Understory
Mostrando 25-36 de 114 artigos, teses e dissertações.
-
25. Diversity and aspects of the ecology of social wasps (Vespidae, Polistinae) in Central Amazonian "terra firme" forest
Diversity and aspects of the ecology of social wasps (Vespidae, Polistinae) in Central Amazonian "terra firme" forest. The knowledge of social wasp richness and biology in the Amazonian region is considered insufficient. Although the Amazonas state is the largest in the region, until now only two brief surveys were conducted there. Considering that the syste
Rev. Bras. entomol.. Publicado em: 28/11/2014
-
26. Architecture of tree species of different strata developing in environments with the same light intensity in a semideciduous forest in southern Brazil
We aimed to answer the following questions related to the architecture of individuals 0.5-3.0 m in height belonging to understory or canopy/emergent layer tree species: "Is there a difference between individuals belonging to different strata developing in environments with the same light intensity, in terms of their architecture?"; and "Given the same light
Acta Bot. Bras.. Publicado em: 2014-03
-
27. Structure of the understory community in four stretches of Araucaria forest in the state of São Paulo, Brazil
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 C
Acta Bot. Bras.. Publicado em: 2014-03
-
28. Seed rain in areas with and without bamboo dominance within an urban fragment of the Atlantic Forest
Understanding the flow of diaspores is fundamental for determining plant population dynamics in a particular habitat, and a lack of seeds is a limiting factor in forest regeneration, especially in isolated forest fragments. Bamboo dominance affects forest structure and dynamics by suppressing or delaying the recruitment of and colonization by tree species as
Acta Bot. Bras.. Publicado em: 2014-03
-
29. Do soil fertilization and forest canopy foliage affect the growth and photosynthesis of Amazonian saplings?
Most Amazonian soils are highly weathered and poor in nutrients. Therefore, photosynthesis and plant growth should positively respond to the addition of mineral nutrients. Surprisingly, no study has been carried out in situ in the central Amazon to address this issue for juvenile trees. The objective of this study was to determine how photosynthetic rates an
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-02
-
30. Ontogeny, allometry and architecture of Psychotria tenuinervis (Rubiaceae)
We evaluated the ontogeny of the understory shrub Psychotria tenuinervis Müll.Arg., considering morphological and morphometric characters. Four ontogenetic stages were identified: seedling, juvenile, immature and adult (vegetative and reproductive phases). Size measurements and allometric relationships of the stem and crown were compared between the immatur
Acta Bot. Bras.. Publicado em: 2013-12
-
31. Vertical structure of an assemblage of bats (Mammalia: Chiroptera) in a fragment of Atlantic Forest in Southern Brazil
Few studies have focused the vertical structure of bat assemblages, and how it influences community composition. The goal of this study was to analyze the vertical structure of an assemblage of bats in a forest fragment in southern Brazil. Bats were sampled using mist-nets placed at three heights (understory, below-canopy, and canopy). Forest strata were com
Zoologia (Curitiba). Publicado em: 2013-10
-
32. Phenological synchrony and seasonality of understory Rubiaceae in the Atlantic Forest, Bahia, Brazil
In tropical forests with low seasonality, climatic variables generally exert a weak influence on the phenology of species. The seasonality of phenophases in closely related taxa can be controlled by phylogenetic constraints in such environments. In this study, our aim was to describe the phenology of Rubiaceae in the understory of the Atlantic Forest in the
Acta Bot. Bras.. Publicado em: 2013-03
-
33. Avaliação de impactos imediatos da retirada de eucalipto em sub-bosque avançado, na APTA - Pólo Regional Alta Mogiana, município de Colina/SP / Evaluation of immediate impacts of the eucalyptus removal in advanced understory at APTA Regional Pole Alta Mogiana, municipality of Colina, São Paulo.
Diversos estudos realizados nas últimas duas décadas sugerem que plantios florestais comerciais têm sido apontados como catalisadores da regeneração natural em seu sub-bosque, contribuindo para a conservação da biodiversidade. Com a finalidade de obter uma visão multifacetada sobre as condições da regeneração natural efetuou-se o estudo sobre a s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/04/2012
-
34. Photosynthetic analyses of two native Atlantic Forest species in regenerative understory of eucalyptus plantation
Gas exchange, chlorophyll afluorescence, and photosynthetic pigments of Xylopia sericeaA. St.-Hil. and Siparuna guianensis Aubl. were evaluated during the rainy season and the dry season (2009-2010) in three understories with different ecological conditions (irradiance, water availability, and temperature) located in the União Biological Reserve (known as R
Braz. J. Plant Physiol.. Publicado em: 2012-06
-
35. Horse grazing systems: understory biomass and plant biodiversity of a Pinus radiata stand
Horse grazing systems may affect productivity and biodiversity of understory developed under Pinus radiata D. Don silvopastoral systems, while acting as a tool to reduce the risk of fire. This study compared continuous and rotational grazing systems effect upon biomass, fractions of stem, sprouts, leaves and woody parts of Ulex europaeus L. and alpha (Specie
Scientia Agricola. Publicado em: 2012-02
-
36. Efectos de la temperatura, el ambiente lumínico y la escarificación sobre la germinación de semillas de Bromelia serra Griseb. (Bromeliaceae)
Bromelia serra Griseb. (Bromeliaceae) is a terrestrial herb that grows in the understory of Chaco and Cerrado woodlands. In this study, the effects of temperature, light environment and scarification on seed germination were analyzed. Two temperature regimes (15/20 ºC and 20/30 ºC), three light environments (Light, Filter and Darkness; 100% light and 0.65
Rev. bras. sementes. Publicado em: 2012