Freshwater Benthic
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Effects of the introduction of an omnivorous fish on the biodiversity and functioning of an upland Amazonian lake
RESUMO A introdução de espécies não nativas é uma ameaça aos ecossistemas de água doce. Embora a onivoria e a predação intraguilda sejam comuns nesses sistemas, os efeitos da introdução de peixes onívoros nas comunidades pelágicas e litorâneas é pouco conhecido. Nós testamos as previsões da teoria da teia trófica considerando os efeitos da
Acta Amaz.. Publicado em: 12/08/2019
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2. A predictive multimetric index based on macroinvetebrates for Atlantic Forest wadeable streams assessment
Resumo: Índices Multimétricos (MMIs) são ferramentas amplamente aplicadas ao monitoramento ecológico de ecossistemas aquáticos continentais. A maior dificuldade na utilização dos MMIs em amplas escalas espaciais consiste no aumento da variabilidade ambiental associado ao aumento da escala. A covariância entre os impactos antropogênicos e o gradiente
Biota Neotrop.. Publicado em: 16/05/2019
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3. First report of inventory and role of macroinvertebrates and fish in Cautín river (38° S, Araucania region Chile)
Resumo O rio Cautin está localizado na região de Araucania, no Chile (38°S), é caracterizado por alterações através da interferência humana devido à agricultura e as cidades da bacia circundante, a presença de salmonídeos e pelo seu regime misto, originado pela queda de neve verão e chuvas no inverno. O objetivo do presente estudo foi fazer uma r
Braz. J. Biol.. Publicado em: 02/05/2019
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4. Abbreviated larval development of Macrobrachium inpa Kensley and Walker, 1982 (Crustacea: Decapoda: Palaemonidae) from an Amazon Basin forest stream, Brazil, reared in the laboratory
Abstract This paper brings the description and illustrations of the abbreviated larval development of the Amazonian freshwater palaemonid shrimp, Macrobrachium inpa Kensley and Walker, 1982. The study was based on ovigerous females (mean total body length of 27.0 ± 1.64 mm) collected in a small forest stream in the Reserva Florestal Ducke, near Manaus, Braz
Nauplius. Publicado em: 11/08/2016
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5. The use of pelvic fins for benthic locomotion during foraging behavior in Potamotrygon motoro (Chondrichthyes: Potamotrygonidae)
Synchronized bipedal movements of the pelvic fins provide propulsion (punting) during displacement on the substrate in batoids with benthic locomotion. In skates (Rajidae) this mechanism is mainly generated by the crural cartilages. Although lacking these anatomical structures, some stingray species show modifications of their pelvic fins to aid in benthic l
Zoologia (Curitiba). Publicado em: 2015-06
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6. Variación espacio-temporal de Chironomidae (Diptera) bentónicos y derivantes en un arroyo serrano en Córdoba, Argentina
Chironomidae is one of the most abundant and diverse families in freshwater ecosystems, however its highly complex systematic has led to its scarce development in many limnological studies. The aim of this study was to analyze benthic and drifting Chironomidae assemblages in a mountain stream of central Argentina assessing abundance, diversity and taxa compo
Iheringia, Sér. Zool.. Publicado em: 2015-03
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7. A new species of freshwater amphipod (Dogielinotidae, Hyalella) from Southeastern Brazil
To the present 57 species of Hyalella were described for Americas, 15 of them found in Brazil, which is among the most diverse countries for this genus. This work aims to describe a new Hyalella species with benthic habits which is found in a water source on Southeastern Brazil. It is mainly characterized by a wide truncated process formed near the dactylus
Nauplius. Publicado em: 2013-06
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8. The spatial distribution of the subtidal benthic macrofauna and its relationship with environmental factors using geostatistical tools: a case study in Trapandé Bay, southern Brazil
Modeling the distribution patterns of the estuarine macrobenthic community has revealed itself as a difficult task due to spatio-temporal heterogeneity. This study uses ordinary kriging and Poisson modeling to generate distribution maps of the subtidal benthic macrofauna in the Trapandé Bay (southeastern Brazil). Samples were taken in duplicate from 36 loca
Zoologia (Curitiba). Publicado em: 2013-02
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9. Ontogenesis and functional morphology of the digestive system of the freshwater prawn, Macrobrachium amazonicum (Decapoda: Palaemonidae)
The appropriate feeding regime for larvae and post-larvae of crustacean decapods is essential for successful larval culture. Reports on the development and morphology of the mouthparts and foregut of these crustaceans have aided in the selection of appropriate larval foodstuffs and consequently increased larval survival and growth rate during development. In
Zoologia (Curitiba). Publicado em: 2011-06
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10. Análise da interação entre substâncias húmicas e xenobióticos através de estudos ecotoxicológicos: propostas para a geração de tecnologias de detoxificação aquática / Study of humic substances and xenobiotics interaction using ecotoxicological studies: aquatic detoxification technologies purposes
This study focuses the interaction of humic substances and xenonbiotics, throw ecotixicological studies. The main point was quantify and qualify the ecotoxicological responses of several throphic levels of freshwater (algae, zooplankton, fishes and benthic organisms) and soil organisms (higth plants, insects and annelids) analyzing the direct and indirect ef
Publicado em: 2008
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11. Life cicle aspects of endemic benthic species and its aplication on the sediment quality assesments of natural lakes and reservoirs / Aspectos do ciclo de vida de espécies bentônicas nativas e sua utilização na avaliação da qualidade de sedimentos de lagos naturais e reservatórios
The ecological studies, with views for the conservation of the environment, have been intensified from middles of the century XX. Due to the integration with several other sciences during the process of ecological knowledge formation, those studies have become essential to the development of technologies and appropriate politics for the administration of the
Publicado em: 2007
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12. Effects of taxonomic resolution of benthic invertebrates in the assessment of lotic ecosystem s quality / Efeitos da resolução taxonômica de invertebrados bentônicos no diagnóstico da qualidade de ecossistemas lóticos
Nas últimas décadas, tem-se observado uma expressiva queda da qualidade ambiental e perda de biodiversidade nos ecossistemas aquáticos em função de múltiplos impactos advindos de atividades antrópicas. Dessa forma, considerando-se que a estrutura das comunidades pode ser alterada por tais perturbações, diversos métodos têm sido propostos para aval
Publicado em: 2007