Vegetation changes during the past 1000 years in the southern Andes (Coropuna, Peru)

2012 ◽  
Vol 279-280 ◽  
pp. 258 ◽  
Author(s):  
Adèle Kuentz
Forests ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 983 ◽  
Author(s):  
Adrian Patrut ◽  
Stephan Woodborne ◽  
Roxana T. Patrut ◽  
Grant Hall ◽  
Laszlo Rakosy ◽  
...  

The year 2016 witnessed the fall of a symbol of the botanical world: the historic Chapman baobab of Botswana. This article presents the results of our investigation of the standing and fallen tree. The Chapman baobab had an open ring-shaped structure composed of six partially fused stems. Several wood samples collected from the stems prior and after their collapse were analysed by using radiocarbon dating. The radiocarbon date of the oldest sample was 1381 ± 22 BP, which corresponds to a calibrated age of 1345 (+10, −15) calendar years. The dating results show that the six stems of the Chapman baobab belonged to three different generations, which were 1350–1400, 800–1000 and 500–600 years old. The growth rate variation of the largest and oldest stem is presented and correlated with the climate evolution in the area over the past 1000 years. The factors that determined the sudden fall and death of the Chapman baobab are also presented and discussed.


The Holocene ◽  
2010 ◽  
Vol 20 (7) ◽  
pp. 1105-1111 ◽  
Author(s):  
Jonathan Holmes ◽  
Carol Arrowsmith ◽  
William Austin ◽  
John Boyle ◽  
Elizabeth Fisher ◽  
...  

The Holocene ◽  
2019 ◽  
Vol 30 (3) ◽  
pp. 474-478 ◽  
Author(s):  
Jonathan Dombrosky

Inferences about how an ecosystem has changed through time often rely on longitudinal records of species characteristics or niche parameters, and stable isotope analysis is a common tool employed to study changes in an organism’s niche. One of the most frequently used stable isotope measures is δ13C, a ratio of 13C to 12C. However, applying δ13C to historical samples comes with some methodological hurdles. One such hurdle is correcting for the 13C Suess effect or the change in atmospheric δ13C due to increased anthropogenic CO2 emissions. The change in the amount of carbon isotopes in the atmosphere through time can confound the study of historical shifts in species characteristics. No standard way of correcting for the 13C Suess effect has been suggested despite this problem. Here, I propose a standard 13C Suess correction model for the past ~1000 years using three prehistoric/historic records of atmospheric δ13C.


2004 ◽  
Vol 23 (20-22) ◽  
pp. 2063-2074 ◽  
Author(s):  
Edward R. Cook ◽  
Jan Esper ◽  
Rosanne D. D’Arrigo

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