Community structure of dung beetles in Amazonian savannas: role of fire disturbance, vegetation and landscape structure

Louzada, Júlio; Lima, Albertina P.; Matavelli, Rodrigo; Zambaldi, Ludimila; Barlow, Jos

doi:10.1007/s10980-010-9448-3

Cited by 59 publications

(43 citation statements)

References 57 publications

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“…louzada & loPes, 1997;vaz-de-mello, 1999;medri & loPes, 2001;milhomem et al, 2003;eNdres et al, 2007;louzada et al, 2007;filGueiras et al, 2009;herNáNdez & vaz-de-mello, 2009;loPes et al, 2011loPes et al, ) quanto campestres (e.g. matavelli & louzada, 2008koller et al, 2007;louzada & silva, 2009;louzada et al, 2010;loPes et al, 2011) no Brasil e em vários outros países neotropicais (e.g. halffter et al, 1992;morelli et al, 2002;sPector & ayzama, 2003;martíNez et al, 2009 1997;louzada et al, 2007;herNáNdez & vaz-de-mello, 2009;audiNo et al, 2011;loPes et al, 2011).…”

Section: Discussionunclassified

Escarabeíneos copro-necrófagos (Coleoptera, Scarabaeidae, Scarabaeinae) de fragmentos de Mata Atlântica em Silveira Martins, Rio Grande do Sul, Brasil

Silva

Mare

2012

Iheringia, Sér. Zool.

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ABSTRACT. Copro-necrophagous beetles (Coleoptera: Scarabaeidae: Scarabaeinae) from Atlantic Forest fragments of Silveira Martins, Rio Grande do Sul, Brazil. The fauna of Scarabaeinae (Coleoptera: Scarabaeidae) was sampled using pitfall traps baited with human excrement and rotten fish in forest fragments in Silveira Martins, Rio Grande do Sul, Brazil, from November 2010 to January 2011. A total of 1,611 individuals were sampled, belonging to six tribes, 11 genera and 28 species. The most abundant species were Canthon latipes Blanchard, 1845 (49.9%), C. chalybaeus Blanchard, 1845 (13.9%), Deltochilum sculpturatum Felsche, 1907 (4.9%), and Eurysternus caribaeus (Herbst, 1789) (4.3%), which accounted for 73% of the total individuals captured. Traps baited with human excrement captured a higher number of species than those baited with rotten fish. There was no statistically significant difference between the kinds of baits used in relation to the abundance of Scarabaeinae. Most of Scarabaeinae species was represented by generalist feeding habits and tunneler behavior. The community sampled follows the general patterns of trophic and behavioral structure of Scarabaeinae found throughout the Neotropical region.

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Section: Discussionunclassified

Escarabeíneos copro-necrófagos (Coleoptera, Scarabaeidae, Scarabaeinae) de fragmentos de Mata Atlântica em Silveira Martins, Rio Grande do Sul, Brasil

Silva

Mare

2012

Iheringia, Sér. Zool.

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“…Developing management practices that conserve biodiversity in the face of altered fire regimes is now critical in many regions of the world (Driscoll et al 2010a;Fattorini 2010;Louzada et al 2010;Pons and Clavero 2010;van Wilgen et al 2010). To better inform management, research that addresses the responses of a range of plants and animals to fire is needed.…”

Section: Introductionmentioning

confidence: 99%

Reptile responses to fire and the risk of post-disturbance sampling bias

et al. 2012

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Altered fire regimes are a driver of biodiversity decline. To plan effective management, we need to know how species are influenced by fire and to develop theory describing fire responses. Animal responses to fire are usually measured using methods that rely on animal activity, but animal activity may vary with time since fire, potentially biasing results. Using a novel approach for detecting bias in the pit-fall trap method, we found that leaf-litter dependent reptiles were more active up to 6 weeks after fire, giving a misleading impression of abundance. This effect was not discovered when modelling detectability with zero-inflated binomial models. Two species without detection bias showed early-successional responses to time since fire, consistent with a habitat-accommodation succession model. However, a habitat specialist did not have the predicted low abundance after fire due to increased post-fire movement and non-linear recovery of a key habitat component. Interactions between fire and other processes therefore must be better understood to predict reptile responses to changing fire-regimes. We conclude that there is substantial bias when trapping reptiles after fire, with species that are otherwise hard to detect appearing to be abundant. Studies that use a survey method based on animal activity such as bird calls or animal movements, likely face a similar risk of bias when comparing recently-disturbed with control sites.Electronic supplementary material The online version of this article (

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“…Of the environmental factors measured in this study, the most important was canopy cover. This variable is often reported in scientific literature as a proxy for habitat quality and resource availability for dung beetles (Halffter & Matthews, 1966; Halffter, 1991; Halffter & Arellano, 2002; Louzada et al, 2010; Audino, Louzada & Comita, 2014). Although soil and vegetation parameters can influence dung beetle communities (Gries et al, 2012; Farias et al, 2015), because they can affect larvae survival (Osberg, Doube & Hanrahan, 1994; Davis et al, 2010), the present work found LH and SS not liable for determining dung beetle community structure.…”

Section: Discussionmentioning

confidence: 99%

Variegated tropical landscapes conserve diverse dung beetle communities

Costa

Oliveira

Maciel

et al. 2017

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BackgroundConserving biodiversity in tropical landscapes is a major challenge to scientists and conservationists. Current rates of deforestation, fragmentation, and land use intensification are producing variegated landscapes with undetermined values for the conservation of biological communities and ecosystem functioning. Here, we investigate the importance of tropical variegated landscapes to biodiversity conservation, using dung beetle as focal taxa.MethodsThe study was carried out in 12 variegated landscapes where dung beetles were sampled using six pitfall traps, 30 m apart from each other, along a transect in each studied landscape use and cover classes—LUCC (forest fragment and corridor, coffee plantation, and pasture). We baited each pitfall trap with 30 g of human feces and left open for a 48 h period. We also measured three environmental variables reflecting structural differences among the studied classes: canopy cover, local vegetation heterogeneity and soil sand content.ResultsWe collected 52 species and 2,695 individuals of dung beetles. We observed significant differences in the mean species richness, abundance and biomass among classes, with forest fragments presenting the highest values, forest corridors and coffee plantations presenting intermediate values, and pastures the lowest values. Regarding community structure, we also found significant differences among classes. Canopy cover was the only variable explaining variation in dung beetle species richness, abundance, biomass, and community structure. The relative importance of spatial turnover was greater than nestedness-resultant component in all studied landscapes.DiscussionThis study evaluated the ecological patterns of dung beetle communities in variegated tropical landscapes highlighting the importance of these landscapes for conservation of tropical biodiversity. However, we encourage variegation for the management of landscapes that have already been fragmented or as a complementary initiative of current conservation practices (e.g., protection of natural habitats and establishment of reserves).

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Community structure of dung beetles in Amazonian savannas: role of fire disturbance, vegetation and landscape structure

Cited by 59 publications

References 57 publications

Escarabeíneos copro-necrófagos (Coleoptera, Scarabaeidae, Scarabaeinae) de fragmentos de Mata Atlântica em Silveira Martins, Rio Grande do Sul, Brasil

Escarabeíneos copro-necrófagos (Coleoptera, Scarabaeidae, Scarabaeinae) de fragmentos de Mata Atlântica em Silveira Martins, Rio Grande do Sul, Brasil

Reptile responses to fire and the risk of post-disturbance sampling bias

Variegated tropical landscapes conserve diverse dung beetle communities

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