IDENTIFYING DIETARY AND MIGRATORY PATTERNS OF ILLINOIS MAMMUTHUS PRIMIGENIUS POPULATIONS USING ISOTOPE ANALYSIS OF CARBON, OXYGEN, AND STRONTIUM

2019 ◽  
Author(s):  
Matthew Harrington ◽  
◽  
Chris Widga ◽  
Alan D. Wanamaker ◽  
Douglas Walker
2012 ◽  
Vol 90 (10) ◽  
pp. 1243-1250 ◽  
Author(s):  
E.R. Britzke ◽  
S.C. Loeb ◽  
C.S. Romanek ◽  
K.A. Hobson ◽  
M.J. Vonhof

Understanding seasonal movements of bats is important for effective conservation efforts. Although female Indiana bats ( Myotis sodalis Miller and Allen, 1928) have been documented to migrate >500 km, knowledge of their migratory patterns is still extremely limited. We used the relationship between latitude and stable hydrogen isotope ratio in bat hair (δ2Hhair) to estimate the north–south extent of the summer range (catchment area) of bats hibernating in 14 Indiana bat hibernacula in eight states throughout its range. Range of δ2Hhair values varied substantially among hibernacula, suggesting large differences among sites in the north–south distance travelled by bats between summer and winter habitats. In particular, hibernacula in the southern portion of the range had greater catchment areas than those in the central and northern portions of the range. Variability in movement distances among sites was not associated with the number of hair samples analyzed or colony size. Significant year-to-year variation (2007–2008 to 2008–2009) in the distribution of δ2Hhair for two sites in Tennessee was observed. Currently, hibernacula considered important for species conservation are largely determined by population size, but our results suggest that migratory diversity should also be considered.


Author(s):  
I. Zolnikov ◽  
◽  
A. Vybornov ◽  
A. Anoikin ◽  
A. Postnov ◽  
...  

In the course of studies conducted by IAET SB RAS in the Lower Ob in 2016–2019, the understanding of the conditions for settlement of the Paleolithic population in the north of Western Siberia was significantly supplemented. Dating of a series of paleontological finds was carried out at the "Accelerated mass spectrometer of the Budker Institute of Nucle- ar Physics of SB RAS". The dates obtained show the distribution of the main representatives of the Upper Pleistocene fauna of Subarctica: Mammuthus primigenius – 50,000–15,000 BP, Coelodonta antiquitatis – 43,000–38,000 BP and 27,000–25,000 BP, Rangifer tarandus, Equus ferus – 40,000–10,000 BP, Bison sp. – 50,000–40,000 BP, Ovibos moschatus – 41,000–32,000 BP.


2020 ◽  
Vol 4 (3) ◽  
pp. 131-140
Author(s):  
V.V. Plotnikov ◽  
◽  
A.V. Protopopov ◽  
T.F. Petrova ◽  
◽  
...  

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