Factors influencing spatial and temporal structure of frog assemblages at ponds in southeastern Brazil

Kopp, Kátia; Eterovick, Paula Cabral

doi:10.1080/00222930601017403

Cited by 59 publications

(43 citation statements)

References 40 publications

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“…Rainfall and air temperatures are a cue for the availability of resources for reproduction, contributing to the positive correlation between anuran species in reproductive activity and these abiotic factors, as reported in several studies (e.g. Aichinger 1987, Bertoluci & Rodrigues 2002a, Toledo et al 2003, Kopp & Eterovick 2006, Santos et al 2007, Canavero et al 2009. A large number of authors claim that there is a combined effect of temperature and precipitation influencing the seasonality within anurans communities (e.g.…”

Section: Seasonality In Reproductive Activitymentioning

confidence: 92%

Anurans of a riparian forest in Sao Carlos, state of Sao Paulo, Brazil

Sabbag

Zina

2011

Biota Neotrop.

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Abstract:We surveyed anuran amphibians in a riparian forest fragment of the Córrego do Espraiado, located at the Universidade Federal de São Carlos, Municipality of São Carlos, state of São Paulo, southeastern Brazil. During March 2009 and February 2010 we did weekly surveys in which we recorded 13 anuran species. The species showed a seasonal reproductive activity. In addition, we found a positive correlation between the number of reproductively active species and photoperiod. We also found that the studied community was more similar to those of transitional areas between the Atlantic Forest and Cerrado than those of the nearby Cerrado fragments.

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Section: Seasonality In Reproductive Activitymentioning

confidence: 92%

Anurans of a riparian forest in Sao Carlos, state of Sao Paulo, Brazil

Sabbag

Zina

2011

Biota Neotrop.

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“…The coexistence of several anuran species is possible due to the exploitation of microhabitats with distinct characteristics (Cardoso et al 1989, Pombal Jr. 1997, Vasconcelos & RossaFeres 2005, Kopp & Eterovick 2006, Maffei & Jim 2011, where the occupation of different sites of reproduction by synchronopatric species of anurans can function as a mechanism of isolation (Andrade 1994, Á vila & Ferreira 2004, Vieira et al 2007. However, other factors may have an influence in species segregation, such as differentiation in advertisement calls (Pombal Jr. 1997), morphological and behavioral features (Crump 1974, Toft 1985, historical factors (Eterovick & Fernandes 2001), seasonality, habitat and predation (Eterovick & Sazima 2000) and stochastic processes (Bonner et al 1997).…”

Section: Spatial Distributionmentioning

confidence: 99%

Spatial and temporal distribution in two anuran communities in the Chapada do Araripe, Northeastern Brasil

Ferreira-Silva

Oliveira

et al. 2016

Biota Neotrop.

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In this study, we report the temporal occurrence and habitat and microhabitat use by anurans in two areas located in one highland marsh (brejo-de-altitude) in northeastern Brazil. Fieldwork was carried out between September 2011 and September 2012. The recorded anurans belong to 14 species distributed in five families: Hylidae (six), Leptodactylidae (five), Bufonidae, Odontophrynidae and Pipidae (one each). Vocalization activity was seasonal and concentrated in the wetter and warmer months, but correlated to rainfall only in the top in the Chapada do Araripe. Richness and abundance of calling anurans were lower in the humid forest of the slope than in Cerradão area in the top of the Chapada do Araripe. Scinax x-signatus vocalized during nine months, and along with Dendropsophus soaresi, Phyllomedusa nordestina and Physalaemus cuvieri presented the longest periods of vocalization with the highest number of species vocalizing in at the height of the rainy season. Males were recorded vocalizing in nine different microhabitats, Adenomera sp. uses leaf litter and P. cuvieri the edge of water bodies as calling site both two sampled areas. Differences in richness and abundance of anurans between the two habitats are probably due to physical characteristics, such as presence of lentic environments. Keywords: Anurofauna, microhabitat use, seasonality. Resumo: Neste estudo são descritas a ocorrência temporal e o uso de habitat e microhabitat dos anuros de duas localidades em uma área de brejo de altitude no nordeste do Brasil. As amostragens foram realizadas entre setembro de 2011 e setembro de 2012. Foram registrados anuros pertencentes a 14 espécies distribuídas em cinco famílias: Hylidae (seis), Leptodactylidae (cinco), Bufonidae, Odontophrynidae e Pipidae (uma cada). A atividade de vocalizac¸ã o foi sazonal e concentrada nos meses mais ú midos e quentes, mas correlacionada somente com as chuvas no topo da Chapada do Araripe. A riqueza e abundâ ncia de anuros vocalizando foram menores na floresta ú mida da encosta que na á rea de Cerradão do topo da Chapada do Araripe. Scinax x-signatus vocalizou durante nove meses, e juntamente com Dendropsophus minutus, D. soaresi, Phyllomedusa nordestina e Physalaemus cuvieri apresentou os períodos de vocalizac¸ão mais prolongados, com maior abundancia de indivíduos vocalizando no ápice do período chuvoso. Machos de anuros foram registrados vocalizando em nove microhabitats diferentes, Adenomera sp. utiliza serrapilheira e P. cuvieri a margem dos corpos d'á gua como sítios de vocalizac¸ão em ambas áreas amostradas. Diferenc¸as na riqueza e abundâ ncia de anuros entre os dois habitats estudados estão associadas às características estruturais dos mesmos, como a presenc¸a de ambientes lênticos. Palavras-chave: Anurofauna, uso do micro-habitat, sazonalidade.

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“…Vegetation cover must be important for larval amphibians because it is related to occurrence on the microhabitat scale and whole-pond scale (Courtois et al 1995, Van Buskirk 2005, Kopp and Eterovick 2006, Hartel et al 2007). Mechanisms by which vegetation influences habitat include factors such as oviposition sites and oxygen level, which are not known to affect larval morphology, but also vulnerability to predators, which certainly can.…”

Section: Relationships Between Morphology and Habitat Gradientsmentioning

confidence: 99%

Natural variation in morphology of larval amphibians: Phenotypic plasticity in nature?

Buskirk

2009

Ecological Monographs

104

107

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Phenotypic plasticity has been studied intensively in experimental settings but infrequently in nature, and therefore the relevance of experimental findings is poorly known. This is especially true for morphological plasticity in amphibian larvae induced by predators and competitors. This paper describes a seven-year survey of head and tail shape in eight species of anuran and newt larvae in northern Switzerland, involving 6824 individual larvae and 59 ponds. I tested relationships between geometric measures of size and shape and five habitat gradients: pond permanence, cover by forest canopy and aquatic vegetation, and the densities of predators and competitors. Responses to competitors and predators were often similar to those reported in experiments. High competitor density was associated with small size and a large head in newt larvae, a long or deep head/body in anuran larvae, and a short or shallow tail in newts and some tadpoles. High predator density was correlated with a deep tail fin and tail muscle in many species. In anurans, the change in shape between low-and highpredator ponds in nature closely paralleled the plastic response to nonlethal predators in mesocosm experiments. The survey revealed many previously undescribed relationships between morphology and the other habitat features. Several species had relatively large tails in ponds that were shaded or thickly vegetated. Associations between year-to-year changes in shape and habitat within ponds implicated phenotypic plasticity rather than genetic population divergence, at least in anurans. These results inspire confidence in the relevance of experiments and highlight many new patterns that will merit further study. Abstract. Phenotypic plasticity has been studied intensively in experimental settings but infrequently in nature, and therefore the relevance of experimental findings is poorly known. This is especially true for morphological plasticity in amphibian larvae induced by predators and competitors. This paper describes a seven-year survey of head and tail shape in eight species of anuran and newt larvae in northern Switzerland, involving 6824 individual larvae and 59 ponds. I tested relationships between geometric measures of size and shape and five habitat gradients: pond permanence, cover by forest canopy and aquatic vegetation, and the densities of predators and competitors. Responses to competitors and predators were often similar to those reported in experiments. High competitor density was associated with small size and a large head in newt larvae, a long or deep head/body in anuran larvae, and a short or shallow tail in newts and some tadpoles. High predator density was correlated with a deep tail fin and tail muscle in many species. In anurans, the change in shape between low-and highpredator ponds in nature closely paralleled the plastic response to nonlethal predators in mesocosm experiments. The survey revealed many previously undescribed relationships between morphology and the other habitat features. Several species h...

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Factors influencing spatial and temporal structure of frog assemblages at ponds in southeastern Brazil

Cited by 59 publications

References 40 publications

Anurans of a riparian forest in Sao Carlos, state of Sao Paulo, Brazil

Anurans of a riparian forest in Sao Carlos, state of Sao Paulo, Brazil

Spatial and temporal distribution in two anuran communities in the Chapada do Araripe, Northeastern Brasil

Natural variation in morphology of larval amphibians: Phenotypic plasticity in nature?

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