Diversity And The Tropical Ecosystem
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. WATER AND LIGHT STRESSES DRIVE ACCLIMATION DURING THE ESTABLISHMENT OF A TIMBER TREE UNDER DIFFERENT INTENSITIES OF RAINFOREST CANOPY COVERAGE
ABSTRACT The loss of structure, diversity and functions in the rainforests makes it necessary to develop active strategies to restore their economic and ecological values. Planting selected species can help to catalyze ecosystem restoration. The capacity of the plants to survive and grow in the rainforests, where the canopy coverage changes stochastically, i
CERNE. Publicado em: 20/05/2019
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2. Fungal endophyte diversity in the leaves of the medicinal plant Myracrodruon urundeuva in a Brazilian dry tropical forest and their capacity to produce L-asparaginase
ABSTRACT We studied the fungal endophyte community of the leaves of Myracrodruon urundeuva in Brazil along with their potential to produce L-asparaginase. In total, 187 endophytes were isolated. The colonization rate of leaf fragments from caatinga (10.41 %) was lower than those from brejo de altitude (39.58 %). Sequences of ITS rDNA from all endophytes reve
Acta Bot. Bras.. Publicado em: 21/09/2018
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3. Forecasting the impact of an invasive macrophyte species in the littoral zone through aquatic insect species composition
ABSTRACT Invasive macrophytes threaten freshwater ecosystem biodiversity. We analyzed the impact of the invasive white ginger lily (Hedychium coronarium J. König, Zingiberaceae) on aquatic insect assemblages living in the littoral zone of a tropical reservoir. We took aquatic insect samples in the littoral zone on four main vegetal profile banks: white ging
Iheringia, Sér. Zool.. Publicado em: 27/11/2017
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4. Soil Macrofauna as a Soil Quality Indicator in Native and replanted Araucaria angustifolia Forests
ABSTRACT Studies on soil quality in Araucaria forests contribute to understanding changes in this ecosystem and serve as a tool in conserving its biodiversity. The aim of this study was to evaluate the potential of soil macrofauna in discriminating native and replanted Araucaria forests for selection of soil quality indicators. Native (NF) and replanted (RF)
Rev. Bras. Ciênc. Solo. Publicado em: 09/11/2017
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5. Morphological Diversity of Coleoptera (Arthropoda: Insecta) in Agriculture and Forest Systems
ABSTRACT Coleopterans (Coleoptera) are major ecosystem service providers. However ecomorphological features that are comparable in a wide range of invertebrates within this group and in various environments must be found, to be able to study regions with different species, contributing to overcome difficulties of the taxonomic approach and understand the fun
Rev. Bras. Ciênc. Solo. Publicado em: 09/11/2017
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6. Biodiversity of Coreoidea and Pentatomidae (Heteroptera) from Atlantic forest protected areas. Insights into their conservation.
ABSTRACT Although the majority of threatened species are likely to be tropical insects, knowledge of the diversity, ecological role and impact of insect biodiversity loss on ecosystem processes is very limited. Specimens belonging to four families of Heteroptera: Pentatomidae, Coreidae, Alydidae and Rhopalidae, were collected from a protected area in the Par
An. Acad. Bras. Ciênc.. Publicado em: 24/07/2017
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7. Edge effect on vascular epiphytic composition in a fragment of Atlantic Forest in northeastern Brazil
Epiphytes are common in the canopy of temperate and tropical forests, where they substantially contribute to species diversity and to key ecosystem processes. However, little is known about the effects caused by deforestation on this group of species, especially in northeastern Brazil, an area experiencing intense anthropogenic pressure. This study aimed to
Acta Bot. Bras.. Publicado em: 2015-06
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8. Characterization of diesel degrading bacterial species from contaminated tropical ecosystem
The bacterial diversity in a diesel contaminated tropical soil was investigated using diesel oxidation in gradient cultures dynamics (pH and OD) of the pure cultures. The diesel dependent growths of these isolates were assessed for 15 days by monitoring the gradient fluxes in the pH and Optical density OD of the media. Results showed an increase in OD as wel
Braz. arch. biol. technol.. Publicado em: 2014-10
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9. Ant species (Hymenoptera, Formicidae) from the seasonally dry tropical forest of northeastern Brazil: a compilation from field surveys in Bahia and literature records
Ant species (Hymenoptera, Formicidae) from the seasonally dry tropical forest of northeastern Brazil: a compilation from field surveys in Bahia and literature records. The Caatingas occur predominantly in northeastern Brazil and comparatively it is the biome that received less attention than any other ecosystem in Brazil, representing the region where invert
Rev. Bras. entomol.. Publicado em: 28/05/2013
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10. Decapod crustaceans from a marine tropical mangrove ecosystem on the Southern Western Atlantic, Brazil
The purpose of the present study was to investigate the biodiversity, relative abundance and frequency of decapod crustaceans in the marine mangrove ecosystem at Gaibu Beach, Pernambuco State, Brazil. A total of eight samples were taken: four in the rainy season (August 2010) and four in the dry season (February 2011), during spring low tides and according t
Nauplius. Publicado em: 2012-12
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11. Partição da diversidade de formigas em uma paisagem fragmentada / Ant diversity partitioning in a fragmented landscape
Forest fragmentation events have been characterized as one of the main threats to biodiversity in modern times, and are the primary cause of species loss in tropical forests. Ants are organisms that present many suitable traits to be used in ecological studies, therefore they are frequently used in fragmentation surveys. However only epigaeic microhabitat ha
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/07/2010
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12. Fungos micorrízicos arbusculares em ecossistema de Mata Seca no norte de Minas Gerais. 2010. / Arbuscular mycorrhizal fungi in Dry Forets ecosystems in north of Minas Gerais. 2010. 68 p. Dissertation (MSc in Plant Biotechnology and Applied). Institute of Biology, Federal Rural University of Rio de Janeiro, Seropédica, RJ. 2010.
This study was conducted in State Park Dry forest in the city of Manga in the North of Minas Gerais, Brazil and aimed to evaluate the occurrence and diversity of arbuscular mycorrhizal fungi (AMF) and the protein related to soil glomalin and biomass of external mycelium in Dry Forest ecosystems in the North of Minas Gerais. To collect the soil samples in eac
Publicado em: 2010