Tree diversity in tropical rain forests: a validation of the intermediate disturbance hypothesis
| Autor: | Jean-François Molino, Daniel Sabatier |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Canopy
Régime lumineux Disturbance (geology) Time Factors Germination Models Biological F30 - Génétique et amélioration des plantes Trees Soil Tropical climate Animals Ecosystem Forêt tropicale humide Silviculture Besoin en lumière Tropical Climate Multidisciplinary Méthode statistique Ecology U10 - Informatique mathématiques et statistiques Species diversity Reproducibility of Results K10 - Production forestière French Guiana Intermediate Disturbance Hypothesis Seeds Sunlight Environmental science Species richness Biodiversité Seasons Modèle mathématique |
| Zdroj: | Science |
| ISSN: | 0036-8075 |
| Popis: | The “intermediate disturbance hypothesis,” which postulates maximum diversity at intermediate regimes of disturbance, has never been clearly proved to apply to species-rich tropical forest tree communities and to local-scale canopy disturbances that modify light environments. This hypothesis was tested on a sample of 17,000 trees in a Guianan forest, 10 years after a silvicultural experiment that added to natural treefall gaps a wide range of disturbance intensities. Species richness, standardized to eliminate density effects, peaked at intermediate disturbance levels, particularly when disturbance intensity was estimated through the percentage of stems of strongly light-dependent species. |
| Databáze: | OpenAIRE |
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