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Genetic, morphological and spatial characterization of two populations of Mabea fistulifera Mart. (Euphorbiaceae), in different successional stages BABT
Goulart,Maíra Figueiredo; Ribeiro,Sérvio Pontes; Lovato,Maria Bernadete.
Two populations of Mabea fistulifera (Euphorbiaceae) located at Rio Doce State Park (Minas Gerais, Brazil) in places characterized as in different successional stages, were investigated through genetic and ecological traits. Twenty randomly chosen individuals from each population had its genetic data assessed by 43 RAPD markers and were also evaluated through five morphologic traits and its spatial distribution. Both Shannon's index and AMOVA reveled that most of the genetic variation was found between individuals within populations and about 9% of variation was located between populations. Moreover, populations differed genetically, but presented similar values of genetic diversity. Morphologic data showed differences between populations. Significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mabea fistulifera; Genetic diversity; RAPD; Tree architecture; Spatial distribution; Successional gradient.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000200015
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Microscopic variability in mechanical defence and herbivory response in microphyllous leaves of tropical herb species from Serra do Cipó, Brazil Rev. Bras. Bot.
Ribeiro,Sérvio Pontes; Corrêa,Tatiana Lopez; Sousa,Hildeberto Caldas de.
Tropical high altitude grasslands present several species with both microphyllous and highly sclerophyllous leaves, and co-occur in specific soil patches, thus exposed to identical environments. In this article we describe herbivory among co-occurring microphyllous species in a tropical high altitude grassland ecosystem of Serra do Cipó, Minas Gerais state, and we tested the effect of variable anatomic traits on leaf herbivory patterns. Leaf anatomical traits were investigated for Baccharis imbricata Heering , Lavoisiera imbricata DC. and L. subulata Triana (focal species). Herbivory was measured from branches and leaves of individual plants and compared among co-occurring species within one multispecific shrub patch and among L. subulata individuals from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Fibres; Insect-plant interaction; Melastomataceae; Sclerophylly.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000200005
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Palynological evidence of vegetation change during the last 10,000 years in the mid-valley of the Rio Doce, Brazil Acta Botanica
Fonseca-Silva,Fernanda Mara; Carvalho,Marcelo de Araujo; Ribeiro,Sérvio Pontes.
ABSTRACT In order to reconstruct the vegetation history of the last 10.000 years, palynological analyses were carried out using 17 sedimentary samples of a core drilled in Parque Estadual do Rio Doce (PERD-MG). Twenty-one species of fern spores, 52 species of pollen grains and six species of fungi were identified. Phase 1 (10.375 - 9.350 cal. years BP) is characterized by a low concentration and diversity of pollen grains and is thus interpreted as a fluvial system with the presence of coarse-grained sediments. Phase 2 (9.062 - 8.195 cal. Years BP) is interpreted as a transition from a fluvial to lacustrine environment. Phase 3 (7.905 - 4.785 cal years BP) is characterized by increased trend of palynomorph concentration, highlighted by a high abundance and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Holocene; Paleovegetation; Parque Estadual do Rio Doce (PERD); Pollen analysis; South America.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100029
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