Plants Invasions
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Allelopathic suppression by Conyza canadensis depends on the interaction between latitude and the degree of the plant’s invasion
ABSTRACT Allelopathic suppression of the growth of co-occurring plant species in invaded ecosystems is an important factor in some plant invasions. This study uses leaf extracts of the invasive plant species Conyza canadensis to determine its allelopathic effects along a latitudinal gradient, and under different cover classes and degrees of invasion, on seed
Acta Bot. Bras.. Publicado em: 02/05/2017
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2. Could biological invasion by Cryptostegia madagascariensis alter the composition of the arbuscular mycorrhizal fungal community in semi-arid Brazil?
Biological invasions pose a serious threat to native semi-arid areas of Brazil, especially in areas of the state of Ceará that are typically invaded byCryptostegia madagascariensis, an exotic plant species from Madagascar. However, how this biological invasion influences the composition of the arbuscular mycorrhizal fungal (AMF) community and how this affec
Acta Bot. Bras.. Publicado em: 2016-03
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3. Espécies invasoras em sítios de restauração florestal de floresta estacional
Exotic invasive species are the second greatest cause of biodiversity loss in the world. In forest restoration, these invaders can cause serious problems, like the suppression or exclusion of plants through competition and changes in the environment. Among these species, tropical invasive grasses are responsible for heavy costs and contribute to several setb
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/02/2011
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4. InBUy database of Invasive and Alien Species (IAS) in Uruguay: a useful tool to confront this threat to biodiversity
In Uruguay, as well as in other regions of the world, IAS cause negative impacts on natural and managed ecosystems. The use of databases is a helpful tool to elaborate different strategies for prevention and control, and to develop policies and scientific analyses related to IAS. The database of IAS in Uruguay (InBUy) was developed during two time periods (2
Biota Neotropica. Publicado em: 2010-12
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5. Avaliação do efeito de borda sobre a vegetação do cerrado stricto sensu inserido em matriz de pastagem / Edge effects on plant community of cerrado sensu stricto inserted into a matrix of pasture
From the Brazilian biomes, the Cerrado has been the most widely and rapidly converted to agribusiness in recent years. The expansion of agricultural frontier over the Cerrado domain resulted in thousands of small fragments embedded in matrices of low similarity, causing a series of negative impacts on the natural ecosystem. Habitat fragmentation is considere
Publicado em: 2010
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6. Distribuição e disponibilidade de recursos florais e estratégias de forrageamento na interação entre beija-flores e Palicourea rígida (Rubiaceae)
Some pollination mechanisms represent mutualistics interactions, in which the plants offer nectar and pollen and the pollinators carry the pollen grains. The hummingbirds are the more specialized pollinators among the birds, and their high energetic cost to fly, force them to develop feeding strategies to obtain the highest energetic gains with the lowest co
Publicado em: 2009
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7. Invading potencial from Singapure almond (Terminalia catappa L.) in resting forest / Potencial invasor do chapéu-de-sol (Terminalia catappa L.) em área de restinga
Current and the next decade they will be identified in the time as group of the most excellent concerns with the ambient quality of the planet. Subjects as global heating and the eminent loss of the amount and quality of the water are argued constantly. A more specific ambient problem has worried specialists in the world all, including Brazil. One is about t
Publicado em: 2009
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8. Avaliação da reação de espécies de plantas daninhas ao nematóideMeloidogyne paranaensis
Meloidogyne paranaensis foi inicialmente detectado em lavouras de café do Brasil, e tem grande importância devido à ampla distribuição geográfica e pela severidade dos danos que causa em diferentes culturas. As plantas daninhas podem ser hospedeiras de fitonematóides, mantendo ou elevando o nível de inóculo na lavoura, o que torna importante conhece
Publicado em: 2008
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9. Independent, specialized invasions of ectomycorrhizal mutualism by two nonphotosynthetic orchids
We have investigated the mycorrhizal associations of two nonphotosynthetic orchids from distant tribes within the Orchidaceae. The two orchids were found to associate exclusively with two distinct clades of ectomycorrhizal basidiomycetous fungi over wide geographic ranges. Yet both orchids retained the internal mycorrhizal structure typical of photosynthetic
The National Academy of Sciences of the USA.
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10. Involvement of Hydrogen Peroxide and Nitric Oxide in Expression of the Ipomoelin Gene from Sweet Potato1
The IPO (ipomoelin) gene was isolated from sweet potato (Ipomoea batatas cv Tainung 57) and used as a molecular probe to investigate its regulation by hydrogen peroxide (H2O2) and nitric oxide (NO) after sweet potato was wounded. The expression of the IPO gene was stimulated by H2O2 whether or not the plant was wounded, but its expression after wounding was
American Society of Plant Biologists.