|
|
|
| Registros recuperados: 69 | |
|
|
| Tobes,Ibon; Falconí-López,Ana; Valdiviezo-Rivera,Jonathan; Provenzano-Rizzi,Francisco. |
| ABSTRACT A new species of catfish is described from the Esmeraldas River Basin, Pacific slope, northern Ecuador. Tentatively included in Microglanis, represents the second species of the genus inhabiting the Trans-Andean region. The new species is distinguished from known congeners by a unique combination of external characteristics: head and body color pattern, uniform, pale brown, yellowish or grayish, without any kind of blotches, bands or dots, only a lunate transverse band, dark or black, at caudal-fin origin; adipose-fin origin and forward without lighter or luminous areas. Compared with M. variegatus, the new species has morphometric differences, such as the distances between dorsal and pelvic fins, and between posterior nostrils. Some osteological... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diversity; Richness; Systematic; Taxonomy; Trans-Andean region. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000200211 |
| |
|
|
| Peressin,Alexandre; Casarim,Ruanny; Prado,Ivo Gavião; Cetra,Mauricio. |
| ABSTRACT Trophic structure of fish assemblages is one of the most sensitive indicators of changes in streams environments. Since it is crucial to understand the response of trophic groups to habitat alteration, our study aimed to address this research gap by assessing the influence of substrate composition, meso-habitat variability, and bank stability, on the richness, biomass, and number of individuals of carnivores, invertivores, omnivores, and herbivorous-detritivores. Using an electrofishing device, we sampled 13 Atlantic rainforest streams reaches in a degradation gradient, located in the upper Paranapanema river basin. Sample points were ranked using a physical habitat index. More pristine streams had high availability of twigs, trunks, rocks and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abundance; Environmental Assessment; Invertivores; Richness; Substrate. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000200205 |
| |
|
|
| Santos,Alexandre Clistenes de A.; Caramaschi,Érica P.. |
| The rio Santo Antônio is a perennial lowland stream in the Brazilian semi-arid region, and is the main tributary of the upper rio Paraguaçu, an important drainage of the Chapada Diamantina. The temporal variation of the fish composition and abundance in a stretch of the middle course of the river was evaluated. Sampling was carried out monthly between August 1998 and July 1999, using standardized gear and techniques. Data on water and air temperature, water transparency, maximum and mean depth, width and area of the channel, and flow were recorded on each fish sampling occasion. Univariate and multivariate statistical analyses were employed in order to detect significant temporal differences in environmental parameters and fish abundance. Temperature,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chapada Diamantina; Ichthyofauna; Richness; Seasonality. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000100014 |
| |
|
|
| CARBAYO,FERNANDO; MATARENSI JUNIOR,ODAIR; JUCÁ,MARÍLIA. |
| ABSTRACT Land planarians (Platyhelminthes) are likely important components of the soil cryptofauna, although relevant aspects of their ecology such as their density remain largely unstudied. We investigated absolute and relative densities of flatworms in three patches of secondary Brazilian Atlantic rainforest in an urban environment. Two methods of sampling were carried out, one consisting of 90 hours of active search in delimited plots covering 6,000 m² over a year, and the other consisting of leaf litter extraction from a 60 m² soil area, totaling 480-600 l leaf litter. We found 288 specimens of 16 species belonging to the genera Geobia, Geoplana, Issoca, Luteostriata, Obama, Paraba, Pasipha, Rhynchodemus, Xerapoa, and the exotic species Bipalium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Geoplaninae; Berlese funnel; Soil fauna; Cryptofauna; Richness; Manual sampling. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492016000300027 |
| |
|
|
| MEDINA,CÉSAR E.; PINO,KATERYN; PARI,ALEXANDER; LLERENA,GABRIEL; ZEBALLOS,HORACIO; LÓPEZ,EVARISTO. |
| ABSTRACT Bahuaja Sonene National Park protects the unique sample of subtropical humid savannas in Peru, which are known as “Pampas del Heath” with 6,136 hectares of area. Many endangered species and/or endemic from savannas occur there, however studies about the diversity of mammals in Pampas del Heath are limited and only three assessments there have been carried out since mid-1970s. Therefore we surveyed mammals in three habitat types of the Pampas del Heath (savanna, ecotonal area and forest) during late 2011. We used several methods of record for the different mammal groups including 1) capture techniques with mist nets, snap traps, Sherman traps, Tomahawk traps and pitfall traps, 2) and detection techniques direct by means of camera traps,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Distribution; Mammals; Pampas del Heath; Richness. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492016000200009 |
| |
|
|
| Cavarzere,Vagner; Moraes,Gabriel Parmezani; Silveira,Luís Fábio. |
| Boracéia Biological Station, near the city of Salesópolis, SP, is located in one of the most well-defined centers of endemism in eastern Brazil - the Serra do Mar Center. While the station was established only in 1954 under the auspices of the Museu de Zoologia da Universidade de São Paulo, the avifauna of this locality had already attracted the attention of ornithologists by the 1940s, when the first specimens were collected. Here we describe the ornithological history of the Boracéia Biological Station with a review of all the bird species recorded during more than 68 years, including recent transect and mist-netting records. Boracéia's records were found in museums, literature and unpublished reports that totaled 323 bird species when recent data is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Montane Atlantic forest; Transect counts; Mist-net; Richness; Ornithological collection. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492010001300001 |
| |
|
|
| Suárez,Leonardo Rodríguez; Josa,Yuli Tatiana Paladines; Samboni,Erika Judith Astudillo; Cifuentes,Karla Dayana Lopez; Bautista,Ervin Humprey Durán; Salazar,Juan Carlos Suárez. |
| Abstract: The objective of this work was to evaluate the soil macrofauna and the bioindicator taxonomic groups associated with different land uses in the Colombian Amazon. Twelve agroforestry arrangements were studied and compared with to the native forest and pasture. For each land use, six monoliths were randomly selected and divided into four layers (litter, and 0-10, 10-20, and 20-30 cm soil depths). The variables considered in the analysis of land use effects were: individuals per square meter, order richness, Shannon’s diversity index, and Pielou’s evenness index. The greatest values for soil macrofauna density and diversity occurred in the forest, in contrast with the pasture. The principal component analysis distinguished land use according to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agroforestry systems; Bioindicators; Richness; Soil macrofauna. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001201383 |
| |
|
| |
|
|
| Ribeiro,Daniele Guedes; Silvestre,Rogerio; Garcete-Barrett,Bolívar R.. |
| ABSTRACT Surveying the diversity of stinging wasps (Hymenoptera: Aculeata) provides an important information base to assist in biodiversity conservation and the management of forest reserves, as wasps depend on and maintain the population balance of several other groups of insects. In accordance, this paper presents an altitudinal survey of wasps (Hymenoptera, Aculeata, Vespidae) in Itatiaia National Park, Brazil, which is a protected area covered by Atlantic Forest in a mountainous landscape, with altitudes ranging between 540 and 2791 metres above sea level. Six altitudinal zones were sampled with entomological net, and the abundance and diversity of the species were indicated by zones. Field sampling took 288 h of discontinuous activity, which was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity hotspot; Eumeninae; Polistinae; Richness; Tropical forest. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262019000100022 |
| |
|
|
| Coelho,Marcel Serra; Almada,Emmanuel D.; Fernandes,G. Wilson; Carneiro,Marco Antonio A.; Santos,Rubens M. dos; Quintino,André V.; Sanchez-Azofeifa,Arturo. |
| Highly diverse forms of galling arthropods can be identified in much of southeastern Brazil's vegetation. Three fragments of a Seasonally Dry Tropical Forest (SDTF) located in the southern range of the Espinhaço Mountains were selected for study in the first survey of galling organisms in such tropical vegetation. Investigators found 92 distinct gall morphotypes on several organs of 51 host plant species of 19 families. Cecidomyiidae (Diptera) was the most prolific gall-inducing species, responsible for the largest proportion of galls (77%) observed. Leaves were the most frequently galled plant organ (63%), while the most common gall morphotype was of a spherical shape (30%). The two plant species, Baccharis dracunculifolia (Asteraceae) and Celtis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodviersity; Biogeography; Host plant family; Herbivory; Insect galls; Richness. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000300015 |
| |
|
|
| Soares,Stela de Almeida; Suarez,Yzel Rondon; Fernandes,Wedson Desidério; Tenório,Patrícia Mara Soares; Delabie,Jacques Hubert Charles; Antonialli-Junior,William Fernando. |
| Temporal variation in the composition of ant assemblages (Hymenoptera, Formicidae) on trees in the Pantanal floodplain, Mato Grosso do Sul, Brazil. In this paper we investigate how seasonal flooding influences the composition of assemblages of ants foraging on trees in the Pantanal of Mato Grosso do Sul. During the flood in the Pantanal, a large area is covered by floods that are the main forces that regulate the pattern of diversity in these areas. However, the effects of such natural disturbances in the ant communities are poorly known. In this sense, the objective of this study was to evaluate the effect of temporal variation in assemblages of ants foraging on trees in the Pantanal of Miranda. Samples were collected during a year in two adjacent areas,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ants; Flood and non-flood season; Insecta; Richness; Species composition. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000100013 |
| |
|
|
| Gadelha,Sian de Souza; Penteado-Dias,Angelica Maria; Silva,Alexandre de Almeida e. |
| Braconidae is a highly diversified family of Hymenoptera and usually known by their role in biological control both in agricultural and natural ecosystems. Despite of that, little is known about its diversity in the Amazon region. The present work inventoried the braconid fauna of an Open Ombrophylous Forest with Palm Trees of the Parque Natural Municipal de Porto Velho, RO. Insects were collect from June/2008 to May/2009 using six Malaise traps in different parts of the reserve. A total of 377 wasps were captured, 17 subfamilies and 56 genera identified. Braconinae, Microgastrinae, Doryctinae and Rogadinae subfamilies were very abundant, and also the genera Aleiodes, Bracon, Capitonius, Compsobracon, Heterospilus, Hymenochaonia, Opius, Pedinotus, Rogas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ichneumonoidea; Parasitoid wasps; Richness; Western Amazon. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262012000400011 |
| |
|
| |
|
|
| Viana,Blandina Felipe; Kleinert,Astrid Matos Peixoto; Neves,Edinaldo Luz das. |
| Community of Euglossini (Hymenoptera, Apidae) from the coastal sand dunes of Abaeté, Salvador, Bahia, Brazil. The Euglossini community structure was analyzed by attracting males with the scents eucalyptol, eugenol, vanillin, benzyl benzoate and methyl salicylate, and by netting bees on flowers. The samplings took place three times a month along one year from 6:00 a.m. to 6:00 p.m. The scent baits attracted 670 individuals belonging to seven species of three genus. The predominant species were Euglossa cordata (Linnaeus, 1758) (76.6%) and Eulaema nigrita Lepeletier, 1841 (21.8%). Euglossini males visited the scents along the whole year, being more abundant in May and in August. The most efficient fragrance was eucalyptol, attracting 624 individuals of five... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Community structure; Euglossini; Richness; Scent baits; Sand dunes. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262002000400008 |
| |
|
| |
|
|
| Rodrigues,Francílio da Silva; Prudente,Ana Lúcia da Costa. |
| This study records and analyzes the diversity and structure of a snake assemblage in a transition area between Cerrado and Caatinga, in the municipality of Castelo do Piauí, state of Piauí, comparing the distribution and similarity of the species composition with other open localities already studied in Brazil. We used three complementary sampling methods: time constrained search (TCS), pitfall traps with drift fences (PFT), and incidental encounters (IE). During the TCS and PFT, 912 hours/observer and 6,468 days/trap were used, respectively. We estimated 23 species of snakes for the locality, although only 19 species were recorded. Philodryas nattereri Steindachner, 1870 (n = 10), Liophis poecilogyrus (Schlegel, 1837) (n = 9), Liophis viridis Günther,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Composition; Ecotones; Richness; Similarity. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000400005 |
| |
|
|
| Argañaraz,Carina I.; Gleiser,Raquel M.. |
| ABSTRACT Urbanization has a great impact on the diversity of living organisms. Spiders, for example, have been shown to respond negatively (some orb weaving species) and positively (ground dwelling species) to urbanization. The effects of urbanization on crab spiders (Thomisidae) (sit-and-wait predators that generally ambush their prey on flowers and leaves) are not sufficiently known. This paper describes the Thomisidae community that inhabits green patches in a temperate Neotropical city, Cordoba, Argentina, and its surroundings, and ascertains whether there are differences in species richness, abundance and composition between urban and exurban sites. Samples were collected from 30 sites during the summer and spring of 2013 and 2014, using the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arachnid; Biodiversity; City; Richness; Turn-over; Urbanization. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100319 |
| |
|
|
| Santos-Pereira,Manuela; Candaten,Adriane; Milani,Douglas; Oliveira,Frederico B.; Gardelin,Joana; Rocha,Carlos F. D. da. |
| In this study we provide the first data regarding community parameters of leaf-litter anurans inhabiting a forest floor in the state of Paraná, southern Brazil, including information on community species richness, composition, specific density and biomass. Our study was conducted at Salto Morato Natural Reserve using forty plots of 4 x 4 m for each one of the four seasons (winter, spring, summer and autumn), totaling 2.560 m² of forest floor sampled. We sampled a total of 96 frogs inhabiting the forest floor, belonging to seven species: Brachycephalus hermogenesi (Giaretta & Sawaya, 1998), Ischnocnema guentheri (Steindachner, 1864), Haddadus binotatus (Spix, 1824), Leptodactylus gr. marmoratus, Physalaemus spiniger (Miranda-Ribeiro, 1926),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Rainforest; Density; Richness; Seasonality. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000600008 |
| |
|
| |
|
| |
| Registros recuperados: 69 | |
|
|
|
