Abstract
Abstract Santa Catarina State is endowed with a flora with great wealth and diversity. The impact that introduction and cultivation of exotic ornamental plants can have on biological diversity is incalculable, and knowledge is of prime importance in measuring this value for the preservation of species and the environment. The objective of this work was to evaluate the phenology of five native species with ornamental potential in the Serra do Oratório, located in the municipality of Bom Jardim da Serra, Santa Catarina State, and to conduct phenological studies of the species Calibrachoa sellowiana (Sendtn.) Wijsman, Baccharis nummularia Heering ex Malme, Trichocline catharinensis Cabrera, Tibouchina dubia (Cham.) Cogn. and Verbena rigida Spreng. Phenological studies occurred between August 2016 and July 2017, with samples of five plants of each species. In this period the occurrence of the phases was recorded: dormancy, vegetation, flower buds or visible inflorescences, full bloom, fruiting and fruit ripening. The esthetic variables evaluated were size, color, texture, line, shape, structure and symmetry of the species. The meteorological variables related to the phenological events were temperature (ºC), precipitation (mm) and insolation (h). The species Tibouchina dubia, Verbena rigida and Calibrachoa sellowiana, even with short flowering time, are indicated for use in landscaping in the region of South Catarinense Plateau. The meteorological variables evaluated were correlated with the phenophases of the species studied.
Highlights
Phenology has recently emerged as an important focus for ecological research, mainly because of its considerable promise to address important issues in global modeling, monitoring and climate change (Schwartz, 1999)
The very steep slopes, cliffs and rocky walls of the Aparados da Serra Geral, volcanic in the highest parts, but with sandstone portions exposed in lower parts, are the eastern edge of the South-Brazilian Plateau in southern Santa Catarina (SC). and northeast of Rio Grande do Sul (RS), where the altitudes fall from 1000-1800 m at the top of Serra Geral to 100-800 m at its foot, along a narrow Northeast-Southwest (27°48’-29°21’If 49°15’-50°10’ W)
The events observed in the present study are in agreement with the results found by Barroso and Bueno (2002), where the authors state that the Baccharis nummularia species preferentially blooms from October to February
Summary
The Altomontana Forests of Southern Brazil occur at altitudes around 700 m above sea level and is widely associated with mountains of the Serra do Mar Plateau in Santa Catarina and Paraná States, as well as the Aparados da Serra Geral in Santa Catarina and Rio Grande do Sul States (Falkenberg and Voltolini, 1995). The very steep slopes, cliffs and rocky walls of the Aparados da Serra Geral, volcanic in the highest parts, but with sandstone portions exposed in lower parts, are the eastern edge of the South-Brazilian Plateau in southern Santa Catarina (SC). Recent studies have counted no less than 1,087 species of flora in the fields of southern Brazil, demonstrating their biological richness (Probio, 2003)
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