Effects of daily changes in environmental factors on the abundance and richness of Odonata

Fulan, João Ânderson; Henry, Raoul; Davanso, Rosemary Cristina Souza

doi:10.4322/actalb.2011.015

Cited by 9 publications

(5 citation statements)

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“…However, there are cases in which species of the genus Erythrodiplax were established as bioindicators, for example, in the Cerrado biome, were the genus indicated pasture environments and non-shaded areas (Dutra & De Marco 2015). The suggestion of the species Telebasis corallina and Erythemis credula as bioindicators may be associated with the presence of macrophytes or with the physical and chemical parameters of the sampled locations (Fulan et al 2011). In this context, species of Zygoptera, such as Telebasis corallina, are more vulnerable to changes in landscape structure and vegetation cover and may become locally extinct (Monteiro-Júnior et al 2015).…”

Section: Discussionmentioning

confidence: 99%

Effects of urbanization on the fauna of Odonata on the coast of southern Brazil

et al. 2021

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Urbanization significantly increases the rates of environmental disturbance, being one of the main causes of habitat loss and biodiversity. The growing trend of converting the natural landscape into areas for real estate speculation in the coastal region of the southernmost part of Brazil is a current concern, as the region is home to unique ecosystems, such as dunes, wetlands and large brackish lagoons. As they are organisms sensitive to environmental changes, variations in the structure of Odonata communities are used as indicators of habitat quality reflecting the human impact on the environment. Here we assessed how the Odonata community is affected by the growing urbanization around natural ponds on the coast of the state of Rio Grande do Sul, testing the hypothesis that the increase in the percentage of urbanization negatively influences the Odonata community, following the same pattern found for other groups of invertebrates. The collections took place in 28 coastal ponds, which were classified as urbanized and non-urbanized based on the surrounding ground cover. Anisoptera’s richness, abundance and composition were influenced by urbanization, but the same was not found for Zygoptera. The analysis of indicator species specifies three species associated with non-urbanized areas: Erythrodiplax sp.1, Erythemis credula and Telebasis corallina. Our study highlights the importance of Odonata as organisms that indicate environmental integrity and reinforces the need for urban planning strategies that favor the conservation and maintenance of the environments affected by urbanization.

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Section: Discussionmentioning

confidence: 99%

Effects of urbanization on the fauna of Odonata on the coast of southern Brazil

et al. 2021

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“…Dissolved oxygen is also an important predictor in the community structure of some genera and can have a strong influence on the reproductive strategies of most species. This may be related to oviposition behavior, as adult females may select the most appropriate habitats for oviposition, mainly ovipositing in more oxygenated waters [102,103].…”

Section: Discussionmentioning

confidence: 99%

Changes of Phylogenetic and Taxonomic Diversity of Odonata (Insecta) in Response to Land Use in Amazonia

Carvalho

Duarte

Nakamura

et al. 2021

Forests

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Changes in natural habitats for human use can alter the distribution of biodiversity, favoring species that are more tolerant to environmental disturbance. Usually, these species comprise clades of habitat generalists, which have biological mechanisms to colonize environments with different environmental conditions. However, such effects are still poorly understood for most biological groups, such as the Amazon odonates. Therefore, this study aims to evaluate the effects of land use along an environmental gradient on the phylogenetic and taxonomic diversity of Odonata in the Amazon. We tested the following hypotheses: In deforested areas (e.g., pasture for cattle, palm plantation, and logging), the Odonata community will be more taxonomically and phylogenetically impoverished than in forested areas. We assume that the modification of the natural habitat causes loss of specialist forest species and favors specialist species of open areas and/or habitat generalists. Data sampling was performed in 195 streams under different land-use types: livestock areas, palm monoculture, timber exploitation, and forest areas taken as reference sites. Our results showed that anthropogenic impacts affected the phylogenetic diversity of odonates and the increase in shrub vegetation was related to the increase in the phylogenetic diversity of communities. On the other hand, shrub vegetation is indicative of disturbed areas, where secondary vegetation predominates, with less canopy cover due to the absence or discontinuity of the native tree cover in these habitats. Nonetheless, species richness and abundance were not related to the effects of anthropogenic land use. Finally, our results suggest that the phylogenetic diversity of Amazonian odonates is related to riparian vegetation structure.

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“…This is in contradiction with a report by Silva and Henry (2013) that the richness and abundance of macroinvertebrates associated with Eichhornia azurea were greater in the period when the river-lake connectivity was higher; they explained this in terms of the probable influence of the flood pulse, which would favor greater heterogeneity of habitats for the community. Fulan et al (2011) recorded that Lake Cavalos, despite being small and isolated, has a considerable density of fish, which can prey on Odonata larvae. This predation could equally apply to coleopterans; indeed, in this lake, a smaller number of specimens were collected than in the other lakes in this study.…”

Section: Discussionmentioning

confidence: 99%

Coleoptera associated with macrophytes of the genus Salvinia in four oxbow lakes in two river basins in southeast Brazil

Paula-Bueno

Fonseca-Gessner

2015

Braz. J. Biol.

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Macrophytes in oxbow lakes represent an important substrate for the Coleoptera. Two oxbow lakes the Rio Paranapanema were studied and the other two Rio Mogi-Guaçu, in the State de São Paulo, Brasil. In this study, there is greater similarity between the communities of Coleoptera of lakes greater connectivity with the main river channel or the difference in the species of Salvinia collected in the lakes studied interferes Coleoptera fauna that uses as substrate. A total of 9,222 specimens of Coleoptera were collected and identified in 10 families and 40 genera. The analysis MDS for abundance of Coleoptera showed the grouping of the oxbow lakes the Paranapanema River and a distancing the oxbow lakes the Mogi-Guaçu. The PERMANOVA test did not reveal any difference in the fauna between the wet and dry periods. It was concluded that the connectivity between river and lake is not decisive for the richness and abundance of aquatic fauna of Coleoptera. Therefore, the richness and abundance of aquatic Coleoptera associated vary with the species of Salvinia used as substrate.Keywords: aquatic macrophytes, oxbow lakes, aquatic insects, phytofauna. Coleoptera associados à Salvinia em quatro lagoas marginais pertencentes a duas bacias hidrográficas no estado de São Paulo, Brasil ResumoAs macrófitas em lagoas marginais constituem um importante substrato para os Coleoptera. Foram estudadas duas lagoas marginais ao Rio Paranapanema e outras duas ao Rio Mogi-Guaçu, no estado de São Paulo, Brasil. Neste estudo, haverá maior similaridade entre as comunidades de Coleoptera das lagoas de maior conectividade com o canal princial do rio ou a diferença na espécie de Salvinia coletada nas lagoas estudadas interfere na fauna de Coleoptera que a utiliza como substrato. Foram coligidos 9.222 espécimes de Coleoptera sendo identificadas 10 famílias e 40 gêneros. A análise MDS para abundância de Coleoptera mostrou o agrupamento das lagoas marginais ao Rio Paranapanema e um distanciamento das lagoas marginais ao Rio Mogi-Guaçu. Os resultados da análise PERMANOVA não mostraram diferença na composição faunística entre os períodos de chuva e seca. Concluiu-se que a conectividade entre rio e lagoa não é determinante para a riqueza e abundância da fauna de Coleoptera aquáticos. Portanto, a riqueza e a abundância de Coleoptera aquáticos associados variam com as espécies de Salvinia utilizadas como substrato.Palavras-chave: macrófitas aquáticas, lagoas marginais, insetos aquáticos, fitofauna.

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Effects of daily changes in environmental factors on the abundance and richness of Odonata

Cited by 9 publications

References 1 publication

Effects of urbanization on the fauna of Odonata on the coast of southern Brazil

Effects of urbanization on the fauna of Odonata on the coast of southern Brazil

Changes of Phylogenetic and Taxonomic Diversity of Odonata (Insecta) in Response to Land Use in Amazonia

Coleoptera associated with macrophytes of the genus Salvinia in four oxbow lakes in two river basins in southeast Brazil

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