Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "Krajcarz, Maciej T." wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Application of the weathering parameters of bones to stratigraphical interpretation of the sediments from two caves (Deszczowa Cave and Nietoperzowa Cave, Kraków-Częstochowa Upland, Poland)
Autorzy:
Krajcarz, Maciej T.
Madeyska, Teresa
Powiązania:
https://bibliotekanauki.pl/articles/2026726.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cave sediments
Palaeolithic
fossil bones weathering
rubble weathering
palaeoenvironment reconstruction
histological index
Opis:
Anal y sis of weath er ing pa ram e ters of bones from cave de pos its is pre sented as a use ful tool of palaeoenvironmental re con struc tion. As an ex am ple, we stud ied pro files of sed i ments in two Palaeo lithic sites: Nietoperzowa Cave and Deszczowa Cave. Our stud ies in cluded histological and EDS anal y ses of bone rem nants found in these pro files. This method al lowed us to re con struct the changes of palaeotemperature and palaeohumidity, and fi nally the climatostratigraphy of sed i ments. The re sults pre sented here put a new light onto the stra tig ra phy of Deszczowa Cave’s fill ing. In par tic u lar, be sides the Vistulian sed i ments (MIS 2–5d), we con firmed the pres ence of lay ers formed dur ing the Pen ul - ti mate Gla ci ation (MIS 6) and Eemian Inter gla cial (MIS 5e).
Źródło:
Studia Quaternaria; 2010, 27; 43-54
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intra-individual variability of dental enamel δ13C and δ18O values in Late Pleistocene cave hyena and cave bear from Perspektywiczna Cave (southern Poland)
Autorzy:
Czernielewski, Michał
Krajcarz, Magdalena
Krajcarz, Maciej T.
Powiązania:
https://bibliotekanauki.pl/articles/2025034.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Pleistocene
MIS 3
stable isotopes
Perspektywiczna Cave
Kraków-Częstochowa Upland
Opis:
An important source of palaeoecological and palaeoenvironmental information is intra-specimen variability of isotopic composition of mammal tooth enamel. It reflects seasonal or behavioral changes in diet and climate occurring during a life of the animal. While well-known in ungulates, in carnivorans this variability is poorly recognized. However, carnivoran remains are amongst the most numerous in the Pleistocene fossil record of terrestrial mammals, so their isotopic signature should be of particular interest. The aim of the study was to verify if enamel of a fossil cave hyena (Crocuta crocuta spelaea) and a cave bear (Ursus ingressus) records any regular inter- or intra-tooth isotopic variability. We examined intra-individual variability of δ13C and δ18O values in permanent cheek teeth enamel of fossil cave hyena and cave bear from the site of the Perspektywiczna Cave (southern Poland). We conclude that the isotopic variability of the cave hyena is low, possibly because enamel mineralization took place when the animals still relied on a uniform milk diet. Only the lowermost parts of P3 and P4 enamel record a shift toward an adult diet. In the case of the cave bear, the sequence of enamel formation records periodic isotopic changes, possibly correlating with the first seasons of the animal life.
Źródło:
Studia Quaternaria; 2020, 37; 121-128
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary suggestions on the Pleistocene palaeovegetation around the Biśnik Cave (Częstochowa Upland, Poland) based on studies of molecular fossils from cave sediments
Autorzy:
Krajcarz, Maciej T.
Gola, Marek R.
Cyrek, Krzysztof J.
Powiązania:
https://bibliotekanauki.pl/articles/2026713.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cave sediments
biomarkers
n-alkanes
gas chromatography
palaeoenvironment
Opis:
Bioenik Cave is an im por tant site of Mid dle Palaeo lithic, with the lon gest se quence of Neanderthal set tle ment phases in Cen tral Eu rope. In the pre vi ous stud ies of the Bioenik sed i ments, dif fer ent el e ments of palaeoenvironment in the pe ri - ods of Neanderthal oc cu pa tion have been re cog nised, ex cept of palaeovegetation, which could not be de rived be cause of lack of pre served plant mi cro- or macrofossils. The cur rent work is an at tempt to re con struct palaeovegetation in vi - cin ity of the Bioenik Cave, us ing anal y sis of com po si tion of plant-de rived n-al kanes, pre served in sed i ments. In our study, we an a lyzed one sam ple from each of the sed i ment’s lay ers 11 – 19c (early Late Pleis to cene and late Mid dle Pleis to cene). Abun dant n-al kanes (mostly n-C27, n-C29 and n-C31) were found in all the sam pled lay ers ex cept for the lay ers 12, 16 and 19d, show ing no al kanes at all. There is clear di ver si fi ca tion of n-al kanes com po si tion and CPI (car bon pref er ence in dex) val ues be tween lay ers. Anal y sis of this com po si tion, al lows us to claim that the lay ers 11 and 14 were ac cu mu lated when the cave’s vi cin ity was cov ered by dense co nif er ous for ests, hence upon warm cli mate. The lay ers 19, 19a lower, 19b and 19c, pre sumably orig i nated dur ing cold pe ri ods when open wood lands or grass lands dom i nated. The other an a lyzed lay ers could be con nected with in ter me di ate veg e ta tion in form of open wood land. How ever, not all of the achieved re sults stay in com pli ance with the ac tual stra tig ra phy, es tab lished bas ing on lithological data and palaeo ec ol ogy of fos sil fauna, and we hope that ex pla na tion of this dis crep ancy would be pos si ble af ter more ex ten sive stud ies of mo lec u lar fos sils are done.
Źródło:
Studia Quaternaria; 2010, 27; 55-61
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies