Climate-growth relationships of Daniellia oliveri (Rolfe) Hutch. & Dalziel in the Sudanian zone of Mali, West Africa
Tree rings depend on seasonal variation in radial tree growth. Where they can be identified, their interannual variation may reflect climate variability. Compared to its use in temperate and boreal regions, tree-ring analysis has been less applied in tropical Africa, with weaker seasonality. Daniell...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Trees, Forests and People |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666719322001406 |
| _version_ | 1797987378380406784 |
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| author | Kapoury Sanogo Aster Gebrekirstos Jules Bayala Meine van Noordwijk |
| author_facet | Kapoury Sanogo Aster Gebrekirstos Jules Bayala Meine van Noordwijk |
| author_sort | Kapoury Sanogo |
| collection | DOAJ |
| description | Tree rings depend on seasonal variation in radial tree growth. Where they can be identified, their interannual variation may reflect climate variability. Compared to its use in temperate and boreal regions, tree-ring analysis has been less applied in tropical Africa, with weaker seasonality. Daniellia oliveri often forms the tallest trees in agroforestry parklands of the Sudanian savanna zone of Mali but its growth response to climate (rainfall, temperature) variability has not been documented. We analyzed six stem disks of D. oliveri and used standard dendrochronological methods to process the samples. Contrary to earlier literature likely based on more humid parts of the species distribution range, D. oliveri formed distinct growth ring boundaries in our study area. The mean annual radial growth was 2.73 ± 0.56 mm. All measured tree-ring series were successfully cross-dated with a GLK (Gleichläufigkeit) value of 76.3 ± 5.6. The final tree-ring chronology covers the period 1909-2021. After removing age-related growth trends, the tree-ring width index showed a significant relationship with records of annual rainfall (r2 = 0.46, n = 100 years, p < 0.001). The relationship between wet-season (June to September) precipitation and the residual chronology was slightly higher (r2 = 0.50, n = 100 years, p < 0.001). However, no significant correlation was found for temperature. These results imply that D. oliveri can be successfully used for dendrochronological studies with relevance for the management and restoration of the ecosystems in the Sudanian zone of West Africa, where long-term rainfall records are scarce. |
| first_indexed | 2024-04-11T07:47:47Z |
| format | Article |
| id | doaj.art-ee15fa6e734c48c7b985538a326e4106 |
| institution | Directory Open Access Journal |
| issn | 2666-7193 |
| language | English |
| last_indexed | 2024-04-11T07:47:47Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Trees, Forests and People |
| spelling | doaj.art-ee15fa6e734c48c7b985538a326e41062022-12-22T04:36:15ZengElsevierTrees, Forests and People2666-71932022-12-0110100333Climate-growth relationships of Daniellia oliveri (Rolfe) Hutch. & Dalziel in the Sudanian zone of Mali, West AfricaKapoury Sanogo0Aster Gebrekirstos1Jules Bayala2Meine van Noordwijk3Institut d'Economie Rurale (IER), Centre Régional de Recherche Agronomique de Sotuba, ESPGRN BP 262, Bamako, Mali; Center for International Forestry Research and World Agroforestry (CIFOR-ICRAF), Sahel Office, BP E 5118, Bamako Mali; Corresponding author.Center for International Forestry Research and World Agroforestry (CIFOR-ICRAF), United Nations Avenue, Gigiri, Post: PO Box 30677, 00100 Nairobi, KenyaCenter for International Forestry Research and World Agroforestry (CIFOR-ICRAF), Sahel Office, Ouagadougou 06 BP 9478, Burkina FasoCenter for International Forestry Research and World Agroforestry Centre (CIFOR-ICRAF), PO Box 161, Bogor 16001, Indonesia; Plant Production Systems, Wageningen University, Wageningen, The NetherlandsTree rings depend on seasonal variation in radial tree growth. Where they can be identified, their interannual variation may reflect climate variability. Compared to its use in temperate and boreal regions, tree-ring analysis has been less applied in tropical Africa, with weaker seasonality. Daniellia oliveri often forms the tallest trees in agroforestry parklands of the Sudanian savanna zone of Mali but its growth response to climate (rainfall, temperature) variability has not been documented. We analyzed six stem disks of D. oliveri and used standard dendrochronological methods to process the samples. Contrary to earlier literature likely based on more humid parts of the species distribution range, D. oliveri formed distinct growth ring boundaries in our study area. The mean annual radial growth was 2.73 ± 0.56 mm. All measured tree-ring series were successfully cross-dated with a GLK (Gleichläufigkeit) value of 76.3 ± 5.6. The final tree-ring chronology covers the period 1909-2021. After removing age-related growth trends, the tree-ring width index showed a significant relationship with records of annual rainfall (r2 = 0.46, n = 100 years, p < 0.001). The relationship between wet-season (June to September) precipitation and the residual chronology was slightly higher (r2 = 0.50, n = 100 years, p < 0.001). However, no significant correlation was found for temperature. These results imply that D. oliveri can be successfully used for dendrochronological studies with relevance for the management and restoration of the ecosystems in the Sudanian zone of West Africa, where long-term rainfall records are scarce.http://www.sciencedirect.com/science/article/pii/S2666719322001406African dendrochronologyAnnual radial growthClimate changeParkland agroforestryRestoration |
| spellingShingle | Kapoury Sanogo Aster Gebrekirstos Jules Bayala Meine van Noordwijk Climate-growth relationships of Daniellia oliveri (Rolfe) Hutch. & Dalziel in the Sudanian zone of Mali, West Africa Trees, Forests and People African dendrochronology Annual radial growth Climate change Parkland agroforestry Restoration |
| title | Climate-growth relationships of Daniellia oliveri (Rolfe) Hutch. & Dalziel in the Sudanian zone of Mali, West Africa |
| title_full | Climate-growth relationships of Daniellia oliveri (Rolfe) Hutch. & Dalziel in the Sudanian zone of Mali, West Africa |
| title_fullStr | Climate-growth relationships of Daniellia oliveri (Rolfe) Hutch. & Dalziel in the Sudanian zone of Mali, West Africa |
| title_full_unstemmed | Climate-growth relationships of Daniellia oliveri (Rolfe) Hutch. & Dalziel in the Sudanian zone of Mali, West Africa |
| title_short | Climate-growth relationships of Daniellia oliveri (Rolfe) Hutch. & Dalziel in the Sudanian zone of Mali, West Africa |
| title_sort | climate growth relationships of daniellia oliveri rolfe hutch amp dalziel in the sudanian zone of mali west africa |
| topic | African dendrochronology Annual radial growth Climate change Parkland agroforestry Restoration |
| url | http://www.sciencedirect.com/science/article/pii/S2666719322001406 |
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