Inventário de Dicksonia sellowiana Hook. em Santa Catarina

Gasper, André Luís de; Sevegnani, Lúcia; Vibrans, Alexander Christian; Uhlmann, Alexandre; Lingner, Débora Vanessa; Verdi, Márcio; Dreveck, Susana; Stival-Santos, Anita; Brogni, Eduardo; Schmitt, Ronnie; Klemz, G.

doi:10.1590/s0102-33062011000400005

Cited by 23 publications

(24 citation statements)

References 25 publications

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“…Até o presente, este estudo reg istrou 79,1% das espécies citadas pela Flora do Brasil (Mantovani 2004;Gasper et al 2011). Em 8 unidades amostrais a espécie demonstrou comportamento de monodominância ocorrendo com mais de 50% de dominância.…”

Section: Resultsunclassified

Pteridófitas de Santa Catarina: um olhar sobre os dados do Inventário Florístico Florestal de Santa Catarina, Brasil

et al. 2012

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ABSTRACT(Ferns and Fern allies from Santa Catarina State: a "look at the data" from Santa Catarina Floristic Forest Inventory, Brazil). Santa Catarina is the fi rst Brazilian state to complete its Forest and Floristic Inventory, and is considered one of the states with a well-known fl ora. Th is region is covered by evergreen tropical rain forest, Araucaria forest, seasonal deciduous forest and associated ecosystems, and shows high species richness. Th is paper presents a list of ferns collected in 563 sampling units. Altogether, 324 species were recorded (300 ferns and 24 lycophytes), which belong to 29 families and 94 genera. Th e most diverse families are Polypodiaceae (49 species), Pteridaceae (42), and Dryopteridaceae (38). Asplenium and Th elypteris are the most diverse genera, with 27 species each, followed by Blechnum (15). Of importance, too, are the 75 species considered endemic to the biome. Eighteen new records for the fl ora of Santa Catarina were made. Th e distribution of species according to the vegetation type is the following: 288 species occur in evergreen tropical rainforest (of which 128 are exclusive to this vegetation type); 177 species in Araucaria forest (30 exclusively) and 57 species in seasonal deciduous forest (3 exclusively). In addition, 17 species were recorded for restinga. A collection of Asplenium lacinulatum, from an area of intense development, is fi rst record for Santa Catarina, and another of Alansmia senilis is the fi rst record for the South Region of Brazil.

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Section: Resultsunclassified

Pteridófitas de Santa Catarina: um olhar sobre os dados do Inventário Florístico Florestal de Santa Catarina, Brasil

et al. 2012

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“…Among the environmental variables, soil moisture is cited as the most important for the high density and plant coverage (Fraga et al, 2008;Blume et al, 2010;Gasper et al, 2011). Temperature is also predominant in the distribution of D. sellowiana.…”

Section: Introductionmentioning

confidence: 99%

“…Temperature is also predominant in the distribution of D. sellowiana. The altitude (above 1,000 m) and the associated temperature variation, too, influence the population directly (Gasper et al, 2011). The coldest regions are the most favorable for the development of D. sellowiana.…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution analysis of Dicksonia sellowiana Hook. in Araucaria forest fragments with different sizes

et al. 2019

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Dicksonia sellowiana Hook. (Dicksoniaceae) is target of extractive exploitation and is threatened with extinction. We analyzed the population structure, the spatial distribution pattern of D. sellowiana and its relationship with environmental parameters within three fragments of Araucaria Forest in Rio Grande do Sul, Brazil. The fragments are of different sizes, namely, large (H1LF) with 246 ha, medium (H2MF) with 57 ha and small (H3SF) with 5.2 ha. Within each site, 1 ha was delimited, divided into 100 subplots (100 m2), of which 20 were selected with a draw. In each subplot, counting of the individuals, the registration of the caudice height and the coverage of leaves (SC) (m2), measurements of photosynthetically active radiation (PAR), canopy opening degree (CO), soil moisture (SM) and litter thickness (LT). The temperature (T) was measured inside each site. A total of 792 plants were sampled, of which 551 were concentrated in H1LF, 108 in H2MF and 133 in H3SF. An average of 1320 ha-1 individuals were estimated. Of the total including the three fragments, 96.9% of the individuals are in the first class of height (up to 0.8 m), indicating a great potential of population development. The spatial distribution pattern (AI) was aggregated in the three populations and the plants presented a heterogeneous total coverage, between 4.73 m2 (H2MF) and 2,223.47 m2 (H1LF). The highest values of SC and SM were more related to the distribution of individuals in H1LF whereas the opposite was recorded in H2MF. The highest values of PAR, LT and CO correlated with the distribution of D. sellowiana in H3SF. In addition to revealing that the H1LF population is among the most dense in southern Brazil, the results demonstrated a significant structural distinction between the interior populations of the fragments, in spite of them being located near to one another and being part of the same natural field matrix.

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“…About half of all Myrceugenia species that occur in Brazil are found in araucaria forests in Santa Catarina State , reinforcing the role of these forests as a center of endemism for this genus (Landrum 1981;Murillo-A et al 2016). The tree fern D. sellowiana, like A. angustifolia, is frequently abundant in araucaria forests at high altitudes (Meyer et al 2013;Sehnem 1978) and sometimes forms monodominant communities (Gasper et al 2011). However, although D. sellowiana grows in high densities in surrounding forests, it occurs in low density in the sampled area.…”

Section: Discussionmentioning

confidence: 99%

Species diversity, community structure and ecological traits of trees in an upper montane forest, southern Brazil

et al. 2019

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Upper montane ecosystems in Brazil are little known, and their structural and functional aspects poorly understood. Our goals were to describe tree species diversity and community structure, and to characterize tree species in relation to their ecological traits, phytogeographic history and conservation status in an upper montane araucaria forest remnant. A total of 26 species belonging to 18 families were found in a 1-hectare permanent plot. The tree community mainly comprised trees with diameters of less than 20 cm and heights of between 6.5 and 9.5 m. Drimys angustifolia and Myrceugenia regnelliana had the highest importance values. Most species were shade tolerant while most individuals were pioneers. Most species and individuals presented zoophily and zoochory. Most sampled species and individuals were related to araucaria forests. Seven species are threatened to some degree while one species, Crinodendron brasiliensis, besides threatened, is also endemic to the region. The presence of endemic and endangered species demonstrates that the studied area serves important conservation purposes. Furthermore, the present study demonstrates the important role that upper montane regions have for conservation and describes the structural patterns of still poorly studied habitats, reinforcing the importance such systems have in maintaining species diversity at high elevations.

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Inventário de Dicksonia sellowiana Hook. em Santa Catarina

Cited by 23 publications

References 25 publications

Pteridófitas de Santa Catarina: um olhar sobre os dados do Inventário Florístico Florestal de Santa Catarina, Brasil

Pteridófitas de Santa Catarina: um olhar sobre os dados do Inventário Florístico Florestal de Santa Catarina, Brasil

Spatial distribution analysis of Dicksonia sellowiana Hook. in Araucaria forest fragments with different sizes

Species diversity, community structure and ecological traits of trees in an upper montane forest, southern Brazil

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