Search

Your search keyword '"Scott Anderson R."' showing total 30 results
Start Over Author "Scott Anderson R."
30 results on '"Scott Anderson R."'

1. Octree Representation Improves Data Fidelity of Cardiac CT Images and Convolutional Neural Network Semantic Segmentation of Left Atrial and Ventricular Chambers

Author

Gupta, Kunal, Sekhar, Nitesh, Vigneault, Davis M, Scott, Anderson R, Colvert, Brendan, Craine, Amanda, Raghavan, Adhithi, and Contijoch, Francisco J

Subjects
Medical and Biological Physics, Biomedical and Clinical Sciences, Physical Sciences, Networking and Information Technology R&D (NITRD), Neurosciences, Cardiovascular, Biomedical Imaging, Bioengineering, Machine Learning and Artificial Intelligence, CT, Cardiac, Segmentation, Supervised Learning, Convolutional Neural Network, Deep Learning Algorithms, Machine Learning Algorithms
Abstract

PurposeTo assess whether octree representation and octree-based convolutional neural networks (CNNs) improve segmentation accuracy of three-dimensional images.Materials and methodsCardiac CT angiographic examinations from 100 patients (mean age, 67 years ± 17 [standard deviation]; 60 men) performed between June 2012 and June 2018 with semantic segmentations of the left ventricular (LV) and left atrial (LA) blood pools at the end-diastolic and end-systolic cardiac phases were retrospectively evaluated. Image quality (root mean square error [RMSE]) and segmentation fidelity (global Dice and border Dice coefficients) metrics of the octree representation were compared with spatial downsampling for a range of memory footprints. Fivefold cross-validation was used to train an octree-based CNN and CNNs with spatial downsampling at four levels of image compression or spatial downsampling. The semantic segmentation performance of octree-based CNN (OctNet) was compared with the performance of U-Nets with spatial downsampling.ResultsOctrees provided high image and segmentation fidelity (median RMSE, 1.34 HU; LV Dice coefficient, 0.970; LV border Dice coefficient, 0.843) with a reduced memory footprint (87.5% reduction). Spatial downsampling to the same memory footprint had lower data fidelity (median RMSE, 12.96 HU; LV Dice coefficient, 0.852; LV border Dice coefficient, 0.310). OctNet segmentation improved the border segmentation Dice coefficient (LV, 0.612; LA, 0.636) compared with the highest performance among U-Nets with spatial downsampling (Dice coefficients: LV, 0.579; LA, 0.592).ConclusionOctree-based representations can reduce the memory footprint and improve segmentation border accuracy.Keywords CT, Cardiac, Segmentation, Supervised Learning, Convolutional Neural Network (CNN), Deep Learning Algorithms, Machine Learning Algorithms© RSNA, 2021.

Published
2021

6. Summary of the Snowmastodon Project Special Volume. A high-elevation, multi-proxy biotic and environmental record of MIS 6-4 from the Ziegler Reservoir fossil site, Snowmass Village, Colorado, USA

Author

Miller, IM, Pigati, JS, Scott Anderson, R, Johnson, KR, Mahan, SA, Ager, TA, Baker, RG, Blaauw, M, Bright, J, Brown, PM, Bryant, B, Calamari, ZT, Carrara, PE, Cherney, MD, Demboski, JR, Elias, SA, Fisher, DC, Gray, HJ, Haskett, DR, Honke, JS, Jackson, ST, Jiménez-Moreno, G, Kline, D, Leonard, EM, Lifton, NA, Lucking, C, Gregory McDonald, H, Miller, DM, Muhs, DR, Nash, SE, Newton, C, Paces, JB, Petrie, L, Plummer, MA, Porinchu, DF, Rountrey, AN, Scott, E, Sertich, JJW, Sharpe, SE, Skipp, GL, Strickland, LE, Stucky, RK, Thompson, RS, and Wilson, J

Abstract

© 2014 University of Washington. In North America, terrestrial records of biodiversity and climate change that span Marine Oxygen Isotope Stage (MIS) 5 are rare. Where found, they provide insight into how the coupling of the ocean-atmosphere system is manifested in biotic and environmental records and how the biosphere responds to climate change. In 2010-2011, construction at Ziegler Reservoir near Snowmass Village, Colorado (USA) revealed a nearly continuous, lacustrine/wetland sedimentary sequence that preserved evidence of past plant communities between ~. 140 and 55. ka, including all of MIS 5. At an elevation of 2705. m, the Ziegler Reservoir fossil site also contained thousands of well-preserved bones of late Pleistocene megafauna, including mastodons, mammoths, ground sloths, horses, camels, deer, bison, black bear, coyotes, and bighorn sheep. In addition, the site contained more than 26,000 bones from at least 30 species of small animals including salamanders, otters, muskrats, minks, rabbits, beavers, frogs, lizards, snakes, fish, and birds. The combination of macro- and micro-vertebrates, invertebrates, terrestrial and aquatic plant macrofossils, a detailed pollen record, and a robust, directly dated stratigraphic framework shows that high-elevation ecosystems in the Rocky Mountains of Colorado are climatically sensitive and varied dramatically throughout MIS 5.

Published
2014

8. Testing the Effect of Relative Pollen Productivity on the REVEALS Model : A Validated Reconstruction of Europe-Wide Holocene Vegetation

Author

Serge, M. A., Mazier, F., Fyfe, R., Gaillard, Marie-José, Klein, T., Lagnoux, A., Galop, D., Githumbi, Esther, Mindrescu, M., Nielsen, A. B., Trondman, Anna-Kari, Poska, A., Sugita, S., Woodbridge, J., Abel-Schaad, D., Åkesson, C., Alenius, T., Ammann, B., Andersen, S. T., Scott Anderson, R., Andric, M., Balakauskas, L., Barnekow, L., Batalova, V., Bergman, J., Birks, H. John B., Björkman, L., Bjune, A. E., Borisova, O., Broothaerts, N., Carrion, J., Caseldine, C., Christiansen, J., Cui, Q., Curras, A., Czerwinski, S., David, R., Davies, A. L., De Jong, R., Di Rita, F., Dietre, B., Doerfler, W., Doyen, E., Edwards, K. J., Ejarque, A., Endtmann, E., Etienne, D., Faure, E., Feeser, I., Feurdean, A., Fischer, E., Fletcher, W., Franco-Mugica, F., Fredh, E. D., Froyd, C., Garces-Pastor, S., Garcia-Moreiras, I., Gauthier, E., Gil-Romera, G., Gonzalez-Samperiz, P., Grant, M. J., Grindean, R., Haas, J. N., Hannon, G., Heather, A. -J, Heikkilae, M., Hjelle, K., Jahns, S., Jasiunas, N., Jimenez-Moreno, G., Jouffroy-Bapicot, I., Kabailiene, M., Kamerling, I. M., Kangur, M., Karpinska-Kolaczek, M., Kasianova, A., Kolaczek, P., Lageras, P., Latalowa, M., Lechterbeck, J., Leroyer, C., Leydet, M., Lindbladh, M., Lisitsyna, O., Lopez-Saez, J. -A, Lowe, John, Luelmo-Lautenschlaeger, R., Lukanina, E., Macijauskaite, L., Magri, D., Marguerie, D., Marquer, L., Martinez-Cortizas, A., Mehl, I., Mesa-Fernandez, J. M., Mighall, T., Miola, A., Miras, Y., Morales-Molino, C., Mrotzek, A., Sobrino, C. Munoz, Odgaard, B., Ozola, I., Perez-Diaz, S., Perez-Obiol, R. P., Poggi, C., Rego, P. Ramil, Ramos-Roman, M. J., Rasmussen, P., Reille, M., Roesch, M., Ruffaldi, P., Goni, M. Sanchez, Savukyniene, N., Schroeder, T., Schult, M., Segerström, U., Seppae, H., Vives, G. Servera, Shumilovskikh, L., Smettan, H. W., Stancikaite, M., Stevenson, A. C., Stivrins, N., Tantau, I., Theuerkauf, M., Tonkov, S., van der Knaap, W. O., van Leeuwen, J. F. N., Vecmane, E., Verstraeten, G., Veski, S., Voigt, R., Von Stedingk, H., Waller, M. P., Wiethold, J., Willis, K. J., Wolters, S., Zernitskaya, V. P., Serge, M. A., Mazier, F., Fyfe, R., Gaillard, Marie-José, Klein, T., Lagnoux, A., Galop, D., Githumbi, Esther, Mindrescu, M., Nielsen, A. B., Trondman, Anna-Kari, Poska, A., Sugita, S., Woodbridge, J., Abel-Schaad, D., Åkesson, C., Alenius, T., Ammann, B., Andersen, S. T., Scott Anderson, R., Andric, M., Balakauskas, L., Barnekow, L., Batalova, V., Bergman, J., Birks, H. John B., Björkman, L., Bjune, A. E., Borisova, O., Broothaerts, N., Carrion, J., Caseldine, C., Christiansen, J., Cui, Q., Curras, A., Czerwinski, S., David, R., Davies, A. L., De Jong, R., Di Rita, F., Dietre, B., Doerfler, W., Doyen, E., Edwards, K. J., Ejarque, A., Endtmann, E., Etienne, D., Faure, E., Feeser, I., Feurdean, A., Fischer, E., Fletcher, W., Franco-Mugica, F., Fredh, E. D., Froyd, C., Garces-Pastor, S., Garcia-Moreiras, I., Gauthier, E., Gil-Romera, G., Gonzalez-Samperiz, P., Grant, M. J., Grindean, R., Haas, J. N., Hannon, G., Heather, A. -J, Heikkilae, M., Hjelle, K., Jahns, S., Jasiunas, N., Jimenez-Moreno, G., Jouffroy-Bapicot, I., Kabailiene, M., Kamerling, I. M., Kangur, M., Karpinska-Kolaczek, M., Kasianova, A., Kolaczek, P., Lageras, P., Latalowa, M., Lechterbeck, J., Leroyer, C., Leydet, M., Lindbladh, M., Lisitsyna, O., Lopez-Saez, J. -A, Lowe, John, Luelmo-Lautenschlaeger, R., Lukanina, E., Macijauskaite, L., Magri, D., Marguerie, D., Marquer, L., Martinez-Cortizas, A., Mehl, I., Mesa-Fernandez, J. M., Mighall, T., Miola, A., Miras, Y., Morales-Molino, C., Mrotzek, A., Sobrino, C. Munoz, Odgaard, B., Ozola, I., Perez-Diaz, S., Perez-Obiol, R. P., Poggi, C., Rego, P. Ramil, Ramos-Roman, M. J., Rasmussen, P., Reille, M., Roesch, M., Ruffaldi, P., Goni, M. Sanchez, Savukyniene, N., Schroeder, T., Schult, M., Segerström, U., Seppae, H., Vives, G. Servera, Shumilovskikh, L., Smettan, H. W., Stancikaite, M., Stevenson, A. C., Stivrins, N., Tantau, I., Theuerkauf, M., Tonkov, S., van der Knaap, W. O., van Leeuwen, J. F. N., Vecmane, E., Verstraeten, G., Veski, S., Voigt, R., Von Stedingk, H., Waller, M. P., Wiethold, J., Willis, K. J., Wolters, S., and Zernitskaya, V. P.

Abstract

Reliable quantitative vegetation reconstructions for Europe during the Holocene are crucial to improving our understanding of landscape dynamics, making it possible to assess the past effects of environmental variables and land-use change on ecosystems and biodiversity, and mitigating their effects in the future. We present here the most spatially extensive and temporally continuous pollen-based reconstructions of plant cover in Europe (at a spatial resolution of 1 degrees x 1 degrees) over the Holocene (last 11.7 ka BP) using the 'Regional Estimates of VEgetation Abundance from Large Sites' (REVEALS) model. This study has three main aims. First, to present the most accurate and reliable generation of REVEALS reconstructions across Europe so far. This has been achieved by including a larger number of pollen records compared to former analyses, in particular from the Mediterranean area. Second, to discuss methodological issues in the quantification of past land cover by using alternative datasets of relative pollen productivities (RPPs), one of the key input parameters of REVEALS, to test model sensitivity. Finally, to validate our reconstructions with the global forest change dataset. The results suggest that the RPPs.st1 (31 taxa) dataset is best suited to producing regional vegetation cover estimates for Europe. These reconstructions offer a long-term perspective providing unique possibilities to explore spatial-temporal changes in past land cover and biodiversity.

Published
2023
Full Text
View/download PDF

10. The Eurasian Modern Pollen Database (EMPD), version 2

Author

Davis, B, Chevalier, M, Sommer, P, Carter, V, Finsinger, W, Mauri, A, Phelps, L, Zanon, M, Abegglen, R, Akesson, C, Alba-Sanchez, F, Scott Anderson, R, Antipina, T, Atanassova, J, Beer, R, Belyanina, N, Blyakharchuk, T, Borisova, O, Bozilova, E, Bukreeva, G, Jane Bunting, M, Clo, E, Colombaroli, D, Combourieu-Nebout, N, Desprat, S, Di Rita, F, Djamali, M, Edwards, K, Fall, P, Feurdean, A, Fletcher, W, Florenzano, A, Furlanetto, G, Gaceur, E, Galimov, A, Galka, M, Garcia-Moreiras, I, Giesecke, T, Grindean, R, Guido, M, Gvozdeva, I, Herzschuh, U, Hjelle, K, Ivanov, S, Jahns, S, Jankovska, V, Jimenez-Moreno, G, Karpinska-Kolaczek, M, Kitaba, I, Kolaczek, P, Lapteva, E, Latalowa, M, Lebreton, V, Leroy, S, Leydet, M, Lopatina, D, Lopez-Saez, J, Lotter, A, Magri, D, Marinova, E, Matthias, I, Mavridou, A, Mercuri, A, Mesa-Fernandez, J, Mikishin, Y, Milecka, K, Montanari, C, Morales-Molino, C, Mrotzek, A, Sobrino, C, Naidina, O, Nakagawa, T, Nielsen, A, Novenko, E, Panajiotidis, S, Panova, N, Papadopoulou, M, Pardoe, H, Pedziszewska, A, Petrenko, T, Ramos-Roman, M, Ravazzi, C, Rosch, M, Ryabogina, N, Ruiz, S, Sakari Salonen, J, Sapelko, T, Schofield, J, Seppa, H, Shumilovskikh, L, Stivrins, N, Stojakowits, P, Svitavska, H, Swieta-Musznicka, J, Tantau, I, Tinner, W, Tobolski, K, Tonkov, S, Tsakiridou, M, Valsecchi, V, Zanina, O, Zimny, M, Davis B. A. S., Chevalier M., Sommer P., Carter V. A., Finsinger W., Mauri A., Phelps L. N., Zanon M., Abegglen R., Akesson C. M., Alba-Sanchez F., Scott Anderson R., Antipina T. G., Atanassova J. R., Beer R., Belyanina N. I., Blyakharchuk T. A., Borisova O. K., Bozilova E., Bukreeva G., Jane Bunting M., Clo E., Colombaroli D., Combourieu-Nebout N., Desprat S., Di Rita F., Djamali M., Edwards K. J., Fall P. L., Feurdean A., Fletcher W., Florenzano A., Furlanetto G., Gaceur E., Galimov A. T., Galka M., Garcia-Moreiras I., Giesecke T., Grindean R., Guido M. A., Gvozdeva I. G., Herzschuh U., Hjelle K. L., Ivanov S., Jahns S., Jankovska V., Jimenez-Moreno G., Karpinska-Kolaczek M., Kitaba I., Kolaczek P., Lapteva E. G., Latalowa M., Lebreton V., Leroy S., Leydet M., Lopatina D. A., Lopez-Saez J. A., Lotter A. F., Magri D., Marinova E., Matthias I., Mavridou A., Mercuri A. M., Mesa-Fernandez J. M., Mikishin Y. A., Milecka K., Montanari C., Morales-Molino C., Mrotzek A., Sobrino C. M., Naidina O. D., Nakagawa T., Nielsen A. B., Novenko E. Y., Panajiotidis S., Panova N. K., Papadopoulou M., Pardoe H. S., Pedziszewska A., Petrenko T. I., Ramos-Roman M. J., Ravazzi C., Rosch M., Ryabogina N., Ruiz S. S., Sakari Salonen J., Sapelko T. V., Schofield J. E., Seppa H., Shumilovskikh L., Stivrins N., Stojakowits P., Svitavska H. S., Swieta-Musznicka J., Tantau I., Tinner W., Tobolski K., Tonkov S., Tsakiridou M., Valsecchi V., Zanina O. G., Zimny M., Davis, B, Chevalier, M, Sommer, P, Carter, V, Finsinger, W, Mauri, A, Phelps, L, Zanon, M, Abegglen, R, Akesson, C, Alba-Sanchez, F, Scott Anderson, R, Antipina, T, Atanassova, J, Beer, R, Belyanina, N, Blyakharchuk, T, Borisova, O, Bozilova, E, Bukreeva, G, Jane Bunting, M, Clo, E, Colombaroli, D, Combourieu-Nebout, N, Desprat, S, Di Rita, F, Djamali, M, Edwards, K, Fall, P, Feurdean, A, Fletcher, W, Florenzano, A, Furlanetto, G, Gaceur, E, Galimov, A, Galka, M, Garcia-Moreiras, I, Giesecke, T, Grindean, R, Guido, M, Gvozdeva, I, Herzschuh, U, Hjelle, K, Ivanov, S, Jahns, S, Jankovska, V, Jimenez-Moreno, G, Karpinska-Kolaczek, M, Kitaba, I, Kolaczek, P, Lapteva, E, Latalowa, M, Lebreton, V, Leroy, S, Leydet, M, Lopatina, D, Lopez-Saez, J, Lotter, A, Magri, D, Marinova, E, Matthias, I, Mavridou, A, Mercuri, A, Mesa-Fernandez, J, Mikishin, Y, Milecka, K, Montanari, C, Morales-Molino, C, Mrotzek, A, Sobrino, C, Naidina, O, Nakagawa, T, Nielsen, A, Novenko, E, Panajiotidis, S, Panova, N, Papadopoulou, M, Pardoe, H, Pedziszewska, A, Petrenko, T, Ramos-Roman, M, Ravazzi, C, Rosch, M, Ryabogina, N, Ruiz, S, Sakari Salonen, J, Sapelko, T, Schofield, J, Seppa, H, Shumilovskikh, L, Stivrins, N, Stojakowits, P, Svitavska, H, Swieta-Musznicka, J, Tantau, I, Tinner, W, Tobolski, K, Tonkov, S, Tsakiridou, M, Valsecchi, V, Zanina, O, Zimny, M, Davis B. A. S., Chevalier M., Sommer P., Carter V. A., Finsinger W., Mauri A., Phelps L. N., Zanon M., Abegglen R., Akesson C. M., Alba-Sanchez F., Scott Anderson R., Antipina T. G., Atanassova J. R., Beer R., Belyanina N. I., Blyakharchuk T. A., Borisova O. K., Bozilova E., Bukreeva G., Jane Bunting M., Clo E., Colombaroli D., Combourieu-Nebout N., Desprat S., Di Rita F., Djamali M., Edwards K. J., Fall P. L., Feurdean A., Fletcher W., Florenzano A., Furlanetto G., Gaceur E., Galimov A. T., Galka M., Garcia-Moreiras I., Giesecke T., Grindean R., Guido M. A., Gvozdeva I. G., Herzschuh U., Hjelle K. L., Ivanov S., Jahns S., Jankovska V., Jimenez-Moreno G., Karpinska-Kolaczek M., Kitaba I., Kolaczek P., Lapteva E. G., Latalowa M., Lebreton V., Leroy S., Leydet M., Lopatina D. A., Lopez-Saez J. A., Lotter A. F., Magri D., Marinova E., Matthias I., Mavridou A., Mercuri A. M., Mesa-Fernandez J. M., Mikishin Y. A., Milecka K., Montanari C., Morales-Molino C., Mrotzek A., Sobrino C. M., Naidina O. D., Nakagawa T., Nielsen A. B., Novenko E. Y., Panajiotidis S., Panova N. K., Papadopoulou M., Pardoe H. S., Pedziszewska A., Petrenko T. I., Ramos-Roman M. J., Ravazzi C., Rosch M., Ryabogina N., Ruiz S. S., Sakari Salonen J., Sapelko T. V., Schofield J. E., Seppa H., Shumilovskikh L., Stivrins N., Stojakowits P., Svitavska H. S., Swieta-Musznicka J., Tantau I., Tinner W., Tobolski K., Tonkov S., Tsakiridou M., Valsecchi V., Zanina O. G., and Zimny M.

Abstract

The Eurasian (née European) Modern Pollen Database (EMPD) was established in 2013 to provide a public database of high-quality modern pollen surface samples to help support studies of past climate, land cover, and land use using fossil pollen. 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 throughout the Eurasian region. The EPD is in turn part of the rapidly growing Neotoma database, which is now the primary home for global palaeoecological data. This paper describes version 2 of the EMPD in which the number of samples held in the database has been increased by 60 % from 4826 to 8134. Much of the improvement in data coverage has come from northern Asia, and the database has consequently been renamed the Eurasian Modern Pollen Database to reflect this geographical enlargement. The EMPD can be viewed online using a dedicated map-based viewer at https://empd2.github.io and downloaded in a variety of file formats at https://doi.pangaea.de/10.1594/PANGAEA.909130 (Chevalier et al., 2019).

Published
2020

11. Climatic control on the Holocene hydrology of a playa-lake system in the western Mediterranean

Author

Ministerio de Economía y Competitividad (España), Junta de Andalucía, Universidad de Granada, García-Alix, Antonio, Jiménez-Moreno, Gonzalo, Gázquez, Fernando, Monedero-Contreras, Ricardo, López-Avilés, Alejandro, Jiménez-Espejo, Francisco J., Rodríguez-Rodríguez, Miguel, Camuera, Jon, Ramos-Román, María J., Scott Anderson, R., Ministerio de Economía y Competitividad (España), Junta de Andalucía, Universidad de Granada, García-Alix, Antonio, Jiménez-Moreno, Gonzalo, Gázquez, Fernando, Monedero-Contreras, Ricardo, López-Avilés, Alejandro, Jiménez-Espejo, Francisco J., Rodríguez-Rodríguez, Miguel, Camuera, Jon, Ramos-Román, María J., and Scott Anderson, R.

Abstract

Evaporitic lakes such as playa-lakes are characteristic of many arid regions and are unique environments with respect to fauna and flora, while being very vulnerable to climate and environmental fluctuations and threatened by the current global change scenario. Water balance oscillations in these systems can trigger the precipitation or dissolution of different evaporitic minerals, negatively impacting local biodiversity and economic activities. Here, we study the sedimentary record of a small saline pond from a playa-lake complex in southwestern Iberia in order to reconstruct the paleohydrological evolution of this area and assess potential anthropogenic disturbances. The different proxies studied in the ∼11.9 ky old sedimentary record of the Laguna de la Ballestera suggest that the greatest lake extension and the highest water levels occurred during the Early Holocene, pointing to the wettest period of the record. Climate transitioned towards more arid conditions during the Middle Holocene, and even more dramatically during the Late Holocene. In this last stage the wetland surface and the water level largely diminished and gypsum precipitation gradually increased pointing towards a negative precipitation/evapotranspiration balance and lowest water levels. Summer desiccation likely occurred under this scenario, especially after ∼1.0–0.9 cal ky BP coeval with the Medieval Climate Anomaly, when gypsum content started to rise abruptly. However, this significant gypsum precipitation was only associated with a massive drop in the siliciclastic content and scarce carbonates (dolomite and calcite) during the last ∼400 years. This evidence suggests a shift from a (semi) permanent to a temporal/seasonal hydrological regime. The environmental evolution of this wetland responded to the general climatic evolution of the western Mediterranean during the Holocene, being mostly controlled by changes in insolation. Our data also show that the environmental response of the studied

Published
2022

12. COVID-19 Clinical Outcomes in Solid Organ Transplant Recipients During the Omicron Surge

Author

Cochran, Willa, primary, Shah, Pali, additional, Barker, Lindsay, additional, Langlee, Julie, additional, Freed, Kristin, additional, Boyer, Lauren, additional, Scott Anderson, R., additional, Belden, Maura, additional, Bannon, Jaclyn, additional, Kates, Olivia S., additional, Permpalung, Nitipong, additional, Mostafa, Heba, additional, Segev, Dorry L., additional, Brennan, Daniel C., additional, and Avery, Robin K., additional

Published
2022
Full Text
View/download PDF

15. The Holocene Cedrus pollen record from Sierra Nevada (S Spain), a proxy for climate change in N Africa

Author

Jiménez-Moreno, Gonzalo, Scott Anderson, R., Ramos-Román, María J., Camuera, Jon, Mesa-Fernández, Jose Manuel, García-Alix, Antonio, Jiménez-Espejo, Francisco J., Carrión, José S., Jiménez-Moreno, Gonzalo, Scott Anderson, R., Ramos-Román, María J., Camuera, Jon, Mesa-Fernández, Jose Manuel, García-Alix, Antonio, Jiménez-Espejo, Francisco J., and Carrión, José S.

Abstract

[EN] In this study, we synthesized pollen data from seven sites from the Sierra Nevada in southern Spain to investigate the response of forests in the western Mediterranean area to centennial- and millennial-scale climate changes and to human impact during the Holocene. In particular, here we focused in Cedrus pollen abundances, which most-likely originated from Northern Africa and were carried to Sierra Nevada by wind. Although Cedrus abundances are generally lower than 1% in the studied pollen samples, a comparison with North African pollen records shows similar trends at long- and short-term time-scales. Therefore, this record could be used as a proxy for changes in this forest species in North Africa. A Middle and Late Holocene Cedrus pollen increasing trend has been observed in the Sierra Nevada synthetic record, which seems to be the result of decreasing summer insolation. This would have produced overall cooler annual temperatures in Northern Africa (Atlas and Rif Mountains), benefiting the growth of this cool-adapted montane tree species, and lower summer evaporation, increasing available moisture during the summer, which is critical for this water-demanding species. Millennial- and centennial-scale variability also characterize the Sierra Nevada Cedrus synthetic record. Cedrus abundance oscillations could have been produced by well-known millennial-scale climatic variability that controlled cedar abundance in montane areas of N Africa.

Published
2020

16. The Eurasian Modern Pollen Database (EMPD), version 2

Author

Université de Lausanne, Swiss National Science Foundation, López Sáez, José Antonio [0000-0002-3122-2744], Davis, Basil A. S., Chevalier, Manuel, Sommer, Philipp, Carter, Vachel A., Finsinger, Walter, Mauri, Achille, Phelps, Leanne N., Zanon, Marco, Abegglen, Roman, Åkesson, Christine M., Alba Sánchez, Francisca, Valsecchi, V., Zanina, Oksana G., Zimny, Marcelina, Scott Anderson, R., Antipina, Tatiana A., Atanassova, Juliana R., Beer, Ruth, Belyanina, Nina I., Blyakharchuk, Tatiana A., Borisova, Olga K., Bozilova, Elissaveta, Bukreeva, Galina, Bunting, M. Jane, Clò, Eleonora, Colombaroli, Daniele, Combourieu-Nebout, N., Desprat, Stéphanie, Rita, Federico di, Djamali, Morteza, Edwards, Kevin J., Fall, Patricia L., Feurdean, Angelica, Fletcher, William J., Florenzano, Assunta, Furlanetto, Giulia, Gaceur, Emna, Galimov, Arsenii T., Galka, Mariusz, García-Moreiras, Iria, Giesecke, Thomas, Grindean, Roxana, Guido, Maria A., Gvozdeva, Irina G., Herzschuh, Ulrike, Hjelle, Kari L., Ivanov, Sergy, Jahns, Susanne, Jankovska, Vlasta, Jiménez-Moreno, Gonzalo, Karpińska‐Kołaczek, Monika, Kitaba, Ikuko, Kolaczek, Piotr, Lapteva, Elena G., Latalowa, Malgorzata, Lebreton, Vincent, Leroy, Suzanne A. G., Leydet, Michelle, Lopatina, Darya A., López Sáez, José Antonio, Lotter, A. F., Marinova, Elena, Matthias, Isabelle, Mavridou, Anastasia, Mercuri, Anna Maria, Mesa-Fernández, Jose Manuel, Mikishin, Yuri A., Milecka, Krystyna, Montanari, Carlo, Morales-Molino, César, Mrotzek, Almut, Muñoz Sobrino, C., Naidina, Olga D., Nakagawa, Takeshi, Nielsen, Anne Birgitte, Novenko, Elena Y., Panajiotidis, Sampson, Panova, Nata K., Papadopoulou, María, Pardoe, Heather S., Pędziszewska, Anna, Petrenko, Tatitana I., Ramos-Román, María J., Ravazzi, Cesare, Rösch, Manfred, Ryabogina, Natalia, Sabariego Ruiz, Silvia, Salonen, J. Sakari, Sapelko, Tatyana V., Schofield, James E., Seppä, Heikki, Shumilovskikh, Lyudmila, Stivrins, Normunds, Stojakowits, Philipp, Svobodova Svitavska, Helena, Święta-Musznicka, Joanna, Tantau, Ioan, Tinner, Willy, Tobolski, Kazimierz, Tonkov, Spassimir, Tsakiridou, Margarita, Université de Lausanne, Swiss National Science Foundation, López Sáez, José Antonio [0000-0002-3122-2744], Davis, Basil A. S., Chevalier, Manuel, Sommer, Philipp, Carter, Vachel A., Finsinger, Walter, Mauri, Achille, Phelps, Leanne N., Zanon, Marco, Abegglen, Roman, Åkesson, Christine M., Alba Sánchez, Francisca, Valsecchi, V., Zanina, Oksana G., Zimny, Marcelina, Scott Anderson, R., Antipina, Tatiana A., Atanassova, Juliana R., Beer, Ruth, Belyanina, Nina I., Blyakharchuk, Tatiana A., Borisova, Olga K., Bozilova, Elissaveta, Bukreeva, Galina, Bunting, M. Jane, Clò, Eleonora, Colombaroli, Daniele, Combourieu-Nebout, N., Desprat, Stéphanie, Rita, Federico di, Djamali, Morteza, Edwards, Kevin J., Fall, Patricia L., Feurdean, Angelica, Fletcher, William J., Florenzano, Assunta, Furlanetto, Giulia, Gaceur, Emna, Galimov, Arsenii T., Galka, Mariusz, García-Moreiras, Iria, Giesecke, Thomas, Grindean, Roxana, Guido, Maria A., Gvozdeva, Irina G., Herzschuh, Ulrike, Hjelle, Kari L., Ivanov, Sergy, Jahns, Susanne, Jankovska, Vlasta, Jiménez-Moreno, Gonzalo, Karpińska‐Kołaczek, Monika, Kitaba, Ikuko, Kolaczek, Piotr, Lapteva, Elena G., Latalowa, Malgorzata, Lebreton, Vincent, Leroy, Suzanne A. G., Leydet, Michelle, Lopatina, Darya A., López Sáez, José Antonio, Lotter, A. F., Marinova, Elena, Matthias, Isabelle, Mavridou, Anastasia, Mercuri, Anna Maria, Mesa-Fernández, Jose Manuel, Mikishin, Yuri A., Milecka, Krystyna, Montanari, Carlo, Morales-Molino, César, Mrotzek, Almut, Muñoz Sobrino, C., Naidina, Olga D., Nakagawa, Takeshi, Nielsen, Anne Birgitte, Novenko, Elena Y., Panajiotidis, Sampson, Panova, Nata K., Papadopoulou, María, Pardoe, Heather S., Pędziszewska, Anna, Petrenko, Tatitana I., Ramos-Román, María J., Ravazzi, Cesare, Rösch, Manfred, Ryabogina, Natalia, Sabariego Ruiz, Silvia, Salonen, J. Sakari, Sapelko, Tatyana V., Schofield, James E., Seppä, Heikki, Shumilovskikh, Lyudmila, Stivrins, Normunds, Stojakowits, Philipp, Svobodova Svitavska, Helena, Święta-Musznicka, Joanna, Tantau, Ioan, Tinner, Willy, Tobolski, Kazimierz, Tonkov, Spassimir, and Tsakiridou, Margarita

Abstract

The Eurasian (née European) Modern Pollen Database (EMPD) was established in 2013 to provide a public database of high-quality modern pollen surface samples to help support studies of past climate, land cover, and land use using fossil pollen. 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 throughout the Eurasian region. The EPD is in turn part of the rapidly growing Neotoma database, which is now the primary home for global palaeoecological data. This paper describes version 2 of the EMPD in which the number of samples held in the database has been increased by 60% from 4826 to 8134. Much of the improvement in data coverage has come from northern Asia, and the database has consequently been renamed the Eurasian Modern Pollen Database to reflect this geographical enlargement. The EMPD can be viewed online using a dedicated map-based viewer at https://empd2.github.io and downloaded in a variety of file formats at https://doi.pangaea.de/10.1594/PANGAEA.909130 (Chevalier et al., 2019).

Published
2020

21. Holocene aridification trend interrupted by millennial- and centennial-scale climate fluctuations from a new sedimentary record from Padul (Sierra Nevada, southern Iberian Peninsula).

Author

Ramos-Román, María J., Jiménez-Moreno, Gonzalo, Camuera, Jon, García-Alix, Antonio, Scott Anderson, R., Jiménez-Espejo, Francisco J., and Carrión, José S.

Abstract

Holocene centennial-scale paleoenvironmental variability has been described in a multiproxy analysis (i.e. lithology, geochemistry, macrofossil and microfossil analyses) of a paleoecological record from the Padul basin in Sierra Nevada, southern Iberian Peninsula. This sequence covers a relevant time interval hitherto unreported in the studies of the Padul sedimentary sequence. The ca. 4700yr-long record has preserved proxies of climate variability, with vegetation, lake levels and sedimentological change the Holocene in one of the most unique and southernmost peat bogs from Europe. The progressive Middle and Late Holocene trend toward arid conditions identified by numerous authors in the western Mediterranean region, mostly related to a decrease in summer insolation, is also documented in this record, being here also superimposed by centennial-scale variability in humidity. In turn, this record shows centennial-scale climate oscillations in temperature that correlate with well-known climatic events during the Late Holocene in the western Mediterranean region, synchronous with variability in solar and atmospheric dynamics. The multiproxy Padul record first shows a transition from a relatively humid Middle Holocene in the western Mediterranean region to more aridity from ~4700 to ~2800calyr BP. A relatively warm and humid period occurred between ~ 2600 to ~ 1600 cal yr BP, coinciding with persistent negative NAO conditions and the historic Iberian-Roman Humid Period. Enhanced arid conditions, co-occurring with overall positive NAO conditions and increasing solar activity, are observed between ~ 1550 to ~ 450 cal yr BP (~ 400 to ~ 1400 CE) and colder and warmer conditions happened during the Dark Ages and Medieval Climate Anomaly, respectively. Slightly wetter conditions took place during the end of the MCA and the first part of the Little Ice Age, which could be related to a change towards negative NAO conditions and minima in solar activity. Evidences of higher human impact in the Padul peat bog area are observed in the last ~ 1550 cal yr BP. Time series analysis performed from local (Botryococcus and TOC) and regional signals (Mediterranean forest) helped us determining the relationship between southern Iberian climate evolution, atmospheric, oceanic dynamics and solar activity. [ABSTRACT FROM AUTHOR]

Published
2017
Full Text
View/download PDF

28. Palynological evidence for early Holocene aridity in the southern Sierra Nevada, California

Author

Davis, Owen K., Scott Anderson, R., Fall, Patricia L., O'Rourke, Mary K., and Thompson, Robert S.

Abstract

Sediments of Balsam Meadow have produced a 11,000-yr pollen record from the southern Sierra Nevada of California. The Balsam Meadow diagram is divided into three zones. (1) The Artemisiazone (11,000–7000 yr B.P.) is characterized by percentages of sagebrush ( Artemisia) and other nonarboreal pollen higher than can be found in the modern local vegetation. Vegetation during this interval was probably similar to the modern vegetation on the east slope of the Sierra Nevada and the climate was drier than that of today. (2) Pinuspollen exceeded 80% from 7000 to 3000 yr B.P. in the Pinuszone. The climate was moister than during the Artemisiazone. (3) Fir ( Abies, Cupressaceae, and oak ( Quercus) percentages increased after 3000 yr B.P. in the Abieszone as the modern vegetation at the site developed and the present cool-moist climatic regime was established. Decreased fire frequency after 1200 yr B.P. is reflected in decreased abundance of macroscopic charcoal and increased concentration of Abies magnificaand Pinus murrayananeedles.

Published
1985
Full Text
View/download PDF

30. The Eurasian Modern Pollen Database (EMPD), version 2

Author

Juliana Atanassova, Christine M. Åkesson, Piotr Kołaczek, Marco Zanon, Kari Loe Hjelle, Lyudmila S. Shumilovskikh, Heikki Seppä, Nathalie Combourieu-Nebout, Vachel A. Carter, James Edward Schofield, Krystyna Milecka, Iria García-Moreiras, Takeshi Nakagawa, Walter Finsinger, Willy Tinner, Castor Muñoz Sobrino, Anne Birgitte Nielsen, José Antonio López-Sáez, Elena Marinova, Philipp Stojakowits, Tatiana G. Antipina, Silvia Sabariego Ruiz, Roman Abegglen, Vlasta Jankovská, Oksana G. Zanina, Mariusz Gałka, Arsenii T. Galimov, Maria Papadopoulou, Manfred Rösch, Kevin J. Edwards, Patricia L. Fall, Basil A. S. Davis, Philipp Sommer, Elissaveta Bozilova, Ulrike Herzschuh, Verushka Valsecchi, Natalia Ryabogina, Ikuko Kitaba, Elena Novenko, Michelle Leydet, Anna Pędziszewska, Nata K. Panova, Almut Mrotzek, Donatella Magri, Eleonora Clo, Isabelle Matthias, R. Scott Anderson, Tatiana Blyakharchuk, Kazimierz Tobolski, Vincent Lebreton, Leanne N. Phelps, Irina G. Gvozdeva, André F. Lotter, Nina I. Belyanina, Assunta Florenzano, William J. Fletcher, Ioan Tantau, Suzanne A.G. Leroy, Roxana Grindean, Normunds Stivrins, Elena G. Lapteva, Francisca Alba-Sánchez, J. Sakari Salonen, Tatiana I. Petrenko, Tatyana V. Sapelko, Angelica Feurdean, Anna Maria Mercuri, Yuri A. Mikishin, G Furlanetto, Susanne Jahns, Cesare Ravazzi, Helena Svobodova Svitavska, Anastasia Mavridou, Carlo Alessandro Montanari, Jose Manuel Mesa-Fernández, Sampson Panajiotidis, Ruth Beer, Stéphanie Desprat, Federico Di Rita, María J. Ramos-Román, Emna Gaceur, Joanna Święta-Musznicka, Małgorzata Latałowa, Thomas Giesecke, Olga K. Borisova, Galina Bukreeva, M. Jane Bunting, Manuel Chevalier, Achille Mauri, Maria Angela Guido, Darya A. Lopatina, César Morales-Molino, Spassimir Tonkov, Marcelina Zimny, Monika Karpińska-Kołaczek, Sergey Ivanov, Gonzalo Jiménez-Moreno, Daniele Colombaroli, Morteza Djamali, Heather S. Pardoe, Olga D. Naidina, Margarita Tsakiridou, Université de Lausanne, Swiss National Science Foundation, López Sáez, José Antonio [0000-0002-3122-2744], Institute of Earth Surface Dynamics [Lausanne], Université de Lausanne = University of Lausanne (UNIL), Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS), Charles University [Prague] (CU), Lomonosov Moscow State University (MSU), Oeschger Centre for Climate Change Research (OCCR), University of Bern, Histoire naturelle de l'Homme préhistorique (HNHP), Muséum national d'Histoire naturelle (MNHN)-Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS), Environnements et Paléoenvironnements OCéaniques (EPOC), Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS), Department of physical chemistry, Uppsala University, Senckenberg biodiversität und klima forschungszentrum (BIK-F), Forschungsinstitut Senckenberg (SGN), Laboratorio di Palinologia e Paleobotanica, Adam Mickiewicz University in Poznań (UAM), Department of Palynology and Climate Dynamics, Georg-August-University = Georg-August-Universität Göttingen, Alfred Wegener Institute for Polar and Marine Research (AWI), Natural History Collections, University of Bergen (UiB)-University of Bergen (UiB), A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences [Moscow] (RAS), Brandenburgisches Landesamt für Denkmalpflege und Archäologisches Landesmuseum, Universidad de Granada = University of Granada (UGR), Institute of Geoecology and Geoinformation, Department of Plant Ecology, Gdansk University, University of Gdańsk (UG), Laboratoire de Recherche en Sciences Humaines (Lares-Las), Université de Rennes 2 (UR2), Dipartimento di biologia ambientale, Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA), Department of Botany, Sofia University 'St. Kliment Ohridski', NASA Ames Research Center (ARC), Department of Biogeography and Palaeoecology, Institut Méditerranéen d'Ecologie et de Paléoécologie (IMEP), Université Paul Cézanne - Aix-Marseille 3-Université de Provence - Aix-Marseille 1-Avignon Université (AU)-Centre National de la Recherche Scientifique (CNRS), Lund University [Lund], Laboratoire d'Informatique, Systèmes, Traitement de l'Information et de la Connaissance (LISTIC), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), CNR-IDPA, Dipartimento di Scienze dell'Ambiente e del Territorio, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), Department of Physics and Astronomy [Turku], University of Turku, Helsingin yliopisto = Helsingfors universitet = University of Helsinki, Department of Geography [Riga], Софийски университет = Sofia University, University of Portsmouth, Aix Marseille Université (AMU), Avignon Université (AU), López Sáez, José Antonio, Davis, B, Chevalier, M, Sommer, P, Carter, V, Finsinger, W, Mauri, A, Phelps, L, Zanon, M, Abegglen, R, Akesson, C, Alba-Sanchez, F, Scott Anderson, R, Antipina, T, Atanassova, J, Beer, R, Belyanina, N, Blyakharchuk, T, Borisova, O, Bozilova, E, Bukreeva, G, Jane Bunting, M, Clo, E, Colombaroli, D, Combourieu-Nebout, N, Desprat, S, Di Rita, F, Djamali, M, Edwards, K, Fall, P, Feurdean, A, Fletcher, W, Florenzano, A, Furlanetto, G, Gaceur, E, Galimov, A, Galka, M, Garcia-Moreiras, I, Giesecke, T, Grindean, R, Guido, M, Gvozdeva, I, Herzschuh, U, Hjelle, K, Ivanov, S, Jahns, S, Jankovska, V, Jimenez-Moreno, G, Karpinska-Kolaczek, M, Kitaba, I, Kolaczek, P, Lapteva, E, Latalowa, M, Lebreton, V, Leroy, S, Leydet, M, Lopatina, D, Lopez-Saez, J, Lotter, A, Magri, D, Marinova, E, Matthias, I, Mavridou, A, Mercuri, A, Mesa-Fernandez, J, Mikishin, Y, Milecka, K, Montanari, C, Morales-Molino, C, Mrotzek, A, Sobrino, C, Naidina, O, Nakagawa, T, Nielsen, A, Novenko, E, Panajiotidis, S, Panova, N, Papadopoulou, M, Pardoe, H, Pedziszewska, A, Petrenko, T, Ramos-Roman, M, Ravazzi, C, Rosch, M, Ryabogina, N, Ruiz, S, Sakari Salonen, J, Sapelko, T, Schofield, J, Seppa, H, Shumilovskikh, L, Stivrins, N, Stojakowits, P, Svitavska, H, Swieta-Musznicka, J, Tantau, I, Tinner, W, Tobolski, K, Tonkov, S, Tsakiridou, M, Valsecchi, V, Zanina, O, Zimny, M, University of St Andrews. School of Geography & Sustainable Development, University of St Andrews. Environmental Change Research Group, Department of Geosciences and Geography, Université de Lausanne (UNIL), École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UR226, Department of Botany, Faculty of Science, Charles University, Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE), Georg-August-University [Göttingen], Departamento de Estratigrafía y Paleontología, Universidad de Granada, Universidad de Granada (UGR), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Sofia University 'Sv. Kliment Ohridski', Université Paul Cézanne - Aix-Marseille 3-Centre National de la Recherche Scientifique (CNRS)-Avignon Université (AU)-Université de Provence - Aix-Marseille 1, Department of Geology, Lund University, Sölvegatan 12, SE-22362 Lund, Sweden, Università degli Studi di Milano-Bicocca [Milano] (UNIMIB), University of Helsinki, and University of Sofia

Subjects
0106 biological sciences, LAKE CONSTANCE REGION, Palynology Palaeoecology Palaeoclimatology, 010504 meteorology & atmospheric sciences, HUMAN IMPACT, recent pollen deposition, 580 Plants (Botany), medicine.disease_cause, 01 natural sciences, 2417.10 Paleobotánica, [SDV.SA.SF]Life Sciences [q-bio]/Agricultural sciences/Silviculture, forestry, ddc:550, SURFACE POLLEN, SOUTHERN NORWAY, SDG 13 - Climate Action, ComputingMilieux_MISCELLANEOUS, lcsh:Environmental sciences, SDG 15 - Life on Land, lcsh:GE1-350, 0303 health sciences, CLIMATE-CHANGE, GE, APUSENI NATURAL PARK, lcsh:QE1-996.5, Foundation (engineering), European pollen database, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics, [SDV.BIBS]Life Sciences [q-bio]/Quantitative Methods [q-bio.QM], Europe, LAST GLACIAL MAXIMUM, Geography, NORTHERN IBERIAN PLATEAU, pollen, GE Environmental Sciences, 1171 Geosciences, 010506 paleontology, [SDE.MCG]Environmental Sciences/Global Changes, Earth and Planetary Sciences(all), Library science, Climate change, [SDU.STU]Sciences of the Universe [physics]/Earth Sciences, 010603 evolutionary biology, neotoma, 03 medical and health sciences, Eurasian Modern Pollen Database, 2502.05 Paleoclimatología, Pollen, medicine, SIERRA-NEVADA, [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment, 0105 earth and related environmental sciences, 030304 developmental biology, Botánica, HOLOCENE VEGETATION HISTORY, DAS, 15. Life on land, 2416.03 Palinología, [SDE.ES]Environmental Sciences/Environmental and Society, lcsh:Geology, [SDU]Sciences of the Universe [physics], MCP, General Earth and Planetary Sciences, [SDE.BE]Environmental Sciences/Biodiversity and Ecology
Abstract

The Eurasian (née European) Modern Pollen Database (EMPD) was established in 2013 to provide a public database of high-quality modern pollen surface samples to help support studies of past climate, land cover, and land use using fossil pollen. 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 throughout the Eurasian region. The EPD is in turn part of the rapidly growing Neotoma database, which is now the primary home for global palaeoecological data. This paper describes version 2 of the EMPD in which the number of samples held in the database has been increased by 60% from 4826 to 8134. Much of the improvement in data coverage has come from northern Asia, and the database has consequently been renamed the Eurasian Modern Pollen Database to reflect this geographical enlargement. The EMPD can be viewed online using a dedicated map-based viewer at https://empd2.github.io and downloaded in a variety of file formats at https: //doi.pangaea.de/10.1594/PANGAEA.909130 (Chevalier et al., 2019)., Swiss National Science Foundation (SNSF) 200021_169598, University of Lausanne

Published
2020

Catalog

Books, media, physical & digital resources
See catalog results