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13-17 May 2013
Tucson, Arizona
US/Arizona timezone
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Stable carbon isotopes in tree-rings reveal increases in water use efficiency of Fitzroya cupressoides forests from southern Chile

Presented by Mrs. Rocio URRUTIA JALABERT on 15 May 2013 from 18:00 to 21:00
Type: Poster Presentation
Board #: 4

Content

We present the first annual δ13C analyses from Fitzroya cupressoides, one of the oldest tree species in the world. Preliminary results from four series (since 1900) from trees growing in the Coastal (2) and Andean cordillera (2) indicate a significant increasing trend in intrinsic water use efficiency that is especially strong during the last 50 years. Tree growth data from tree-ring chronologies in both areas show an increasing growth trend in the Andes Cordillera but no trend in the Coastal Range. This can be interpreted as possibly a CO2 fertilization effect in the Andes, likely accompanied by other climatic effects that have not yet been detected. Additional analyses from both areas and detailed examination of the climate- isotope relationships will be used to improve understanding of the long term response of this long-lived species to recent environmental changes.

Place

Location: DoubleTree
Room: Salon E

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