Zofia Dubicka
University of Warsaw
DevonianStructural basinStratigraphyOceanographyCretaceousCalcareousGeologySynclineEcological successionPaleontologyGeochemistryIsotopes of carbonEcologyMiliolidaCalciteForaminiferaBelemnitesExtinction eventBiostratigraphyTaxonBenthic zoneBiology
35Publications
11H-index
292Citations
Publications 38
Newest
#1Ireneusz Walaszczyk (University of Warsaw)H-Index: 22
#2Stanislav ČechH-Index: 8
Last. Martin A. PearceH-Index: 13
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#1Zbyszek Remin (University of Warsaw)H-Index: 5
Last. Joanna Roszkowska-ReminH-Index: 2
view all 5 authors...
The Nasilow section represents the uppermost part of the Middle Vistula River section, a classical Polish extra-Carpathian Cretaceous section, and gives access to the Cretaceous–Paleogene (K-Pg) boundary interval. Despite many papers that have been published so far, our newly collected data shed new light on the completeness of biostratigraphic and sedimentary records of the K-Pg at that site. The Nasilow section encompasses the upper Maastrichtian regional XII and XIII foraminiferal assemblage ...
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#1Zofia Dubicka (University of Warsaw)H-Index: 11
#2Hubert WierzbowskiH-Index: 17
Last. Agnieszka Pałczyńska (University of Warsaw)
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Abstract null null Oxygen and carbon isotope ratios of calcareous tests of foraminifera can serve as a tool for reconstructing seawater temperatures and bioproductivity. The foraminiferal isotope studies are, however, largely limited to Neogene, Paleogene and Cretaceous strata. In the current study are presented δ18O and δ13C values of well-preserved Jurassic representatives of different groups of benthic foraminifera: low-Mg calcite Lenticulina (Lagenata), high-Mg calcite Paleomiliolina (Miliol...
Source
#1Zofia Dubicka (University of Warsaw)H-Index: 11
#2Maciej J. Bojanowski (PAN: Polish Academy of Sciences)H-Index: 10
Last. Marcin Barski (University of Warsaw)H-Index: 7
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#1Zofia Dubicka (University of Warsaw)H-Index: 11
#2Maria Gajewska (University of Warsaw)
Last. Valeria I. Mikhalevich (RAS: Russian Academy of Sciences)H-Index: 2
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Foraminiferal wall microstructures, consistent with the molecular-based high-rank classification, are critical to understanding foraminiferal evolution and advanced taxonomic relationships. Although test structures are well documented for recent, Cenozoic, and some Mesozoic foraminifera, the diagnostic characteristics of Paleozoic taxa are largely unexplored. The majority of calcareous Paleozoic foraminifera have been assigned to the Fusulinata based on questionable homogeneously “microgranular”...
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#1Zofia Dubicka (University of Warsaw)H-Index: 11
#2Maria Gajewska (University of Warsaw)
Last. Johann Hohenegger (University of Vienna)H-Index: 26
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Abstract. Photosynthetically-active foraminifera are important carbonate producers contributing nearly 5 % of the reef and nearly 1 % of the total global calcium carbonate budgets. The abilities to be photosynthetically active, foraminifera realize by endosymbiosis with microalgae or by sequestering plastids (kleptoplasts) of digested algae. These ecological behaviors are a great advantage for the continued growth, survival of the hosts and enhance of foraminiferal calcification. Our data provid...
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#1Michał Rakociński (University of Silesia in Katowice)H-Index: 14
#2Agnieszka Pisarzowska (University of Silesia in Katowice)H-Index: 10
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Recently, the end-Devonian mass extinction (Hangenberg Crisis, 359 Ma) was identified as a first-order mass extinction, albeit not one of the "Big Five" events. Many marine and terrestrial organisms were affected by this crisis. The cause of this mass extinction is still conjectural and widely discussed. Here we report anomalously high mercury (Hg) concentrations from the South Tian Shan (Uzbekistan), together with correlation using conodont biostratigraphic data. Hg enrichment (to 5825 ppb) was...
3 CitationsSource
#1Maria Gajewska (University of Warsaw)
#2Zofia DubickaH-Index: 11
Last. Malcolm B. HartH-Index: 33
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Abstract. Jurassic (Bathonian–Oxfordian) planktic foraminifera from the epicontinental strata of the Polish Basin have been investigated. The palaeoecology, palaeobiogeography, and biostratigraphical potential of the recorded taxa are discussed. Four species are recorded: Conoglobigerina helvetojurassica (Haeusler, 1881), Globuligerina balakhmatovae (Morozova, 1961), G. bathoniana (Pazdrowa, 1969), and G. oxfordiana (Grigelis, 1958). This assemblage is probably the most diverse of those describe...
1 CitationsSource
#1Simina Dumitrita Dumitriu (UAIC: Alexandru Ioan Cuza University)
#2Zofia DubickaH-Index: 11
Last. Jolanta Paruch-KulczyckaH-Index: 2
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Seven Middle Miocene (Upper Badenian to Lower Sarmatian) sedimentary sections of the Central Paratethys, two from the Polish Carpathian Foredeep Basin (PCFB) and five from the Eastern Carpathian Foreland Basin (ECFB) of Romania and the Republic of Moldova have been analysed micropalaeontologically to better constrain the Badenian-Sarmatian Extinction Event, characterized by significant taxonomic impoverishment of both foraminifers and ostracods. Our studies show significant palaeoenvironmental c...
Source
#1Zbyszek Remin (University of Warsaw)H-Index: 5
Last. Joanna Roszkowska-ReminH-Index: 2
view all 5 authors...
The Nasilow section represents the uppermost part of the Middle Vistula River section (=MVS), a classical Polish extra-Carpathian Cretaceous section, and gives access to the Cretaceous-Paleogene (= K-Pg) boundary interval. Despite many valuable papers that have been published so far, our newly collected data shed new light on the completeness of biostratigraphic and sedimentary records of the K-Pg at that site. The Nasilow section encompasses upper Maastrichtian regional XII and XIII foraminifer...