Detritus
Mostrando 1-12 de 66 artigos, teses e dissertações.
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1. Distribution and habitat preference of Ephemeroptera and Trichoptera in subtropical mountain streams: implications for monitoring and conservation
Abstract: The assessment of biotic-habitat relationships provides key information to predict biotic responses to perturbations and important tools for river management and monitoring. This study aimed to assess the spatial distribution of Ephemeroptera and Trichoptera in mountain streams of central Argentina. We evaluated the effect of seasonality and identi
An. Acad. Bras. Ciênc.. Publicado em: 14/10/2019
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2. Effects of deforestation on headwater stream fish assemblages in the Upper Xingu River Basin, Southeastern Amazonia
RESUMO A expansão da fronteira agrícola amazônica representa a mais ampla mudança na cobertura e uso da terra no mundo contemporâneo, e ameaça a integridade de ecossistemas de riachos que abrigam a maior diversidade de peixes de água doce do planeta. Nosso objetivo foi testar as hipóteses de que o desmatamento afeta a abundância, a riqueza e a estru
Neotrop. ichthyol.. Publicado em: 31/01/2019
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3. Shredders prefer soft and fungal-conditioned leaves, regardless of their initial chemical traits
RESUMO Nós investigamos em experimento de campo e de laboratório os efeitos das características foliares e condicionamento microbiano de duas espécies de árvores na abundância, biomassa e preferência alimentar de um fragmentador típico. No experimento de campo, comparamos a associação do Phylloicus (Calamoceratidae, Trichoptera) entre duas espécie
Iheringia, Sér. Zool.. Publicado em: 14/01/2019
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4. Use of food resources and resource partitioning among five syntopic species of Hypostomus (Teleostei: Loricariidae) in an Atlantic Forest river in southern Brazil
ABSTRACT We analyzed the diet and resource partitioning among five syntopic species of Hypostomus Lacépède, 1803 in the Corumbataí River in southeastern Brazil. The gut contents of 352 individuals were assessed and 21 food items were identified and quantified under an optical microscope. The food items found in the gut contents indicate that these suckerm
Zoologia (Curitiba). Publicado em: 15/12/2016
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5. Entrada de detritus foliares e condutividade elétrica afetam a densidade de Phylloicus sp. (Trichoptera: Calamoceratidae) em um riacho de cabeceira no Cerrado
Resumo: Objetivo Invertebrados fragmentadores são geralmente escassos em riachos tropicais, com evidências consideráveis sugerindo que a disponibilidade de recursos alimentares possa determinar esse padrão em riachos de cabeceira. O objetivo desse estudo foi avaliar os efeitos de variações na disponibilidade de recursos alimentares durante um ano na d
Acta Limnol. Bras.. Publicado em: 15/09/2016
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6. Decomposition Dynamics of Typha angustifolia under Aerobic Conditions
The study of the Typha species has gained attention in tropical areas due to their rapid growth, nutrient release, and contribution to detritus in lakes. Analysis of the degradation of Typha angustifolia has shown that the first stage of decomposition is marked primarily by the release of soluble compounds, indicating that microorganisms have a minor influen
J. Braz. Chem. Soc.. Publicado em: 2016-09
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7. Cellulase activity and dissolved organic carbon release from lignocellulose macrophyte-derived in four trophic conditions
Abstract Considering the importance of lignocellulose macrophyte-derived for the energy flux in aquatic ecosystems and the nutrient concentrations as a function of force which influences the decomposition process, this study aims to relate the enzymatic activity and lignocellulose hydrolysis in different trophic statuses. Water samples and two macrophyte spe
Braz. J. Microbiol.. Publicado em: 2016-06
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8. Influence of season, environment and feeding habits on the enzymatic activity of peptidase and β-glucosidase in the gastrointestinal tract of two Siluriformes fishes (Teleostei)
The enzymatic activities involved in the digestion of proteins and carbohydrates were compared among three organs of the digestive track of two Siluriformes fish species, and between two areas: a reservoir, and an area downriver of it. Our aim was to test the hypothesis that the digestive organs of species with varied feeding habits have different enzymatic
Zoologia (Curitiba). Publicado em: 2013-06
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9. Trophic relationships between macroinvertebrates and fish in a pampean lowland stream (Argentina)
The diet and trophic relationships between the macroinvertebrates Phyllogomphoides joaquini Rodrigues Capítulo, 1992 and Coenagrionidae (Odonata), Chironomidae (Diptera), Diplodon delodontus (Lamarck, 1919) (Bivalvia: Hyriidae), and Pomacea canaliculata (Lamarck, 1822) (Gastropoda: Ampulariidae) and the fishes Pimelodella laticeps Eigenmann, 1917 (Heptapter
Iheringia, Sér. Zool.. Publicado em: 2013-03
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10. Ecophysiological responses to the effect of annual management on an endemic viviparous fish in central plateau of Mexico
Studies on the biological aspects of fish typically focus on species that currently have commercial value, causing species that lack such market value to be ignored. This is the case of several freshwater fish, specifically of several members of the Goodeidae family. In the State of Querétaro there are several species of this family characterized for being
Neotrop. ichthyol.. Publicado em: 2013-03
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11. Fish diet composition in permanent and semi-permanent pools in tropical wetlands of the Yucatan Peninsula
We compared fish diet composition between permanent (P) and semi-permanent (SP) pools in Petenes Biosphere Reserve (PBR), Campeche. A total of 445 gut contents were examined to determine stomach relative fullness (RF), fish diet as index of niche breadth (INB) and diet overlap. In SP pools, species showed a RF of 1.66 (57.20 % empty stomachs) whereas in P po
Neotrop. ichthyol.. Publicado em: 2013
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12. Diet and functional feeding groups of Chironomidae (Diptera) in the Middle Paraná River floodplain (Argentina)
The gut contents of nine genera of benthic Chironominae and Tanypodinae from the Middle Paraná River floodplain habitats (a lake and a secondary channel) were analyzed to determine their feeding patterns and functional feeding groups. Amorphous detritus, animal and vegetal tissues, and mineral materials (predominantly sand) were observed in the larval guts.
Iheringia. Série Zoologia. Publicado em: 2012-06