Composição Florístico-Estrutural Ao Longo De Um Gradiente De Borda Em Fragmento De Floresta Ombrófila Mista Alto-Montana Em Santa Catarina

Ferreira, Tiago de Souza; Marcon, Amanda Köche; Salami, Bruna; Chini, Carla Carolina; Mendes, Alex Ribeiro; Carvalho, A. F. de; Missio, Francieli de Fátima; Pscheidt, Francieli; Guidini, André Luiz; Dornelles, R.; Silva, Ana Carolina da; Higuchi, Pedro

doi:10.5902/1980509821097

Cited by 18 publications

(19 citation statements)

References 13 publications

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“…Moreover, the historical exploration of the area must also be taken into consideration because constant interventions in the understory, such as cattle grazing, can cause losses in total diversity of the community . The evenness value obtained (J' = 0.70) is common for upper montane araucaria forests (e.g., Higuchi et al 2013;Ferreira et al 2016;Silva et al 2017), suggesting a high uniformity of individuals distributed among the sampled species.…”

Section: Discussionmentioning

confidence: 77%

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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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Section: Discussionmentioning

confidence: 77%

“…Decreasing order of IV (alive individuals), followed by dead trees. Ferreira et al 2016;Silva et al 2017). 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).…”

Section: Discussionmentioning

confidence: 98%

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

et al. 2019

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“…Thus, the edge effect makes forest communities more susceptible to changes and may cause changes in microclimatic conditions up to hundreds of meters into the forest (Harper et al, 2005). This effect has been reproduced in different ways in vegetation, such as the change in composition and plant richness (Bernardi & Budke, 2010;Ferreira et al, 2016) and in litter production and accumulation (Portela & Santos, 2007;Santos et al, 2017;Vidal et al, 2007;Vogel et al, 2013).…”

Section: Introduction and Objectivesmentioning

confidence: 99%

Edge Effect on the Litter Production of a Semi-Deciduous Seasonal Forest Fragment

Barreto-Garcia

Oliveira

et al. 2019

Floresta Ambient.

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The edge effect makes forest communities more susceptible to changes and may cause changes in different ecosystem characteristics such as litter production. The objective of this work was to evaluate the edge effect on the contribution of litter and its temporal variation in a Semi-Deciduous Seasonal Forest fragment located in Vitória da Conquista, BA, Brazil. Four sampling ranges were delimited in the forest fragment: edge (0-10 m from the edge), transition 1 (40-50 m from the edge), transition 2 (80-90 m from the edge) and interior (400-410 m from the edge). The produced litter was collected monthly. The main litter components were leaves and branches in all sampling ranges. The contribution of the other fractions obeyed different orders at the edges (bark > reproductive structures) and interior (reproductive structures > bark). The edge effect did not influence the contribution of total litter and its temporal variation, only manifesting in the production of reproductive structures.

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“…PSCHEIDT et al, 2015;FERREIRA et al, 2016), parte significativa da paisagem natural é caracterizada pela ocorrência de um mosaico composto por florestas com araucárias e campos. Como o clima atual, predominantemente úmido, favorece o desenvolvimento das florestas, estudos indicam que os campos representam um tipo de vegetação relictual de eras glaciais pretéritas (DÜMIG et al, 2008).…”

Section: Introductionunclassified

Efeito De Borda Como Fonte Da Heterogeneidade Do Componente Arbóreo Em Uma Floresta Com Araucária No Sul Do Brasil

Pscheidt¹,

Higuchi²,

Silva³

et al. 2018

Ciênc. Florest.

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RESUMOObjetivou-se avaliar as alterações na organização de uma comunidade arbórea causadas pelo efeito de borda em um remanescente de Floresta com Araucárias no sul do Brasil. Foram instaladas cinco transeções de 100 x 20 m na área de estudo, perpendiculares às bordas florestais, subdivididas em dez parcelas. Foi definido como setor borda a distância de 0-50 m e o interior, após 50 m. Todas as árvores com circunferência na altura do peito ≥ 15,7 cm foram mensuradas, identificadas e classificadas em guildas de regeneração. Os setores foram comparados por meio do teste t, para variáveis com distribuição normal, teste de MannWhitney, para distribuições não normais, rarefação, para a riqueza, e teste de qui-quadrado aplicado a uma tabela de contingência, para verificar a distribuição dos indivíduos das diferentes guildas de regeneração. A setorização em função da borda e interior representou uma importante fonte de heterogeneidade florestal, uma vez que a parte mais marginal do fragmento caracterizou-se por apresentar um componente arbóreo de maior densidade, menor altura média e predomínio de indivíduos de espécies exigentes em luz. Do ponto de vista de conservação da biodiversidade da Floresta com Araucárias, o presente estudo sugere a necessidade da conservação de fragmentos cujo tamanho e configuração espacial permitam a existência de áreas de interior, com o propósito de contemplar a proteção de espécies não tolerantes às condições de borda. Palavras-chave: Floresta Ombrófila Mista; fragmentos florestais; Planalto Catarinense. ABSTRACTThis study aimed to evaluate changes in the organization of tree species communities due to edge effects in a forest remnant in southern Brazil. Five transects were installed in the study area, perpendicular to the forest edge, with the dimensions of 100x20 m, subdivided into ten plots. The edge sector was defined for the distance of 0-50 m and the interior for the distance of 50-100 m. All trees with circumference at breast height ≥ 15.7 were measured, identified and classified into regeneration guilds. The sectors were compared using the t test for normally distributed variables, Mann-Whitney test for non-normal distributions, rarefaction, for richness, and Chi-square test applied to a contingency table, to check the distribution of individuals of different regeneration guilds. The sectorization as a function of edge and interior represented an important source of forest heterogeneity, once the most marginal part of the fragment was characterized by a tree component of higher density, smaller average height and prevalence of individuals of light demanding

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Composição Florístico-Estrutural Ao Longo De Um Gradiente De Borda Em Fragmento De Floresta Ombrófila Mista Alto-Montana Em Santa Catarina

Cited by 18 publications

References 13 publications

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

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

Edge Effect on the Litter Production of a Semi-Deciduous Seasonal Forest Fragment

Efeito De Borda Como Fonte Da Heterogeneidade Do Componente Arbóreo Em Uma Floresta Com Araucária No Sul Do Brasil

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