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| Conceição,Abel Augusto; Giulietti,Ana Maria; Meirelles,Sérgio Tadeu. |
| Ilhas de vegetação rodeadas de superfície rochosa foram estudadas em dois platôs do Morro do Pai Inácio (41°28'W e 12°27'S), na Chapada Diamantina. Tais platôs possuem afloramentos de quartzito-arenito entremeados por solos arenosos e ácidos, situados nas porções mais elevadas do Morro, entre 1.100 e 1.170 m acima do nível do mar, sob clima com estação seca bem definida. As ilhas foram assumidas como agrupamentos de uma ou mais espécies de plantas vasculares limitados pela superfície rochosa sem plantas vasculares em toda borda. O estudo incluiu 39 ilhas de vegetação de diferentes tamanhos em cada platô, onde predominaram ervas e arbustos de 63 espécies, sendo 22 comuns a ambos os platôs. Espécies de Liliopsida foram mais numerosas, freqüentes e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Campo rupestre; Fitossociologia; Afloramento rochoso; Inselberg; Ilha de vegetação. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062007000200008 |
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| Conceição,Abel Augusto; Funch,Ligia Silveira; Pirani,José Rubens. |
| Vegetation on rock outcrops in the "Chapada Diamantina" (soil islands) is often aggregated and surrounded by nude rock surfaces, thus creating natural units with well defined limits. The flowering and fruiting cycles of plants on 58 soil islands at altitudes between 1,100 and 1,140 meters above sea leavel were analyzed at Mãe Inácia Peak (12°27' S and 41°28' W) in the "Chapada Diamantina", Bahia, Brazil. The presence/absence of flowering and fruiting species on each soil island, and their respective cover areas were analyzed at both the population and community levels, and the phenophases of flowering and fruiting were observed during 24 successive months. The analyses of pollination and seed dispersal syndromes indicated that animals are more important in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flowering; Fruiting; Insular sandstone outcrop vegetation; Phenology; Syndromes. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000300012 |
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| Couto-Santos,Ana Paula Lima do; Conceição,Abel Augusto; Funch,Ligia Silveira. |
| This study aims to detect the composition, abundance patterns, and successional stage distributions exhibited by arboreal species inside and at the linear edge of a submontane seasonal forest in the Chapada Diamantina (12°28'31'S, 41°23'14'W), Bahia, Brazil. The individual plants with breast height diameters ≥5 cm were sampled in 30 quadrats (10 m × 10 m), 15 in the forest edge and 15 inside the forest. Species were classified according to successional category. Phytosociological and diversity indices were calculated. Shannon indices were compared using Hutcheson's t-test, and the remaining parameters were analyzed by ANOVA. Linear edges exerted a high impact on the floristic composition, diversity, and abundance of species, though little interference was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chapada Diamantina; Diversity; Forest fragmentation; Successional categories; Vegetation structure. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000200190 |
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