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Spannl, S.; Volland, F.; Pucha Cofrep, D.A.; Peters, T.; Cueva, E. &amp; Br&auml;uning, A. (2016): <b>Climate variability, tree increment patterns and ENSO-related carbon sequestration reduction of the tropical dry forest species Loxopterygium huasango of Southern Ecuador</b>. <i>Trees Structure and Function</i> <b>e</b>(e), e<br>DOI: <a href="http://dx.doi.org/DOI 10.1007/s00468-016-1362-0" target="_blank">http://dx.doi.org/DOI 10.1007/s00468-016-1362-0</a>.

Resource Description

Title: Climate variability, tree increment patterns and ENSO-related carbon sequestration reduction of the tropical dry forest species Loxopterygium huasango of Southern Ecuador
FOR816dw ID: 1467
Publication Date: 2016-02-16
License and Usage Rights: PAK 823-825 data user agreement. (www.tropicalmountainforest.org/dataagreementp3.do)
Resource Owner(s):
Individual: Susanne Spannl
Contact:
Individual: Franziska Volland
Contact:
Individual: Darwin Alexander Pucha Cofrep
Contact:
Individual: Thorsten Peters
Contact:
Individual: Eduardo Cueva
Contact:
Individual: Achim Bräuning
Contact:
Abstract:
We present the first multi-year long time series<br/> of local climate data in the seasonally dry tropical forest in<br/> Southern Ecuador and related growth dynamics of Loxopterygium<br/> huasango, a deciduous tree species. Local climate<br/> was investigated by installing an automatically<br/> weather station in 2007 and the daily tree growth variability<br/> was measured with high-resolution point dendrometers.<br/> The climatic impact on growth behaviour was<br/> evaluated. Hydro-climatic variables, like precipitation and<br/> relative humidity, were the most important factors for<br/> controlling tree growth. Changes in rainwater input affected<br/> radial increment rates and daily amplitudes of stem<br/> diameter variations within the study period from 2009 to<br/> 2013. El Nin˜o Southern Oscillation (ENSO) related<br/> variations of tropical Pacific Ocean sea surface temperatures<br/> influenced the trees’ increment rates. Average radial<br/> increments showed high inter-annual (up to 7.89 mm) and<br/> inter-individual (up to 3.88 mm) variations. Daily amplitudes<br/> of stem diameter variations differed strongly between<br/> the two extreme years 2009 (wet) and 2011 (dry). Contrary<br/> to 2009, the La Nin˜a drought in 2011 caused a rapid<br/> reduction of the daily amplitudes, indicating a total cessation<br/> (‘growth collapse’) of stem increment under ENSOrelated<br/> drought conditions and demonstrating the high<br/> impact of climatic extreme events on carbon sequestration<br/> of the dry tropical forest ecosystem.
Keywords:
| Ecuador | dendrometer | dendroecology | Climate variability | La Nina drought | Seasonally dry tropical forest |
Literature type specific fields:
ARTICLE
Journal: Trees Structure and Function
Volume: e
Issue: e
Page Range: e
Publisher: Springer
ISSN: 0931-1890
Metadata Provider:
Individual: Susanne Spannl
Contact:
Online Distribution:
Download File: http://www.lcrs.de/publications.do?citid=1467


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