Pucha Cofrep, D.A.; Peters, T. & Bräuning, A. (2015): <b>Wet season precipitation during the past 120 years reconstructed from tree rings of a tropical dry forest in Southern Ecuador</b>. <i>Global and Planetary Change</i> <b>133</b>, 65–78.
Resource Description
Title:
Wet season precipitation during the past 120 years reconstructed from tree rings of a tropical dry forest in Southern Ecuador
FOR816dw ID:
1407
Publication Date:
2015-08-12
License and Usage Rights:
PAK 823-825 data user agreement. (www.tropicalmountainforest.org/dataagreementp3.do)
email:
achim.braeuning <at> fau.de
University of Erlangen-Nuremberg
Institute of Geography
Wetterkreuz 15
91058 Erlangen
Germany
Abstract:
From 10 selected tree species, Bursera graveolens and Maclura tinctoria exhibited distinct annual and crossdatable tree-rings. It was possible to synchronize individual tree-ring series and to establish two tree-ring chronologies of 203 and 87 years length, respectively. The characteristic ENSO frequency band is reflected in wavelet<br/>
power spectra of both chronologies. Both species showa strong correlation between ringwidth and precipitation of thewet season (January–May). Strong El Niño events (1972, 1983 and 1998) lead to strong growth responses in the tree-ring chronologies, whereas ‘normal’ ENSO events do not trigger long-lasting growth responses. The first ring-width based wet-season precipitation reconstruction for the past 103 years was developed. Statistical and spatial correlation analysis verified the skills of the reconstructed precipitation which captures a great part of the Rainfall Index over the land area of Ecuador and the equatorial Pacific. Furthermore, teleconnections with central Pacific precipitation and SST patterns were found.
Keywords:
| Ecuador | precipitation | tree growth | wood anatomy | dendroecology | el nino | ENSO | tree rings | dendrochronology | dry forest |
Literature type specific fields:
ARTICLE
Journal:
Global and Planetary Change
Volume:
133
Page Range:
65–78
Publisher:
Elsevier
ISSN:
0921-8181
Metadata Provider:
Individual:
Achim Bräuning
Contact:
email:
achim.braeuning <at> fau.de
University of Erlangen-Nuremberg
Institute of Geography
Wetterkreuz 15
91058 Erlangen
Germany
