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  1. Book: Fossil remains in karst and their role in reconstructing quaternary paleoclimate and paleoenvironments

    Constantin, Silviu

    (Quaternary international ; 339/340)

    2014  

    Author's details guest ed.: Silviu Constantin
    Series title Quaternary international ; 339/340
    Language English
    Size 299 S.
    Publisher Elsevier
    Publishing place Amsterdam u.a.
    Document type Book
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  2. Article ; Online: Bat dynamics modelling as a tool for conservation management in subterranean environments.

    Măntoiu, Dragoş Ştefan / Mirea, Ionuţ Cornel / Şandric, Ionuţ Cosmin / Cîşlariu, Alina Georgiana / Gherghel, Iulian / Constantin, Silviu / Moldovan, Oana Teodora

    PloS one

    2022  Volume 17, Issue 10, Page(s) e0275984

    Abstract: Bat species inhabit subterranean environments (e.g., caves and mines) in small areas with specific microclimatic conditions, during various periods of their life cycle. Bats can be negatively influenced by microclimatic changes within their roosts if ... ...

    Abstract Bat species inhabit subterranean environments (e.g., caves and mines) in small areas with specific microclimatic conditions, during various periods of their life cycle. Bats can be negatively influenced by microclimatic changes within their roosts if optimal habitat patches become unavailable. Therefore, proper management solutions must be applied for the conservation of vulnerable bat populations, especially in show caves. We have pursued an ensemble species distribution modelling approach in subterranean environments to identify sensible patches for bats. Using multi-annual temperature monitoring and bat distribution surveys performed within ten caves and mines, including show caves, we modelled relevant habitat patches for five bat species. The temperature-based variables generated from this approach proved to be effective when processed via species distribution models, which generated optimal validation results, even for bats that were heavily clustered in colonies. Management measures are proposed for each show cave to help in long-time conservation of hibernation and maternity colonies. These measures include creating suitable microclimatic patches within the caves by ecological reconstruction measures, tourist management practices in relation to bats, and show cave fitting recommendations. This approach has never been performed at this scale due to the complex geostatistical challenges involving subterranean environment mapping and can be further used as best practice guidelines for future conservation projects.
    MeSH term(s) Animals ; Pregnancy ; Caves ; Chiroptera ; Ecosystem ; Hibernation ; Microclimate
    Language English
    Publishing date 2022-10-20
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0275984
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Yearly microbial cycle of human exposed surfaces in show caves

    Bercea, Silviu / Năstase-Bucur, Ruxandra / Moldovan, Oana Teodora / Kenesz, Marius / Constantin, Silviu

    Subterranean biology. 2019 July 11, v. 31

    2019  

    Abstract: The human impact upon the subterranean microbiomes is not only a peril to the cave environment but might also affect future visitors. We focused on the changes that humans induced on the surfaces they came in direct or indirect contact with inside two ... ...

    Abstract The human impact upon the subterranean microbiomes is not only a peril to the cave environment but might also affect future visitors. We focused on the changes that humans induced on the surfaces they came in direct or indirect contact with inside two intensely visited Romanian show caves, by means of commercially available microbial rapid test kits and molecular identification. Overall culturable bacteria abundance in the caves maintained high levels year-round while Enterobacteriaceae, coliform bacteria and Escherichiacoli levels peaked during the touristic season, reaching levels that could pose a threat to the health of the visitors. Culturable fungi abundance usually peaked in the spring, remained at a high level in the summer and started to slowly decrease towards the winter months. Differences were observed between the direct and indirect exposed surfaces, as the later had lower overall levels of bacteria and fungi, with increased Enterobacteriaceae loads. Most of the taxa identified are known biodeteriorants of subterranean surfaces and were previously associated with human altered caves. A Dothideomycete sp. previously unknown to the cave environments was detected. This was the first study to analyse the dynamics of the microbial communities of delicate subterranean surfaces in show caves through the use of commercially available test kits. We revealed that exposed surfaces in show caves, in direct or indirect contact with tourists, are host to high concentrations of cultivable microbes. The touristic activity was shown to influence the abundance and dynamics of the microbial communities inhabiting surfaces of show caves.
    Keywords Enterobacteriaceae ; anthropogenic activities ; coliform bacteria ; humans ; indirect contact ; microbiome ; rapid methods ; spring ; summer
    Language English
    Dates of publication 2019-0711
    Size p. 1-14.
    Publishing place Pensoft Publishers
    Document type Article
    Note NAL-light
    ZDB-ID 2633922-5
    ISSN 1314-2615 ; 1768-1448
    ISSN (online) 1314-2615
    ISSN 1768-1448
    DOI 10.3897/subtbiol.31.34490
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: A 16S rRNA Gene-Based Metabarcoding of Phosphate-Rich Deposits in Muierilor Cave, South-Western Carpathians.

    Haidău, Catalina / Năstase-Bucur, Ruxandra / Bulzu, Paul / Levei, Erika / Cadar, Oana / Mirea, Ionuţ Cornel / Faur, Luchiana / Fruth, Victor / Atkinson, Irina / Constantin, Silviu / Moldovan, Oana Teodora

    Frontiers in microbiology

    2022  Volume 13, Page(s) 877481

    Abstract: Muierilor Cave is one of Romania's most important show caves, with paleontological and archeological deposits. Recently, a new chamber was discovered in the cave, with unique yellow calcite crystals, fine-grained crusts, and black sediments. The deposits ...

    Abstract Muierilor Cave is one of Romania's most important show caves, with paleontological and archeological deposits. Recently, a new chamber was discovered in the cave, with unique yellow calcite crystals, fine-grained crusts, and black sediments. The deposits in this chamber were related to a leaking process from the upper level that contains fossil bones and a large pile of guano. Samples were taken from the new chamber and another passage to investigate the relationship between the substrate and microbial community. Chemical, mineralogical, and whole community 16S rRNA gene-based metabarcoding analyses were undertaken, and the base of the guano deposit was radiocarbon dated. Our study indicated bacteria linked to the presence of high phosphate concentration, most likely due to the nature of the substrate (hydroxyapatite). Bacteria involved in Fe, Mn, or N cycles were also found, as these elements are commonly identified in high concentrations in guano. Since no bat colonies or fossil bones were present in the new chamber, a high concentration of these elements could be sourced by organic deposits inside the cave (guano and fossil bones) even after hundreds of years of their deposition and in areas far from both deposits. Metabarcoding of the analyzed samples found that ∼0.7% of the identified bacteria are unknown to science, and ∼47% were not previously reported in caves or guano. Moreover, most of the identified human-related bacteria were not reported in caves or guano before, and some are known for their pathogenic potential. Therefore, continuous monitoring of air and floor microbiology should be considered in show caves with organic deposits containing bacteria that can threaten human health. The high number of unidentified taxa in a small sector of Muierilor Cave indicates the limited knowledge of the bacterial diversity in caves that can have potential applications in human health and biotechnology.
    Language English
    Publishing date 2022-05-19
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2022.877481
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Book: Life and death at the Peştera cu Oase

    Trinkaus, Erik / Constantin, Silviu / Zilhão, João

    a setting for modern human emergence in Europe

    (Human evolution series)

    2012  

    Author's details edited by Erik Trinkaus, Silviu Constantin, and Joao Zilhao
    Series title Human evolution series
    MeSH term(s) Paleontology ; Caves ; Humans ; Ursidae
    Keywords Romania
    Language English
    Size xii, 435 pages :, illustrations (some color), maps, portraits ;, 29 cm.
    Publisher Oxford University Press
    Publishing place New York
    Document type Book
    ISBN 9780195398229 ; 019539822X
    Database Catalogue of the US National Library of Medicine (NLM)

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  6. Article: Palaeoecology and palaeoclimatic context of Romanian Carpathian MIS 3 cave bears using stable isotopes (δ13C and δ18O)

    Robu, Marius / Constantin, Silviu / Martin, Jeremy E / Meleg, Ioana Nicoleta / Puşcaş, Cristina Montana / Wynn, Jonathan

    Elsevier B.V. Palaeogeography, palaeoclimatology, palaeoecology. 2019 Nov. 15, v. 534

    2019  

    Abstract: Millimeter-scale growth rings in canine dentine of MIS 3 cave bears have been interpreted as annual growth bands produced, in part, by seasonal variation in growth rate. We present new intra-tooth stable carbon (δ13C) and oxygen (δ18O) isotope profiles ... ...

    Abstract Millimeter-scale growth rings in canine dentine of MIS 3 cave bears have been interpreted as annual growth bands produced, in part, by seasonal variation in growth rate. We present new intra-tooth stable carbon (δ13C) and oxygen (δ18O) isotope profiles in dentine hydroxylapatite of early forming permanent teeth, from three famous Late Pleistocene cave bear sites from Romanian Carpathians. We measured δ13C and δ18O of the CO3 fraction of dentine hydroxylapatite from samples covering a profile across the root, representing a general line from juvenile period to adulthood. Carbon isotopes measured in dentine samples – from the first to the last to be deposited – of the same individual, record an increase in δ13C values throughout immature life of bears as has been shown previously, with lower precision, using age categories. For the first time, based on δ13C data analysis, the weaning process in cave bears was identified. The δ18O values show substantial variations related, most probably, to seasonal growth of the dentine. Finally, the CO3 of dentine apatite extracted from cave bear canines proves to be reliable for geochemical analyses, reflecting physiology, behavior and palaeoclimatic conditions.
    Keywords adulthood ; apatite ; carbon isotopes ; carbonates ; dogs ; growth rings ; juveniles ; oxygen ; paleoclimatology ; paleoecology ; Pleistocene epoch ; seasonal growth ; seasonal variation ; stable isotopes ; teeth ; Ursidae ; weaning
    Language English
    Dates of publication 2019-1115
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 417718-6
    ISSN 0031-0182
    ISSN 0031-0182
    DOI 10.1016/j.palaeo.2019.109288
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 67/162: Show issues

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  7. Book: Archives of climate and environmental change in Karst

    Constantin, Silviu / Onac, Bogdan P

    (Quaternary international ; 187)

    2008  

    Author's details guest ed. Bogdan P. Onac and Silviu Constantin
    Series title Quaternary international ; 187
    Language English
    Size 119 S., Ill., graph. Darst., Kt.
    Publisher Elsevier
    Publishing place Amsterdam u.a.
    Document type Book
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  8. Article ; Online: Application of Inductively Coupled Plasma Spectrometric Techniques and Multivariate Statistical Analysis in the Hydrogeochemical Profiling of Caves-Case Study Cloșani, Romania.

    Torok, Anamaria Iulia / Levei, Erika Andrea / Constantin, Silviu / Moldovan, Oana Teodora / Senila, Marin / Cadar, Oana / Casoni, Dorina / Angyus, Simion Bogdan / Tanaselia, Claudiu / Covaci, Eniko / Frentiu, Tiberiu

    Molecules (Basel, Switzerland)

    2021  Volume 26, Issue 22

    Abstract: The aim of the study was to develop the hydrogeochemical profiling of caves based on the elemental composition of water and silty soil samples and a multivariate statistical analysis. Major and trace elements, including rare earths, were determined in ... ...

    Abstract The aim of the study was to develop the hydrogeochemical profiling of caves based on the elemental composition of water and silty soil samples and a multivariate statistical analysis. Major and trace elements, including rare earths, were determined in the water and soil samples. The general characteristics of water, anions content, inorganic and organic carbon fractions and nitrogen species (NO
    Language English
    Publishing date 2021-11-10
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules26226788
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.MO 81: Show issues

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  9. Article ; Online: Ancient human footprints in Ciur-Izbuc Cave, Romania.

    Webb, David / Robu, Marius / Moldovan, Oana / Constantin, Silviu / Tomus, Bogdan / Neag, Ionel

    American journal of physical anthropology

    2014  Volume 155, Issue 1, Page(s) 128–135

    Abstract: In 1965, Ciur-Izbuc Cave in the Carpathian Mountains of Romania was discovered to contain about 400 ancient human footprints. At that time, researchers interpreted the footprints to be those of a man, woman and child who entered the cave by an opening ... ...

    Abstract In 1965, Ciur-Izbuc Cave in the Carpathian Mountains of Romania was discovered to contain about 400 ancient human footprints. At that time, researchers interpreted the footprints to be those of a man, woman and child who entered the cave by an opening which is now blocked but which was usable in antiquity. The age of the prints (≈10-15 ka BP) was based partly on their association with cave bear (Ursus spelaeus) footprints and bones, and the belief that cave bears became extinct near the end of the last ice age. Since their discovery, the human and bear evidence and the cave itself have attracted spelunkers and other tourists, with the result that the ancient footprints are in danger of destruction by modern humans. In an effort to conserve the footprints and information about them and to reanalyze them with modern techiques, Ciur-Izbuc Cave was restudied in summer of 2012. Modern results are based on fewer than 25% of the originally described human footprints, the rest having been destroyed. It is impossible to confirm some of the original conclusions. The footprints do not cluster about three different sizes, and the number of individuals is estimated to be six or seven. Two cases of bears apparently overprinting humans help establish antiquity, and C-14 dates suggest a much greater age than originally thought. Unfortunately, insufficient footprints remain to measure movement variables such as stride length. However, detailed three-dimensional mapping of the footprints does allow a more precise description of human movements within the cave.
    MeSH term(s) Animals ; Anthropology, Physical ; Body Height/physiology ; Caves ; Foot/physiology ; Fossils ; History, Ancient ; Humans ; Romania ; Ursidae ; Walking/physiology
    Language English
    Publishing date 2014-09
    Publishing country United States
    Document type Historical Article ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 219376-0
    ISSN 1096-8644 ; 0002-9483
    ISSN (online) 1096-8644
    ISSN 0002-9483
    DOI 10.1002/ajpa.22561
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

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    In stock of ZB MED Cologne/Königswinter

    Ub I Zs.86: Show issues Location:
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  10. Article ; Online: Initial Upper Palaeolithic humans in Europe had recent Neanderthal ancestry.

    Hajdinjak, Mateja / Mafessoni, Fabrizio / Skov, Laurits / Vernot, Benjamin / Hübner, Alexander / Fu, Qiaomei / Essel, Elena / Nagel, Sarah / Nickel, Birgit / Richter, Julia / Moldovan, Oana Teodora / Constantin, Silviu / Endarova, Elena / Zahariev, Nikolay / Spasov, Rosen / Welker, Frido / Smith, Geoff M / Sinet-Mathiot, Virginie / Paskulin, Lindsey /
    Fewlass, Helen / Talamo, Sahra / Rezek, Zeljko / Sirakova, Svoboda / Sirakov, Nikolay / McPherron, Shannon P / Tsanova, Tsenka / Hublin, Jean-Jacques / Peter, Benjamin M / Meyer, Matthias / Skoglund, Pontus / Kelso, Janet / Pääbo, Svante

    Nature

    2021  Volume 592, Issue 7853, Page(s) 253–257

    Abstract: Modern humans appeared in Europe by at least 45,000 years ... ...

    Abstract Modern humans appeared in Europe by at least 45,000 years ago
    MeSH term(s) Alleles ; Americas/ethnology ; Animals ; Archaeology ; Bulgaria/ethnology ; Caves ; DNA, Ancient/analysis ; Asia, Eastern/ethnology ; Female ; Genome, Human/genetics ; History, Ancient ; Humans ; Male ; Neanderthals/genetics ; Phylogeny
    Chemical Substances DNA, Ancient
    Language English
    Publishing date 2021-04-07
    Publishing country England
    Document type Historical Article ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-021-03335-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 26: Show issues Location:
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    Zs.MG 9: Show issues
    Zs.MO 244: Show issues

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