Remote phenology and leaf exchange patterns towards a sazonality gradient
Phylogenetic Patterns in Leaf Phenology of Dry Tropical Ecosystems
Can we define leaf exchange functional groups in ever wet rainforest trees? A test...
| Full text | |
| Author(s): |
de Souza, Marcelo C.
[1, 2]
;
Bueno, Paula C. P.
[3]
;
Morellato, Leonor P. C.
[4]
;
Habermann, Gustavo
[4]
Total Authors: 4
|
| Affiliation: | [1] Univ Sao Paulo, Dept Ciencias Farmaceut, Fac Ciencias Farmaceut Ribeirao Preto, BR-14040903 Ribeirao Preto, SP - Brazil
[2] Univ Estadual Paulista, Inst Biociencias, Dept Bot, Programa Posgrad Ciencias Biol Biol Vegetal, UNESP, BR-13506900 Rio Claro, SP - Brazil
[3] Univ Estadual Paulista, Inst Quim, Dept Quim Organ, UNESP, BR-14800900 Araraquara, SP - Brazil
[4] Univ Estadual Paulista, Inst Biociencias, Dept Bot, UNESP, BR-13506900 Rio Claro, SP - Brazil
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Anais da Academia Brasileira de Ciências; v. 87, n. 2, p. 813-823, JUN 2015. |
| Web of Science Citations: | 13 |
| Abstract | |
The cerrado's flora comprises aluminum-(Al) accumulating and non-accumulating plants, which coexist on acidic and Al-rich soils with low fertility. Despite their existence, the ecological importance or biological strategies of these functional groups have been little explored. We evaluated the leaf flushing patterns of both groups throughout a year; leaf concentrations of N, P, K, Ca, Mg, S, Al, total flavonoids and polyphenols; as well as the specific leaf area (SLA) on young and mature leaves within and between the groups. In Al-accumulating plants, leaf flushed throughout the year, mainly in May and September; for non-accumulating plants, leaf flushing peaked at the dry-wet seasons transition. However, these behaviors could not be associated with strategies for building up concentrations of defense compounds in leaves of any functional groups. Al-accumulating plants showed low leaf nutrient concentrations, while non-accumulating plants accumulated more macronutrients and produced leaves with high SLA since the juvenile leaf phase. This demonstrates that the increase in SLA is slower in Al-accumulating plants that are likely to achieve SLA values comparable to the rest of the plant community only in the wet season, when sunlight capture is important for the growth of new branches. (AU) | |
| FAPESP's process: | 10/07809-1 - MULTIVARIATE AND MOLECULAR APPROACHES IN THE PHENOLOGY STUDY OF FUNCTIONAL GROUPS OF BRAZILIAN SAVANNA |
| Grantee: | Marcelo Claro de Souza |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 12/13762-3 - Comparative study between the Australian and Brazilian savannas: is aluminum in the soil a survival factor for the plant species? |
| Grantee: | Marcelo Claro de Souza |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 10/51307-0 - Floristic diversity and seasonal patterns of rupestrian fields and cerrado |
| Grantee: | Leonor Patricia Cerdeira Morellato |
| Support Opportunities: | Research Grants - Research Partnership for Technological Innovation - PITE |