Biotic Community
Mostrando 1-12 de 57 artigos, teses e dissertações.
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1. The invasive tropical tanner grass decreases diversity of the native aquatic macrophyte community at two scales in a subtropical tidal river
ABSTRACT The tropical tanner grass, Urochloa arrecta, is one of the worst aquatic plant invaders in Brazilian freshwater ecosystems. This study aimed to compare beds of macrophytes dominated and without U. arrecta in the Guaraguaçu River, a subtropical tidal river in South Brazil, to analyze effects that this invasive grass has on the biodiversity of native
Acta Bot. Bras.. Publicado em: 2021-03
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2. Temporal distribution of fruit-feeding butterflies (Lepidoptera, Nymphalidae) in the eastern extreme of the Amazon region
RESUMO A pluviosidade é considerada um dos fatores mais determinantes na sazonalidade de insetos na região amazônica. No entanto, poucos estudos analisaram a dinâmica temporal de borboletas frugívoras na Amazônia brasileira, especialmente em sua porção oriental. Aqui, avaliamos os padrões de diversidade e a distribuição temporal de borboletas frug
Acta Amaz.. Publicado em: 25/11/2019
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3. Aquatic Oligochaete Communities in Amazonian Streams, Saracá-Taquera National Forest, Pará, Brazil
Resumo: O objetivo deste trabalho foi analisar a distribuição da comunidade de oligoquetos em relação às variáveis físico-químicas da coluna da água, variação estrutural do ambiente, e substratos predominantes em riachos amazônicos conservados na FLONA Saracá-Taquera, noroeste do Pará, Brasil. Oligochaetes são amplamente utilizados como bioind
Biota Neotrop.. Publicado em: 24/10/2019
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4. Biomass and abiotic variables change in phytotelmic environment in the tank-bromeliad Nidularium longiflorum Ule in tropical forest
Resumo Objetivo Fitotelma desempenha um papel importante no crescimento das plantas e funcionamento do ecossistema, mas este microcosmo aquático natural é pouco investigado. O objetivo do presente estudo foi avaliar as variações sazonais (estações seca e chuvosa) e espaciais (trilha florestal e córrego) do fitotelma de Nidularium longiflorum, bromél
Acta Limnol. Bras.. Publicado em: 23/09/2019
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5. Abiotic parameters and planktonic community of an earthen fish pond with continuous water flow
Resumo Objetivo O objetivo deste estudo foi investigar as condições limnológicas, fitoplâncton e zooplâncton em um viveiro fortemente afetado pelo manejo em duas estações do ano, seca e chuva. Métodos Foram analisados os parâmetros físicos e químicos da água, os macro e micronutrientes do sedimento, fitoplâncton e zooplâncton, em quatro difer
Acta Limnol. Bras.. Publicado em: 02/05/2019
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6. Disentangling plant establishment in sandy coastal systems: biotic and abiotic factors that determine Allagoptera arenaria (Arecaceae) germination
ABSTRACT Germination rate and establishment success of plants in harsh environments depend on the ability of seeds to withstand unfavorable environmental conditions and avoid predators. Brazilian coastal plains, known as restinga, are subject to environmental factors that seriously limit plant establishment and survival (e.g. salinity, desiccation, oligotrop
Acta Bot. Bras.. Publicado em: 19/10/2017
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7. Microbial interactions: ecology in a molecular perspective
ABSTRACT The microorganism-microorganism or microorganism-host interactions are the key strategy to colonize and establish in a variety of different environments. These interactions involve all ecological aspects, including physiochemical changes, metabolite exchange, metabolite conversion, signaling, chemotaxis and genetic exchange resulting in genotype sel
Braz. J. Microbiol.. Publicado em: 2016-12
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8. Variation in plant-animal interactions along an elevational gradient of moist forest in a semiarid area of Brazil
Pollination and dispersal are critical ecological processes that directly affect the reproductive success of plants and are important for understanding the structure of plant communities. We compiled data on pollination and dispersal syndromes of 406 plant species distributed among different elevations in Área de Proteção Ambiental da Serra de Baturité (
Acta Bot. Bras.. Publicado em: 2016-03
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9. Effects of spatial and environmental factors on benthic a macroinvertebrate community
Interactions between terrestrial and aquatic systems influence the structure of river habitats and, consequently, affect their benthic macroinvertebrate composition. The aim of this study was to evaluate the effects of spatial and environmental variables (local physical and chemical variables of water and regional landscape characteristics) on the benthic ma
Zoologia (Curitiba). Publicado em: 12/09/2014
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10. Mosquito community composition in dynamic landscapes from the Atlantic Forest biome (Diptera, Culicidae)
Mosquito community composition in dynamic landscapes from the Atlantic Forest biome (Diptera, Culicidae). Considering that some species of Culicidae are vectors of pathogens, both the knowledge of the diversity of the mosquito fauna and how some environment factors influence in it, are important subjects. In order to address the composition of Culicidae spec
Rev. Bras. entomol.. Publicado em: 2014-03
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11. Efeitos da arbórea introduzida Hovenia dulcis Thunb.(Rhamnaceae)sobre o componente árbóreo-arbustivo regenerante da floresta Atlântica no Sul do Brasil
Biological invasions by Hovenia dulcis Thunb., a tree from Asia, have been reported for Africa and South America. The present work aimed to evaluate the effects of the establishment of this exotic species on abundance, richness, species composition, growth, successional categories and beta diversity of natural regeneration in the Atlantic Rain Forest. Thus,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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12. Spatial variations at different observational scales and the seasonal distributions of stream macroalgae in a Brazilian subtropical region
We examined the relationships between environmental variations in lotic ecosystems with the seasonal dynamics of macroalgae communities at different spatial scales: drainage basin of two rivers (Rio das Pedras and Rio Marrecas), shading (open and shaded stream segments), mesohabitat (riffles and pools), and microhabitats. Data collections were made on a mont
Braz. J. Bot.. Publicado em: 2012