Articles | Volume 14, issue 3
https://doi.org/10.5194/essd-14-1331-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-14-1331-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Harmonized chronologies of a global late Quaternary pollen dataset (LegacyAge 1.0)
Chenzhi Li
Polar Terrestrial Environmental Systems, Alfred Wegener Institute Helmholtz Centre for Polar and Marine
Research, Telegrafenberg A45, 14473 Potsdam, Germany
Institute of Environmental Science and Geography, University of
Potsdam, Karl-Liebknecht-Str. 24–25, 14476 Potsdam, Germany
Alexander K. Postl
Polar Terrestrial Environmental Systems, Alfred Wegener Institute Helmholtz Centre for Polar and Marine
Research, Telegrafenberg A45, 14473 Potsdam, Germany
Thomas Böhmer
Polar Terrestrial Environmental Systems, Alfred Wegener Institute Helmholtz Centre for Polar and Marine
Research, Telegrafenberg A45, 14473 Potsdam, Germany
Xianyong Cao
Polar Terrestrial Environmental Systems, Alfred Wegener Institute Helmholtz Centre for Polar and Marine
Research, Telegrafenberg A45, 14473 Potsdam, Germany
Alpine Paleoecology and Human Adaptation Group (ALPHA), State Key
Laboratory of Tibetan Plateau Earth System, Resources and Environment
(TPESRE), Institute of Tibetan Plateau Research, Chinese Academy of
Sciences, 100101 Beijing, China
Andrew M. Dolman
Polar Terrestrial Environmental Systems, Alfred Wegener Institute Helmholtz Centre for Polar and Marine
Research, Telegrafenberg A45, 14473 Potsdam, Germany
Ulrike Herzschuh
CORRESPONDING AUTHOR
Polar Terrestrial Environmental Systems, Alfred Wegener Institute Helmholtz Centre for Polar and Marine
Research, Telegrafenberg A45, 14473 Potsdam, Germany
Institute of Environmental Science and Geography, University of
Potsdam, Karl-Liebknecht-Str. 24–25, 14476 Potsdam, Germany
Institute of Biochemistry and Biology, University of Potsdam,
Karl-Liebknecht-Str. 24–25, 14476 Potsdam, Germany
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Ulrike Herzschuh, Thomas Böhmer, Chenzhi Li, Manuel Chevalier, Raphaël Hébert, Anne Dallmeyer, Xianyong Cao, Nancy H. Bigelow, Larisa Nazarova, Elena Y. Novenko, Jungjae Park, Odile Peyron, Natalia A. Rudaya, Frank Schlütz, Lyudmila S. Shumilovskikh, Pavel E. Tarasov, Yongbo Wang, Ruilin Wen, Qinghai Xu, and Zhuo Zheng
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Timon Miesner, Ulrike Herzschuh, Luidmila A. Pestryakova, Mareike Wieczorek, Evgenii S. Zakharov, Alexei I. Kolmogorov, Paraskovya V. Davydova, and Stefan Kruse
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Nannan Wang, Lina Liu, Xiaohuan Hou, Yanrong Zhang, Haicheng Wei, and Xianyong Cao
Clim. Past, 18, 2381–2399, https://doi.org/10.5194/cp-18-2381-2022, https://doi.org/10.5194/cp-18-2381-2022, 2022
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We reconstructed the vegetation and climate change since the last 14.2 ka BP from a fossil pollen record together with multiple proxies (grain size, contents of total organic carbon and total nitrogen) on the northeast Tibetan Plateau. The results reveal that an arid climate occurs in the early Holocene and the vegetation could be disturbed by human activities to some extent after ca. 0.24 ka BP (1710 CE).
Ulrike Herzschuh, Chenzhi Li, Thomas Böhmer, Alexander K. Postl, Birgit Heim, Andrei A. Andreev, Xianyong Cao, Mareike Wieczorek, and Jian Ni
Earth Syst. Sci. Data, 14, 3213–3227, https://doi.org/10.5194/essd-14-3213-2022, https://doi.org/10.5194/essd-14-3213-2022, 2022
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Pollen preserved in environmental archives such as lake sediments and bogs are extensively used for reconstructions of past vegetation and climate. Here we present LegacyPollen 1.0, a dataset of 2831 fossil pollen records from all over the globe that were collected from publicly available databases. We harmonized the names of the pollen taxa so that all datasets can be jointly investigated. LegacyPollen 1.0 is available as an open-access dataset.
Ramesh Glückler, Rongwei Geng, Lennart Grimm, Izabella Baisheva, Ulrike Herzschuh, Kathleen R. Stoof-Leichsenring, Stefan Kruse, Andrei Andreev, Luidmila Pestryakova, and Elisabeth Dietze
EGUsphere, https://doi.org/10.5194/egusphere-2022-395, https://doi.org/10.5194/egusphere-2022-395, 2022
Preprint archived
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Despite rapidly intensifying wildfire seasons in Siberian boreal forests, little is known about long-term relationships between changes in vegetation and shifts in wildfire activity. Using lake sediment proxies, we reconstruct such environmental changes over the past 10,800 years in Central Yakutia. We find that a more open forest may facilitate increased amounts of vegetation burning. The present-day dense larch forest might yet be mediating the current climate-driven wildfire intensification.
Stefan Kruse, Simone M. Stuenzi, Julia Boike, Moritz Langer, Josias Gloy, and Ulrike Herzschuh
Geosci. Model Dev., 15, 2395–2422, https://doi.org/10.5194/gmd-15-2395-2022, https://doi.org/10.5194/gmd-15-2395-2022, 2022
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We coupled established models for boreal forest (LAVESI) and permafrost dynamics (CryoGrid) in Siberia to investigate interactions of the diverse vegetation layer with permafrost soils. Our tests showed improved active layer depth estimations and newly included species growth according to their species-specific limits. We conclude that the new model system can be applied to simulate boreal forest dynamics and transitions under global warming and disturbances, expanding our knowledge.
Anne Dallmeyer, Martin Claussen, Stephan J. Lorenz, Michael Sigl, Matthew Toohey, and Ulrike Herzschuh
Clim. Past, 17, 2481–2513, https://doi.org/10.5194/cp-17-2481-2021, https://doi.org/10.5194/cp-17-2481-2021, 2021
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Using the comprehensive Earth system model, MPI-ESM1.2, we explore the global Holocene vegetation changes and interpret them in terms of the Holocene climate change. The model results reveal that most of the Holocene vegetation transitions seen outside the high northern latitudes can be attributed to modifications in the intensity of the global summer monsoons.
Stuart A. Vyse, Ulrike Herzschuh, Gregor Pfalz, Lyudmila A. Pestryakova, Bernhard Diekmann, Norbert Nowaczyk, and Boris K. Biskaborn
Biogeosciences, 18, 4791–4816, https://doi.org/10.5194/bg-18-4791-2021, https://doi.org/10.5194/bg-18-4791-2021, 2021
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Lakes act as important stores of organic carbon and inorganic sediment material. This study provides a first investigation into carbon and sediment accumulation and storage within an Arctic glacial lake from Far East Russia. It shows that major shifts are related to palaeoclimate variation that affects the development of the lake and its surrounding catchment. Spatial differences to other lake systems from other regions may reflect variability in processes controlled by latitude and altitude.
Xianyong Cao, Fang Tian, Kai Li, Jian Ni, Xiaoshan Yu, Lina Liu, and Nannan Wang
Earth Syst. Sci. Data, 13, 3525–3537, https://doi.org/10.5194/essd-13-3525-2021, https://doi.org/10.5194/essd-13-3525-2021, 2021
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The Tibetan Plateau is quite remote, and it is difficult to collect samples on it; the previous modern pollen data are located on a nearby road, and there is a large geographic gap in the eastern and central Tibetan Plateau. Our novel pollen data can fill the gap and will be valuable in establishing a complete dataset covering the entire Tibetan Plateau, thus helping us to get a comprehensive understanding. In addition, the dataset can also be used to investigate plant species distribution.
Ramesh Glückler, Ulrike Herzschuh, Stefan Kruse, Andrei Andreev, Stuart Andrew Vyse, Bettina Winkler, Boris K. Biskaborn, Luidmila Pestryakova, and Elisabeth Dietze
Biogeosciences, 18, 4185–4209, https://doi.org/10.5194/bg-18-4185-2021, https://doi.org/10.5194/bg-18-4185-2021, 2021
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Data about past fire activity are very sparse in Siberia. This study presents a first high-resolution record of charcoal particles from lake sediments in boreal eastern Siberia. It indicates that current levels of charcoal accumulation are not unprecedented. While a recent increase in reconstructed fire frequency coincides with rising temperatures and increasing human activity, vegetation composition does not seem to be a major driver behind changes in the fire regime in the past two millennia.
Lydia Stolpmann, Caroline Coch, Anne Morgenstern, Julia Boike, Michael Fritz, Ulrike Herzschuh, Kathleen Stoof-Leichsenring, Yury Dvornikov, Birgit Heim, Josefine Lenz, Amy Larsen, Katey Walter Anthony, Benjamin Jones, Karen Frey, and Guido Grosse
Biogeosciences, 18, 3917–3936, https://doi.org/10.5194/bg-18-3917-2021, https://doi.org/10.5194/bg-18-3917-2021, 2021
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Our new database summarizes DOC concentrations of 2167 water samples from 1833 lakes in permafrost regions across the Arctic to provide insights into linkages between DOC and environment. We found increasing lake DOC concentration with decreasing permafrost extent and higher DOC concentrations in boreal permafrost sites compared to tundra sites. Our study shows that DOC concentration depends on the environmental properties of a lake, especially permafrost extent, ecoregion, and vegetation.
Iuliia Shevtsova, Ulrike Herzschuh, Birgit Heim, Luise Schulte, Simone Stünzi, Luidmila A. Pestryakova, Evgeniy S. Zakharov, and Stefan Kruse
Biogeosciences, 18, 3343–3366, https://doi.org/10.5194/bg-18-3343-2021, https://doi.org/10.5194/bg-18-3343-2021, 2021
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In the light of climate changes in subarctic regions, notable general increase in above-ground biomass for the past 15 years (2000 to 2017) was estimated along a tundra–taiga gradient of central Chukotka (Russian Far East). The greatest increase occurred in the northern taiga in the areas of larch closed-canopy forest expansion with Cajander larch as a main contributor. For the estimations, we used field data (taxa-separated plant biomass, 2018) and upscaled it based on Landsat satellite data.
Andrew M. Dolman, Torben Kunz, Jeroen Groeneveld, and Thomas Laepple
Clim. Past, 17, 825–841, https://doi.org/10.5194/cp-17-825-2021, https://doi.org/10.5194/cp-17-825-2021, 2021
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Uncertainties in climate proxy records are temporally autocorrelated. By deriving expressions for the power spectra of errors in proxy records, we can estimate appropriate uncertainties for any timescale, for example, for temporally smoothed records or for time slices. Here we outline and demonstrate this approach for climate proxies recovered from marine sediment cores.
Simone Maria Stuenzi, Julia Boike, William Cable, Ulrike Herzschuh, Stefan Kruse, Luidmila A. Pestryakova, Thomas Schneider von Deimling, Sebastian Westermann, Evgenii S. Zakharov, and Moritz Langer
Biogeosciences, 18, 343–365, https://doi.org/10.5194/bg-18-343-2021, https://doi.org/10.5194/bg-18-343-2021, 2021
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Boreal forests in eastern Siberia are an essential component of global climate patterns. We use a physically based model and field measurements to study the interactions between forests, permanently frozen ground and the atmosphere. We find that forests exert a strong control on the thermal state of permafrost through changing snow cover dynamics and altering the surface energy balance, through absorbing most of the incoming solar radiation and suppressing below-canopy turbulent fluxes.
Mareike Wieczorek and Ulrike Herzschuh
Earth Syst. Sci. Data, 12, 3515–3528, https://doi.org/10.5194/essd-12-3515-2020, https://doi.org/10.5194/essd-12-3515-2020, 2020
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Relative pollen productivity (RPP) estimates are used to estimate vegetation cover from pollen records. This study provides (i) a compilation of northern hemispheric RPP studies, allowing researchers to identify suitable sets for their study region and to identify data gaps for future research, and (ii) taxonomically harmonized, unified RPP sets for China, Europe, North America, and the whole Northern Hemisphere, generated from the available studies.
Basil A. S. Davis, Manuel Chevalier, Philipp Sommer, Vachel A. Carter, Walter Finsinger, Achille Mauri, Leanne N. Phelps, Marco Zanon, Roman Abegglen, Christine M. Åkesson, Francisca Alba-Sánchez, R. Scott Anderson, Tatiana G. Antipina, Juliana R. Atanassova, Ruth Beer, Nina I. Belyanina, Tatiana A. Blyakharchuk, Olga K. Borisova, Elissaveta Bozilova, Galina Bukreeva, M. Jane Bunting, Eleonora Clò, Daniele Colombaroli, Nathalie Combourieu-Nebout, Stéphanie Desprat, Federico Di Rita, Morteza Djamali, Kevin J. Edwards, Patricia L. Fall, Angelica Feurdean, William Fletcher, Assunta Florenzano, Giulia Furlanetto, Emna Gaceur, Arsenii T. Galimov, Mariusz Gałka, Iria García-Moreiras, Thomas Giesecke, Roxana Grindean, Maria A. Guido, Irina G. Gvozdeva, Ulrike Herzschuh, Kari L. Hjelle, Sergey Ivanov, Susanne Jahns, Vlasta Jankovska, Gonzalo Jiménez-Moreno, Monika Karpińska-Kołaczek, Ikuko Kitaba, Piotr Kołaczek, Elena G. Lapteva, Małgorzata Latałowa, Vincent Lebreton, Suzanne Leroy, Michelle Leydet, Darya A. Lopatina, José Antonio López-Sáez, André F. Lotter, Donatella Magri, Elena Marinova, Isabelle Matthias, Anastasia Mavridou, Anna Maria Mercuri, Jose Manuel Mesa-Fernández, Yuri A. Mikishin, Krystyna Milecka, Carlo Montanari, César Morales-Molino, Almut Mrotzek, Castor Muñoz Sobrino, Olga D. Naidina, Takeshi Nakagawa, Anne Birgitte Nielsen, Elena Y. Novenko, Sampson Panajiotidis, Nata K. Panova, Maria Papadopoulou, Heather S. Pardoe, Anna Pędziszewska, Tatiana I. Petrenko, María J. Ramos-Román, Cesare Ravazzi, Manfred Rösch, Natalia Ryabogina, Silvia Sabariego Ruiz, J. Sakari Salonen, Tatyana V. Sapelko, James E. Schofield, Heikki Seppä, Lyudmila Shumilovskikh, Normunds Stivrins, Philipp Stojakowits, Helena Svobodova Svitavska, Joanna Święta-Musznicka, Ioan Tantau, Willy Tinner, Kazimierz Tobolski, Spassimir Tonkov, Margarita Tsakiridou, Verushka Valsecchi, Oksana G. Zanina, and Marcelina Zimny
Earth Syst. Sci. Data, 12, 2423–2445, https://doi.org/10.5194/essd-12-2423-2020, https://doi.org/10.5194/essd-12-2423-2020, 2020
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The Eurasian Modern Pollen Database (EMPD) contains pollen counts and associated metadata for 8134 modern pollen samples from across the Eurasian region. The EMPD is part of, and complementary to, the European Pollen Database (EPD) which contains data on fossil pollen found in Late Quaternary sedimentary archives. The purpose of the EMPD is to provide calibration datasets and other data to support palaeoecological research on past climates and vegetation cover over the Quaternary period.
Heike H. Zimmermann, Kathleen R. Stoof-Leichsenring, Stefan Kruse, Juliane Müller, Ruediger Stein, Ralf Tiedemann, and Ulrike Herzschuh
Ocean Sci., 16, 1017–1032, https://doi.org/10.5194/os-16-1017-2020, https://doi.org/10.5194/os-16-1017-2020, 2020
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This study targets high-resolution, diatom-specific sedimentary ancient DNA using a DNA metabarcoding approach. Diatom DNA has been preserved with substantial taxonomic richness in the eastern Fram Strait over the past 30 000 years with taxonomic composition being dominated by cold-water and sea-ice-associated diatoms. Taxonomic reorganisations took place after the Last Glacial Maximum and after the Younger Dryas. Peak proportions of pennate diatoms might indicate past sea-ice presence.
Cited articles
Appleby, P. G. and Oldfield, F.: The calculation of lead-210 dates assuming
a constant rate of supply of unsupported 210Pb to the sediment, Catena,
5, 1–8, https://doi.org/10.1016/S0341-8162(78)80002-2, 1978.
Bardossy, G. and Fodor, J.: Evaluation of Uncertainties and Risks in
Geology: New Mathematical Approaches for Their Handling, Springer Science
& Business Media, 250 pp., ISBN-13: 978-3-540-20622-4 (ISBN-10: 3-540-20622-1), 2004.
Birks, H. J. B., Lotter, A. F., Juggins, S., and Smol, J. P.: Tracking
Environmental Change Using Lake Sediments: Data Handling and Numerical
Techniques, Springer Science & Business Media, 751 pp., https://doi.org/10.1007/978-94-007-2745-8, 2012.
Blaauw, M. and Christen, J. A.: Flexible paleoclimate age-depth models using
an autoregressive gamma process, Bayesian Anal., 6, 457–474,
https://doi.org/10.1214/11-BA618, 2011.
Blaauw, M., Christen, J. A., Mauquoy, D., van der Plicht, J., and Bennett,
K. D.: Testing the timing of radiocarbon-dated events between proxy
archives, Holocene, 17, 283–288, https://doi.org/10.1177/0959683607075857,
2007.
Blaauw, M., Christen, J. A., Bennett, K. D., and Reimer, P. J.: Double the
dates and go for Bayes – Impacts of model choice, dating density and
quality on chronologies, Quaternary Sci. Rev., 188, 58–66,
https://doi.org/10.1016/j.quascirev.2018.03.032, 2018.
Blois, J. L., Williams, J. W. J., Grimm, E. C., Jackson, S. T., and Graham,
R. W.: A methodological framework for assessing and reducing temporal
uncertainty in paleovegetation mapping from late-Quaternary pollen records,
Quaternary Sci. Rev., 30, 1926–1939,
https://doi.org/10.1016/j.quascirev.2011.04.017, 2011.
Brewer, S., Giesecke, T., Davis, B. A. S., Finsinger, W., Wolters, S.,
Binney, H., Beaulieu, J.-L. de, Fyfe, R., Gil-Romera, G., Kühl, N.,
Kuneš, P., Leydet, M., and Bradshaw, R. H.: Late-glacial and Holocene
European pollen data, J. Maps, 13, 921–928,
https://doi.org/10.1080/17445647.2016.1197613, 2017.
Brown, K. J. and Hebda, R. J.: Coastal rainforest connections disclosed
through a Late Quaternary vegetation, climate, and fire history
investigation from the Mountain Hemlock Zone on southern Vancouver Island,
British Colombia, Canada, Rev. Palaeobot. Palyno., 123, 247–269,
https://doi.org/10.1016/S0034-6667(02)00195-1, 2003.
Cao, X., Ni, J., Herzschuh, U., Wang, Y., and Zhao, Y.: A late Quaternary
pollen dataset from eastern continental Asia for vegetation and climate
reconstructions: Set up and evaluation, Rev. Palaeobot. Palyno., 194, 21–37, https://doi.org/10.1016/j.revpalbo.2013.02.003, 2013.
Cao, X., Tian, F., Andreev, A., Anderson, P. M., Lozhkin, A. V., Bezrukova, E., Ni, J., Rudaya, N., Stobbe, A., Wieczorek, M., and Herzschuh, U.: A taxonomically harmonized and temporally standardized fossil pollen dataset from Siberia covering the last 40 kyr, Earth Syst. Sci. Data, 12, 119–135, https://doi.org/10.5194/essd-12-119-2020, 2020.
Christie, M.: Radiocarbon dating, Wikij. Sci., 1, 1–17, https://doi.org/10.15347/WJS/2018.006, 2018.
Clark, P. U., Dyke, A. S., Shakun, J. D., Carlson, A. E., Clark, J.,
Wohlfarth, B., Mitrovica, J. X., Hostetler, S. W., and McCabe, A. M.: The
Last Glacial Maximum, Science, 325, 710–714,
https://doi.org/10.1126/science.1172873, 2009.
Clark, P. U., Shakun, J. D., Baker, P. A., Bartlein, P. J., Brewer, S.,
Brook, E., Carlson, A. E., Cheng, H., Kaufman, D. S., Liu, Z., Marchitto, T.
M., Mix, A. C., Morrill, C., Otto-Bliesner, B. L., Pahnke, K., Russell, J.
M., Whitlock, C., Adkins, J. F., Blois, J. L., Clark, J., Colman, S. M.,
Curry, W. B., Flower, B. P., He, F., Johnson, T. C., Lynch-Stieglitz, J.,
Markgraf, V., McManus, J., Mitrovica, J. X., Moreno, P. I., and Williams, J.
W.: Global climate evolution during the last deglaciation, P. Natl. Acad. Sci. USA, 109, E1134–E1142, https://doi.org/10.1073/pnas.1116619109, 2012.
Cuney, M.: Nuclear Geology, in: Encyclopedia of Geology, 2nd edn., edited by: Alderton, D. and Elias, S. A., Academic Press, Oxford, 723–744,
https://doi.org/10.1016/B978-0-08-102908-4.00024-2, 2021.
Davydova, N. and Servant-Vildary, S.: Late Pleistocene and Holocene history
of the lakes in the Kola Peninsula, Karelia and the North-Western part of
the East European plain, Quaternary Sci. Rev., 15, 997–1012,
https://doi.org/10.1016/S0277-3791(96)00029-7, 1996.
Fiałkiewicz-Kozieł, B., Kołaczek, P., Piotrowska, N., Michczyński, A., Łokas, E., Wachniew, P., Woszczyk, M., and Sensuła, B.: High-Resolution Age-Depth Model of a Peat Bog in Poland as an Important Basis for Paleoenvironmental Studies, Radiocarbon, 56, 109–125, https://doi.org/10.2458/56.16467, 2014.
Flantua, S. G. A., Blaauw, M., and Hooghiemstra, H.: Geochronological database and classification system for age uncertainties in Neotropical pollen records, Clim. Past, 12, 387–414, https://doi.org/10.5194/cp-12-387-2016, 2016.
Fyfe, R. M., de Beaulieu, J. L., Binney, H., Bradshaw, R. H. W., Brewer, S.,
Le Flao, A., Finsinger, W., Gaillard, M. J., Giesecke, T., Gil-Romera, G.,
Grimm, E. C., Huntley, B., Kunes, P., Kühl, N., Leydet, M., Lotter, A.
F., Tarasov, P. E., and Tonkov, S.: The European Pollen Database: past
efforts and current activities, Veg. Hist. Archaeobot., 18, 417–424,
https://doi.org/10.1007/s00334-009-0215-9, 2009.
Gaillard, M.-J., Sugita, S., Mazier, F., Trondman, A.-K., Broström, A., Hickler, T., Kaplan, J. O., Kjellström, E., Kokfelt, U., Kuneš, P., Lemmen, C., Miller, P., Olofsson, J., Poska, A., Rundgren, M., Smith, B., Strandberg, G., Fyfe, R., Nielsen, A. B., Alenius, T., Balakauskas, L., Barnekow, L., Birks, H. J. B., Bjune, A., Björkman, L., Giesecke, T., Hjelle, K., Kalnina, L., Kangur, M., van der Knaap, W. O., Koff, T., Lagerås, P., Latałowa, M., Leydet, M., Lechterbeck, J., Lindbladh, M., Odgaard, B., Peglar, S., Segerström, U., von Stedingk, H., and Seppä, H.: Holocene land-cover reconstructions for studies on land cover-climate feedbacks, Clim. Past, 6, 483–499, https://doi.org/10.5194/cp-6-483-2010, 2010.
Gajewski, K.: The Global Pollen Database in biogeographical and
palaeoclimatic studies, Prog. Phys. Geog., 32, 379–402,
https://doi.org/10.1177/0309133308096029, 2008.
Gajewski, K., Mott, R. J., Ritchie, J. C., and Hadden, K.: Holocene
vegetation history of Banks Island, Northwest Territories, Canada, Can. J.
Botany, 78, 430–436, https://doi.org/10.1139/b00-018, 2000.
Giesecke, T., Bennett, K. D., Birks, H. J. B., Bjune, A. E., Bozilova, E.,
Feurdean, A., Finsinger, W., Froyd, C., Pokorný, P., Rösch, M.,
Seppä, H., Tonkov, S., Valsecchi, V., and Wolters, S.: The pace of
Holocene vegetation change – testing for synchronous developments, Quaternary Sci. Rev., 30, 2805–2814, https://doi.org/10.1016/j.quascirev.2011.06.014,
2011.
Giesecke, T., Davis, B., Brewer, S., Finsinger, W., Wolters, S., Blaauw, M.,
de Beaulieu, J.-L., Binney, H., Fyfe, R. M., Gaillard, M.-J., Gil-Romera,
G., van der Knaap, W. O., Kuneš, P., Kühl, N., van Leeuwen, J. F.
N., Leydet, M., Lotter, A. F., Ortu, E., Semmler, M., and Bradshaw, R. H.
W.: Towards mapping the late Quaternary vegetation change of Europe, Veg.
Hist. Archaeobot., 23, 75–86, https://doi.org/10.1007/s00334-012-0390-y, 2014.
Goring, S., Williams, J. W., Blois, J. L., Jackson, S. T., Paciorek, C. J.,
Booth, R. K., Marlon, J. R., Blaauw, M., and Christen, J. A.: Deposition
times in the northeastern United States during the Holocene: establishing
valid priors for Bayesian age models, Quaternary Sci. Rev., 48, 54–60,
https://doi.org/10.1016/j.quascirev.2012.05.019, 2012.
Grigg, L. D. and Whitlock, C.: Patterns and causes of millennial-scale
climate change in the Pacific Northwest during Marine Isotope Stages 2 and
3, Quaternary Sci. Rev., 21, 2067–2083, https://doi.org/10.1016/S0277-3791(02)00017-3, 2002.
Hajdas, I.: 14.3 – Radiocarbon: Calibration to Absolute Time Scale, in:
Treatise on Geochemistry (Second Edition), edited by: Holland, H. D. and
Turekian, K. K., Elsevier, Oxford, 37–43,
https://doi.org/10.1016/B978-0-08-095975-7.01204-3, 2014.
Hajdas, I. and Michczyński, A.: Age-Depth Model of Lake Soppensee
(Switzerland) Based on the High-Resolution 14C Chronology Compared with Varve Chronology, Radiocarbon, 52, 1027–1040,
https://doi.org/10.1017/S0033822200046117, 2010.
Haslett, J. and Parnell, A.: A simple monotone process with application to
radiocarbon-dated depth chronologies, J. R. Stat. Soc. C-Appl., 57, 399–418, https://doi.org/10.1111/j.1467-9876.2008.00623.x, 2008.
Heaton, T. J., Köhler, P., Butzin, M., Bard, E., Reimer, R. W., Austin,
W. E. N., Ramsey, C. B., Grootes, P. M., Hughen, K. A., Kromer, B., Reimer,
P. J., Adkins, J., Burke, A., Cook, M. S., Olsen, J., and Skinner, L. C.:
Marine20–the marine radiocarbon age calibration curve (0–55,000 cal BP),
Radiocarbon, 62, 779–820, https://doi.org/10.1017/RDC.2020.68, 2020.
Heaton, T. J., Bard, E., Bronk Ramsey, C., Butzin, M., Köhler, P.,
Muscheler, R., Reimer, P. J., and Wacker, L.: Radiocarbon: A key tracer for
studying Earth's dynamo, climate system, carbon cycle, and Sun, Science,
374, eabd7096, https://doi.org/10.1126/science.abd7096, 2021.
Herzschuh, U., Cao, X., Laepple, T., Dallmeyer, A., Telford, R. J., Ni, J.,
Chen, F., Kong, Z., Liu, G., Liu, K.-B., Liu, X., Stebich, M., Tang, L.,
Tian, F., Wang, Y., Wischnewski, J., Xu, Q., Yan, S., Yang, Z., Yu, G.,
Zhang, Y., Zhao, Y., and Zheng, Z.: Position and orientation of the westerly
jet determined Holocene rainfall patterns in China, Nat. Commun., 10, 2376,
https://doi.org/10.1038/s41467-019-09866-8, 2019.
Hogg, A. G., Heaton, T. J., Hua, Q., Palmer, J. G., Turney, C. S., Southon,
J., Bayliss, A., Blackwell, P. G., Boswijk, G., Ramsey, C. B., Pearson, C.,
Petchey, F., Reimer, P., Reimer, R., and Wacker, L.: SHCal20 Southern
Hemisphere calibration, 0–55,000 years cal BP, Radiocarbon, 62, 759–778,
https://doi.org/10.1017/RDC.2020.59, 2020.
Hou, J., William, J. D. A., and Liu, Z.: Geochronological limitations for
interpreting the paleoclimatic history of the Tibetan Plateau, Quaternary Sciences, 32, 441–453, https://doi.org/10.3969/j.issn.1001-7410.2012.03.10, 2012 (in
Chinese with English abstract).
Hua, Q., Barbetti, M., and Rakowski, A. Z.: Atmospheric radiocarbon for the
period 1950–2010, Radiocarbon, 55, 2059–2072,
https://doi.org/10.2458/azu_js_rc.v55i2.16177, 2013.
Jennerjahn, T. C., Ittekkot, V., Arz, H. W., Behling, H., Pätzold, J.,
and Wefer, G.: Asynchronous Terrestrial and Marine Signals of Climate Change
During Heinrich Events, Science, 306, 2236–2239,
https://doi.org/10.1126/science.1102490, 2004.
Lane, C. S., Blockley, S. P. E., Mangerud, J., Smith, V. C., Lohne, Ø.
S., Tomlinson, E. L., Matthews, I. P., and Lotter, A. F.: Was the 12.1 ka
Icelandic Vedde Ash one of a kind?, Quaternary Sci. Rev., 33, 87–99,
https://doi.org/10.1016/j.quascirev.2011.11.011, 2012.
Li, C., Postl, A., Boehmer, T., Dolman, A. M., and Herzschuh, U.: Harmonized
chronologies of a global late Quaternary pollen dataset (LegacyAge 1.0),
PANGAEA [data set], https://doi.org/10.1594/PANGAEA.933132, 2021.
Li, C., Postl, A., Boehmer, T., Dolman, A. M., and Herzschuh, U.: Harmonized
chronologies of a global late Quaternary pollen dataset (LegacyAge 1.0) in
R, Zenodo [data set], https://doi.org/10.5281/zenodo.5815192, 2022.
Lowe, D. J.: Tephrochronology and its application: A review, Quat.
Geochronol., 6, 107–153, https://doi.org/10.1016/j.quageo.2010.08.003, 2011.
Marsicek, J., Shuman, B. N., Bartlein, P. J., Shafer, S. L., and Brewer, S.:
Reconciling divergent trends and millennial variations in Holocene
temperatures, Nature, 554, 92–96, https://doi.org/10.1038/nature25464, 2018.
Mauri, A., Davis, B. A. S., Collins, P. M., and Kaplan, J. O.: The climate of
Europe during the Holocene: a gridded pollen-based reconstruction and its
multi-proxy evaluation, Quaternary Sci. Rev., 112, 109–127,
https://doi.org/10.1016/j.quascirev.2015.01.013, 2015.
Mottl, O., Flantua, S. G. A., Bhatta, K. P., Felde, V. A., Giesecke, T.,
Goring, S., Grimm, E. C., Haberle, S., Hooghiemstra, H., Ivory, S.,
Kuneš, P., Wolters, S., Seddon, A. W. R., and Williams, J. W.: Global
acceleration in rates of vegetation change over the past 18,000 years,
Science, 372, 860–864, https://doi.org/10.1126/science.abg1685, 2021.
Niemann, H. and Behling, H.: Late Quaternary vegetation, climate and fire
dynamics inferred from the El Tiro record in the southeastern Ecuadorian
Andes, J. Quaternary Sci., 23, 203–212, https://doi.org/10.1002/jqs.1134, 2008.
Ojala, A. E. K., Francus, P., Zolitschka, B., Besonen, M., and Lamoureux, S.
F.: Characteristics of sedimentary varve chronologies – A review, Quaternary
Sci. Rev., 43, 45–60, https://doi.org/10.1016/j.quascirev.2012.04.006, 2012.
Philippsen, B.: The freshwater reservoir effect in radiocarbon dating,
Heritage Science, 1, 24, https://doi.org/10.1186/2050-7445-1-24, 2013.
Philippsen, B. and Heinemeier, J.: Freshwater reservoir effect variability
in northern Germany, Radiocarbon, 55, 1085–1101,
https://doi.org/10.1017/S0033822200048001, 2013.
R Core Team: R: A language and environment for statistical computing, R
Foundation for Statistical Computing, Vienna, Austria,
https://www.r-project.org/ (last access: 23 December 2021), 2020.
Ramisch, A., Brauser, A., Dorn, M., Blanchet, C., Brademann, B., Köppl, M., Mingram, J., Neugebauer, I., Nowaczyk, N., Ott, F., Pinkerneil, S., Plessen, B., Schwab, M. J., Tjallingii, R., and Brauer, A.: VARDA (VARved sediments DAtabase) – providing and connecting proxy data from annually laminated lake sediments, Earth Syst. Sci. Data, 12, 2311–2332, https://doi.org/10.5194/essd-12-2311-2020, 2020.
Ramsey, C. B.: Deposition models for chronological records, Quaternary Sci. Rev., 27, 42–60, https://doi.org/10.1016/j.quascirev.2007.01.019, 2008.
Rasmussen, S. O., Bigler, M., Blockley, S. P., Blunier, T., Buchardt, S. L.,
Clausen, H. B., Cvijanovic, I., Dahl-Jensen, D., Johnsen, S. J., Fischer,
H., Gkinis, V., Guillevic, M., Hoek, W. Z., Lowe, J. J., Pedro, J. B., Popp,
T., Seierstad, I. K., Steffensen, J. P., Svensson, A. M., Vallelonga, P.,
Vinther, B. M., Walker, M. J. C., Wheatley, J. J., and Winstrup, M.: A
stratigraphic framework for abrupt climatic changes during the Last Glacial
period based on three synchronized Greenland ice-core records: refining and
extending the INTIMATE event stratigraphy, Quaternary Sci. Rev., 106, 14–28,
https://doi.org/10.1016/j.quascirev.2014.09.007, 2014.
Reimer, P. J., Austin, W. E. N., Bard, E., Bayliss, A., Blackwell, P. G.,
Ramsey, C. B., Butzin, M., Cheng, H., Edwards, R. L., Friedrich, M.,
Grootes, P. M., Guilderson, T. P., Hajdas, I., Heaton, T. J., Hogg, A. G.,
Hughen, K. A., Kromer, B., Manning, S. W., Muscheler, R., Palmer, J. G.,
Pearson, C., van der Plicht, J., Reimer, R. W., Richards, D. A., Scott, E.
M., Southon, J. R., Turney, C. S. M., Wacker, L., Adolphi, F., Büntgen,
U., Capano, M., Fahrni, S. M., Fogtmann-Schulz, A., Friedrich, R.,
Köhler, P., Kudsk, S., Miyake, F., Olsen, J., Reinig, F., Sakamoto, M.,
Sookdeo, A., and Talamo, S.: The IntCal20 Northern Hemisphere radiocarbon
age calibration curve (0–55 cal kBP), Radiocarbon, 62, 725–757,
https://doi.org/10.1017/RDC.2020.41, 2020.
Roberts, N.: The Holocene: An Environmental History, 3rd edn., John Wiley & Sons, 415 pp., ISBN-13: 978-1-4051-5521-2 (ISBN-10: 1-4051-5521-3), 2014.
Sánchez Goñi, M. F., Desprat, S., Daniau, A.-L., Bassinot, F. C., Polanco-Martínez, J. M., Harrison, S. P., Allen, J. R. M., Anderson, R. S., Behling, H., Bonnefille, R., Burjachs, F., Carrión, J. S., Cheddadi, R., Clark, J. S., Combourieu-Nebout, N., Mustaphi, Colin. J. Courtney, Debusk, G. H., Dupont, L. M., Finch, J. M., Fletcher, W. J., Giardini, M., González, C., Gosling, W. D., Grigg, L. D., Grimm, E. C., Hayashi, R., Helmens, K., Heusser, L. E., Hill, T., Hope, G., Huntley, B., Igarashi, Y., Irino, T., Jacobs, B., Jiménez-Moreno, G., Kawai, S., Kershaw, A. P., Kumon, F., Lawson, I. T., Ledru, M.-P., Lézine, A.-M., Liew, P. M., Magri, D., Marchant, R., Margari, V., Mayle, F. E., McKenzie, G. M., Moss, P., Müller, S., Müller, U. C., Naughton, F., Newnham, R. M., Oba, T., Pérez-Obiol, R., Pini, R., Ravazzi, C., Roucoux, K. H., Rucina, S. M., Scott, L., Takahara, H., Tzedakis, P. C., Urrego, D. H., van Geel, B., Valencia, B. G., Vandergoes, M. J., Vincens, A., Whitlock, C. L., Willard, D. A., and Yamamoto, M.: The ACER pollen and charcoal database: a global resource to document vegetation and fire response to abrupt climate changes during the last glacial period, Earth Syst. Sci. Data, 9, 679–695, https://doi.org/10.5194/essd-9-679-2017, 2017.
Trachsel, M. and Telford, R. J.: All age-depth models are wrong, but are
getting better, Holocene, 27, 860–869, https://doi.org/10.1177/0959683616675939, 2017.
Trondman, A.-K., Gaillard, M.-J., Mazier, F., Sugita, S., Fyfe, R., Nielsen,
A. B., Twiddle, C., Barratt, P., Birks, H. J. B., Bjune, A. E.,
Björkman, L., Broström, A., Caseldine, C., David, R., Dodson, J.,
Dörfler, W., Fischer, E., Geel, B. van, Giesecke, T., Hultberg, T.,
Kalnina, L., Kangur, M., Knaap, P. van der, Koff, T., Kuneš, P.,
Lagerås, P., Latałowa, M., Lechterbeck, J., Leroyer, C., Leydet, M.,
Lindbladh, M., Marquer, L., Mitchell, F. J. G., Odgaard, B. V., Peglar, S.
M., Persson, T., Poska, A., Rösch, M., Seppä, H., Veski, S., and
Wick, L.: Pollen-based quantitative reconstructions of Holocene regional
vegetation cover (plant-functional types and land-cover types) in Europe
suitable for climate modelling, Glob. Change Biol., 21, 676–697,
https://doi.org/10.1111/gcb.12737, 2015.
Wallinga, J. and Cunningham, A. C.: Luminescence Dating, Uncertainties, and Age Range, in: Encyclopedia of Scientific Dating Methods, edited by: Rink, W. J. and Thompson, J., Springer Netherlands, Dordrecht, 1–9, https://doi.org/10.1007/978-94-007-6326-5_197-1, 2014.
Wang, J., Zhu, L., Wang, Y., Peng, P., Ma, Q., Haberzettl, T., Kasper, T.,
Matsunaka, T., and Nakamura, T.: Variability of the 14C reservoir
effects in Lake Tangra Yumco, Central Tibet (China), determined from recent
sedimentation rates and dating of plant fossils, Quatern. Int., 430, 3–11,
https://doi.org/10.1016/j.quaint.2015.10.084, 2017.
Wang, Y., Goring, S. J., and McGuire, J. L.: Bayesian ages for pollen records
since the last glaciation in North America, Sci. Data, 6, 176,
https://doi.org/10.1038/s41597-019-0182-7, 2019.
Williams, J. W., Grimm, E. C., Blois, J. L., Charles, D. F., Davis, E. B.,
Goring, S. J., Graham, R. W., Smith, A. J., Anderson, M., Arroyo-Cabrales,
J., Ashworth, A. C., Betancourt, J. L., Bills, B. W., Booth, R. K.,
Buckland, P. I., Curry, B. B., Giesecke, T., Jackson, S. T., Latorre, C.,
Nichols, J., Purdum, T., Roth, R. E., Stryker, M., and Takahara, H.: The
Neotoma Paleoecology Database, a multiproxy, international,
community-curated data resource, Quaternary Res., 89, 156–177,
https://doi.org/10.1017/qua.2017.105, 2018.
Zolitschka, B., Francus, P., Ojala, A. E. K., and Schimmelmann, A.: Varves
in lake sediments – a review, Quaternary Sci. Rev., 117, 1–41,
https://doi.org/10.1016/j.quascirev.2015.03.019, 2015.
Short summary
Here we present a global chronology framework of 2831 palynological records, including globally harmonized chronologies covering up to 273 000 years. A comparison with the original chronologies reveals a major improvement according to our assessment. Our chronology framework and revised chronologies will interest a broad geoscientific community, as it provides the opportunity to make use in synthesis studies of, for example, pollen-based vegetation and climate change.
Here we present a global chronology framework of 2831 palynological records, including globally...
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