Navegando por Autor "Dias-Silva, Karina"

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Artigo
Chiropterofauna (Mammalia: Chiroptera) from the Altamiro de Moura Pacheco State Park, Goiás, Brazil
(2024-01-09) Carvalho, Erica Santos de; Pena, Simone Almeida; Alexandre, Rafaela Jemely Rodrigues; Dias-Silva, Karina; Bastos, Rogério Pereira; Oprea, Monik; Brito, Daniel; Silva, Jessica Conceição da; Vieira, Thiago Bernardi
The Brazilian Cerrado is undergoing important changes. It is estimated that 70% of its natural area has converted to human use. The loss and fragmentation of natural habitats is considered the main cause of species loss in ecosystems. However, the lack of knowledge of biodiversity makes it difficult to design effective conservation measures. This article presents a list and an estimate of the richness of bats in the Parque Estadual Altamiro de Moura Pacheco (PEAMP) in Goiás. All collected bats belong to the Phyllostomidae family, with Carollia perspicillata (67%) and Artibeus planirostris (18%) representing 86% of the captured individuals.
Artigo
Squamate reptiles as indicators in fragments of Brazilian cerrado
(2023-11-13) Alexandre, Rafaela ; Bergamini, Filipe ; Spigoloni, Zander ; Dias-Silva, Karina; Vieira, Raísa ; Guerra, Vinícius; Bastos, Rogério ; Vieira, Thiago
The data on the reptilian fauna of the state of Goiás are one-off and reveal a lack of information about this group. The aim of the research was to know the composition of the reptile fauna within the area of the Anglo American mining company, evaluating the relationship of the species with the years, the types of environments and the presence of indicator species. Fieldwork was carried out during seven years, from 2007 to 2013. Sampling was performed through active search, pitfall traps, occasional encounters, and third-party records. We recorded 36 reptile species: 15 lizards and 21 snakes. The most common lizards were Anolis meridionalis, Cnemidophorus sp, and the most abundant snakes were Apostolepis cerradoensis and Bothrops moojeni. There was no relationship between the species and the years. On the other hand, there was relationship between the species and the environments or between the species and the types of habitats. The lizard Ameivula ocellifera was found as an indicator species of Cerrado areas, as well as the snake Leptotyphlops dulcis We have seen that lizards are specific to their habitat, making it essential to preserve open and forested areas for the conservation of the species that live there.
Artigo
Weak congruence between biological assemblages of streams and their relationship with the environmental gradient in the Cerrado-Amazon transition area, Brazil
(2023-03-31) Alexandre, Rafaela Jemely Rodrigues; Montag, Luciano Fogaça de Assis; Dias-Silva, Karina; Brasil, Leandro Schlemmer; Maracahipes-Santos, Leonardo; Batist, Joana Darc; Vieira, Thiago Bernardi
Congruence between taxa is the agreement between groups, it is used to find indicator taxa, being a quick and effective way to assess biodiversity. The objective of this work was to evaluate the congruence between fish assemblages, Heteroptera, Odonata in streams of the Amazon-Cerrado transition area. The study took place in 24 streams in the transition between the Cerrado and Amazon biomes, Brazil. The analysis results showed weak congruence between Odonata and Heteroptera for the two data sets. Disagree Odonata and fish showed weak congruence but signicant with abundance data, and with incidence data, the congruence was not significant. A similar result was obtained when analyzing fish and Heteroptera, which were not congruent with any of the datasets used. These findings were repeated when analyzing the suborder Zygoptera separately, instead of Odonata. The variance partition test, with abundance data, showed that both environmental variables and space are responsible for structuring the Heteroptera community, different fish, Odonata and Zygoptera did not respond to any of the analyzed variables, with incidence data no group showed a relationship with the environmental and spatial variables analyzed. The pRDA, with abundance data, confirmed the relationship of the Heteroptera assemblage with environmental and spatial variables, however, the other assemblages did not present significant results. With the incidence data, it was not significant for all assemblages. The weak congruence between the different groups can due to the different responses to the same environmental gradient, which was confirmed by the variance partition test.