Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 365089
Title Estimating annual rainfall threshold for establishment of tree species in water-limited ecosystems using tree-ring data
Author(s) Lopez, B.C.; Holmgren, M.; Sabate, S.; Gracia, C.A.
Source Journal of Arid Environments 72 (2008)5. - ISSN 0140-1963 - p. 602 - 611.
Department(s) Resource Ecology
Publication type Refereed Article in a scientific journal
Publication year 2008
Keyword(s) el-nino - semiarid ecosystems - atacama desert - south-america - enso events - climate - vegetation - demography - australia - oscillation
Abstract In arid and semi-arid ecosystems, water availability is discontinuous, highly variable, and characterized by discrete pulse events separated by long periods of limited resource availability. Plant recruitment in these ecosystems is also episodic and dependent on the water available during and after these discrete rainfall events. Precipitation thresholds for plant establishment have been estimated mainly for herbaceous plants and tree seedlings, but extrapolation of short-term results based on seedlings to natural tree populations is difficult. Nevertheless, estimations of water availability thresholds for tree recruitment are essential for successful policies on forest conservation and restoration. We propose a methodology to estimate precipitation thresholds for adult tree populations using tree-ring series and precipitation data. We used this methodology with two Prosopis species from South America: Prosopis pallida and Prosopis chilensis. Results indicate a precipitation threshold of around 85 mm for the establishment of P. pallida trees, whereas the threshold for P. chilensis is likely to be much higher.
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