Effect of tree plantations on the functional composition of Odonata species in the highlands of southern Brazil

Dalzochio, Marina Schmidt; Périco, Eduardo; Renner, Samuel; Sahlén, Göran

doi:10.1007/s10750-017-3431-9

Cited by 34 publications

(28 citation statements)

References 101 publications

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“…the replacement of specialists by generalists in species assemblages, as shown by Polus, Vandewoestijne, Choutt, & Baguette (2007) with butterflies in Belgium. Likewise, biotic homogenization through the spread of wood plantations has proven to have negative effects on both taxonomic and functional diversity of Odonata studied in the Neotropics (Dalzochio, Périco, Renner, & Sahlén, 2018) and in the Indo-Malayan region (Dolný, Harabiš, Bárta, Lhota, & Drozd, 2012), which is in accordance with our results. Grazing, as a dominant form of agricultural activity (based on the percentages mentioned above), influences insects in several ways.…”

Section: Discussionsupporting

confidence: 92%

Insect threats and conservation through the lens of global experts

Miličić

Popov

Branco

et al. 2020

Preprint

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While many recent studies have focused on global insect population trends, all are limited either in space or taxonomic scope. Since global monitoring programs for insects are not implemented, biased data are therefore the norm. However, expert opinion is both valuable and widely available, and should be fully exploited when hard data are not available. Our aim is to use global expert opinion to provide insights on the root causes of potential insect declines worldwide, as well as on effective conservation strategies that could mitigate insect biodiversity loss. We obtained 753 responses from 413 respondents with a wide variety of expertise. The most relevant threats identified through the survey were agriculture and climate change, followed by pollution, while land management and land protection were recognized as the most significant conservation measures. Nevertheless, there were differences across regions and insect groups, reflecting the variability within the most diverse class of living organisms on our planet. Lack of answers for certain biogeographic regions or taxa also reflects the need for research, particularly in less investigated settings. Our results provide a first step towards understanding global threats and conservation measures for insects.

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Section: Discussionsupporting

confidence: 92%

Insect threats and conservation through the lens of global experts

Miličić

Popov

Branco

et al. 2020

Preprint

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“…In addition, to complement the previous analysis, the spatial independence at all pitfall traps in the given distance class related to taxonomic composition was tested using Moran's I Analysis (Moran, 1950). We used the resulting values of the taxonomic composition for a Principal Components Analysis (PCA) where the first axis was used as response variable to the Moran's I, with coordinate variables for ten different distance classes (Dalzochio et al, 2017). A global Moran's I analysis detected no significant spatial structure of the taxonomic composition for any distance class (Moran's I = −0.48; p = 0.74).…”

Section: Preliminary Data Analysismentioning

confidence: 99%

How informative is the response of Ground Beetles' (Coleoptera: Carabidae) assemblages to anthropogenic land use changes? Insights for ecological status assessments from a case study in the Neotropics

Cajaíba

Périco

Silva

et al. 2018

Science of The Total Environment

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Ground Beetles (Carabidae) have been suggested to be used as indicators of ecological status under the effects of anthropogenic land use and land cover changes in highly biodiverse regions such as the Neotropics. In this study Ground Beetles' assemblages from a region in the Brazilian Amazon were investigated for evaluating their applicability as disturbance indicators. Differences in assemblages between ecosystems, discriminated by complimentary methodologies, demonstrate a sensitive reaction from the most pristine forests to increasingly disturbed systems. Besides capturing the influence of different prevailing conditions between ecosystems, Ground Beetles are easy to communicate and to link with the other components of the system, being effortless and routinely measurable using standard methodologies. This study represents a step forward in using Ground Beetles for the purposes of planning, management and public reporting on the ecological status of Neotropical ecosystems. Additionally, the methods depicted could support projections for trends of relevant ecosystem attributes under realistic social-ecological change scenarios, which can be used to guide effective conservation planning.

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“…This can be the case of species found in urbanized environments: Acanthagrion gracile, Acanthagrion lancea, Erythemis attala, Erythrodiplax melanorubra, Erythrodiplax nigricans, Lestes undulatus, Micrathyria catenata, Orthemis discolor and Tramea binotata. Most species belonging to the genera Acanthagrion, Erythemis, Erythrodiplax, Lestes, Micrathyria and Orthemis are considered generalists (Dalzochio et al 2018b). They have short life cycles and adapt very quickly to environmental changes, being found even in very hostile environments.…”

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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Effect of tree plantations on the functional composition of Odonata species in the highlands of southern Brazil

Cited by 34 publications

References 101 publications

Insect threats and conservation through the lens of global experts

Insect threats and conservation through the lens of global experts

How informative is the response of Ground Beetles' (Coleoptera: Carabidae) assemblages to anthropogenic land use changes? Insights for ecological status assessments from a case study in the Neotropics

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

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