- Title
- Evidence of thermophilisation and elevation-dependent warming during the Last Interglacial in the Italian Alps
- Creator
- Johnston, V. E.; Borsato, A.; Frisia, S.; Spötl, C.; Dublyansky, Y.; Töchterle, P.; Hellstrom, J. C.; Bajo, P.; Edwards, R. L.; Cheng, H.
- Relation
- Scientific Reports Vol. 8, no. 2680
- Publisher Link
- http://dx.doi.org/10.1038/s41598-018-21027-3
- Publisher
- Nature Publishing Group
- Resource Type
- journal article
- Date
- 2018
- Description
- Thermophilisation is the response of plants communities in mountainous areas to increasing temperatures, causing an upward migration of warm-adapted (thermophilic) species and consequently, the timberline. This greening, associated with warming, causes enhanced evapotranspiration that leads to intensification of the hydrological cycle, which is recorded by hydroclimate-sensitive archives, such as stalagmites and flowstones formed in caves. Understanding how hydroclimate manifests at high altitudes is important for predicting future water resources of many regions of Europe that rely on glaciers and snow accumulation. Using proxy data from three coeval speleothems (stalagmites and flowstone) from the Italian Alps, we reconstructed both the ecosystem and hydrological setting during the Last Interglacial (LIG); a warm period that may provide an analogue to a near-future climate scenario. Our speleothem proxy data, including calcite fabrics and the stable isotopes of calcite and fluid inclusions, indicate a +4.3 ± 1.6 °C temperature anomaly at ~2000 m a.s.l. for the peak LIG, with respect to present-day values (1961–1990). This anomaly is significantly higher than any low-altitude reconstructions for the LIG in Europe, implying elevation-dependent warming during the LIG. The enhanced warming at high altitudes must be accounted for when considering future climate adaption strategies in sensitive mountainous regions.
- Subject
- environmental monitoring; geochemistry; palaeoclimate; thermophilisation; last interglacial; Italian alps
- Identifier
- http://hdl.handle.net/1959.13/1453339
- Identifier
- uon:44651
- Identifier
- ISSN:2045-2322
- Rights
- © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
- Language
- eng
- Full Text
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