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False rings of Pinus oocarpa and their relations with climate events in Eastern Guatemala
Presented by Mr. Paul SZEJNER on 15 May 2013 from 18:00 to 21:00
Type: Poster Presentation
Session: Poster Session + Reception
Board #: 36
We aim to assess the dendrochronological potential of Pinus oocarpa in eastern Guatemala in semiarid areas and investigate the intra-annual meteorological phenomena that might explain the formation of intra-annual rings. These results are based on the hypothesis that P. oocarpa is producing evident annual tree-rings due to climatic seasonality. This study was located at low latitudes 14º35´ N to 15º11´ N, in low elevations 940 to 1500 m asl. These new tree-ring chronologies were successfully dated and positively correlated with monthly rainfall. Tree-rings of P. oocarpa showed intra annual variations called “false rings”, finding variations within the early wood and the late wood as well, so we suggest that erratic meteorological events such as the Mid Summer Drought and strong cold fronts might be the cause of the formation of intra annual density variations.
Room: Salon E
- Mr. Paul SZEJNER Laboratorio de dendrocronología & Cambio Global, Universidad Austral de Chile, Valdivia.