Taphonomic and paleoecological aspects of large mammals from Sudety Mts (Silesia, SW Poland), with particular interest to the carnivores

Abstract

The rediscovery of old collections and revision of the fossil material from more than 30 Sudeten caves and rock shelters allow reconstructing the faunal changes during the Late Pleistocene and the Holocene. We found that the composition of mammalian assemblages of Sudety Mts during MIS 3 differed significantly from the Holocene and modern one, and reflected the colder climate. Mammals belonging to the Mammuthus-Coelodonta faunal complex inhabited open flattened lowlands (Bohemia, Moravia and Silesia) surrounding Sudeten area. Several large carnivores (Canis lupus spelaeus, Ursus arctos priscus, Ursus ingressus, Gulo gulo, Mustela eversmanii, Panthera spelaea spelaea, Crocuta crocuta spelaea) as well as herbivores (Mammuthus primigenius, Coleodonta antiquitatis, Megaloceros giganteus, Rangifer tarandus, large form of Equus ferus, Bison priscus, and Ovibos moschatus) made up the core of this assemblage.Our studies showed that most of these faunal elements were also present in Sudety Mts, despite the previous opinion that these mountains formed an effective natural barrier during the Late Pleistocene. Besides, it seems that during cold phases they could be refugees for forest animals, which were also present in the Mammuthus-Coelodonta faunal complex, but lower quantities. They avoided flat treeless Silesian lowlands and concentrated in mountainous and hilly regions. In this context, during the Late Pleistocene Sudety Mts were a “forested island” confined to elevated areas or river valleys. Range extensions, contractions, and continuations on different scales resulted in mammalian paleoassemblages which differed in particular from the modern ones.The analysis of the mammal faunas from Sudeten sites revealed that there were three heterochronous mammalian faunal complexes replaced each other throughout the Late Pleistocene and the Holocene. Differences between these assemblages resulted from changes in morphology, areas and extinction of several species. The existence of different faunal elements was distinguished by the chronological and geographical change in the structure of mammalian assemblages. At the end of MIS 3 most of the cold-adapted species from the Mammuthus-Coelodonta faunal complex like Ursus ingressus, Panthera spelaea spelaea, Coelodonta antiquitatis, Bison priscus, and Megaloceros giganteus disappeared.During the second phase, at the latest Pleistocene and the Holocene boundary, all the species of the Mammuthus-Coelodonta faunal complex still not became extinct. Several species from this assemblage disappeared later in the Holocene. It should be noted that the role of the human in the changes of faunal complexes and species extinctions during the Late Pleistocene and the Holocene in the Sudety Mts cannot be so far demonstrated.