The activity patterns and microhabitat use of Pseudis minuta Günther, 1858 (Anura, Hylidae) in the Lagoa do Peixe National Park, a biosphere reserve of the brazilian subtropics

Huckembeck, Sônia; Claudino, Marlucy Coelho; Corrêa, Fabiano; Bastos, Rodrigo Ferreira; Loebmann, Daniel; Tozetti, Alexandro Marques; Garcia, Alexandre

doi:10.1590/s1519-69842012000200014

Cited by 15 publications

(13 citation statements)

References 17 publications

(19 reference statements)

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“…Less attention has been dedicated to subtemperate open habitats, such as wetlands. Southern Brazilian wetlands possess unique climatic characteristics, such as colder winters, in comparison with other Brazilian regions (Huckembeck et al 2012;Oliveira et al 2013). Given the divergent opinions regarding the effects of climatic factors on the activity patterns of anurans (Oseen and Wassersug 2002;Saenz et al 2006), transitional climatic regions represent an important natural laboratory for testing ecological hypotheses concerning the evolutionary process in ectotherms.…”

Section: Introductionmentioning

confidence: 99%

Seasonality in anuran activity and calling season in a Brazilian subtemperate wetland

Ximenez

Tozetti

2015

Zool. Stud.

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Background: Most tropical regions have a climate characterized by marked seasonal rainfall patterns, and these seasonal patterns of rainfall directly affect anuran activity. However, in regions with temperate climates, the main aspect of climate related to anuran activity is the thermal regime. Thus, transitional climate regions represent good opportunities to study the effect of abiotic factors on anuran activity. In this study, we present new data on the activity pattern and calling season of Neotropical anurans in a subtemperate climate. Anuran activity was assessed based on the rate of capture of specimens in pitfall traps and calling surveys. The field study was conducted between May 2010 and April 2011 in wetlands in southernmost Brazil. Results: An analysis based on directional (circular) statistics showed that general activity in the studied anurans was significantly seasonal. In addition, the general activity pattern of most species was regulated by temperature, not by rainfall, and approached that observed in regions with a temperate climate. However, we did not record a well-defined peak in the number of species displaying calling activity. This parameter did not exhibit any influence of temperature variations or rainfall. Conclusions: The observed general activity pattern is different from that expected for the majority of anurans inhabiting eastern South America. The present study showed that the general activity patterns of most anurans in the wetland region in southernmost Brazil are regulated by temperature and not rainfall, similar to the pattern of anuran assemblies from temperate climates. However, the nonexistence of a significant relationship between calling activity and any of the environmental variables tested suggests the presence of a different environmental factor (e.g., photoperiod or the length of the hydroperiod of the relevant water bodies) as a trigger for the levels of general calling activity.

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Section: Introductionmentioning

confidence: 99%

Seasonality in anuran activity and calling season in a Brazilian subtemperate wetland

Ximenez

Tozetti

2015

Zool. Stud.

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“…Em termos de enquadramento, a turbidez manteve-se em conformidade com a classe 2 que de acordo com a Resolução CONAMA nº 357/2005 (BRASIL, 2005) apresenta um limite máximo de até 100 NTU. 4) Os resultados de temperatura apresentaram baixa dispersão, e qualitativamente compreenderam faixas consideradas aceitáveis para a manutenção da fauna e flora aquáticas (HUCKEMBECK et al, 2012). Comumente corpos d'água apresentam variações de temperatura ao longo do dia e das estações do ano.…”

Section: Resultsunclassified

Variabilidade Espaço-Temporal De Parâmetros De Qualidade Da Água Ao Longo De Seção De Monitoramento Do Rio Iguaçu

Gonçalves

Fernandes

2017

Rev. Agro. Amb.

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RESUMO:As NBRs nº 9.897 (ABNT, 1987a) e nº 9.898 (ABNT, 1987b) auxiliam no monitoramento de recursos hídricos de modo a sugerir a localização e o número de postos amostrais, inclusive aqueles ao longo de uma seção transversal do rio que variam conforme a sua largura e profundidade. Contudo, diante da complexidade e dos recursos necessários à prática de monitoramento de rios, é comum sacrificar tal amostragem para fazê-la de uma margem do rio. Para verificar o grau de influência do local de amostragem, avaliou-se neste trabalho a variação de concentrações de parâmetros de qualidade da água ao longo de uma seção transversal de rio, em diferentes condições hidrológicas. Para tanto, foram monitorados cinco pontos amostrais distribuídos ao longo da seção de estudo. Concluiu-se que houve elevada dispersão ao longo da seção de rio quanto aos parâmetros orgânicos, e uma tendência particular de distribuição gradual da concentração para cada parâmetro de DBO e DQO. Contudo, a Análise de Variância permite afirmar que não houve diferenças significativas entre os pontos amostrais. Com base no exposto, não houve impactos negativos à gestão de recursos hídricos decorrentes de informações de qualidade da água amostradas às margens do rio. Assim, para este estudo de caso, o número de pontos amostrais sugerido pela norma supracitada pode ser simplificado em um único ponto na seção de monitoramento. PALAVRAS-CHAVE:Análise de variância; DBO; Dispersão amostral. SPACE-TIME VARIABILIT Y OF WATER QUALIT Y PARAMETERS THROUGHOUT THE MONITORED SEGMENT OF THE RIVER IGUAÇUABSTRACT: NBRs n. 9.897 (ABNT, 1987a) and n. 9.898 (ABNT, 1987b) are a help

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“…Periphyton from the Mangueira Lagoon and POM from the Patos Lagoon are important carbon sources that sustain the trophic webs in the region (Rodrigues et al, 2014) and are potentially ingested by spoonbills due to their tactile foraging technique. Similarly, the amphibian Pseudis minuta Günther, 1858 was included because it is an abundant aquatic frog (Huckembeck et al, 2012) and, therefore, serves as potential prey for egrets, given their foraging tactics.…”

Section: Discussionmentioning

confidence: 99%

The contrasting feeding ecology of great egrets and roseate spoonbills in limnetic and estuarine colonies

Britto

Bugoni

2014

Hydrobiologia

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Multispecies colonies of wading birds frequently occur in both freshwater and estuarine environments, in locations with potentially safe places for nesting where the nearby shallow waters provide food for rearing chicks. In 2011/2012, we investigated the feeding ecology of two large-sized waterbirds, the great egret, Ardea alba, and the roseate spoonbill, Platalea ajaja, which breed sympatrically in limnetic and estuarine colonies 65 km apart in southern Brazil. Whole blood from chicks was sampled for d 13 C and d 15 N stable isotopes, and their diets were assessed using direct (conventional) methods. The diet of spoonbills consisted of fish, insects, crustaceans, mollusks, and seeds, whereas great egrets fed mainly on fish, insects, and crustaceans. Bayesian stable isotope mixing models indicated that spoonbills fed exclusively in limnetic habitats, regardless of where they bred, whereas egrets breeding in the estuarine colony fed on both estuarine and limnetic prey, expanding their isotopic niche considerably. Dietary data confirmed this result, with the diets of egrets in the freshwater colony showing high similarity to the diets of spoonbills in both freshwater and estuarine colonies. The isotopic niche overlap was the lowest between species in the estuarine colony, suggesting that the feeding plasticity of egrets reduces interspecific competition during breeding.

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The activity patterns and microhabitat use of Pseudis minuta Günther, 1858 (Anura, Hylidae) in the Lagoa do Peixe National Park, a biosphere reserve of the brazilian subtropics

Cited by 15 publications

References 17 publications

Seasonality in anuran activity and calling season in a Brazilian subtemperate wetland

Seasonality in anuran activity and calling season in a Brazilian subtemperate wetland

Variabilidade Espaço-Temporal De Parâmetros De Qualidade Da Água Ao Longo De Seção De Monitoramento Do Rio Iguaçu

The contrasting feeding ecology of great egrets and roseate spoonbills in limnetic and estuarine colonies

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