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| Registros recuperados: 69 | |
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| Ramos,Geraldo José Peixoto; Santana,Lucineide Maria; Medina,Anderson Matos; Bicudo,Carlos Eduardo de Mattos; Branco,Luis Henrique Zanini; Moura,Carlos Wallace do Nascimento. |
| ABSTRACT Knowledge of algal and cyanobacterial diversity of phytotelmata remains poorly-known, especially for bromeliads from different vegetation formations. We investigated the microalgae communities of four species of tank bromeliads from different vegetation formations in Bahia State, Northeast Brazil, highlighting the composition, richness and diversity of taxa. Sampling of water stored in bromeliads was carried out quarterly between 2014 and 2016, and abiotic variables and morphometric attributes of bromeliads were measured. A total of 89 taxa of algae and cyanobacteria were recorded for the four bromeliad species studied. The microalgae communities of the phytotelmata varied among vegetation formations, with one tank bromeliad, Alcantarea nahoumii,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diversity; Ecology; Microalgae; Microhabitat; Phytotelm; Richness; Tank bromeliads. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000400567 |
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| Pinto,Marcelo Fett; Nabinger,Carlos; Boldrini,Ilsi Iob; Ferreira,Pedro Maria de Abreu; Setubal,Robberson Bernal; Trevisan,Rafael; Fedrigo,Jean Kássio; Carassai,Igor Justin. |
| Few studies have adequately described the floristic and structural features of natural grasslands associated with shallow basalt soils in southern Brazil. This study was carried out on natural grazing land used for livestock production in the municipality of Santana do Livramento, in the Campanha region of the state of Rio Grande do Sul, Brazil. The aim of the study was to describe the floristic and structural diversity of the area. The floristic list obtained comprises 229 plant taxa from 40 botanical families, with a predominance of the families Poaceae (62), Asteraceae (28), Fabaceae (16) and Cyperaceae (12). The estimated diversity and evenness in the community were 3.00 and 0.874, respectively. Bare soil and rock outcrops accounted for 19.3% of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diversity; Richness; Pampa biome; Forage species; Environmental gradient. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100017 |
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| Boneto, Daiane Dias; Batista-Silva, Valéria Flávia; Soares, Juliane Alessandra Cavalieri; Kashiwaqui, Elaine Antoniassi Luiz; Oliveira, Iana Aparecida Dalla Valle de. |
| This study present an inventory of the genera of Odonata-Anisoptera in lotic environments of the Iguatemi River basin, upper Paraná River, Mato Grosso do Sul State, Brazil. Samplings were performed from December 2006 to February 2009 in the Iguatemi River and eight streams of the basin. We collected 739 immature Odonata, distributed in 25 genera and three families; of which one genus represent a new record for the Mato Grosso do Sul State. Progomphus, Tramea, Elasmotemis, Macrothemis, Aphyla and Phylocycla were the most representative genera in the Iguatemi River basin. The genus accumulation curve predicts an increase of new genera for the Iguatemi River basin. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.05.00.00-9 lotic environment; Aquatic macroinvertebrate; Odonatofauna; Richness; Composition. Ecologia. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/30769 |
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| Moresco, Carina; UEM; Rodrigues, Liliana; UEM. |
| In order to analyze the structure and dynamics of the periphytic community in Iraí reservoir, an eutrophic environment, samples were taken in two seasons: summer (April) and winter (September) of 2002, in littoral areas from three regions of the reservoir (upper, intermediary and lower). Rooted aquatic vegetation were used as sampling substrates, because they were found in all sampling sites. A total of 297 species was recorded (225 in April, 73 exclusive taxa; and 224 in September, with 72 exclusive taxa). Bacillariophyceae predominated in all regions in both seasons, in species number, as well in density. There were differences in richness among zones; intermediary and lower regions were more similar, mainly in September. The periphytic algae density... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.05.00.00-9 reservoir; Periphyton; Richness; Abundance Ecologia. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/3764 |
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| Velho, Luiz Felipe Machado; Brão, Arianne Francielle Silva; Lansac-Tôha, Fernando Miranda; Buosi, Paulo Roberto Bressan; Meira, Bianca Ramos de; Cabral, Adalgisa Fernanda; Lansac-Tôha, Fábio Amodêo. |
| This study examined temporal and spatial (vertical) variations of composition, richness and abundance of the planktonic ciliates community in an urban and eutrophic lake, as well as identified the limnological factors involved in determining the patterns observed. To this end, samples of ciliates and measures of limnological variables were taken at different depths and hydrological periods. 35 ciliate species were identified, among which 14 species occurred in all periods and strata, being Prostomatida the most specious, followed by Gymnostomatida, Oligotrichida, Peritrichida, and Scuticociliatida. The patterns found for composition, abundance and species richness evidenced a vertical and temporal variation of these attributes. However, in general the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecologia - Limnologia / Ecologia de comunidades Protist; Density; Species compositio; Richness; Plankton Ecologia de Protoplâncton. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18579 |
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| LUTINSKI,JUNIR A.; LUTINSKI,CLADIS J.; GUARDA,CARIN; BUSATO,MARIA A.; GARCIA,FLÁVIO R.M.. |
| ABSTRACT Ant diversity is influenced by the structural complexity of the environment. Ants are thus an ecologically important group due to their potential to serve as indicators of environmental quality. The objective of this study was to evaluate ant diversity in areas with different land use histories and thus, within different stages of regeneration in the Permanent Preservation Area of the Foz do Chapecó Hydroelectric Plant reservoir. Ant assemblies among sample sites were compared using rarefaction analysis, and estimated richness, frequency of occurrence, and relative abundance were calculated. Associations between species and sample sites were evaluated using Principal Component Analysis (PCA). We identified 55 species in total from 24 genera,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ant fauna; Hydroelectric plant; Permanent Preservation Areas; Richness; Ants. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602719 |
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| Almeida-Gomes,Mauricio; Vrcibradic,Davor; Siqueira,Carla C.; Kiefer,Mara C.; Klaion,Thaís; Almeida-Santos,Patrícia; Nascimento,Denise; Ariani,Cristina V.; Borges-Junior,Vitor N.T.; Freitas-Filho,Ricardo F.; van Sluys,Monique; Rocha,Carlos F.D.. |
| We studied the herpetofaunal community from the Atlantic forest of Morro São João, in Rio de Janeiro State, Brazil, and present data on species composition, richness, relative abundance and densities. We combined three sampling methods: plot sampling, visual encounter surveys and pit-fall traps. We recorded sixteen species of amphibians and nine of reptiles. The estimated densities (based on results of plot sampling) were 4.5 ind/100 m2 for amphibians and 0.8 ind/100 m² for lizards, and the overall density (amphibians and lizards) was 5.3 ind/100 m². For amphibians, Eleutherodactylus and Scinax were the most speciose genera with three species each, and Eleutherodactylus binotatus was the most abundant species (mean density of 3.0 frogs/100 m²). The reptile... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herpetofauna; Atlantic rainforest; Brazil; Richness; Density. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652008000200007 |
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| Virgens,Thieres Marassati das; Rezende,Helder Ricas; Pinto,Israel Souza; Falqueto,Aloísio. |
| Abstract Mosquitoes comprehend a group with a major impact on public health, because some species transmit parasites vertebrate hosts. Comparative studies between preserved environment and disturbed areas provide important epidemiological information, due to the major knowledge on species populational dynamics and the possibility of a contact between vector species and human population. This work aims to characterize and compare the fauna of mosquitoes in the Goytacazes National Forest (GNF) and surrounding area, in the State of Espírito Santo, in Brazil. Collections occurred simultaneously in a preserved environment and in a peridomicile, from 15:00 to 18:00, between July 2008 and May 2009. In each environment, it was used a modified trap of Shannon type.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Disease Vector; Diversity; Richness; Yellow Fever. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000100204 |
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| Andrade,Maria Jaqueline Monte de; Sales,Raul Fernandes Dantas; Freire,Eliza Maria Xavier. |
| Composition, species diversity and resource usage in terms of space and time were evaluated for the lizard community of the Ecological Station of the Seridó (ESEC Seridó), Rio Grande do Norte. An observation area of 150 m × 150 m (2.25 ha) was delimited and surveyed monthly in alternate turns (morning, afternoon and night) for three consecutive days from April to October 2011, covering dry and rainy seasons. Fourteen species belonging to eight families were recorded, being Tropidurus semitaeniatus the most abundant. Seasonality influenced species richness and abundance. Regarding habitat usage, Lygodactylus klugei was the most generalist species, whilePhyllopezus periosus, P. pollicaris and T. semitaeniatus were specialists, showing affinity for rocky... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caatinga; Activity periods; Habitat use; Microhabitat use; Richness; Seasonality. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300199 |
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| Araújo,Túlio Raimundo de; Ribeiro,Ariana Cella; Doria,Carolina Rodrigues da Costa; Torrente-Vilara,Gislene. |
| Belmont Stream is the main tributary of the Madeira River in the area immediately downriver from the Santo Antonio Fall. Samplings were carried out using gill nets in the mouth of this stream between May 2005 and April 2006 and resulted in a list of 74 species. The analyses included values of composition, constancy of occurrence, species richness, abundance, Catch Per Unit of Effort and trophic structure about the ten most abundant species. Characiformes and Siluriformes were dominant order in the samples and Curimatidae (popularly known as "branquinhas") was the most abundant family, represented by Psectrogaster rutiloides (32.57% of the collected specimens), Potamorhina altamazonica (10.72%), and Potamorhina latior (7.79%). The most of species were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Richness; Dominance; CPUE; Migratory route; Amazon. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000300001 |
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| Registros recuperados: 69 | |
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