Spatial and environmental patterns of Amazonian anurans: Differences between assemblages with aquatic and terrestrial reproduction, and implications for conservation management

Landeiro, Victor Lemes; Waldez, Fabiano; Menin, Marcelo

doi:10.4322/natcon.2014.008

Cited by 26 publications

(33 citation statements)

References 20 publications

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“…Basins used more often by those species were located, respectively, between 10-80 m and 80-320 m from the forest edge. Amphibian species with aquatic reproduction are sensitive to environmental factors, which affect their occupation of the habitat (Landeiro et al, 2014) and, consequently, may affect the use of reproductive habitats. In fact, the use of ponds by anurans in the Amazon is influenced by factors such as habitat disturbance and presence of aquatic predators (Azevedo-Ramos et al, 1992;Hero et al, 1998;Neckel-Oliveira, 2007;Luiz, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Amphibian species with aquatic reproduction are more sensitive to environmental factors than those with terrestrial reproduction because they are unable to reproduce if any environmental change derails the formation of water bodies (Landeiro et al, 2014). Besides, amphibian species with aquatic reproduction are negatively affected by other disturbances, such as the disconnection of forest remnants and water bodies, which hinders the arrival of individuals in reproductive habitat and causes negative effects on species richness and/or composition (Becker et al, 2007(Becker et al, , 2010Almeida-Gomes & Rocha, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Are leaf-litter anurans with aquatic reproduction affected by distance to forest edge and presence of predators?

Correa¹,

Rodrigues

2015

Animal Biol

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Both habitat fragmentation and predator abundance are known to affect habitat use. The current study analyzed the use of ponds by leaf-litter anurans in relation to distance to the forest edge and presence of aquatic predators in a forest fragment in Eastern Amazon. We selected three trails perpendicular to the forest edge, and in each trail we positioned nine plastic basins on the forest floor at different distances from the forest edge. From November 2011 to July 2012, each basin was surveyed monthly for presence of evidence of anuran breeding activity and aquatic predators. We recorded 112 instances of use of basins by four anuran species. While we did not observe any influence of distance to the forest edge on use of basins by Rhinella gr. margaritifera and Ameerega trivittata, there was differential use of basins by both species in relation to the presence of aquatic predators. In both cases, species used basins more often when aquatic predators were absent, suggesting that these species adopt strategies that reduce effects of predation and ensures the survival of some tadpoles, either by carrying tadpoles to ponds without predators or producing larger clutches.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Are leaf-litter anurans with aquatic reproduction affected by distance to forest edge and presence of predators?

Correa¹,

Rodrigues

2015

Animal Biol

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“…Our results indicate that the spatial distance between ponds during the end of the dry season was not a determinant of anuran metacommunity structure in the Pantanal. Contrary to some studies of tropical anuran communities (Rojas‐Ahumada, Landeiro & Menin, ; Landeiro, Waldez & Menin, ; Provete et al ., ), we found no decrease in compositional similarity with an increase in interpond distance. The absence of spatial autocorrelation was probably not related to the size of our study area ( c. 50 km 2 ).…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, spatial processes due to dispersal limitation also play an important role on the dynamics of anuran metacommunities (Landeiro, Waldez & Menin, ; Prado & Rossa‐Feres, ; Provete et al ., ). In the same way, the spatial arrangement of habitat patches and the permeability of the surrounding terrestrial matrix may influence dispersal success of amphibians and, consequently, the occurrence and abundance of many species (Richter‐Boix, Llorente & Montori, ; Werner et al ., ; Landeiro, Waldez & Menin, ).…”

Section: Introductionmentioning

confidence: 99%

Evidence of stochasticity driving anuran metacommunity structure in the Pantanal wetlands

et al. 2015

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Summary The association of species distribution and abundance patterns with environmental and spatial variables is often used to identify signatures of niche‐based and spatial processes in metacommunity structures. If there is no association, however, then stochastic processes may be interpreted as a possible factor driving community assembly. We sampled 20 ponds and more than 5800 adult individual anurans in one of the world's largest Neotropical wetland systems, where an annual and unimodal flood pulse is the most important force operating in the landscape. We aimed to determine the relative importance of environmental abiotic factors (pond physical, chemical and morphometric variables) and geographic distance in structuring the metacommunity of aquatic‐breeding anurans during the end of the dry season. We predicted that species composition would be strongly associated with environmental variables (niche‐based processes) and species richness would be positively related to habitat heterogeneity. Moreover, we expected that massive dispersal, promoted by the preceding flood season, would result in low evidence of spatial processes in the metacommunity structure of anurans. Contrary to our prediction, we found minimal association between anuran composition and environmental gradients. Nonetheless, as expected, we found a positive relationship between species richness and environmental heterogeneity, and no spatial signal. Our results suggest that the annual floods increase the probability that species disperse massively and colonise ponds in an unpredictable way. This may be interpreted as a case where stochastic processes are probably the main force structuring the anuran metacommunity in seasonally flooded systems.

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“…These often include the measurement of spatial, compositional, structural and functional attributes of vegetation (Spencer et al 1998;Amy & Robertson 2001;Jansen & Healey 2003;Munné et al 2003). In the Amazon, distribution of anurans with an aquatic reproductive stage has been related to environmental variables, including stream distance and number of trees (Landeiro et al 2014). In tropical rainforests, topography, soil, leaf litter, and vegetation properties, are major factors influencing anuran species distribution (Giaretta et al 1999;Vonesh 2001).…”

Section: Riparian Vegetation Conditionmentioning

confidence: 99%

Riparian vegetation condition influences movement and microhabitat use by Mixophyes fasciolatus in South East Queensland

Schwenke¹

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Spatial and environmental patterns of Amazonian anurans: Differences between assemblages with aquatic and terrestrial reproduction, and implications for conservation management

Cited by 26 publications

References 20 publications

Are leaf-litter anurans with aquatic reproduction affected by distance to forest edge and presence of predators?

Are leaf-litter anurans with aquatic reproduction affected by distance to forest edge and presence of predators?

Evidence of stochasticity driving anuran metacommunity structure in the Pantanal wetlands

Riparian vegetation condition influences movement and microhabitat use by Mixophyes fasciolatus in South East Queensland

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