Invaders Species
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Gênero Cryptostegia: fitoquímica, atividades biológicas e aplicações industriais
The genus Cryptostegia comprises two species, C. madagascariensis (Bojer) and C. grandiflora (Roxb. Ex R. Br) that belong to the Apocynaceae family and are widely distributed in the tropics, as in Australia, New Zealand, India and Brazil, where they cause great socioeconomic and environmental damage, as they are invaders causing damage, mainly in the cultiva
Quím. Nova. Publicado em: 2021-06
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2. 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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3. A simple, biologically sound, and potentially useful working classification of Chagas disease vectors
Current working classifications of Chagas disease vectors rely on a loose mix-up of biological and operational matters. They are therefore confusing and ineffective. I propose a very simple classification that makes biological sense and can be operationally useful. It considers a four-level hierarchy of species (which can be native or non-native); population
Mem. Inst. Oswaldo Cruz. Publicado em: 2016-10
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4. Comunidades de hidrozoários (Cnidaria) estuarinos do sudeste e sul do Brasil / Communities of stuarine hydrozoans (Cnidaria) from south and southeast of Brazil
The majority of the hydrozoans is marine, but they are also often recorded in estuaries. This environment is considered one of the most important in number of biological invasions. The Brazilian brackish hydrozoan fauna is practically unknown, except for some scattered records. The goals of this study are (1) to survey the planktonic and benthic hydrozoans f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/11/2011
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5. 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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6. Análise citogenética de espécies de Astyanax (Characiformes) da região de transposição do rio Piumhi
The transposition of the Piumhi River caused the introduction of many aquatic species in the São Francisco basin. Species previously restricted to the Upper Paraná basin, such as Leporinus octofasciatus and Parodon nasus, are now present in the São Francisco basin. However, the morphological identification of the invaders is not always possible. This beco
Publicado em: 2009
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7. Interações entre cupins (Insecta: Isoptera) e termitófilos / Interactions between termites (Insecta: Isoptera) and termitophiles
Termites are eussocial insects that usually build their own nests. These nests are frequently invaded by other animal species - including termites - such invaders being known respectively as termitophiles or inquilines. The reasons for termites tolerance to invaders, as well as the interactions between termitophiles and their termites host, are poorly unders
Publicado em: 2008
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8. Community assembly and invasion: An experimental test of neutral versus niche processes
A species-addition experiment showed that prairie grasslands have a structured, nonneutral assembly process in which resident species inhibit, via resource consumption, the establishment and growth of species with similar resource use patterns and in which the success of invaders decreases as diversity increases. In our experiment, species in each of fou
National Academy of Sciences.
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9. The evolutionary impact of invasive species
Since the Age of Exploration began, there has been a drastic breaching of biogeographic barriers that previously had isolated the continental biotas for millions of years. We explore the nature of these recent biotic exchanges and their consequences on evolutionary processes. The direct evidence of evolutionary consequences of the biotic rearrangements
The National Academy of Sciences.
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10. Niche tradeoffs, neutrality, and community structure: A stochastic theory of resource competition, invasion, and community assembly
Stochastic niche theory resolves many of the differences between neutral theory and classical tradeoff-based niche theories of resource competition and community structure. In stochastic niche theory, invading species become established only if propagules can survive stochastic mortality while growing to maturity on the resources left unconsumed by establish
National Academy of Sciences.
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11. Invasion resistance arises in strongly interacting species-rich model competition communities.
I assemble stable multispecies Lotka-Volterra competition communities that differ in resident species number and average strength (and variance) of species interactions. These are then invaded with randomly constructed invaders drawn from the same distribution as the residents. The invasion success rate and the fate of the residents are determined as a funct
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12. Potential virulence factors of Proteus bacilli.
The object of this review is the genus Proteus, which contains bacteria considered now to belong to the opportunistic pathogens. Widely distributed in nature (in soil, water, and sewage), Proteus species play a significant ecological role. When present in the niches of higher macroorganisms, these species are able to evoke pathological events in different re