Leaf anatomy and chlorophyll content in Psychotria vellosiana Benth influenced by the edge and two matrices

• Autor(a) principal: Polo, Marcelo
• Data de Publicação: 2014
• Outros Autores: Melo, Nayara Cristina, Madail, Rafael Hansen, Beijo, Luiz Alberto
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista de Ciências Agrárias (Belém. Online)
• Texto Completo: https://ajaes.ufra.edu.br/index.php/ajaes/article/view/1422

  The distance effect of the edge and two matrices (pasture and sugar cane) on the microclimate and anatomical and physiological properties of Psychotria vellosiana leaves were studied in two semideciduous forest fragments in southern Minas Gerais. The plots were set at distances (0, 20, 40, 60 and 80 m) from the edge to the interior of each fragment: 0, 20 and 40 m distances were considered edge, whereas 60 and 80 m were considered interior. Microclimate data were collected in all plots and radiation data and canopy openness at 0, 40 and 80 m. Leaves were collected for analysis of their chlorophyll content and anatomical properties. No differences were found for the canopy openness and radiation between the edge and interior of the fragments. The temperature and humidity data and the soil humidity displayed no differences within or between each fragment. Only the soil temperature data differed between the fragments. The leaves displayed the same chlorophyll content for the edge and interior of the fragments and between the fragments. These results may be related to the microclimate properties found along the 80 m transect in each fragment. Some anatomical data suggested a better adaptation of P. vellosiana to the fragment surrounded by the pasture matrix. However, we require a more detailed analysis that includes nutrient information and water availability from the soil.