Abstract
Tropical trees planting resurgent in a global warming scenario, and this activity relies on information about forest species ecology and its different functional traits. we evaluated the initial performance of Mimosa scabrella using the Generalized Linear Models (GLM) technique to fit mathematical models for collar diameter growth x height, and for crown projection area x collar diameter in a forest restoration planting. The following variables were obtained in the first four years after planting: collar diameter (mm), total height (m), crown projection area (m²) and crown volume (m³). The models fitting was performed by GLM on Gamma, Normal and Poisson distribution, identity and logarithmical join function, and they were analyzed based on Akaike and Bayesian Information Criteria, standard deviation of the estimate and determination coefficient. M. scabrella showed an excelled performance on the 48 months of age, with average increment of 200.28 mm in collar diameter, 6.88 m in total height, 2.95 m² in crown projection area and 83.41 m³ in crown volume. Its growth reduced only on periods of frost occurrence, but it restarted after these climatic events. The species growth, as well as its high survival rates and resprouting, allow its recommendation as a shady species of fast canopy fulfillment in forest restoration projects.
Highlights
Biodiversity conservation of forest ecosystems has been one of the main concerns of humanity in the last decades (Benayas et al, 2009)
Tropical trees planting has arisen in a global warming scenario (Ripple et al, 2020), and this activity relies on information about forest species ecologic suitability in their different functional traits
We assessed the initial growth of M. scabrella in the Iguazu River basin, Paraná state, Brazil, up to 4 years old in a forest restoration plantation, using Generalized Linear Models (GLM) to fit mathematical models
Summary
Biodiversity conservation of forest ecosystems has been one of the main concerns of humanity in the last decades (Benayas et al, 2009). Mimosa scabrella Benth., popularly known in Brazil as “bracatinga”, belongs to the Fabaceae family, Mimosoideae subfamily, and it is a native and endemic Brazilian species It shows broad geographic distribution, occurring especially in southern Brazil, and in parts of Minas Gerais, Rio de Janeiro and São Paulo states (Dutra & Morim, 2017). Its distribution comprises altitudes from 300 to 1,800 m (Klein, 1981; Carvalho, 1994, 2002) This species stands out by its fast growth, reaching up to 20 m in height and 40 cm in dbh (Reitz, Klein & Reis, 1978; Fabrowski et al, 2005). We assessed the initial growth of M. scabrella in the Iguazu River basin, Paraná state, Brazil, up to 4 years old in a forest restoration plantation, using Generalized Linear Models (GLM) to fit mathematical models
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