STATISTICAL PREDICTION OF THE EXTINCTION TIME OF EXTINCT MAMMALIAN SPECIES IN ANATOLIA

Download

elcin-eksi.pdf

Date

2023-2-02

Author

Ekşi, Elçin

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

2523
views

185
downloads

Extinction and origination of species are fundamental to the process of evolution, a dynamic force that shapes the history of life. These processes are studied with different motivations in both paleontology and ecology. In some cases, obtaining sufficient population data for the studied species is impossible. For example, fossils of an extinct species or data from an endangered and rare species offer limited analysis. In such cases, it is possible to predict the extinction time of a species by analyzing the ordered time point data in which the species was detected in nature or stratigraphic sections using statistical methods. In this study, statistical estimation was carried out to reveal the extinction date of the wild mammalian species that lived and went extinct in Anatolia ten thousand years ago. Archaeological records of non- domesticated animals obtained from literature and databases were brought together. The ages of the archaeological remains were used for statistical analysis. Species records can be evaluated as a Poisson process and modeled according to various distributions or independently of the distribution to estimate when they disappeared. In this study, we investigate the basic features of the compiled archeological species records using a histogram, PPCC test, and Q-Q graph and whether the data were uniformly distributed. The study resulted in a list of mammalian species that became extinct in the last ten thousand years and calculated the date on which the species went extinct in the past with a 95% confidence limit. In addition, the difference between extinction date estimation methods according to the characteristics of the data has been revealed.

Subject Keywords

Extinction, Extinct Species, Extinction Time Estimation, Optimal Linear Estimation, Confidence Intervals For Temporal Range

URI

https://hdl.handle.net/11511/102563

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Transcriptomic insights into human brain evolution: acceleration, neutrality, heterochrony Somel, Mehmet; Liu, Xiling (Elsevier BV, 2014-12-01) Primate brain transcriptome comparisons within the last 12 years have yielded interesting but contradictory observations on how the transcriptome evolves, and its adaptive role in human cognitive evolution. Since the human-chimpanzee common ancestor, the human prefrontal cortex transcriptome seems to have evolved more than that of the chimpanzee. But at the same time, most expression differences among species, especially those observed in adults, appear as consequences of neutral evolution at cis-regulatory...
Mitochondrial DNA Diversity of Modern, Ancient and Wild Sheep (Ovis gmelinii anatolica) from Turkey: New Insights on the Evolutionary History of Sheep Demirci, Sevgin; Bastanlar, Evren Koban; Dagtas, Nihan Dilsad; Pişkin, Evangelia; ENGİN, ATİLLA; Ozer, Fusun; Yuncu, Eren; Dogan, Sukru Anil; TOGAN, İNCİ ZEHRA (2013-12-11) In the present study, to contribute to the understanding of the evolutionary history of sheep, the mitochondrial (mt) DNA polymorphisms occurring in modern Turkish native domestic (n = 628), modern wild (Ovis gmelinii anatolica) (n = 30) and ancient domestic sheep from Oylum Hoyuk in Kilis (n = 33) were examined comparatively with the accumulated data in the literature. The lengths (75 bp/76 bp) of the second and subsequent repeat units of the mtDNA control region (CR) sequences differentiated the five hapl...
Patterns of Species Ranges, Speciation, and Extinction Birand, Aysegul; Vose, Aaron; Gavrilets, Sergey (2012-01-01) The exact nature of the relationship among species range sizes, speciation, and extinction events is not well understood. The factors that promote larger ranges, such as broad niche widths and high dispersal abilities, could increase the likelihood of encountering new habitats but also prevent local adaptation due to high gene flow. Similarly, low dispersal abilities or narrower niche widths could cause populations to be isolated, but such populations may lack advantageous mutations due to low population si...
Tectonic and thermal evolution of a Metamorphic Core Complex: the Menderes Massif (Western Turkey) Bozkurt, Erdin (null; 2018-04-08) Understanding the origin of lithospheric- and crustal-scale thermal anomalies requires the study of the long-term thermo-tectonic evolution at large spatial-temporal scales. For instance, cold plate-converging settings (i.e. involving subduction) may exhume first colder units still preserving HP-LT assemblages from the earlier nappe stack, and then HT-LP parageneses in the post-orogenic setting. In both cases, the thermal evolution of such assemblages depends primarily on whether the basement is involved in...
CLADISTIC TESTS OF MONOPHYLY AND RELATIONSHIPS OF BIOSTRATIGRAPHICALLY SIGNIFICANT CONODONTS USING MULTIELEMENT SKELETAL DATA - LOCHRIEA HOMOPUNCTATUS AND THE GENUS LOCHRIEA Atakul-Oezdemir, Ayse; Purnell, Mark A.; Riley, Nicholas J. (Wiley, 2012-11-01) Since the 1960s, huge progress has been made in reconstructing the multielement skeletons of conodont species and developing a biologically defensible taxonomy. Nevertheless, a widespread prejudice remains that certain parts of the conodont skeleton, particularly the P-1 elements, are more informative than others with regard to taxonomy and evolutionary relationships. Here, we test these views. A new partial multielement reconstruction of the skeleton of the biostratigraphically significant conodont origina...

Citation Formats

E. Ekşi, “STATISTICAL PREDICTION OF THE EXTINCTION TIME OF EXTINCT MAMMALIAN SPECIES IN ANATOLIA,” M.S. - Master of Science, Middle East Technical University, 2023.