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Records found: 3  
Your query: Keywords = "biostratigrafia"
  1. TitleBiostratigraphy of the late Campanian - Maastrichtian of the Duwi Basin, Red Sea, Egypt
    Author infoOrabi H. Orabi ... [et al.]
    Author Orabi Orabi H. (25%)
    Co-authors Eldosouky Ahmed M. (15%)
    Abdelrahman Kamal (10%)
    El Gammal Reda M. (10%)
    Nallamuthu Malarkodi (10%)
    Fnais Mohammed S. (5%)
    Andráš Peter 1953- (25%) UMBFP04 - Katedra životného prostredia
    Source document Open Geosciences. Vol. 15, no. 1 (2023), pp. 1-26. - Warsaw : De Gruyter Poland, 2023
    Keywords foraminifery   biostratigrafia  
    Headings Geogr. Egypt
    Form. Descr.články - journal articles
    LanguageEnglish
    CountryPoland
    AnnotationDuring the Late Campanian, sea-level fluctuation occurred in the form of two chert bands and the topmost conglomeratic phosphate beds (CF8a zone). A great transgression event occurred associated with the global warming (CF8b zone) trend indicated by large double-keeled foraminifera as Globotruncana aegyptiaca Nakkady of oligotrophic conditions. Through the event of CF6/CF5 zones, a gradual increase in the relative abundance of Gublerina rajagopalani Govindan and Planoheterohelix planata (Cushman) and other heterohelicids have been shown to tolerate and thrive in a wide range of environmental conditions as in high-stress environments. Sea-level fall at the CF6 zone and the overlying CF5 boundary marked a warming climate for the Middle Maastrichtian Event. In the latest CF4 records, the beginning of the decrease in planktic/benthic ratio, globotruncanids, rugoglobigerinids, and heterohelicids indicating a fall in sea level coincided with the CF4/CF3 and the development of dark grey shales in a regressive regime. The observed low abundance of planktic specimens may be due to the presence of pyrite with black shale interval suggesting low oxygen condition. The latest zones CF3, CF2, and CF1 are generally characterized by heterohelicids blooms specially Planoheterohelix globulosa (Ehrenberg), and a gradual decrease in diversity associated with the warming phase before the K/Pg boundary event, implying high biotic stress to even absent of Guembelitria cretacea species through CF3–CF1 zones. Pseudotextularia elegans (Rzehak) occurs in the zones CF4 and CF2 warming of phases 1 and 2 of Deccan Trap Volcanic. The absence of P. elegans (Rzehak) in the zone (CF3) is postulated due to a tectonic cause (maximum cooling of Deccan Trap Volcanic) whereas its absence in the zone (CF1) was due to regression of phase 2.
    URLLink na plný text
    Public work category ADC
    No. of Archival Copy52900
    Catal.org.BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici
    Databasexpca - PUBLIKAČNÁ ČINNOSŤ
    ReferencesPERIODIKÁ-Súborný záznam periodika
  2. TitleAko reagujú subfosílne pakomáre (Chironomidae) v porovnaní s rozsievkami (Diatomaceae) na environmentálne zmeny prostredia: prípadová štúdia v jazerách Vysokých Tatier
    Author infoVladimír Kubovčík ... [et al.]
    Author Kubovčík Vladimír
    Co-authors Bitušík Peter 1957- UMBFP09 - Katedra biológie a ekológie
    Štefková Elena
    Svitok Marek
    Appleby Peter G.
    Poláková Lucia

    Another authors Neméthová Mária (Author)
    Source document Kongres slovenských zoológov a konferencia 14. Feriancove dni : zborník abstraktov : Smolenice, 1. - 3. december 2008. S. 30-31. - Bratislava : Slovenská zoologická spoločnosť : Katedra zoológie, PRIF UK v Bratislave : SNM - Prírodovedné múzeum : Slovenská ornitologická spoločnosť / BirdLife Slovakia, 2008
    Keywords biostratigrafia   globálne otepľovanie - global warming   acidifikácia   biostratigraphy   acidification  
    LanguageSlovak
    CountrySlovak Republic
    systematics 595.771
    Public work category AFH
    No. of Archival Copy16802
    Catal.org.BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici
    Databasexpca - PUBLIKAČNÁ ČINNOSŤ
    unrecognised

    unrecognised

  3. TitleSubfosílne pakomáre Starolesniankeho plesa ako doklad acidifikácie plies vo Vysokých Tatrách
    Author infoVladimír Kubovčík, Peter Bitušík, Marek Svitok
    Author Kubovčík Vladimír (34%)
    Co-authors Bitušík Peter 1957- (33%) UMBFP09 - Katedra biológie a ekológie
    Svitok Marek (33%)
    Source document Kongres slovenských zoológov a konferencia 14. Feriancove dni : zborník abstraktov : Smolenice, 1. - 3. december 2008. S. 31. - Bratislava : Slovenská zoologická spoločnosť : Katedra zoológie, PRIF UK v Bratislave : SNM - Prírodovedné múzeum : Slovenská ornitologická spoločnosť / BirdLife Slovakia, 2008
    Keywords biostratigrafia   acidifikácia   horské jazerá  
    LanguageSlovak
    CountrySlovak Republic
    systematics 59
    Public work category AFH
    No. of Archival Copy14657
    Catal.org.BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici
    Databasexpca - PUBLIKAČNÁ ČINNOSŤ
    unrecognised

    unrecognised



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