The ecoclimatology of Danum, Sabah, in the context of the world's rainforest regions, with particular reference to dry periods and their impact

Climatic records for Danum for 1985 to 1998, elsewhere in Sabah since 1879, and long monthly rainfall series from other rainforest locations are used to place the climate, and particularly the dry period climatology, of Danum into a world rainforest context. The magnitude frequency and seasonality o...

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Bibliographic Details
Published in:Philosophical transactions of the Royal Society of London. Series B. Biological sciences 1999-11, Vol.354 (1391), p.1869-1883
Main Authors: Walsh, R. P. D., Newbery, D. M.
Format: Article
Language:English
Subjects:
Borneo
Climate change
Climate models
Climatic Change
Disasters
Drought
Drought Magnitude Frequency
Ecology
Ecosystem
El Nino
El Nino Southern Oscillation (ENSO)
Embolisms
Long-term Dynamics and Change
Malaysia
Rain
Tree-Water Relationships
Trees
Tropical Climate
Tropical forests
Tropical rain forests
Tropical Rainforest
Understory
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Summary:Climatic records for Danum for 1985 to 1998, elsewhere in Sabah since 1879, and long monthly rainfall series from other rainforest locations are used to place the climate, and particularly the dry period climatology, of Danum into a world rainforest context. The magnitude frequency and seasonality of dry periods are shown to vary greatly within the world's rainforest zone. The climate of Danum, which is aseasonal but subject, as in 1997 to 1998, to occasional drought, is intermediate between less drought-prone north-western Borneo and the more drought-prone east coast. Changes through time in drought magnitude frequency in Sabah and rainforest locations elsewhere in South-East Asia and in the Neotropics are compared. The 1997 to 1998 ENSO-related drought event in Sabah is placed into a historical context. The effects of drought on tree growth and mortality in the tropics are assessed and a model relating intensity and frequency of drought disturbance to forest structure and composition is discussed.
ISSN:0962-8436
1471-2970
DOI:10.1098/rstb.1999.0528