In the Shadow of Trees: Does Eucalyptus Afforestation Reduce Herpetofaunal Diversity in Southern Brazil?

Saccol, Suélen da Silva Alves; Bolzan, Aline Adriana; Santos, Tiago Gomes dos

doi:10.2994/sajh-d-16-00028.1

Cited by 33 publications

(35 citation statements)

References 64 publications

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“…Knowledge gaps are wider for grassland landscapes than for tropical and subtropical forest habitats, but there is evidence that amphibian communities are impoverished in converted SBG habitats. For instance, conversion of native SBG areas into pine and Eucalyptus monocultures do not maintain the richness and composition of anuran amphibian communities reported in reference areas (Machado et al, 2012; Saccol et al, 2017). The same occurs in rice cultivation, where richness and abundance of anurans are lower than reported in native flooded grasslands (Machado & Maltchik, 2010).…”

Section: Discussionmentioning

confidence: 98%

The interplay between local and landscape scales on the density of pond‐dwelling anurans in subtropical grasslands

et al. 2020

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We investigated the role of local and landscape environmental variables on anurans density classified as habitat specialists and generalists in grassland landscapes, known as South Brazilian grasslands (SBG). In this region, we surveyed 187 ponds distributed over 40 landscape sampling units. For each pond, 31 local environmental variables were measured. Each landscape sampling unit was embedded within a larger regional sampling unit with different landscape properties. For each landscape and regional sampling units, 16 landscape metrics were extracted from a land cover and use map. We recorded 35 species, eleven of which are specialists in the SBG. The specialists were affected by 11 local and 2 landscape environmental variables, while generalists were affected by 14 local and one landscape environmental variable. Thus, specialists and generalists presented different relationships with local and landscape variables, but in general local variables had a greater influence on the density of anurans than the landscape variables. However, the landscape indirectly influenced local variables because higher quality ponds were in landscapes with higher percentages of natural habitat. In conclusion, reproductive sites with higher local quality and located within landscapes with higher percentages of natural grasslands are essential to conserve anurans in this habitat. Effective conservation of such sites would benefit from further studies that assess effects of land use and biotic integrity of ponds, which can help to determine (a) the relative effects of local habitat quality of ponds and (b) the effectiveness of protecting ponds and their local surroundings for anuran conservation in SBG.

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Section: Discussionmentioning

confidence: 98%

The interplay between local and landscape scales on the density of pond‐dwelling anurans in subtropical grasslands

et al. 2020

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“…Homogeneous microhabitats such as in the rice field reduce the number of niches which lead to the low diversity of herpetofauna (Muslim et al 2018). In addition, without litter and lack of tree canopy cover, the rice field has low relative humidity and high fluctuation of temperature between night and day, which cause herpetofauna diversity to decrease (Gillespie et al 2015;Saccol et al 2017;Kwatrina et al 2019).…”

Section: Ecological Indicesmentioning

confidence: 99%

Short Communication: The herpetofauna around human settlements in Lubuklinggau City, South Sumatra, Indonesia: Composition and diversity

Samitra

Rozi

2020

Biodiversitas

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Abstract. Samitra D, Rozi ZF. 2020. The herpetofauna around human settlements in Lubuklinggau City, South Sumatra, Indonesia: Composition and diversity. Biodiversitas 21: 1432-1437. Herpetofauna research has been conducted mostly in conservation forest areas, so little is known about herpetofauna outside the conservation areas, such as those around the human settlements. The data of herpetofauna near human settlements are important in carrying out conservation actions. This study aimed to determine the diversity of herpetofauna around human settlements in the city of Lubuklinggau. The study was conducted from February to August 2019. Herpetofauna samples were taken in three habitats around settlements, i.e., plantation, rice field, and river. Sampling was done with the method of visual encounter survey and time-constrained search. The data were analyzed using ecological indexes, i.e., relative abundance, and indexes of diversity, evenness, similarity, and dominance. The results showed that 378 individuals of herpetofauna were found, belonging to 27 species (12 amphibians and 15 reptiles). Eighteen species were found in the plantation (7 amphibians and 11 reptiles), 15 species in the river (10 amphibians and 5 reptiles), and 14 species in the rice field (6 amphibians and 8 reptiles). Similarity index analysis showed that the rice field had quite different species from other habitats. The herpetofauna diversity around settlements was categorized as medium.

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“…Indeed, herpetological diversity is known to decrease in areas altered by silviculture in southern Brazil (e.g. Machado et al, 2012;Saccol et al, 2017) and in areas across the globe (e.g. Popescu and…”

Section: Complex Relations Between Traits and Environment In Anuransmentioning

confidence: 99%

“…Hunter Jr., 2011). The presence of exotic plantations affects the local conditions of the ponds, leading to biotic homogenization between environments and consequently reducing functional and taxonomic diversity on the long-term (Machado et al, 2012;Saccol et al, 2017).…”

Section: Complex Relations Between Traits and Environment In Anuransmentioning

confidence: 99%

Turnover or Intraspecific Trait Variation: Explaining Functional Variability in a Neotropical Anuran Metacommunity

Dalmolin

2020

Preprint

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Trait variation across environmental gradients results from two processes: intraspecific variation (ITV) and turnover. Tadpoles are known to exhibit phenotypic plasticity in several traits in response to the environment, resulting from intra or interspecific variation. Here we evaluate patterns of intraspecific variation in functional traits of adult anurans (head shape, eye size and position, limb length and body mass) and their relationship with environmental variables in an anuran metacommunity in southern Brazil. From anurans sampled from 33 ponds, we decomposed trait variation into ITV and turnover and modelled trait-environment relationships. We predict that the contribution of ITV and turnover to trait variation and trait-environment relationships should vary according to the preferred habitat of the species and the analysed traits. Intraspecific variation accumulated the highest rate of trait variation for arboreal species, while interspecific variation was greater for aquatic-terrestrial species and for the whole set of species. The contributions of turnover and ITV to shifts in community mean trait values were similar between traits, but differed between species sets. Depth, distance between ponds, area of Pinus surrounding the ponds, and types of pond vegetation and substrate strongly influenced trait variation, but their relative contribution depended on the analysed traits and species sets. The great contribution of ITV for head shape and eye size and position suggests the existence of intraspecific adaptations to microhabitats, while turnover dominance in the variation of body mass and limb 3 length suggests differences in dispersal and trophic segregation between species.

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In the Shadow of Trees: Does Eucalyptus Afforestation Reduce Herpetofaunal Diversity in Southern Brazil?

Cited by 33 publications

References 64 publications

The interplay between local and landscape scales on the density of pond‐dwelling anurans in subtropical grasslands

The interplay between local and landscape scales on the density of pond‐dwelling anurans in subtropical grasslands

Short Communication: The herpetofauna around human settlements in Lubuklinggau City, South Sumatra, Indonesia: Composition and diversity

Turnover or Intraspecific Trait Variation: Explaining Functional Variability in a Neotropical Anuran Metacommunity

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