Consulta: creatorFacets:"Callisto,Marcos"
Registros recuperados: 16
Data/hora: 05/06/2024 10:32:30

Diversidade de habitats físicos e sua relação com macroinvertebrados bentônicos em reservatórios urbanos em Minas Gerais
Provedor de dados: 76
Autores: Molozzi,Joseline; França,Juliana S.; Araujo,Thiago L. A.; Viana,Tales H.; Hughes,Robert M.; Callisto,Marcos.
Foram avaliados os efeitos da estrutura física de habitats em comunidades de macroinvertebrados bentônicos em três reservatórios: Serra Azul (SA), Vargem das Flores (FV) e Ibirité (IB). Mensurações de variáveis físicas e químicas e comunidade bentônica foram realizadas em 30 estações de amostragem em cada reservatório. Em SA, foram coletados 12 táxons com predomínio de Melanoides tuberculatus Müller, 1774 (15,2%) e Chaoboridae (63,8%). Em VF foram coletados 11 táxons sendo M. tuberculatus (34,2%) e Oligochaeta (33,6%) os dominantes. Em IB foram coletados 7 táxons com domínio de M. tuberculatus (91,2%) e Chaoboridae (6,27%). Em Serra Azul foi observada influência significativa do sub-bosque arbustivo e do ângulo de inclinação do barranco. Nos reservatórios...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fauna bentônica; Integridade de habitats; Ecossistemas semi-lênticos; Bioindicadores bentônicos.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000200006

Benthic macroinvertebrates as bioindicators of water quality in an Atlantic forest fragment
Provedor de dados: 76
Autores: Oliveira,Augusto; Callisto,Marcos.
The objective of this study was to evaluate benthic macroinvertebrate communities as bioindicators of water quality in five streams located in the "Reserva Particular do Patrimônio Natural" (RPPN) Mata Samuel de Paula and its surroundings, in the municipality of Nova Lima near the city of Belo Horizonte, Minas Gerais State, southeastern Brazil. This region has been strongly modified by human activities including mining and urbanization. Samples were collected in the field every three months between August 2004 and November 2005, totaling six samplings in the rainy and dry seasons. This assessment identified one area ecologically altered while the other sampling sites were found to be minimally disturbed systems, with well-preserved ecological conditions....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Benthic inventory; Biodiversity; Seasonal distribution; Protected areas; Functional feeding groups.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000400003

Influence of environmental variables on stream fish fauna at multiple spatial scales
Provedor de dados: 83
Autores: Junqueira,Nara Tadini; Macedo,Diego Rodrigues; Souza,Rafael Couto Rosa de; Hughes,Robert Mason; Callisto,Marcos; Pompeu,Paulo Santos.
ABSTRACT Effects of environmental variables at different spatial scales on freshwater fish assemblages are relatively unexplored in Neotropical ecosystems. However, those influences are important for developing management strategies to conserve fish diversity and water resources. We evaluated the influences of site- (in-stream) and catchment-scale (land use and cover) environmental variables on the abundance and occurrence of fish species in streams of the Upper Araguari River basin through use of variance partitioning with partial CCA. We sampled 38 1st to 3rd order stream sites in September 2009. We quantified site variables to calculate 11 physical habitat metrics and mapped catchment land use/cover. Site and catchment variables explained &gt; 50% of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Disturbed sites; Fish assemblages; Land use; Partial CCA; Physical habitat.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000300202

Size-mass relationships of Melanoides tuberculatus (Thiaridae: Gastropoda) in a eutrophic reservoir
Provedor de dados: 103
Autores: Silva,Eduardo Carvalho; Molozzi,Joseline; Callisto,Marcos.
This study evaluated the relationships of certain allometric measurements in Melanoides tuberculatus Muller, 1774, in order to develop a statistical model to estimate the biomass of this mollusc species. We measured the total length and aperture of 70 shells. These measurements were correlated with the biomass values to construct exponential and power-function models, and both models showed high coefficients of determination. The exponential model was the better biomass predictor, with a coefficient of determination over 93%. These proposed models may be an effective tool to determine the biomass of M. tuberculatus in eutrophic Brazilian reservoirs.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometry; Dry mass; Eutrophication; Molluscs.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000500004

Leaf litter as a possible food source for chironomids (Diptera) in Brazilian and Portuguese headwater streams
Provedor de dados: 104
Autores: Callisto,Marcos; Gonçalves Jr,José F.; Graça,Manuel A. S.
Our objective was to evaluate the potential use of leaf detritus by chironomid larvae. Field and laboratory experiments were performed using leaves and chironomid species collected in Portugal and Brazil. Laboratory experiments under controlled conditions were done using microbial conditioned senescent leaves of Alnus glutinosa (L.) Gaertn, Neriumoleander L., Protium heptaphilum (Aubl.) March, Protium brasiliense (Spreng) Engl., Myrcia guyanensis(Aubl.) DC and Miconia chartacea Triana. Laboratory experiments were performed using specimens collected from leaf litter in local streams. Whenever possible, after the experiments, chironomids were allowed to emerge as adults and identified. In Portugal the following taxa were identified: Micropsectra apposita...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf feeding; Shredders; Tropical and temperate experiments.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000200023

Benthic macroinvertebrate assemblages structure in two headwater streams, south-eastern Brazil
Provedor de dados: 104
Autores: Tupinambás,Taynan H.; Callisto,Marcos; Santos,Gilmar B.
From December 2003 to September 2004, benthic macroinvertebrates (BM), fishes, water and sediment were collected quarterly at six stations in two streams of the upper São Francisco River basin, south-eastern Brazil. We evaluated the ecological conditions, habitat diversity, water quality, composition and structure of BM communities, as well as the food habits of the local fish fauna. By applying a protocol for rapid characterization of ecological conditions and habitat diversity, three of the sampled localities were classified as "pristine" while the others stations were considered "altered". A well oxygenated water with near neutral pH and low electric conductivity (&lt; 0.01 mS/cm) and nutrient concentrations (&lt; 0.08 mg/l total P and &lt; 0.90 mg/l...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioindicators; Ecological conditions; Human activities; Stomach contents; Water quality.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000400005

Macroinvertebrates as tadpole food: importance and body size relationships
Provedor de dados: 104
Autores: Dutra,Silvia L.; Callisto,Marcos.
Macroinvertebrates as food were recorded for three anurans tadpoles: Hyla saxicola (Bokermann, 1964) (Hylidae), Scinax machadoi (Bokermann &amp;amp; Sazima, 1973) (Hylidae), and Bufo rubescens (Lutz, 1925) (Bufonidae). These species are commonly found in the mountain streams at Serra do Cipó National Park, Minas Gerais State, Brazil. Tadpoles were collected in pools of second-order reach in Mascates stream and third and fourth order reaches of Indaiá stream from March-October, 2003. Biometrical data were recorded before dissecting each individual and a feeding importance index was estimated. Eight taxa of chironomids and three taxa of mayfly exuviae were found in the guts, but no significantly differences were found between tadpole species (ANOVA, p &gt;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquatic food-webs; Aquatic insects; Conservation; Streams; Tadpole diet.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000400018

Does predator benefits prey? Commensalism between Corynoneura Winnertz (Diptera, Chironomidae) and Corydalus Latreille (Megaloptera, Corydalidae) in Southeastern Brazil
Provedor de dados: 104
Autores: Callisto,Marcos; Goulart,Michael D.C.; Moreno,Pablo; Martins,Rogério P.
Commensalism between Corydalus Latreille, 1802 (Megaloptera, Corydalidae) and Corynoneura Winnertz, 1846 (Diptera, Chironomidae, Orthocladiinae) larvae was recorded in Indaiá stream, at 1,380 m a.s.l. (Parque Nacional da Serra do Cipó, 19º-20ºS, 43º-44ºW) and in the headwaters of São Francisco river, at 1,300-1,700 m a.s.l. (Parque Nacional da Serra da Canastra, 20º00'-20º30'S, 46º15'-47º00'W), in Minas Gerais state, Brazil. Seventy eight Corydalus larvae (range 22-88 mm) were sampled: 61 in the Indaiá stream and 17 in other two streams. Twelve Corydalus larvae (22-79 mm) in the Indaiá stream and three out of 15 larvae in the headwaters of São Francisco river (38-50 mm) had Corynoneura, larvae and pupae on their gills (3rd to 6th) and a few larvae attached...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Headwater stream; Phoresy; Predator-prey relationship; São Francisco river.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000200032

Phoretic association between Nanocladius (Plecopteracoluthus) sp. (Chironomidae: Diptera) and Thraulodes sp. (Leptophlebiidae: Ephemeroptera)
Provedor de dados: 44
Autores: Callisto,Marcos; Goulart,Michael D. C.
Phoresy between larvae of Nanocladius (Plecopteracoluthus) sp. and nymphs of Thraulodes sp. is reported for the first time in the Neotropics.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Phoresy; Neotropics.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80592000000300024

Effects of an atypical drought on the benthic macroinvertebrate community in a tropical reservoir
Provedor de dados: 49
Autores: Anacléto,Maria José Pinheiro; Ligeiro,Raphael; Barbosa,José Etham de Lucena; Molozzi,Joseline; Callisto,Marcos.
Abstract Atypical drought events have increasingly occurred in Brazil over the last years due to global climate changes. However, their consequences on aquatic biota in reservoirs are poorly known. We tested the hypothesis that macroinvertebrate communities are negatively affected by atypical drought events, given the sensitivity of many taxa to environmental changes. We predicted that: (a) there would be changes in limnological and sediment parameters between a regular year and an atypical year, (b) abundance and richness of the genera of Chironomidae and of exotic species would be higher due to the enhanced ability of these organisms to adapt to changes in the physical environment, and (c) community structure metrics (i. richness; ii. % richness; iii....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Benthic fauna; Exotic species; Ecological integrity; Water stress; Climate changes.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000200205

Ecological assessment of a southeastern Brazil reservoir
Provedor de dados: 49
Autores: Martins,Isabela; Sanches,Barbara; Kaufmann,Philip Robert; Hughes,Robert M.; Santos,Gilmar Bastos; Molozzi,Joseline; Callisto,Marcos.
Reservoirs are artificial ecosystems with multiple functions having direct and indirect benefits to humans; however, they also cause ecological changes and influence the composition and structure of aquatic biota. Our objectives were to: (1) assess the environmental condition of Nova Ponte Reservoir, Minas Gerais state, southeastern Brazil; and (2) determine how the aquatic biota respond to disturbances. A total of 40 sites in the littoral zone of the reservoir were sampled to characterize physical and chemical habitat, land use, and benthic macroinvertebrate and fish assemblages. The predominant type of land cover near the reservoir was natural vegetation. A total of 29 fish species and 39 macroinvertebrate taxa were collected, including eight alien...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reservoirs; Water quality; Bioindicators; Physical habitat; Environmental quality.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000100103

Potential ecological distribution of alien mollusk Corbicula largillierti and its relationship with human disturbance in a semi-arid reservoir
Provedor de dados: 49
Autores: Azevêdo,Evaldo de Lira; Barbosa,José Etham de Lucena; Vidigal,Teofânia Heloisa Dutra Amorim; Marques,João Carlos; Callisto,Marcos; Molozzi,Joseline.
The introduction of exotic mollusk species has resulted in loss of biodiversity in semi-arid neotropical aquatic ecosystems. This study aims to relate the presence and density of Corbicula largillierti species to human disturbance, providing data for the conservation and management of aquatic ecosystems. Specimens were collected at Epitácio Pessoa reservoir in December 2011 and June 2012, presenting densities of 20.96 and 62.89 individuals per square meter, respectively. Anthropic disturbance metrics were calculated considering the presence, type and intensity of disturbance in littoral, riparian and flood zones. The occurrence of C. largillierti was mainly associated to the variables total phosphorus (261.05 ± 342.22 µg/L) and total nitrogen (440.79 ±...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corbiculidae; Anthropic disturbance; Environmental quality.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000100107

First record of Corbicula largillierti (Philippi 1844) in the Paraíba River Basin and potential implications from water diversion of the São Francisco River
Provedor de dados: 49
Autores: Azevêdo,Evaldo de Lira; Barbosa,José Etham de Lucena; Vidigal,Teofânia H. D. A.; Callisto,Marcos; Molozzi,Joseline.
Corbicula largillierti is a native mollusk from China. In Brazil, this species was first recorded in the Pantanal of Mato Grosso. This short communication reports the occurrence of C. largillierti for the first time in the Paraíba river basin (Brazilian semi-arid), and also considers the risk of introduction of other molluscs invaders in this basin due to the diversion of water from the São Francisco River. Densities of individuals ranged from 33 to 65 ind.m-2 (maximum values of 484 ind.m-2) in coarse sediment (gravel, 2-4 mm). The diversion of waters from the São Francisco river can lead to the introduction of new species, enhancing ecological problems in the Paraiba river basin.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Invasive species; Semi-arid; Molluscs; Corbiculidae.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000400401

Mayfly diversity in the brazilian tropical headwaters of Serra do Cipó
Provedor de dados: 52
Autores: Goulart,Michael; Callisto,Marcos.
The objectives of this study were to evaluate spatial and seasonal distribution, assemblage structure and substrate associations of mayfly nymphs in five lotic ecosystems in the headwaters of the Doce River and São Francisco River watersheds, Brazil. Samples were taken in 24 sampling stations during rainy and dry seasons in 1998. In total, 7,066 organisms were collected, belonging to 27 genera and 6 families of Ephemeroptera. The dominant taxa were Americabaetis, Paracloeodes, Leptohyphes and Hagenulus. During the rainy period, the São Francisco River watershed showed higher taxonomic richness, diversity and evenness, while in the dry period, the taxonomic richness was higher in Doce River watershed. No significant differences were found in the taxonomic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ephemeroptera; Habitat diversity; Substrate association; Conservation; River ecology.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800015

Dynamics of allochthonous organic matter in a tropical Brazilian headstream
Provedor de dados: 52
Autores: Gonçalves Júnior,José Francisco; França,Juliana Silva; Callisto,Marcos.
The species composition of the riparian vegetation and the seasonal contribution of input and storage of fine and coarse particulate organic matter were assessed in a 3rd order stretch. Fourteen tree species in the riparian zone were identified, with 3 species contributing with 68% of total litter input: Miconia chartacea Triana (43%), Miconia cyathanthera Triana (16%) and Erythroxylum pelletarianum St. Hil (9%). The allochthonous input of coarse particulate organic matter (CPOM) was composed mainly by leaves (over 50%). Species composition and the contribution of each plant species biomass for vertical, lateral and soil inputs and benthic stocks varied along the study period. The maximum values found in September, November and December coincided with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Riparian vegetation; Input; Standing stock; Cerrado; CPOM.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000700014

Water quality and diversity of yeasts from tropical lakes and rivers from the Rio Doce basin in Southeastern Brazil
Provedor de dados: 58
Autores: Medeiros,Adriana O.; Missagia,Beatriz S.; Brandão,Luciana R.; Callisto,Marcos; Barbosa,Francisco A. R.; Rosa,Carlos A.
Yeast communities were assessed in 14 rivers and four lakes from the Doce River basin in Brazil, during the rainy and dry seasons of the years 2000 and 2001. Water samples were collected at the subsurface in all sites. The following physical and chemical parameters were measured: temperature, dissolved oxygen, pH, electrical conductivity, total phosphorus, ortho-phosphate, ammonium, nitrate, nitrite and total nitrogen and the counts of faecal coliforms and heterotrophic bacteria were carried out to characterize the aquatic environmental sampled. The yeast counts were higher in aquatic environments with the highest counts of coliform and heterotrophic bacteria. These environments receive a high influx of domestic and industrial waste. A total of 317...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tropical freshwater; Yeast diversity and water quality.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400043