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| Titel |
Relating ring width of Mediterranean evergreen species to seasonal and annual variations of precipitation and temperature |
| VerfasserIn |
W. Nijland, E. Jansma, E. A. Addink, M. Domínguez Delmás, S. M. Jong |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 8, no. 5 ; Nr. 8, no. 5 (2011-05-13), S.1141-1152 |
| Datensatznummer |
250005812
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| Publikation (Nr.) |
 copernicus.org/bg-8-1141-2011.pdf |
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| Zusammenfassung |
| Plant growth in Mediterranean landscapes is limited by the typical
summer-dry climate. Forests in these areas are only marginally productive
and may be quite susceptible to modern climate change. To improve our
understanding of forest sensitivity to annual and seasonal climatic
variability, we use tree-ring measurements of two Mediterranean evergreen
tree species: Quercus ilex L. and Arbutus unedo L.
We sampled 34 stems of these species on three different
types of substrates in the Peyne study area in southern France. The
resulting chronologies were analysed in combination with 38 yr of monthly
precipitation and temperature data to reconstruct the response of stem
growth to climatic variability. Results indicate a strong positive response
to May and June precipitation, as well as a significant positive influence
of early-spring temperatures and a negative growth response to summer heat.
Comparison of the data with more detailed productivity measurements in two
contrasting years confirms these observations and shows a strong
productivity limiting effect of low early-summer precipitation. The results
show that tree-ring data from Q.ilex and A.unedo can provide valuable information about
the response of these tree species to climate variability, improving our
ability to predict the effects of climate change in Mediterranean
ecosystems. |
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