An architectural understanding of natural sway frequencies in trees
The relationship between form and function in trees is the subject of a longstanding debate in forest ecology and provides the basis for theories concerning forest ecosystem structure and metabolism. Trees interact with the wind in a dynamic manner and exhibit natural sway frequencies and damping pr...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Royal Society
2019
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/112105 |
| _version_ | 1855514178154921984 |
|---|---|
| author | Jackson, T. Shenkin, A. Moore, J. Bunce, A. Emmerik, T. van Kane, B. Burcham, D. James, K. Selker, J. Calders, K. Origo, N. Disney, M. Burt, A. Wilkes, P. Raumonen, P. González de Tanago Menaca, J. Lau, A. Herold, M. Goodman, R.C. Fourcaud, T. Malhi, Y. |
| author_browse | Bunce, A. Burcham, D. Burt, A. Calders, K. Disney, M. Emmerik, T. van Fourcaud, T. González de Tanago Menaca, J. Goodman, R.C. Herold, M. Jackson, T. James, K. Kane, B. Lau, A. Malhi, Y. Moore, J. Origo, N. Raumonen, P. Selker, J. Shenkin, A. Wilkes, P. |
| author_facet | Jackson, T. Shenkin, A. Moore, J. Bunce, A. Emmerik, T. van Kane, B. Burcham, D. James, K. Selker, J. Calders, K. Origo, N. Disney, M. Burt, A. Wilkes, P. Raumonen, P. González de Tanago Menaca, J. Lau, A. Herold, M. Goodman, R.C. Fourcaud, T. Malhi, Y. |
| author_sort | Jackson, T. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The relationship between form and function in trees is the subject of a longstanding debate in forest ecology and provides the basis for theories concerning forest ecosystem structure and metabolism. Trees interact with the wind in a dynamic manner and exhibit natural sway frequencies and damping processes that are important in understanding wind damage. Tree-wind dynamics are related to tree architecture, but this relationship is not well understood. We present a comprehensive view of natural sway frequencies in trees by compiling a dataset of field measurement spanning conifers and broadleaves, tropical and temperate forests. The field data show that a cantilever beam approximation adequately predicts the fundamental frequency of conifers, but not that of broadleaf trees. We also use structurally detailed tree dynamics simulations to test fundamental assumptions underpinning models of natural frequencies in trees. We model the dynamic properties of greater than 1000 trees using a finite-element approach based on accurate three-dimensional model trees derived from terrestrial laser scanning data. We show that (1) residual variation, the variation not explained by the cantilever beam approximation, in fundamental frequencies of broadleaf trees is driven by their architecture; (2) slender trees behave like a simple pendulum, with a single natural frequency dominating their motion, which makes them vulnerable to wind damage and (3) the presence of leaves decreases both the fundamental frequency and the damping ratio. These findings demonstrate the value of new three-dimensional measurements for understanding wind impacts on trees and suggest new directions for improving our understanding of tree dynamics from conifer plantations to natural forests. |
| format | Journal Article |
| id | CGSpace112105 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Royal Society |
| publisherStr | Royal Society |
| record_format | dspace |
| spelling | CGSpace1121052024-11-15T08:52:05Z An architectural understanding of natural sway frequencies in trees Jackson, T. Shenkin, A. Moore, J. Bunce, A. Emmerik, T. van Kane, B. Burcham, D. James, K. Selker, J. Calders, K. Origo, N. Disney, M. Burt, A. Wilkes, P. Raumonen, P. González de Tanago Menaca, J. Lau, A. Herold, M. Goodman, R.C. Fourcaud, T. Malhi, Y. trees ecology forests wind damage biomedical engineering biochemistry bioengineering biophysics biotechnology The relationship between form and function in trees is the subject of a longstanding debate in forest ecology and provides the basis for theories concerning forest ecosystem structure and metabolism. Trees interact with the wind in a dynamic manner and exhibit natural sway frequencies and damping processes that are important in understanding wind damage. Tree-wind dynamics are related to tree architecture, but this relationship is not well understood. We present a comprehensive view of natural sway frequencies in trees by compiling a dataset of field measurement spanning conifers and broadleaves, tropical and temperate forests. The field data show that a cantilever beam approximation adequately predicts the fundamental frequency of conifers, but not that of broadleaf trees. We also use structurally detailed tree dynamics simulations to test fundamental assumptions underpinning models of natural frequencies in trees. We model the dynamic properties of greater than 1000 trees using a finite-element approach based on accurate three-dimensional model trees derived from terrestrial laser scanning data. We show that (1) residual variation, the variation not explained by the cantilever beam approximation, in fundamental frequencies of broadleaf trees is driven by their architecture; (2) slender trees behave like a simple pendulum, with a single natural frequency dominating their motion, which makes them vulnerable to wind damage and (3) the presence of leaves decreases both the fundamental frequency and the damping ratio. These findings demonstrate the value of new three-dimensional measurements for understanding wind impacts on trees and suggest new directions for improving our understanding of tree dynamics from conifer plantations to natural forests. 2019-06 2021-03-08T08:18:24Z 2021-03-08T08:18:24Z Journal Article https://hdl.handle.net/10568/112105 en Open Access Royal Society Jackson, T., Shenkin, A., Moore, J., Bunce, A., van Emmerik, T., Kane, B., Burcham, D., James, K., Selker, J., Calders, K., Origo, N., Disney, M., Burt, A., Wilkes, P., Raumonen, P., Gonzalez de Tanago Menaca, J., Lau, A., Herold, M., Goodman, R.C., Fourcaud, T., Malhi, Y. 2019. An architectural understanding of natural sway frequencies in trees. Journal of The Royal Society Interface, 16 (155): 20190116. https://doi.org/10.1098/rsif.2019.0116 |
| spellingShingle | trees ecology forests wind damage biomedical engineering biochemistry bioengineering biophysics biotechnology Jackson, T. Shenkin, A. Moore, J. Bunce, A. Emmerik, T. van Kane, B. Burcham, D. James, K. Selker, J. Calders, K. Origo, N. Disney, M. Burt, A. Wilkes, P. Raumonen, P. González de Tanago Menaca, J. Lau, A. Herold, M. Goodman, R.C. Fourcaud, T. Malhi, Y. An architectural understanding of natural sway frequencies in trees |
| title | An architectural understanding of natural sway frequencies in trees |
| title_full | An architectural understanding of natural sway frequencies in trees |
| title_fullStr | An architectural understanding of natural sway frequencies in trees |
| title_full_unstemmed | An architectural understanding of natural sway frequencies in trees |
| title_short | An architectural understanding of natural sway frequencies in trees |
| title_sort | architectural understanding of natural sway frequencies in trees |
| topic | trees ecology forests wind damage biomedical engineering biochemistry bioengineering biophysics biotechnology |
| url | https://hdl.handle.net/10568/112105 |
| work_keys_str_mv | AT jacksont anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT shenkina anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT moorej anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT buncea anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT emmeriktvan anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT kaneb anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT burchamd anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT jamesk anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT selkerj anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT caldersk anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT origon anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT disneym anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT burta anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT wilkesp anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT raumonenp anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT gonzalezdetanagomenacaj anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT laua anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT heroldm anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT goodmanrc anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT fourcaudt anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT malhiy anarchitecturalunderstandingofnaturalswayfrequenciesintrees AT jacksont architecturalunderstandingofnaturalswayfrequenciesintrees AT shenkina architecturalunderstandingofnaturalswayfrequenciesintrees AT moorej architecturalunderstandingofnaturalswayfrequenciesintrees AT buncea architecturalunderstandingofnaturalswayfrequenciesintrees AT emmeriktvan architecturalunderstandingofnaturalswayfrequenciesintrees AT kaneb architecturalunderstandingofnaturalswayfrequenciesintrees AT burchamd architecturalunderstandingofnaturalswayfrequenciesintrees AT jamesk architecturalunderstandingofnaturalswayfrequenciesintrees AT selkerj architecturalunderstandingofnaturalswayfrequenciesintrees AT caldersk architecturalunderstandingofnaturalswayfrequenciesintrees AT origon architecturalunderstandingofnaturalswayfrequenciesintrees AT disneym architecturalunderstandingofnaturalswayfrequenciesintrees AT burta architecturalunderstandingofnaturalswayfrequenciesintrees AT wilkesp architecturalunderstandingofnaturalswayfrequenciesintrees AT raumonenp architecturalunderstandingofnaturalswayfrequenciesintrees AT gonzalezdetanagomenacaj architecturalunderstandingofnaturalswayfrequenciesintrees AT laua architecturalunderstandingofnaturalswayfrequenciesintrees AT heroldm architecturalunderstandingofnaturalswayfrequenciesintrees AT goodmanrc architecturalunderstandingofnaturalswayfrequenciesintrees AT fourcaudt architecturalunderstandingofnaturalswayfrequenciesintrees AT malhiy architecturalunderstandingofnaturalswayfrequenciesintrees |