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Papers by Vinicius Sperandei
Ecological Entomology, 2020
Gall‐inducers can be considered ecosystem engineers when they modify leaf morphology and create s... more Gall‐inducers can be considered ecosystem engineers when they modify leaf morphology and create shelters for secondary users, altering properties of ecological communities. In this study, we evaluated whether shelter structures created by leaf‐galling contribute to changes in the diversity and composition of the community at plant and leaf scales, the effects of leaf roll occupation on the choice of secondary colonisers and the influence of leaf shelters on herbivory levels on host plants. The arthropod abundance, richness, and biomass were higher in leaf shelters compared to intact leaves. These effects were observed at similar magnitudes at both plant and leaf scales. The composition of arthropods differed between plants with leaf‐rolled galls and plants with galls removed and between unoccupied leaf rolls and intact leaves. Artificial leaf rolls increased arthropod abundance, richness, and biomass by almost 100.0% compared to intact leaves. However, occupied artificial leaf rolls...
Ecological Entomology, 2021
Gall‐inducers can be considered ecosystem engineers when they modify leaf morphology and create s... more Gall‐inducers can be considered ecosystem engineers when they modify leaf morphology and create shelters for secondary users, altering properties of ecological communities. In this study, we evaluated whether shelter structures created by leaf‐galling contribute to changes in the diversity and composition of the community at plant and leaf scales, the effects of leaf roll occupation on the choice of secondary colonisers and the influence of leaf shelters on herbivory levels on host plants. The arthropod abundance, richness, and biomass were higher in leaf shelters compared to intact leaves. These effects were observed at similar magnitudes at both plant and leaf scales. The composition of arthropods differed between plants with leaf‐rolled galls and plants with galls removed and between unoccupied leaf rolls and intact leaves. Artificial leaf rolls increased arthropod abundance, richness, and biomass by almost 100.0% compared to intact leaves. However, occupied artificial leaf rolls had a decrease in abundance, richness, and biomass of arthropods by almost 60.0% compared to unoccupied leaf rolls. Finally, plants with galls removed exhibited higher levels of leaf herbivory than plants with leaf‐rolled galls. Our findings demonstrated the strong and positive indirect effects of gall induction facilitating shelter creation and the indirect effects of shelters on the diversity, species composition, and on leaf herbivory, and should be replicated in other systems involving plants and their respective gallers.
Resumen: Efectuamos el inventario de la herpetofauna de las proximidades de la Caverna Planaltina... more Resumen: Efectuamos el inventario de la herpetofauna de las proximidades de la Caverna Planaltina, municipio de Brasil Novo – Sudoeste del Estado do Pará, Brasil. Fueron registradas 30 especies de anuros, 13 de serpientes y siete de lagartos. La familia Hylidae fue la más abundante con 13 especies. Con 11 especies, la familia Colubridae fue la más diversa entre las Serpientes y entre los lagartos, las familias Sphaerodactylidae y Gymnophthalmidae, fueron las más diversas, cada una con dos especies. La especie Pseudopaludicola canga (Lissamphibia, Leiuperidae) fue la más abundante entre los anfibios, con 15 individuos recolectados. Bothrops atrox (Squamata, Viperidae) fue la serpiente más común, con seis ejemplares recolectados. Entre los lagartos, Chatogekko amazonicus (Squamata, Sphaerodactylidae) y Arthrosaura reticulata (Squamata, Gymnophthalmidae), fueron los más abundantes. La parte alta de la propiedad presentó el mayor índice de abundancia y riqueza, con 51 individuos y 24 especies. Nuevos datos sobre historia natural y distribución de especies fueron registrados durante este estudio. Abstract: E. A Oliveira, E. J. Hernández-Ruz, F. B. Barros. " Herpetofauna of the vicinities of Planaltina Cave, Brasil Novo, Pará (Brazilian Amazon) ". We conducted an inventory of the herpetofauna of the vicinities of the Planaltina Cave, municipality of Brazil Novo-Southwest Pará State, Brazil. We recorded 30 species of frogs, 13 lizards and seven snakes. The family Hylidae was the most abundant with 13 species. The family Colubridae was the most diverse for snakes with 11 species and for lizards, the families Gymnophthalmidae and Sphaerodactylidae, each with two species. The species Pseudopaludicola canga (Lissamphibia, Leiuperidae) was the most abundant with 15 individuals collected. Bothrops atrox (Squamata, Viperidae) was the most common snake with six specimens collected. For lizards, Chatogekko amazonicus (Squamata, Sphaerodactylidae) and Arthrosaura reticulata (Squamata, Gymnophthalmidae) with two individuals each. The top of the property had the highest index of abundance and richness, with 51 individuals and 24 species. New data on natural history and distribution of species were recorded during this study.
Resumo Existem algumas formas de relevo em rochas não carbonáticas que se assemelham ao relevo no... more Resumo Existem algumas formas de relevo em rochas não carbonáticas que se assemelham ao relevo normalmente encontrado no calcário. Tais formas são carste, a partir do momento em que a dissolução tem um papel fundamental (embora não necessari-amente predominante) no desenvolvimento destas. Este estudo apresenta a evolução do conceito de carste, sugerindo que os processos de intemperismo químico que originam formas cársticas em ambientes próximos a superfície, nas rochas não carbonáticas, são mais frequentes que se pensava. Palavras-chave: carste, processos cársticos, formas cársticas. Abstract Some landforms on non carbonate rocks closely resemble those commonly found on limestone. These forms are karst, since dissolution has played a critical (but not necessarily dominant) role. This study presents the evolution on the concept of karst applied to non carbonate rocks, suggesting that chemical weathering what originates karst landforms on these rocks, is more frequent in near surface environments than it was originally thought.
Ecological Entomology, 2020
Gall‐inducers can be considered ecosystem engineers when they modify leaf morphology and create s... more Gall‐inducers can be considered ecosystem engineers when they modify leaf morphology and create shelters for secondary users, altering properties of ecological communities. In this study, we evaluated whether shelter structures created by leaf‐galling contribute to changes in the diversity and composition of the community at plant and leaf scales, the effects of leaf roll occupation on the choice of secondary colonisers and the influence of leaf shelters on herbivory levels on host plants. The arthropod abundance, richness, and biomass were higher in leaf shelters compared to intact leaves. These effects were observed at similar magnitudes at both plant and leaf scales. The composition of arthropods differed between plants with leaf‐rolled galls and plants with galls removed and between unoccupied leaf rolls and intact leaves. Artificial leaf rolls increased arthropod abundance, richness, and biomass by almost 100.0% compared to intact leaves. However, occupied artificial leaf rolls...
Ecological Entomology, 2021
Gall‐inducers can be considered ecosystem engineers when they modify leaf morphology and create s... more Gall‐inducers can be considered ecosystem engineers when they modify leaf morphology and create shelters for secondary users, altering properties of ecological communities. In this study, we evaluated whether shelter structures created by leaf‐galling contribute to changes in the diversity and composition of the community at plant and leaf scales, the effects of leaf roll occupation on the choice of secondary colonisers and the influence of leaf shelters on herbivory levels on host plants. The arthropod abundance, richness, and biomass were higher in leaf shelters compared to intact leaves. These effects were observed at similar magnitudes at both plant and leaf scales. The composition of arthropods differed between plants with leaf‐rolled galls and plants with galls removed and between unoccupied leaf rolls and intact leaves. Artificial leaf rolls increased arthropod abundance, richness, and biomass by almost 100.0% compared to intact leaves. However, occupied artificial leaf rolls had a decrease in abundance, richness, and biomass of arthropods by almost 60.0% compared to unoccupied leaf rolls. Finally, plants with galls removed exhibited higher levels of leaf herbivory than plants with leaf‐rolled galls. Our findings demonstrated the strong and positive indirect effects of gall induction facilitating shelter creation and the indirect effects of shelters on the diversity, species composition, and on leaf herbivory, and should be replicated in other systems involving plants and their respective gallers.
Resumen: Efectuamos el inventario de la herpetofauna de las proximidades de la Caverna Planaltina... more Resumen: Efectuamos el inventario de la herpetofauna de las proximidades de la Caverna Planaltina, municipio de Brasil Novo – Sudoeste del Estado do Pará, Brasil. Fueron registradas 30 especies de anuros, 13 de serpientes y siete de lagartos. La familia Hylidae fue la más abundante con 13 especies. Con 11 especies, la familia Colubridae fue la más diversa entre las Serpientes y entre los lagartos, las familias Sphaerodactylidae y Gymnophthalmidae, fueron las más diversas, cada una con dos especies. La especie Pseudopaludicola canga (Lissamphibia, Leiuperidae) fue la más abundante entre los anfibios, con 15 individuos recolectados. Bothrops atrox (Squamata, Viperidae) fue la serpiente más común, con seis ejemplares recolectados. Entre los lagartos, Chatogekko amazonicus (Squamata, Sphaerodactylidae) y Arthrosaura reticulata (Squamata, Gymnophthalmidae), fueron los más abundantes. La parte alta de la propiedad presentó el mayor índice de abundancia y riqueza, con 51 individuos y 24 especies. Nuevos datos sobre historia natural y distribución de especies fueron registrados durante este estudio. Abstract: E. A Oliveira, E. J. Hernández-Ruz, F. B. Barros. " Herpetofauna of the vicinities of Planaltina Cave, Brasil Novo, Pará (Brazilian Amazon) ". We conducted an inventory of the herpetofauna of the vicinities of the Planaltina Cave, municipality of Brazil Novo-Southwest Pará State, Brazil. We recorded 30 species of frogs, 13 lizards and seven snakes. The family Hylidae was the most abundant with 13 species. The family Colubridae was the most diverse for snakes with 11 species and for lizards, the families Gymnophthalmidae and Sphaerodactylidae, each with two species. The species Pseudopaludicola canga (Lissamphibia, Leiuperidae) was the most abundant with 15 individuals collected. Bothrops atrox (Squamata, Viperidae) was the most common snake with six specimens collected. For lizards, Chatogekko amazonicus (Squamata, Sphaerodactylidae) and Arthrosaura reticulata (Squamata, Gymnophthalmidae) with two individuals each. The top of the property had the highest index of abundance and richness, with 51 individuals and 24 species. New data on natural history and distribution of species were recorded during this study.
Resumo Existem algumas formas de relevo em rochas não carbonáticas que se assemelham ao relevo no... more Resumo Existem algumas formas de relevo em rochas não carbonáticas que se assemelham ao relevo normalmente encontrado no calcário. Tais formas são carste, a partir do momento em que a dissolução tem um papel fundamental (embora não necessari-amente predominante) no desenvolvimento destas. Este estudo apresenta a evolução do conceito de carste, sugerindo que os processos de intemperismo químico que originam formas cársticas em ambientes próximos a superfície, nas rochas não carbonáticas, são mais frequentes que se pensava. Palavras-chave: carste, processos cársticos, formas cársticas. Abstract Some landforms on non carbonate rocks closely resemble those commonly found on limestone. These forms are karst, since dissolution has played a critical (but not necessarily dominant) role. This study presents the evolution on the concept of karst applied to non carbonate rocks, suggesting that chemical weathering what originates karst landforms on these rocks, is more frequent in near surface environments than it was originally thought.