caa a22 4500 445891688 CHVBK 20180317145618.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s10750-011-0881-3 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0881-3 Cladocera response to Late Glacial to Early Holocene climate change in a South Carpathian mountain lake [Elektronische Daten] [János Korponai, Enikő Magyari, Krisztina Buczkó, Sanda Iepure, Tadeusz Namiotko, Dániel Czakó, Csilla Kövér, Mihály Braun] This study explores changes in cladoceran composition in a high mountain lake of the Retezat (Lake Brazi), the South Carpathian Mountains of Romania, during the Late Glacial-Early Holocene (14,500-11,600cal.yr. bp) transition using a paleolimnological approach. The lake had a species poor cladoceran community throughout this period. Daphnia longispina, Chydorus sphaericus and Alona affinis were the most common, showing marked fluctuations in their relative abundances through time. Distinct faunal response to warming at the Younger Dryas (YD)/Preboreal transition was recorded by increasing fossil densities and distinct community composition change: Alona affinis became dominant while numbers of Chydorus sphaericus dramatically decreased. In the Early Holocene, the productivity of Lake Brazi seem to have increased as reflected by higher numbers of Cladocera due to appearance of new species (Alona rectangula, A. quadrangularis and A. guttata) which are common in productive waters. Significant negative correlation was found between average dorsal length of daphnid ephippia and the NGRIP δ18O isotope values. Given the absence of fish predation, changes in Daphnia ephippia size were taken to indicate climatic change: larger ephippium size inferred cold conditions during the Late Glacial, while smaller size reflected climate warming during the Early Holocene. We conclude that Cladocera fossils are good indicators of climatic change that happened during the transition from the Late Glacial to the Holocene. We found that climatic conditions can be tracked either by size distribution of Daphnia ephippia (larger ephippium size under colder climate) and/or by community change of cladocerans. Springer Science+Business Media B.V., 2011 Cladocera remains nationallicence Chydorids nationallicence Climate change nationallicence Mountain lake nationallicence Romania nationallicence Korponai János West-Transdanubian District Water Authority, Csik F. str. 4, 8360, Keszthely, Hungary aut Magyari Enikő HAS-NHMUS Research Group for Paleontology, P. O. Box 222, 1476, Budapest, Hungary aut Buczkó Krisztina Department of Botany, Hungarian Natural History Museum, P.O. Box 222, 1476, Budapest, Hungary aut Iepure Sanda Department of Mineralogy, Babes-Bolyai University, Kogalniceanu 1, 3400, Cluj, Romania aut Namiotko Tadeusz Department of Genetics, Laboratory of Limnozoology, University of Gdansk, Kladki 24, 80-822, Gdansk, Poland aut Czakó Dániel School of Earth Sciences and Geography, Kingston University, Penrhyn Road, KT1 2EE, Kingston-upon-Thames, Surrey, UK aut Kövér Csilla Department of Chemistry and Environmental Sciences, University of West Hungary, Károly Gáspár tér 4, 9700, Szombathely, Hungary aut Braun Mihály Department of Inorganic and Analytical Chemistry, University of Debrecen, P.O. Box 21, 4010, Debrecen, Hungary aut Hydrobiologia Springer Netherlands 676/1(2011-11-01), 223-235 0018-8158 676:1<223 2011 676 10750 https://doi.org/10.1007/s10750-011-0881-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0881-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Korponai János West-Transdanubian District Water Authority, Csik F. str. 4, 8360, Keszthely, Hungary aut NATIONALLICENCE 700 1- Magyari Enikő HAS-NHMUS Research Group for Paleontology, P. O. Box 222, 1476, Budapest, Hungary aut NATIONALLICENCE 700 1- Buczkó Krisztina Department of Botany, Hungarian Natural History Museum, P.O. Box 222, 1476, Budapest, Hungary aut NATIONALLICENCE 700 1- Iepure Sanda Department of Mineralogy, Babes-Bolyai University, Kogalniceanu 1, 3400, Cluj, Romania aut NATIONALLICENCE 700 1- Namiotko Tadeusz Department of Genetics, Laboratory of Limnozoology, University of Gdansk, Kladki 24, 80-822, Gdansk, Poland aut NATIONALLICENCE 700 1- Czakó Dániel School of Earth Sciences and Geography, Kingston University, Penrhyn Road, KT1 2EE, Kingston-upon-Thames, Surrey, UK aut NATIONALLICENCE 700 1- Kövér Csilla Department of Chemistry and Environmental Sciences, University of West Hungary, Károly Gáspár tér 4, 9700, Szombathely, Hungary aut NATIONALLICENCE 700 1- Braun Mihály Department of Inorganic and Analytical Chemistry, University of Debrecen, P.O. Box 21, 4010, Debrecen, Hungary aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 676/1(2011-11-01), 223-235 0018-8158 676:1<223 2011 676 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer