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Evaluation of the potential of native remnants as propagules sources for restoration of grassland savanas

Grant number: 14/05573-1
Support type:Scholarships in Brazil - Master
Effective date (Start): August 01, 2014
Effective date (End): January 31, 2016
Field of knowledge:Biological Sciences - Ecology - Applied Ecology
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal researcher:Giselda Durigan
Grantee:Natashi Aparecida Lima Pilon
Home Institution: Instituto de Biologia (IB). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

The cerrado grasslands have had their areas of occurrence reduced by several factors, including the conversion to agricultural production, biological invasions and even natural encroachment due to fire suppression. Actions to ensure the conservation of the diversity that has been lost should comprise ceasing land conversion, and development of management practices and restoration techniques for grassland physiognomies. The transfer of topsoil, plant material or even direct seeding have proven effective in restoring grassland vegetation in different regions of the world. The research proposed here aims to evaluate the viability of these techniques for the restoration of grassland savannas in dry and wet environments. The success of different techniques for each physiognomy, and also the resilience of natural ecosystems used as source of top soil and plant material will be evaluated. The study will be conducted in Santa Barbara Ecological Station - EEcSB by collecting material in areas where the ecosystems are intact, to restore areas where native vegetation was completely destroyed by invasion by Pinus elliottii and there is no potential for natural regeneration. Five treatments will be compared for dry grassland restoration: 1- transfer of topsoil; 2- direct seeding; 3-transfer of topsoil + direct seeding; 4-transplantation of plant material and 5- control (no intervention). Three treatments to restore wet grasslandswill be compared: 1- transplantation of plant material; 2- direct seeding; 3- control (no intervention). For each physiognomy, ten replicas per treatment will be installed in ten blocks with randomization of treatments within each block. We will also verify the resilience of the source ecosystems, by removing top soil and plant material from plots (gaps) of three different sizes (treatments) randomized inside ten blocks (ten replicates). Our expectation is that the restoration techniques can bring at least vegetation cover and part of the native flora, and that the source ecosystems are resilient to the removal of top soil and plant material, so enabling these restoration techniques for cerrado grasslands. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PILON, NATASHI A. L.; ASSIS, GEISSIANNY B.; SOUZA, FLAVIANA M.; DURIGAN, GISELDA. Native remnants can be sources of plants and topsoil to restore dry and wet cerrado grasslands. RESTORATION ECOLOGY, v. 27, n. 3, p. 569-580, MAY 2019. Web of Science Citations: 2.
ELIANE AKIKO HONDA; NATASHI APARECIDA LIMA PILON; GISELDA DURIGAN. The relationship between plant density and survival to water stress in seedlings of a legume tree. Acta Botanica Brasilica, v. 33, n. 3, p. 602-606, Set. 2019. Web of Science Citations: 0.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
. Restoration techniques for cerrado grasslands and ecological factors involved. 2016. 138 f. Master's Dissertation - Universidade Estadual de Campinas (UNICAMP). Instituto de Biologia.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.