noaa-other-25150 Magurici Cave, Romania 1,130 Year Bat Guano d13C and d15N Data Cleary, D.M.; Onac, B.P.; Tantau, I.; Forray, F.L.; Wynn, J.G.; Ionita, M.; Tamas, T. Magurici Cave, Romania 1,130 Year Bat Guano d13C and d15N Data 2018-09-11 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/25150 Investigator D.M. Cleary Investigator B.P. Onac Investigator I. Tantau Investigator F.L. Forray Investigator J.G. Wynn Investigator M. Ionita Investigator T. Tamas earth science paleoclimate others geoscientificInformation 881 AD 2012 AD 1069 cal yr BP -62 cal yr BP Complete 47.36 47.36 23.55 23.55 319 319 Continent Europe Eastern Europe Romania Magurici Cave>LATITUDE 47.36>LONGITUDE 23.55 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Daniel M. Cleary, Bogdan P. Onac, Ioan Tantau, Ferenc L. Forray, Jonathan G. Wynn, Monica Ionita, Tudor Tamas 2018 Journal of Quaternary Science 33 6 677-688 10.1002/jqs.3044 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3044

A 285-cm core of bat guano was recovered from Magurici Cave in north-west Romania and analyzed for d13C, d15N and pollen. Guano deposition occurred from AD 881 until 1240 and from AD 1651 to 2013, allowing for the interpretation of summer variations in precipitation and temperature during the Medieval Warm Period (MWP) and the Little Ice Age (LIA). A 2 per mil increase in d13C, 1.5 per mil decrease in d15N, and the presence of Ulmus, Quercus and Carpinus betulus indicate a warm and dry MWP occurred in the region. The lack of deposition during the beginning of the LIA suggests a possible climate-induced change in prey availability resulting in bats vacating the cave. Variation of d13C values between -25 and -23 per mil at AD 1650 (LIA) indicates similar drier conditions as at the end of MWP. However, a 2 per mil decrease in d13C values that occurred between AD 1790 and 1900 suggests climate was trending towards wetter conditions at the end of the LIA. From AD 1938 to 2013, d13C values appear to be more influenced by temperature, indicating that this parameter had a more significant effect on carbon discrimination than water availability. STUDY NOTES: Stable isotope (d13C, d15N) data from bat guano collected in Magurici Cave, Romania, for CE 881-1240 and CE 1651-2013

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/romania/magurici2018guano.txt NOAA Template File; Magurici Cave Bat Guano d13C and d15N Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11