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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The diversity of post-fire regeneration strategies in the cerrado ground layer

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Author(s):
Pilon, Natashi A. L. [1] ; Cava, Mario G. B. [2] ; Hoffmann, William A. [3] ; Abreu, Rodolfo C. R. [3, 4] ; Fidelis, Alessandra [5] ; Durigan, Giselda [1, 6]
Total Authors: 6
Affiliation:
[1] Univ Estadual Campinas, Inst Biol, UNICAMP, Campinas - Brazil
[2] Univ Estadual Paulista UNESP, Dept Ciencia Florestal, Botucatu, SP - Brazil
[3] North Carolina State Univ, Dept Plant & Microbial Biol, Raleigh, NC - USA
[4] Univ Fed Rural Rio de Janeiro, Dept Ciencias Ambientais, Seropedica - Brazil
[5] Univ Estadual Paulista UNESP, Inst Biociencias, Lab Vegetat Ecol, Rio Claro - Brazil
[6] Inst Florestal Assis, Floresta Estadual Assis, Lab Ecol & Hidrol Florestal, Assis - Brazil
Total Affiliations: 6
Document type: Journal article
Source: JOURNAL OF ECOLOGY; v. 109, n. 1 AUG 2020.
Web of Science Citations: 9
Abstract

Disentangling species strategies that confer resilience to natural disturbances is key to conserving and restoring savanna ecosystems. Fire is a recurrent disturbance in savannas, and savanna vegetation is highly adapted to and often dependent on fire. However, although the woody component of tropical savannas is well studied, we still do not understand how ground-layer plant communities respond to fire, limiting conservation and management actions. We investigated the effects of prescribed fire on community structure and composition, and evaluated which traits are involved in plant community regeneration after fire in the cerrado ground layer. We assessed traits related to species persistence and colonization capacity after fire, including resprouter type, underground structure, fire-induced flowering, regeneration strategy and growth form. We searched for functional groups related to response to fire, to shed light on the main strategies of post-fire recovery among species in the ground layer. Fire changed ground-layer community structure and composition in the short term, leading to greater plant species richness, population densities and increasing bare soil, compared with unburned communities. Eight months after fire, species abundance did not differ from pre-disturbance values for 86% of the species, demonstrating the resilience of this layer to fire. Only one ruderal species was disadvantaged by fire and 13% of the species benefited. Rapid recovery of soil cover by native vegetation in burned areas was driven by species with high capacity to resprout and spread vegetatively. Recovery of the savanna ground-layer community, as a whole, resulted from a combination of different species traits. We summarized these traits into five large groups, encompassing key strategies involved in ground-layer regeneration after fire. Synthesis. Fire dramatically changes the ground layer of savanna vegetation in the short term, but the system is highly resilient, quickly recovering the pre-fire state. Recovery involves different strategies, which we categorized into five functional groups of plant species:grasses,seeders,bloomers,undergroundersandresprouters. Knowledge of these diverse strategies should be used as a tool to assess conservation and restoration status of fire-resilient ecosystems in the cerrado. (AU)

FAPESP's process: 17/20897-6 - The evolution of fire-related plant traits in Cerrado ground-layer and the phylogenetic structure in burnt and non-burnt plant communities
Grantee:Natashi Aparecida Lima Pilon
Support type: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 16/17888-2 - Effects of prescribed burning and frost on plant diversity and structure in Cerrado ground layer
Grantee:Natashi Aparecida Lima Pilon
Support type: Scholarships in Brazil - Doctorate