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Study of ecological filters involved in the colonization of riparian forests undergoing restoration by tree species from the regional pool

Grant number: 13/26470-3
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Effective date (Start): May 01, 2014
Effective date (End): August 04, 2016
Field of knowledge:Agronomical Sciences - Forestry Resources and Forestry Engineering - Nature Conservation
Principal Investigator:Giselda Durigan
Grantee:Marcio Seiji Suganuma
Host Institution: Instituto Florestal. Secretaria de Meio Ambiente, Infraestrutura e Logística (São Paulo - Estado). São Paulo , SP, Brazil


The self-sustainability of tropical forests undergoing restoration depends, among other factors, on their colonization by species from the regional species pool, which is represented by fragments of the preexisting vegetation. Colonization is the result of dispersal of propagules combined to the establishment of seedlings, which are key processes driving the future composition of the restored ecosystems. However, recent studies have shown that not all species from the regional pool can colonize areas under restoration if they have not been planted. The proposed research aims to identify the factors that hinder or facilitate colonization, based upon the functional attributes of tree species that are related to the processes of dispersal and establishment. For this analysis we will use data from previous surveys conducted in 26 forests undergoing restoration and nine fragments of natural forests in the region of Semideciduous Atlantic Forest (SP, PR and MS ) in a radius of approximately 350 km. We will comparatively analyze the frequency of occurrence of attributes in three sets of species: 1) set of all species in the regional pool (from which we will obtain the expected frequency for each attribute if there are no filters - null hypothesis), 2) number of species able to colonize areas being restored, and 3) set of species unable to colonize the areas undergoing restoration. For those species colonizing only part of the areas being restored, we will investigate the thresholds for dispersal or establishment (e.g. distance and size of the closest seed source, seed mass and time since restoration). The study has the potential to elucidate scientific issues relevant to Restoration Ecology of tropical forests. At the same time, we hope to contribute to the improvement of restoration actions, if a functional pattern can be identified for those species that will never naturally colonize the communities being restored or for those thresholds must be surpassed and, therefore, depend on planting.

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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)
CARDOSO DE OLIVEIRA, CARLOS DELANO; CARDOSO DE OLIVEIRA, IZABELA REGINA; SUGANUMA, MARCIO SEIJI; DURIGAN, GISELDA. Overstory trees in excess: A threat to restoration success in Brazilian Atlantic forest. FOREST ECOLOGY AND MANAGEMENT, v. 449, . (13/26470-3)
SUGANUMA, MARCIO SEIJI; TOREZAN, JOSE MARCELO D.; DURIGAN, GISELDA. Environment and landscape rather than planting design are the drivers of success in long-term restoration of riparian Atlantic forest. APPLIED VEGETATION SCIENCE, v. 21, n. 1, p. 76-84, . (13/26470-3)
SUGANUMA, MARCIO S.; DURIGAN, GISELDA. Build it and they will come, but not all of them in fragmented Atlantic Forest landscapes. RESTORATION ECOLOGY, . (13/26470-3)

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