Holocene hydroclimate changes in continental Croatia recorded in speleothem δ13C and δ18O from Nova Grgosova Cave
We present the first stable isotope (δ13C and δ18O) speleothem record from continental Croatia retrieved from two coeval stalagmites from Nova Grgosova Cave. U-Th dates constrain the stalagmite growth history from 10ka to the present, revealing coeval growth between 7.8 and 5.6ka. We interpret δ18O...
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Online Access: | http://hdl.handle.net/11381/2901672 https://doi.org/10.1177/09596836211019120 |
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ftunivparmairis:oai:air.unipr.it:11381/2901672 2024-04-14T08:16:08+00:00 Holocene hydroclimate changes in continental Croatia recorded in speleothem δ13C and δ18O from Nova Grgosova Cave Maša Surić Andrea Columbu Robert Lončarić Petra Bajo Neven Bočić Nina Lončar Russell Drysdale John Hellstrom Surić, Maša Columbu, Andrea Lončarić, Robert Bajo, Petra Bočić, Neven Lončar, Nina Drysdale, Russell Hellstrom, John 2021 http://hdl.handle.net/11381/2901672 https://doi.org/10.1177/09596836211019120 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000674967000005 volume:31 issue:9 firstpage:1401 lastpage:1416 numberofpages:16 journal:THE HOLOCENE http://hdl.handle.net/11381/2901672 doi:10.1177/09596836211019120 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85108990475 info:eu-repo/semantics/openAccess speleothem stable isotope hydroclimate change paleoclimate Holocene Croatia info:eu-repo/semantics/article 2021 ftunivparmairis https://doi.org/10.1177/09596836211019120 2024-03-21T18:47:11Z We present the first stable isotope (δ13C and δ18O) speleothem record from continental Croatia retrieved from two coeval stalagmites from Nova Grgosova Cave. U-Th dates constrain the stalagmite growth history from 10ka to the present, revealing coeval growth between 7.8 and 5.6ka. We interpret δ18O as an autumn/winter hydrological proxy related to changes of vapor source, precipitation amount, and/or seasonal rainfall distribution, while δ13C predominantly responds to spring/summer vegetation status and soil microbial activity. We identify several centennial to millennial-scale hydroclimate oscillations during this period that result from multiple forcing factors. Along with amount and source effect, it appears that some centennial variations were governed also by seasonal moisture balance. From 9.2 to 8.8ka BP, the local environmental setting was characterized by enhanced vegetation activity, while during the 8.2ka event the main feature was a change in precipitation seasonality. The most prominent change, identified in both δ13C records, is a sudden decline of vegetation and soil biological activity around 7.4 ka, indicating a precipitation decrease at a time of maximum plant growth in spring and summer and likely also reduced precipitation in autumn and winter. Although small in magnitude in these speleothems, a peak in δ18O and δ13C values at 4.3–4.1ka suggests that both summer and winter conditions were substantially drier during the 4.2ka event, in accordance with increased Mediterranean aridity and consistent with other global climate changes reported at this time. Compared to the present North Atlantic Oscillation (NAO) influence, we assume that millennial Holocene NAO-like variations were persistent through the Holocene via their effect on modifying local/regional air temperature, vapor origin, and inter- and intrannual precipitation distribution. Anthropogenic deforestation, which was the first major human impact on the environment during the Neolithic agricultural revolution, is excluded as a leading ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Archivio della ricerca dell'Università di Parma (CINECA IRIS) The Holocene 31 9 1401 1416 |
institution |
Open Polar |
collection |
Archivio della ricerca dell'Università di Parma (CINECA IRIS) |
op_collection_id |
ftunivparmairis |
language |
English |
topic |
speleothem stable isotope hydroclimate change paleoclimate Holocene Croatia |
spellingShingle |
speleothem stable isotope hydroclimate change paleoclimate Holocene Croatia Maša Surić Andrea Columbu Robert Lončarić Petra Bajo Neven Bočić Nina Lončar Russell Drysdale John Hellstrom Holocene hydroclimate changes in continental Croatia recorded in speleothem δ13C and δ18O from Nova Grgosova Cave |
topic_facet |
speleothem stable isotope hydroclimate change paleoclimate Holocene Croatia |
description |
We present the first stable isotope (δ13C and δ18O) speleothem record from continental Croatia retrieved from two coeval stalagmites from Nova Grgosova Cave. U-Th dates constrain the stalagmite growth history from 10ka to the present, revealing coeval growth between 7.8 and 5.6ka. We interpret δ18O as an autumn/winter hydrological proxy related to changes of vapor source, precipitation amount, and/or seasonal rainfall distribution, while δ13C predominantly responds to spring/summer vegetation status and soil microbial activity. We identify several centennial to millennial-scale hydroclimate oscillations during this period that result from multiple forcing factors. Along with amount and source effect, it appears that some centennial variations were governed also by seasonal moisture balance. From 9.2 to 8.8ka BP, the local environmental setting was characterized by enhanced vegetation activity, while during the 8.2ka event the main feature was a change in precipitation seasonality. The most prominent change, identified in both δ13C records, is a sudden decline of vegetation and soil biological activity around 7.4 ka, indicating a precipitation decrease at a time of maximum plant growth in spring and summer and likely also reduced precipitation in autumn and winter. Although small in magnitude in these speleothems, a peak in δ18O and δ13C values at 4.3–4.1ka suggests that both summer and winter conditions were substantially drier during the 4.2ka event, in accordance with increased Mediterranean aridity and consistent with other global climate changes reported at this time. Compared to the present North Atlantic Oscillation (NAO) influence, we assume that millennial Holocene NAO-like variations were persistent through the Holocene via their effect on modifying local/regional air temperature, vapor origin, and inter- and intrannual precipitation distribution. Anthropogenic deforestation, which was the first major human impact on the environment during the Neolithic agricultural revolution, is excluded as a leading ... |
author2 |
Surić, Maša Columbu, Andrea Lončarić, Robert Bajo, Petra Bočić, Neven Lončar, Nina Drysdale, Russell Hellstrom, John |
format |
Article in Journal/Newspaper |
author |
Maša Surić Andrea Columbu Robert Lončarić Petra Bajo Neven Bočić Nina Lončar Russell Drysdale John Hellstrom |
author_facet |
Maša Surić Andrea Columbu Robert Lončarić Petra Bajo Neven Bočić Nina Lončar Russell Drysdale John Hellstrom |
author_sort |
Maša Surić |
title |
Holocene hydroclimate changes in continental Croatia recorded in speleothem δ13C and δ18O from Nova Grgosova Cave |
title_short |
Holocene hydroclimate changes in continental Croatia recorded in speleothem δ13C and δ18O from Nova Grgosova Cave |
title_full |
Holocene hydroclimate changes in continental Croatia recorded in speleothem δ13C and δ18O from Nova Grgosova Cave |
title_fullStr |
Holocene hydroclimate changes in continental Croatia recorded in speleothem δ13C and δ18O from Nova Grgosova Cave |
title_full_unstemmed |
Holocene hydroclimate changes in continental Croatia recorded in speleothem δ13C and δ18O from Nova Grgosova Cave |
title_sort |
holocene hydroclimate changes in continental croatia recorded in speleothem δ13c and δ18o from nova grgosova cave |
publishDate |
2021 |
url |
http://hdl.handle.net/11381/2901672 https://doi.org/10.1177/09596836211019120 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000674967000005 volume:31 issue:9 firstpage:1401 lastpage:1416 numberofpages:16 journal:THE HOLOCENE http://hdl.handle.net/11381/2901672 doi:10.1177/09596836211019120 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85108990475 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1177/09596836211019120 |
container_title |
The Holocene |
container_volume |
31 |
container_issue |
9 |
container_start_page |
1401 |
op_container_end_page |
1416 |
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1796314701641023488 |