title: Interspecific variation in leaf pigments and nutrients of five tree species from a subtropical forest in southern Brazil.
abstract: The purpose of this study was to analyze the seasonal variation in the nutrient and pigment content of leaves from five tree species - of which three are perennial (Cupania vernalis, Matayba elaeagnoides and Nectandra lanceolata) and two are deciduous (Cedrela fissilis and Jacaranda micrantha) - in an ecotone between a Deciduous Seasonal Forest and a Mixed Ombrophilous Forest in the state of Santa Catarina, Brazil. Leaf samples were collected in the four seasons of the year to determine the content of macronutrients (N, K, P, Mg, Ca, S) and photosynthetic pigments (Chla, Chlb, Chltot, Cartot, Chla:Chlb and Cartot:Chltot). The principal component analysis showed that leaf pigments contributed to the formation of the first axis, which explains most of the data variance for all species, while leaf nutrient contribution showed strong interspecific variation. These results demonstrate that the studied species have different strategies for acquisition and use of mineral resources and acclimation to light, which are determinant for them to coexist in the forest environment.
authors.affiliation: Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul (IFRS), Rua Coronel Vicente, 281, Centro, 90030-040 Porto Alegre, RS, Brasil , Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Porto Alegre RS , Brazil.
authors.forename: Márcia
authors.initials: M
authors.lastname: Bündchen
authors.affiliation: Programa de Pós-Graduação em Ecologia e Conservação, Setor de Ciências Biológicas, Universidade Federal do Paraná, Caixa Postal 19031, 81531-990 Curitiba, PR, Brasil , Universidade Federal do Paraná, Programa de Pós-Graduação em Ecologia e Conservação, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba PR , Brazil.
authors.forename: Maria Regina T
authors.initials: MR
authors.lastname: Boeger
authors.affiliation: Departamento de Solos e Engenharia Agrícola, Setor de Ciências Agrárias, Universidade Federal do Paraná, Rua dos Funcionários, 1540, 80035-050 Juvevê, Curitiba, PR, Brasil, Universidade Federal do Paraná, Departamento de Solos e Engenharia Agrícola, Setor de Ciências Agrárias, Universidade Federal do Paraná, Curitiba PR , Brazil.
authors.forename: Carlos B
authors.initials: CB
authors.lastname: Reissmann
authors.affiliation: Universidade Estadual do Centro Oeste, PR 103, Km 157, 84500-000 Irati, PR, Brasil, Universidade Estadual do Centro-Oeste, Universidade Estadual do Centro Oeste, Irati PR , Brazil.
authors.forename: Kelly M
authors.initials: KM
authors.lastname: Geronazzo
mesh_terms: D001938:Brazil; D004602:Elements; D065928:Forests; D010788:Photosynthesis; D010860:Pigments, Biological / Q000032:analysis*; D018515:Plant Leaves / Q000737:chemistry* / Q000502:physiology; D012621:Seasons; D013045:Species Specificity; D014197:Trees / Q000737:chemistry* / Q000145:classification / Q000502:physiology
chemical_list: D004602:Elements; D010860:Pigments, Biological