Abundance Distributions
Mostrando 1-12 de 78 artigos, teses e dissertações.
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1. Composition and ecology of a snake assemblage in an upland forest from Central Amazonia
Abstract: Most species of Amazonian snakes have wide geographic distributions. However, local environmental factors influence the formation of assemblages in different localities. In this study, we investigated the composition of the assemblage and the effect of environmental variables on the distribution of the species inhabiting an upland forest in the Exp
An. Acad. Bras. Ciênc.. Publicado em: 18/04/2019
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2. Growth of the Anchovy Anchoa tricolor in a brazilian subtropical estuary
ABSTRACT This study aimed to describe the growth parameters of Anchoa tricolor in a subtropical estuary. From August 2010 to July 2011, 10.009 specimens of the anchovy Anchoa tricolor, mean total length 4.2 cm (±1.45), were captured in the intertidal region of the Estuarine Complex of Paranaguá (25º 15’ - 25° 35’ S and 48° 20’ - 48° 45’ W). Spe
An. Acad. Bras. Ciênc.. Publicado em: 25/06/2018
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3. The role of temporal scale in linear edge effects on a submontane Atlantic forest arboreal community
This study aims to detect the composition, abundance patterns, and successional stage distributions exhibited by arboreal species inside and at the linear edge of a submontane seasonal forest in the Chapada Diamantina (12°28'31'S, 41°23'14'W), Bahia, Brazil. The individual plants with breast height diameters ≥5 cm were sampled in 30 quadrats (10 m × 10
Acta Bot. Bras.. Publicado em: 2015-06
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4. A malacological survey in the Manso Power Plant, State of Mato Grosso, Brazil: new records of freshwater snails, including transmitters of schistosomiasis and exotic species
Introduction Schistosomiasis is a parasitic disease of public health concern in Brazil, and the construction of hydroelectric dams, in addition to increasing permanent human settlement and tourism, has created conditions suitable for the establishment of mollusks that can transmit schistosomiasis. Such areas require a number of actions to prevent the establ
Rev. Soc. Bras. Med. Trop.. Publicado em: 2014-08
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5. Ecological aspects of mosquitoes (Diptera: Culicidae) in the gallery forest of Brasilia National Park, Brazil, with an emphasis on potential vectors of yellow fever
Introduction We analyzed the vertical and monthly distributions of culicid species in the gallery forest of Brasília National Park, with an emphasis on the potential vectors of yellow fever (YF). Methods Between September 2010 and August 2011, mosquitoes were captured on the ground and in the canopy of the forest for five consecutive days per month, fro
Rev. Soc. Bras. Med. Trop.. Publicado em: 15/10/2013
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6. Modelos teóricos de distribuição de abundância das espécies para caracterização da diversidade biológica e a utilização de diferentes medidas de abundância / Theoretical models of species abundance distribution to characterize the biological diversity and the use of different measures of abundance
The species abundance distributions (SADs) are considered an informative way to describe the biological diversity revealling one of the most wellestablished patterns in ecology: the predominance of rare species in biological communities. The generality of such pattern made it relevant to the analysis of other biodiversity parameters an to induce the developm
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/08/2012
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7. 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
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8. Geoquímica orgânica aplicada à formação Irati, área de Herval, Rio Grande do Sul (RS), bacia do Paraná / Organic geochemistry applied to Irati formation, Herval area of Rio Grande do Sul, Paraná basin
The current research had the main focus on the geochemical study of a borehole in the Parana Basin at Herval city (RS), aiming to fill some gaps in the organic geochemistry of the Irati Formation. Ten chemical-stratigraphic units were defined from analytical data of Total Organic Carbon (TOC), total sulfur, insoluble residue, gamma-rays, isotopes of organic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/05/2011
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9. The effects of four types of anthropogenic disturbances on composition and abundance of terrestrial isopods (Isopoda: Oniscidea)
The Brazilian Atlantic Forest is currently reduced to about 12% of its original range. Among the components that make up its great diversity, there are species with the potential to be bioindicators, which can be very important for conservation-oriented studies. This study compares the species composition, abundance and sex ratio of terrestrial isopods in si
Zoologia (Curitiba). Publicado em: 2011-02
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10. Dung beetle communities: a neotropical-north temperate comparison
Dung beetle communities have been compared across north temperate latitudes. Tropical dung beetle communities appear to be more diverse based on studies using different methodologies. Here, we present results from a standardized sampling protocol used to compare dung beetle communities across five neotropical forests in Brazil and Ecuador and two warm, north
Neotropical Entomology. Publicado em: 2010-02
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11. Aplicação de modelos teóricos de distribuição de abundância das espécies na avaliação de efeitos de fragmentação sobre as comunidades de aves da Mata Atlântica / Use of the species abundance distributions to evaluate the effects os fragmentation on the bird communities of Atlantic Forest
As distribuições de abundância relativa das espécies tiveram um papel importante no desenvolvimento da ecologia de comunidades, revelando um dos padrões mais bem estabelecidos da ecologia, que é a alta dominância de algumas espécies nas comunidades biológicas. Este padrão provocou a criação de dezenas de modelos teóricos na tentativa de explicar
Publicado em: 2010
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12. A Teoria Neutra pode explicar a diversidade de insetos aquáticos em riachos? / Neutral Theory could explain diversity of aquatic insects in streams?
A generalidade da Teoria Neutra Unificada para Biodiversidade e Biogeografia foi avaliada através de seu suporte para a estrutura da diversidade de adultos de Odonata e das guildas de insetos predadores, fragmentadores e coletores em córregos. A avaliação da Teoria Neutra foi feita em dois níveis da hierarquia estrutural das Teorias. Uma avaliação no
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/04/2009