4 documents found in 53ms
# 1
Michael Holthausen
Abstract: This master’s thesis deals with species distribution modeling (SDM) for eight selected prey animals of the Neanderthals and the anatomically modern human within the framework of the Collaborative Research Center 806 ("Our way to Europe"). This research was realized for three methods in three climatically different time slices during the Late Pleistocene. One profile method, one regression method and one machine learning method were used. A model was developed that performs these three methods in order to obtain a potential distribution of the paleofauna in the Late Pleistocene and to link it to the dispersal of humans in this region. The results show that all three methods predict conditions for the presence of the species which may have hunted from both Neanderthals and anatomically modern humans. However, there are differences in the predicted regions between the individual methods for each species. Another task was to determine the best performing method. Based on this work, MaxEnt, a machine learning method, emerged as the best performing method among the applied methods.
# 2
Michael Holthausen
Abstract: This dataset is related to the master's thesis "Distribution modeling of paleofauna in the Western Mediterranean between the Heinrich events H5 and H4". The aim of the work was to generate a model for species distribution in the Western Mediterranean and to determine the best method in this context. By applying three different methods (Bioclim, GLM, MaxEnt) from the dismo package, R was used to predict the distribution of eight cold-adapted prey species in the Late Pleistocene. The Geographic Information System (GIS) QGIS was used to produce the maps which are discussed in the master's thesis and presented there in extracts. The complete dataset is stored within this entry. The supplementary data (supp_dat.zip) contains the result maps of all species and all time slices as image file, the source code in R, and the raw value results as GeoTIFF. Additional data (add_dat.zip) contains all output files generated through the modeling process. References Hijmans, R. J., Elith, J., 2017. Species distribution modeling with R. https://cran.r-project.org/web/packages/dismo/vignettes/sdm.pdf, 2018-9-12. QGIS Development Team, 2018. QGIS Geographic Information System (QGIS) Software, Version 3.2. Op en Source Geospatial Foundation. http://qgis.osgeo.org, 2018-9-12 R Core Team, 2018. R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing. https://www.R- project.org, 2018-9-12.
# 3
Zickel,, Mirijam, • Gehlen,, Birgit, • Willmes,, Christian,
Abstract: The GIS dataset contains 19 recent geological formation/ deposit shapefiles that keep lithic raw material used during the Mesolithic also as the Paleolithic and Neolithic period. The geological data was gained from published digital maps (Carte géologique du Grand-Duché de Luxembourg 1998, GÜK200 2007, NRW: IS GK 100 DS 2009, Surface lithology (INSPIRE) 2016) whereas archaeological site inventory and lithic raw material distribution data was gained during the D4 project phase (CRC 806). Further, out of the D4 project database 6 additive datasets where created describing the location of a singular Meuse gravel flint deposit in Hambach, former tertiary quartzite and chalcedony sources (Floss 1994), outcrop locations from raw material surveys (e.g. Gehlen et al. 2015) also as extraction sites. The spatial analysis of lithic raw material sources is a valuable tool to identify and quantify Mesolithic foraging areas through different stages (e.g. Early Mesolithic). Based on the combination of geological data and the D4 sites database potential Mesolithic foraging areas could have been calculated for the D4 study area located in Germany (NRW, Hessen, Rhineland-Palatinate, Saarland), Luxembourg, Belgium (Wallonia) and the southern Netherlands (Limburg).
# 4
Mirijam, Zickel, • Martin, Kehl, • Jürgen, Richter,
Abstract: -Die Blazi Cave im nordalbanischen Karst liegt auf einer Höhe von 276 m (ü. NN) und ist ca. 50 km von der Adriaküste entfernt. Das Portal ist nach Südwesten orientiert. -Sie ist durch die Arbeiten von Prendi
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