goñi et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Surface-ocean dynamics during eccentricity minima: a comparison between interglacial Marine Isotope Stage (MIS) 1 and MIS 11 on the Iberian Margin

Palumbo¹,

Voelker

Flores

et al. 2019

Global and Planetary Change

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Understanding interglacial climate variability is a key issue in the scientific community. Here we compared records from Marine Isotope Stage (MIS) 11 to those from MIS 1 (Holocene) as they are perceived to be possible analogs. Our study on the Iberian Margin, a key area to investigate surface dynamics in the Atlantic Ocean, incorporates coccolithophore assemblage and alkenone data of core MD03-2699 and their statistical analyses. Evaluating similarities between MIS 11 and MIS 1 depends on the way the two MIS are being aligned, i.e. at the deglaciation or based on the precession signal. During the deglaciation of either MIS 12 or MIS 2, the Iberian Margin was affected by abrupt decreases in SST and in coccolithophores' paleoproductivity caused by the arrival of subpolar surface waters. Just prior to the decline, in both the intervals, the Portugal Current affected the studied site, although a possible difference in upwelling strength is here suggested and related to more intense westerlies during the last glacial than the late MIS 12. Similar surface-ocean dynamics occurred at the onset of both MIS 11 and MIS 1 as indicated by the prevalence of the Iberian Poleward Current and sometimes the Azores Current, although the subtropical waters were more oligotrophic during the MIS 2 deglaciation than the MIS 12 one. Synchronizing our records according to the precession cycles aligns the early-to-mid Holocene with the second, warmer phase of MIS 11c. During both these intervals, the western Iberian Margin was mainly affected by the Iberian Poleward Current that transported more temperate-warm, mesotrophic surface waters during MIS 11c than during the early-to-mid Holocene. During the early to mid-Holocene the Iberian Margin endured incursions of colder surface waters that did not occur during MIS 11c allowing us to hypothesize that the studied site experienced, from a paleoceanographic point of view, a more stable period during MIS 11c than the early Holocene. Finally, spectral analysis suggests the role of full, half and fourth precession components in driving surface-ocean variability during MIS 11 and during the last 24 kyr BP.

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Ostracod-based palaeotemperature reconstructions for MIS 11 human occupation at Beeches Pit, West Stow, Suffolk, UK

Cited by 7 publications

References 23 publications

A terrestrial record of climate variation during MIS 11 through multiproxy palaeotemperature reconstructions from Hoxne, UK

A terrestrial record of climate variation during MIS 11 through multiproxy palaeotemperature reconstructions from Hoxne, UK

Nonmarine Ostracoda as proxies in (geo‐)archaeology — A review

Surface-ocean dynamics during eccentricity minima: a comparison between interglacial Marine Isotope Stage (MIS) 1 and MIS 11 on the Iberian Margin

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