Estrutura sinusial dos componentes herbáceo e arbustivo de uma floresta costeira subtropical

Müller, Sandra Cristina; Waechter, Jorge Luiz

doi:10.1590/s0100-84042001000400005

Cited by 20 publications

(26 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For herbs, vines, subshrubs and bamboo-like plants, the coverage value replaced the relative density in the calculation of the importance values, as proposed by Müller & Waechter (2001). For each spreadsheet, the values of importance of each species were converted to percentages to allow comparisons between species and different growth forms.…”

Section: Discussionmentioning

confidence: 99%

“…For each spreadsheet, the values of importance of each species were converted to percentages to allow comparisons between species and different growth forms. The Shannon diversity index (Pielou 1969) was calculated according to Müller & Waechter (2001), considering the frequency of species, because that was the phytosociological parameter obtained for the growth forms by evaluating cover or abundance.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, there is a considerable knowledge gap between what is known of the tree layer and what is known of the understory, in terms of composition and structure, in these forests. There is evidence that the understory of the Atlantic Forest creates microclimates, as well as harboring species that are indicators of specific environments, in terms of edaphic and even geographic aspects (Laska 1997;Müller & Waechter 2001).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Structure of the understory community in four stretches of Araucaria forest in the state of São Paulo, Brazil

et al. 2014

View full text Add to dashboard Cite

We analyzed the structure of the understory community in the Atlantic Forest sensu lato, for which phytosociological descriptions of the understory are lacking. We delineated 50 plots of 10 × 20 m each at four sites within an Araucaria forest (a subtype of Atlantic Forest), located in the municipalities of Bananal, Campos do Jordão, Itaberá and Barra do Chapéu, all of which are in the state of São Paulo, Brazil. To sample the resident species of the understory, we randomly selected five 1 × 1 m subplots within each plot, resulting in a total sampling area of 250 m 2 at each site. We identified differences among the locations, mostly due to proportional differences in growth forms, in terms of species richness and the importance values within the community. Factors potentially influencing the understory structure include macroclimatic and microclimatic conditions, as well as forest fragmentation, the abundance of deciduous trees in the canopy, the surrounding vegetation and geographic location.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structure of the understory community in four stretches of Araucaria forest in the state of São Paulo, Brazil

et al. 2014

View full text Add to dashboard Cite

show abstract

“…No Brasil, o componente herbáceo é igualmente pouco conhecido. Trabalhos quantitativos foram desenvolvidos na região tropical (Meira-Neto & Martins 2003, Costa 2004) e subtropical (Citadini-Zanette 1984, Cestaro et al 1986, CitadiniZanette & Baptista 1989, Dorneles & Negrele 1999, Palma & Jarenkow 2003, Mauhs & Barbosa 2004, Kosera & Rodrigues 2005, alguns analisando o componente herbáceo juntamente com o arbustivo (Diesel 1991, Müller & Waechter 2001 e o arbóreo (Baptista & Irgang 1972). Estudos relacionando as ervas aos fatores abióticos são raros no Brasil, podendo-se citar o de Costa et al (2005) em floresta amazônica (Amazonas) e o de Meira-Neto et al (2005) na atlântica (Minas Gerais), onde segundo este autor, o tema já foi abordado em alguns estudos, porém não publicados.…”

Section: Introductionunclassified

Relações entre a estrutura da sinúsia herbácea terrícola e a cobertura do dossel em floresta estacional no Sul do Brasil

Inácio¹,

Jarenkow²

2008

Rev. bras. Bot.

View full text Add to dashboard Cite

-(Relations between the structure of terrestrial herbaceous synusiae and canopy cover in a seasonal forest in southern Brazil). The terrestrial herbaceous synusiae in tropical and subtropical forests is scarcely studied, mainly concerning its relationship to environmental factors. The aims of this study were to describe the structure of this synusiae in a seasonal forest, in "Parque Estadual do Turvo", in two different seasons and to correlate it to the degree of canopy opening, assessed by hemispherical photographs. Sampling was accomplished in 30 plots of 2 x 2 m. The survey recorded 29 herbaceous species: 13 pteridophytes and 16 magnoliophytes. Lastreopsis effusa (Sw.) Tindale and Thelypteris scabra (C. Presl) Lellinger had the highest frequency and cover. Didymochlena truncatula (Sw.) J. Sm. had high cover and Olyra humilis Nees and Pharus lappulaceus Aubl., high frequency. Mean height was 37 cm (s ± 27). Species diversity (H') and evenness indexes (J') during the summer were 2.771 (nats) and 0.823, respectively. These indexes (P = 0.509), composition and herbaceous cover (P = 0.728) were not significantly different between summer and winter. A correlation was detected between the absolute cover for each plot and the degree of canopy opening (P = 0.005). Compared to other southern Brazilian areas, the high values of diversity, richness, size and cover are consequences of the discontinuous forest canopy, which allows high light incidence on the understory. The non significant variation on the structure of the herbaceous synusiae is indicative of low degree of deciduousness of this forest.Key words -diversity, ecology of herbs, hemispherical photographs, phytosociology, understorey RESUMO -(Relações entre a estrutura da sinúsia herbácea terrícola e a cobertura do dossel em floresta estacional no Sul do Brasil). A sinúsia herbácea terrícola ainda é pouco estudada em florestas tropicais e subtropicais, principalmente no que se refere a sua relação a fatores ambientais. O objetivo deste trabalho foi descrever a estrutura desta sinúsia em floresta estacional, no Parque Estadual do Turvo em duas estações do ano e relacioná-la ao grau de abertura do dossel, medido pelo uso de fotografias hemisféricas. O levantamento de 30 unidades amostrais de 2 x 2 m resultou na amostragem de 29 espécies herbáceas, sendo 13 pteridófitas e 16 magnoliófitas. Lastreopsis effusa (Sw.) Tindale e Thelypteris scabra (C. Presl) Lellinger foram as espécies com maiores freqüências e coberturas. Didymochlena truncatula (Sw.) J. Sm. obteve elevado valor de cobertura e Olyra humilis Nees e Pharus lappulaceus Aubl. alta freqüência. A média das alturas foi de 37 cm (s ± 27). A diversidade (H') estimada no verão foi de 2,771 (nats) e a equabilidade (J') de 0,823, não diferindo significativamente do inverno (P = 0,509), assim como a composição e a cobertura herbácea não diferiram entre as duas estações (P = 0,728). Houve correlação entre a cobertura absoluta por parcela e o grau de abertura do dossel (P = 0,005). As maiores riqueza e diver...

show abstract

“…The Coastal Region possesses distinct phases of vegetational succession, featuring a mosaic of floristic communities from open grassland and wet areas to arboreal communities (Waechter 1990;Waechter & Jarenkow 1998;Müller & Waechter 2001). This mosaic is determined mainly by edaphic conditions, but also by wind action and extreme insolation (Rambo 1956).…”

Section: Introductionmentioning

confidence: 99%

Distribution patterns of ferns and lycophytes in the Coastal Region of the state of Rio Grande do Sul, Brazil

2016

View full text Add to dashboard Cite

A survey of ferns and lycophytes of the Coastal Region of the state of Rio Grande do Sul (CRRS) was performed based on fi eld work and collections of the main regional herbaria. Th e following were evaluated for each species: preferential habits (terrestrial, epiphytic or aquatic), geographic distribution patterns and habitats (forest, grassland, and wetland). Th e occurrence of a latitudinal gradient in diversity was tested over fi ve latitudinal ranges using the Sørensen Similarity Index. A total of 17 lycophyte and 206 fern species representing 28 families was found between the latitudes of 29° and 34°S. Exclusively terrestrial species were predominant (162), with the majority (113) exhibiting wide Neotropical distributions, followed by species that also occurred in the state of Paraná (44). Th e forest habitat harbored the greatest number of species (159), while grasslands had the fewest (26). Cluster analysis showed pronounced fl oristic diff erentiation among latitudinal Ranges III (31°01' to 32°S) and IV (32°01' to 31°S), with a similarity index of only 0.41. Our results demonstrate a strong north-to-south reduction in species richness in the study area, which is related to environmental conditions along the latitudinal gradient and, especially, microclimatic diff erences in the transition zone between the Atlantic Forest and Pampa biomes.

show abstract

Estrutura sinusial dos componentes herbáceo e arbustivo de uma floresta costeira subtropical

Cited by 20 publications

References 15 publications

Structure of the understory community in four stretches of Araucaria forest in the state of São Paulo, Brazil

Structure of the understory community in four stretches of Araucaria forest in the state of São Paulo, Brazil

Relações entre a estrutura da sinúsia herbácea terrícola e a cobertura do dossel em floresta estacional no Sul do Brasil

Distribution patterns of ferns and lycophytes in the Coastal Region of the state of Rio Grande do Sul, Brazil

Contact Info

Product

Resources

About