Araucaria Forest
Mostrando 13-24 de 133 artigos, teses e dissertações.
-
13. Regeneração natural em área de corte raso de Pinus taeda L.
Resumo O presente estudo teve como objetivo a análise florística da regeneração natural em área de corte raso de Pinus taeda L. aproximadamente dois anos após supressão integral de um povoamento de cerca de quinze anos. A área de estudo localiza-se na cidade de Campo Largo - PR, cuja tipologia florestal original pertence à Floresta Ombrófila Mista,
Ciênc. Florest.. Publicado em: 30/05/2019
-
14. Expansão da vegetação arbustivo-arbórea em áreas abertas alto-montanas adjacentes a fragmentos florestais, no Planalto Sul Catarinense
Resumo O objetivo deste estudo foi conhecer os padrões demográficos da regeneração natural do componente arbustivo-arbóreo e determinar se esses são influenciados pelas variáveis ambientais, em três áreas abertas em regeneração natural (diâmetro na altura do peito < 5 cm), em contato com fragmentos florestais de Floresta Ombrófila Mista Alto-Mon
Ciênc. Florest.. Publicado em: 30/05/2019
-
15. What explains the variation on the regenerative component dynamics of Araucaria Forests in southern Brazil?
ABSTRACT: The natural regeneration process is essential for forest maintenance since it is critical for establishing new tree individuals. This study aimed to improve the understanding of the regenerative component dynamics of Araucaria Forests in Southern Brazil. We investigated the effects of climate, light, tree component structure and anthropogenic distu
Sci. agric. (Piracicaba, Braz.). Publicado em: 20/05/2019
-
16. Community structure and tree diversity in a subtropical forest in southern Brazil
Resumo: Variações ambientais locais e regionais levam à composição de espécies diferentes e áreas de transições. Um exemplo é a floresta com araucária e a floresta estacional no sul do Brasil. Nossos objetivos foram (1) descrever a composição e estrutura da comunidade arbórea de uma floresta subtropical no sul do Brasil e (2) comparar as relaç
Biota Neotrop.. Publicado em: 18/03/2019
-
17. Species diversity, community structure and ecological traits of trees in an upper montane forest, southern Brazil
ABSTRACT 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 re
Acta Bot. Bras.. Publicado em: 2019-03
-
18. Brazilian Pine (Araucaria angustifolia (Bertol.) Kuntze) Ethnoecology in the Mantiqueira Atlantic Forest
ABSTRACT Araucaria angustifolia is under the domain of the Atlantic Forest, classified as Mixed Ombrophilous Forest (FOM). It is a native species critically threatened due to the intense exploration, to the point of exhaustion, of its natural reserves. This study aims to present the ethnoecological knowledge regarding this species in a community located in t
Floresta Ambient.. Publicado em: 14/02/2019
-
19. Forests of the Iguaçu National Park: Structure, Composition, and Richness
Abstract Considering the importance of the Iguaçu National Park for the conservation of the Atlantic Forest and the absence of scientific or technical studies characterizing the ecology of forest species after seven and a half decades of its existence, a phytosociological survey of the arboreal vegetation was conducted to identify the various existing spec
Floresta Ambient.. Publicado em: 13/12/2018
-
20. Abiotic effects on the cover and richness of corticolous lichens on Araucaria angustifolia trunks
ABSTRACT Lichens play a key role in natural ecosystems, as they can function as primary producers, recycle minerals and fix nitrogen. Despite their environmental importance, little is known about lichen ecology in Brazil, and especially about how abiotic factors may influence their spatial distribution. In this study, we aimed to verify how the cover and ric
Acta Bot. Bras.. Publicado em: 21/09/2018
-
21. Diameter Increment Modeling in an Araucaria Forest Fragment Using Cluster Analysis
ABSTRACT The aims of the present study were to test the hypothesis that data stratification by cluster analysis and the use of other variables, in addition to DBH, can improve the precision of the estimates in diametric increment modeling for Mixed Ombrophilous Forest species. The study was carried out in the Irati National Forest. Data from 25 permanent sa
Floresta Ambient.. Publicado em: 19/07/2018
-
22. Nectar dynamics and reproductive biology of Passiflora actinia Hook. (Passifloraceae) in Araucaria Forest
ABSTRACT Nectar production has an important role in pollinator attraction and successful fruit production in many self-incompatible angiosperm groups. The reproductive biology of Passiflora actinia was studied here and related to nectar dynamics. Passiflora actinia presented a temporal segregation of male and female functions at the beginning of anthesis. Du
Acta Bot. Bras.. Publicado em: 02/07/2018
-
23. Morphometric and molecular differences among Calvertius tuberosus (Coleoptera: Curculionidae) populations associated with Andean and coastal populations of Araucaria araucana in the La Araucanía Region, Chile
Abstract Calvertius tuberosus (Curculionidae) lives exclusively on Araucaria araucana trees (commonly known as pehuen) in southern Chile. In this study, morphometric and molecular genetic analyses of Andean and coastal populations of C. tuberosus were performed to evaluate evolutionary divergence associated with the discontinuity of the Araucaria forest betw
Rev. Bras. entomol.. Publicado em: 2018-06
-
24. Growth Dynamics of Araucaria after Management Interventions in Natural Forest
ABSTRACT The objective of this study was to evaluate the effect of selective logging on the growth dynamics of Araucaria angustifolia in a natural forest of Rio Grande do Sul state, Brazil. Treatments were based on percentage reduction of the basal area per DBH class, namely, T0 (control) = 0%; T1 (light selective logging) = reduction of 20-30%; T2 (moderate
Floresta Ambient.. Publicado em: 08/02/2018