The intermediate disturbance hypothesis applies to tropical forests, but disturbance contributes little to tree diversity.
The intermediate disturbance hypothesis (IDH) predicts local species diversity to be maximal at an intermediate level of disturbance. Developed to explain species maintenance and diversity patterns in species-rich ecosystems such as tropical forests, tests of IDH in tropical forest remain scarce, sm...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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2009
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| _version_ | 1797055026169905152 |
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| author | Bongers, F Poorter, L Hawthorne, W Sheil, D |
| author_facet | Bongers, F Poorter, L Hawthorne, W Sheil, D |
| author_sort | Bongers, F |
| collection | OXFORD |
| description | The intermediate disturbance hypothesis (IDH) predicts local species diversity to be maximal at an intermediate level of disturbance. Developed to explain species maintenance and diversity patterns in species-rich ecosystems such as tropical forests, tests of IDH in tropical forest remain scarce, small-scale and contentious. We use an unprecedented large-scale dataset (2504 one-hectare plots and 331,567 trees) to examine whether IDH explains tree diversity variation within wet, moist and dry tropical forests, and we analyse the underlying mechanism by determining responses within functional species groups. We find that disturbance explains more variation in diversity of dry than wet tropical forests. Pioneer species numbers increase with disturbance, shade-tolerant species decrease and intermediate species are indifferent. While diversity indeed peaks at intermediate disturbance levels little variation is explained outside dry forests, and disturbance is less important for species richness patterns in wet tropical rain forests than previously thought. |
| first_indexed | 2024-03-06T19:05:39Z |
| format | Journal article |
| id | oxford-uuid:150634b2-661f-446a-9b07-8a9de3557835 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:05:39Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:150634b2-661f-446a-9b07-8a9de35578352022-03-26T10:23:11ZThe intermediate disturbance hypothesis applies to tropical forests, but disturbance contributes little to tree diversity.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:150634b2-661f-446a-9b07-8a9de3557835EnglishSymplectic Elements at Oxford2009Bongers, FPoorter, LHawthorne, WSheil, DThe intermediate disturbance hypothesis (IDH) predicts local species diversity to be maximal at an intermediate level of disturbance. Developed to explain species maintenance and diversity patterns in species-rich ecosystems such as tropical forests, tests of IDH in tropical forest remain scarce, small-scale and contentious. We use an unprecedented large-scale dataset (2504 one-hectare plots and 331,567 trees) to examine whether IDH explains tree diversity variation within wet, moist and dry tropical forests, and we analyse the underlying mechanism by determining responses within functional species groups. We find that disturbance explains more variation in diversity of dry than wet tropical forests. Pioneer species numbers increase with disturbance, shade-tolerant species decrease and intermediate species are indifferent. While diversity indeed peaks at intermediate disturbance levels little variation is explained outside dry forests, and disturbance is less important for species richness patterns in wet tropical rain forests than previously thought. |
| spellingShingle | Bongers, F Poorter, L Hawthorne, W Sheil, D The intermediate disturbance hypothesis applies to tropical forests, but disturbance contributes little to tree diversity. |
| title | The intermediate disturbance hypothesis applies to tropical forests, but disturbance contributes little to tree diversity. |
| title_full | The intermediate disturbance hypothesis applies to tropical forests, but disturbance contributes little to tree diversity. |
| title_fullStr | The intermediate disturbance hypothesis applies to tropical forests, but disturbance contributes little to tree diversity. |
| title_full_unstemmed | The intermediate disturbance hypothesis applies to tropical forests, but disturbance contributes little to tree diversity. |
| title_short | The intermediate disturbance hypothesis applies to tropical forests, but disturbance contributes little to tree diversity. |
| title_sort | intermediate disturbance hypothesis applies to tropical forests but disturbance contributes little to tree diversity |
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